Remember to build the drivetypes table.

Improve the A2R writer.

.github/workflows/ccpp.yml

@@ -19,9 +19,10 @@ jobs:
         repository: 'davidgiven/fluxengine-testdata'
         path: 'fluxengine-testdata'
     - name: apt
-      run: sudo apt update && sudo apt install libudev-dev libsqlite3-dev protobuf-compiler libwxgtk3.0-gtk3-dev libfmt-dev
+      run: |
+        sudo apt install libudev-dev libsqlite3-dev protobuf-compiler libwxgtk3.0-gtk3-dev libfmt-dev libprotobuf-dev wx-common
     - name: make
-      run: CXXFLAGS="-Wp,-D_GLIBCXX_ASSERTIONS" make -j2 -C fluxengine
+      run: CXXFLAGS="-Wp,-D_GLIBCXX_ASSERTIONS" make -j`nproc` -C fluxengine
 
   build-macos-current:
     runs-on: macos-latest
@@ -37,60 +38,57 @@ jobs:
     - name: brew
       run: brew install sqlite pkg-config libusb protobuf wxwidgets fmt make coreutils dylibbundler libjpeg
     - name: make
-      run: gmake -j2 -C fluxengine
+      run: gmake -j`nproc` -C fluxengine
 
     - name: Upload build artifacts
       uses: actions/upload-artifact@v2
       with:
         name: ${{ github.event.repository.name }}.${{ github.sha }}
-        path: fluxengine.FluxEngine.pkg
+        path: fluxengine/FluxEngine.pkg
 
   build-windows:
     runs-on: windows-latest
-    defaults:
-      run:
-        shell: msys2 {0}
+
     steps:
-    - uses: msys2/setup-msys2@v2
-      with:
-        update: true
-        msystem: MINGW32
-        install: >-
-          diffutils
-          make
-          mingw-w64-i686-fmt
-          mingw-w64-i686-gcc
-          mingw-w64-i686-libusb
-          mingw-w64-i686-pkg-config
-          mingw-w64-i686-protobuf
-          mingw-w64-i686-sqlite3
-          mingw-w64-i686-wxWidgets
-          mingw-w64-i686-zlib
-          mingw-w64-i686-nsis
-          zip
-          vim
-    - uses: actions/checkout@v2
+    - name: setup WSL
+      run: |
+        curl -L https://github.com/WhitewaterFoundry/Fedora-Remix-for-WSL/releases/download/39.0.1/Fedora-Remix-for-WSL-SL_39.0.1.0_x64_arm64.msixbundle -o fedora.msixbundle
+        unzip fedora.msixbundle Fedora-Remix-for-WSL-SL_39.0.1.0_x64.msix
+        unzip Fedora-Remix-for-WSL-SL_39.0.1.0_x64.msix install.tar.gz
+        wsl --update
+        wsl --import fedora fedora install.tar.gz
+        wsl --set-default fedora
+        wsl sh -c 'dnf -y install https://github.com/rpmsphere/noarch/raw/master/r/rpmsphere-release-38-1.noarch.rpm'
+        wsl sh -c 'dnf -y install --setop=install_weak_deps=False gcc gcc-c++ protobuf-c-compiler protobuf-devel fmt-devel systemd-devel sqlite-devel wxGTK-devel mingw32-gcc mingw32-gcc-c++ mingw32-zlib-static mingw32-protobuf-static mingw32-sqlite-static mingw32-wxWidgets3-static mingw32-libpng-static mingw32-libjpeg-static mingw32-libtiff-static mingw32-nsis png2ico'
+
+    - name: fix line endings
+      run: |
+        git config --global core.autocrlf false
+        git config --global core.eol lf
+        
+    - uses: actions/checkout@v4
       with:
         repository: 'davidgiven/fluxengine'
         path: 'fluxengine'
-    - uses: actions/checkout@v2
+
+    - uses: actions/checkout@v4
       with:
         repository: 'davidgiven/fluxengine-testdata'
         path: 'fluxengine-testdata'
-    - name: build
-      run: make -j2 -C fluxengine
+
+    - name: run
+      run: |
+        wsl sh -c 'make -C fluxengine BUILDTYPE=windows -j$(nproc)'
 
     - name: nsis
       run: |
-        cd fluxengine
-        strip fluxengine.exe -o fluxengine-stripped.exe
-        strip fluxengine-gui.exe -o fluxengine-gui-stripped.exe
-        makensis -v2 -nocd -dOUTFILE=fluxengine-installer.exe extras/windows-installer.nsi
+        wsl sh -c 'cd fluxengine && strip fluxengine.exe -o fluxengine-stripped.exe'
+        wsl sh -c 'cd fluxengine && strip fluxengine-gui.exe -o fluxengine-gui-stripped.exe'
+        wsl sh -c 'cd fluxengine && makensis -v2 -nocd -dOUTFILE=fluxengine-installer.exe extras/windows-installer.nsi'
 
     - name: zip
       run: |
-        cd fluxengine
-        zip -9 fluxengine-windows.zip fluxengine.exe fluxengine-gui.exe upgrade-flux-file.exe brother120tool.exe brother240tool.exe FluxEngine.cydsn/CortexM3/ARM_GCC_541/Release/FluxEngine.hex fluxengine-installer.exe
+        wsl sh -c 'cd fluxengine && zip -9 fluxengine-windows.zip fluxengine.exe fluxengine-gui.exe upgrade-flux-file.exe brother120tool.exe brother240tool.exe FluxEngine.cydsn/CortexM3/ARM_GCC_541/Release/FluxEngine.hex fluxengine-installer.exe'
 
     - name: Upload build artifacts
       uses: actions/upload-artifact@v2

.github/workflows/release.yml

@@ -1,7 +1,7 @@
 name: Autorelease
 
 concurrency: 
-  group: environment-${{ github.head_ref }}
+  group: environment-release-${{ github.head_ref }}
   cancel-in-progress: true
 
 on:
@@ -12,43 +12,42 @@ on:
 jobs:
   dev-release:
     runs-on: windows-latest
-    defaults:
-      run:
-        shell: msys2 {0}
-    steps:
-    - uses: msys2/setup-msys2@v2
-      with:
-        update: true
-        msystem: MINGW32
-        install: >-
-          diffutils
-          make
-          mingw-w64-i686-fmt
-          mingw-w64-i686-gcc
-          mingw-w64-i686-libusb
-          mingw-w64-i686-pkg-config
-          mingw-w64-i686-protobuf
-          mingw-w64-i686-sqlite3
-          mingw-w64-i686-wxWidgets
-          mingw-w64-i686-zlib
-          mingw-w64-i686-nsis
-          zip
-          vim
-    - uses: actions/checkout@v3
 
-    - name: build
+    steps:
+    - name: setup WSL
       run: |
-        make -j2
+        curl -L https://github.com/WhitewaterFoundry/Fedora-Remix-for-WSL/releases/download/39.0.1/Fedora-Remix-for-WSL-SL_39.0.1.0_x64_arm64.msixbundle -o fedora.msixbundle
+        unzip fedora.msixbundle Fedora-Remix-for-WSL-SL_39.0.1.0_x64.msix
+        unzip Fedora-Remix-for-WSL-SL_39.0.1.0_x64.msix install.tar.gz
+        wsl --update
+        wsl --import fedora fedora install.tar.gz
+        wsl --set-default fedora
+        wsl sh -c 'dnf -y install https://github.com/rpmsphere/noarch/raw/master/r/rpmsphere-release-38-1.noarch.rpm'
+        wsl sh -c 'dnf -y install --setop=install_weak_deps=False gcc gcc-c++ protobuf-c-compiler protobuf-devel fmt-devel systemd-devel sqlite-devel wxGTK-devel mingw32-gcc mingw32-gcc-c++ mingw32-zlib-static mingw32-protobuf-static mingw32-sqlite-static mingw32-wxWidgets3-static mingw32-libpng-static mingw32-libjpeg-static mingw32-libtiff-static mingw32-nsis png2ico'
+
+    - name: fix line endings
+      run: |
+        git config --global core.autocrlf false
+        git config --global core.eol lf
+        
+    - uses: actions/checkout@v4
+      with:
+        repository: 'davidgiven/fluxengine'
+        path: 'fluxengine'
+
+    - name: run
+      run: |
+        wsl sh -c 'cd fluxengine && make BUILDTYPE=windows -j$(nproc)'
 
     - name: nsis
       run: |
-        strip fluxengine.exe -o fluxengine-stripped.exe
-        strip fluxengine-gui.exe -o fluxengine-gui-stripped.exe
-        makensis -v2 -nocd -dOUTFILE=fluxengine-installer.exe extras/windows-installer.nsi
+        wsl sh -c 'cd fluxengine && strip fluxengine.exe -o fluxengine-stripped.exe'
+        wsl sh -c 'cd fluxengine && strip fluxengine-gui.exe -o fluxengine-gui-stripped.exe'
+        wsl sh -c 'cd fluxengine && makensis -v2 -nocd -dOUTFILE=fluxengine-installer.exe extras/windows-installer.nsi'
 
     - name: zip
       run: |
-        zip -9 fluxengine.zip fluxengine.exe fluxengine-gui.exe upgrade-flux-file.exe brother120tool.exe brother240tool.exe FluxEngine.cydsn/CortexM3/ARM_GCC_541/Release/FluxEngine.hex
+        wsl sh -c 'cd fluxengine && zip -9 fluxengine-windows.zip fluxengine.exe fluxengine-gui.exe upgrade-flux-file.exe brother120tool.exe brother240tool.exe FluxEngine.cydsn/CortexM3/ARM_GCC_541/Release/FluxEngine.hex fluxengine-installer.exe'
 
     - name: date
       run: |
@@ -59,6 +58,7 @@ jobs:
       with:
         tag-name: dev
         force-branch: false
+        git-directory: 'fluxengine'
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -77,8 +77,8 @@ jobs:
       with:
         name: Development build ${{ env.RELEASE_DATE }}
         files: |
-          fluxengine.zip
-          fluxengine-installer.exe
+          fluxengine/fluxengine.zip
+          fluxengine/fluxengine-installer.exe
         tag_name: dev
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -87,10 +87,12 @@ jobs:
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v2
+
     - name: brew
       run: brew install sqlite pkg-config libusb protobuf wxwidgets fmt make coreutils dylibbundler libjpeg
+
     - name: make
-      run: gmake
+      run: gmake -j`nproc`
 
     - name: tag
       uses: EndBug/latest-tag@latest

.hgignore

@@ -1,4 +1,5 @@
 .obj
+.git
 streams
 .*\.flux
 .*\.img

Makefile

@@ -1,300 +1,96 @@
-#Special Windows settings.
+export BUILDTYPE
+BUILDTYPE ?= host
 
-ifeq ($(OS), Windows_NT)
-	MINGWBIN = /mingw32/bin
-	CCPREFIX = $(MINGWBIN)/
-	LUA = $(MINGWBIN)/lua
-	PKG_CONFIG = $(MINGWBIN)/pkg-config
-	WX_CONFIG = /usr/bin/sh $(MINGWBIN)/wx-config --static=yes
-	PROTOC = $(MINGWBIN)/protoc
-	PLATFORM = WINDOWS
-	LDFLAGS += \
-		-static
+ifeq ($(BUILDTYPE),windows)
+	MINGW = i686-w64-mingw32-
+	CC = $(MINGW)gcc
+	CXX = $(MINGW)g++ -std=c++17
+	CFLAGS += -g -O3
 	CXXFLAGS += \
-		-std=c++17 \
 		-fext-numeric-literals \
 		-Wno-deprecated-enum-float-conversion \
 		-Wno-deprecated-enum-enum-conversion
-
-#Required to get the gcc run - time libraries on the path.
-	export PATH := $(PATH):$(MINGWBIN)
-	EXT ?= .exe
+	LDFLAGS += -static
+	AR = $(MINGW)ar
+	PKG_CONFIG = $(MINGW)pkg-config -static
+	WINDRES = $(MINGW)windres
+	WX_CONFIG = /usr/i686-w64-mingw32/sys-root/mingw/bin/wx-config-3.0 --static=yes
+	EXT = .exe
+else
+	CC = gcc
+	CXX = g++ -std=c++17
+	CFLAGS = -g -O3
+	LDFLAGS =
+	AR = ar
+	PKG_CONFIG = pkg-config
 endif
 
-#Special OSX settings.
+HOSTCC = gcc
+HOSTCXX = g++ -std=c++17
+HOSTCFLAGS = -g -O3
+HOSTLDFLAGS =
 
-ifeq ($(shell uname),Darwin)
-	PLATFORM = OSX
-	LDFLAGS += \
-		-framework IOKit \
-		-framework Foundation
-endif
-
-#Check the Make version.
-
-
-ifeq ($(findstring 4.,$(MAKE_VERSION)),)
-$(error You need GNU Make 4.x for this (if you're on OSX, use gmake).)
-endif
-
-#Normal settings.
-
-OBJDIR ?= .obj
-CCPREFIX ?=
-LUA ?= lua
-CC ?= $(CCPREFIX)gcc
-CXX ?= $(CCPREFIX)g++
-AR ?= $(CCPREFIX)ar
-PKG_CONFIG ?= pkg-config
-WX_CONFIG ?= wx-config
-PROTOC ?= protoc
-CFLAGS ?= -g -O3
-CXXFLAGS += -std=c++17
-LDFLAGS ?=
-PLATFORM ?= UNIX
-TESTS ?= yes
-EXT ?=
+REALOBJ = .obj
+OBJ = $(REALOBJ)/$(BUILDTYPE)
 DESTDIR ?=
 PREFIX ?= /usr/local
 BINDIR ?= $(PREFIX)/bin
 
-CFLAGS += \
-	-Iarch \
-	-Ilib \
-	-I. \
-	-I$(OBJDIR)/arch \
-	-I$(OBJDIR)/lib \
-	-I$(OBJDIR) \
-	-Wno-deprecated-declarations \
+# Special Windows settings.
 
-LDFLAGS += \
-	-lz \
-	-lfmt
+ifeq ($(OS), Windows_NT)
+	EXT ?= .exe
+	MINGWBIN = /mingw32/bin
+	CCPREFIX = $(MINGWBIN)/
+	PKG_CONFIG = $(MINGWBIN)/pkg-config
+	WX_CONFIG = /usr/bin/sh $(MINGWBIN)/wx-config --static=yes
+	PROTOC = $(MINGWBIN)/protoc
+	WINDRES = windres
+	LDFLAGS += \
+		-static
+	CXXFLAGS += \
+		-fext-numeric-literals \
+		-Wno-deprecated-enum-float-conversion \
+		-Wno-deprecated-enum-enum-conversion
 
-.SUFFIXES:
-.DELETE_ON_ERROR:
-
-define nl
-
-endef
-
-empty :=
-space := $(empty) $(empty)
-
-use-library = $(eval $(use-library-impl))
-define use-library-impl
-$1: $(call $3_LIB)
-$1: private LDFLAGS += $(call $3_LDFLAGS)
-$2: private CFLAGS += $(call $3_CFLAGS)
-endef
-
-use-pkgconfig = $(eval $(use-pkgconfig-impl))
-define use-pkgconfig-impl
-ifneq ($(strip $(shell $(PKG_CONFIG) $3; echo $$?)),0)
-$$(error Missing required pkg-config dependency: $3)
+	# Required to get the gcc run - time libraries on the path.
+	export PATH := $(PATH):$(MINGWBIN)
 endif
 
-$(1): private LDFLAGS += $(shell $(PKG_CONFIG) --libs $(3))
-$(2): private CFLAGS += $(shell $(PKG_CONFIG) --cflags $(3))
-endef
-
-.PHONY: all binaries tests clean install install-bin
-all: binaries tests docs
-
-PROTOS = \
-	arch/aeslanier/aeslanier.proto \
-	arch/agat/agat.proto \
-	arch/amiga/amiga.proto \
-	arch/apple2/apple2.proto \
-	arch/brother/brother.proto \
-	arch/c64/c64.proto \
-	arch/f85/f85.proto \
-	arch/fb100/fb100.proto \
-	arch/ibm/ibm.proto \
-	arch/macintosh/macintosh.proto \
-	arch/micropolis/micropolis.proto \
-	arch/mx/mx.proto \
-	arch/northstar/northstar.proto \
-	arch/rolandd20/rolandd20.proto \
-	arch/smaky6/smaky6.proto \
-	arch/tids990/tids990.proto \
-	arch/victor9k/victor9k.proto \
-	arch/zilogmcz/zilogmcz.proto \
-	lib/common.proto \
-	lib/config.proto \
-	lib/decoders/decoders.proto \
-	lib/drive.proto \
-	lib/encoders/encoders.proto \
-	lib/fl2.proto \
-	lib/fluxsink/fluxsink.proto \
-	lib/fluxsource/fluxsource.proto \
-	lib/imagereader/imagereader.proto \
-	lib/imagewriter/imagewriter.proto \
-	lib/layout.proto \
-	lib/usb/usb.proto \
-	lib/vfs/vfs.proto \
-	tests/testproto.proto \
-
-PROTO_HDRS = $(patsubst %.proto, $(OBJDIR)/%.pb.h, $(PROTOS))
-PROTO_SRCS = $(patsubst %.proto, $(OBJDIR)/%.pb.cc, $(PROTOS))
-PROTO_OBJS = $(patsubst %.cc, %.o, $(PROTO_SRCS))
-PROTO_CFLAGS = $(shell $(PKG_CONFIG) --cflags protobuf)
-$(PROTO_SRCS): | $(PROTO_HDRS)
-$(PROTO_OBJS): CFLAGS += $(PROTO_CFLAGS)
-PROTO_LIB = $(OBJDIR)/libproto.a
-$(PROTO_LIB): $(PROTO_OBJS)
-PROTO_LDFLAGS = $(shell $(PKG_CONFIG) --libs protobuf) -pthread
-.PRECIOUS: $(PROTO_HDRS) $(PROTO_SRCS)
-
-include dep/agg/build.mk
-include dep/libusbp/build.mk
-include dep/stb/build.mk
-include dep/emu/build.mk
-include dep/fatfs/build.mk
-include dep/adflib/build.mk
-include dep/hfsutils/build.mk
-include scripts/build.mk
-
-include lib/build.mk
-include arch/build.mk
-include src/build.mk
-include src/gui/build.mk
-include tools/build.mk
-include tests/build.mk
-
-do-encodedecodetest = $(eval $(do-encodedecodetest-impl))
-define do-encodedecodetest-impl
-
-tests: $(OBJDIR)/$1$$(subst $$(space),_,$3).flux.encodedecode
-$(OBJDIR)/$1$$(subst $$(space),_,$3).flux.encodedecode: scripts/encodedecodetest.sh $(FLUXENGINE_BIN) $2
-	@mkdir -p $(dir $$@)
-	@echo ENCODEDECODETEST $1 flux $(FLUXENGINE_BIN) $2 $3
-	@scripts/encodedecodetest.sh $1 flux $(FLUXENGINE_BIN) $2 $3 > $$@
-
-tests: $(OBJDIR)/$1$$(subst $$(space),_,$3).scp.encodedecode
-$(OBJDIR)/$1$$(subst $$(space),_,$3).scp.encodedecode: scripts/encodedecodetest.sh $(FLUXENGINE_BIN) $2
-	@mkdir -p $(dir $$@)
-	@echo ENCODEDECODETEST $1 scp $(FLUXENGINE_BIN) $2 $3
-	@scripts/encodedecodetest.sh $1 scp $(FLUXENGINE_BIN) $2 $3 > $$@
-
-endef
-
-$(call do-encodedecodetest,agat,,--drive.tpi=96)
-$(call do-encodedecodetest,amiga,,--drive.tpi=135)
-$(call do-encodedecodetest,apple2,,--140 --drive.tpi=96)
-$(call do-encodedecodetest,atarist,,--360 --drive.tpi=135)
-$(call do-encodedecodetest,atarist,,--370 --drive.tpi=135)
-$(call do-encodedecodetest,atarist,,--400 --drive.tpi=135)
-$(call do-encodedecodetest,atarist,,--410 --drive.tpi=135)
-$(call do-encodedecodetest,atarist,,--720 --drive.tpi=135)
-$(call do-encodedecodetest,atarist,,--740 --drive.tpi=135)
-$(call do-encodedecodetest,atarist,,--800 --drive.tpi=135)
-$(call do-encodedecodetest,atarist,,--820 --drive.tpi=135)
-$(call do-encodedecodetest,bk)
-$(call do-encodedecodetest,brother,,--120 --drive.tpi=135)
-$(call do-encodedecodetest,brother,,--240 --drive.tpi=135)
-$(call do-encodedecodetest,commodore,scripts/commodore1541_test.textpb,--171 --drive.tpi=96)
-$(call do-encodedecodetest,commodore,scripts/commodore1541_test.textpb,--192 --drive.tpi=96)
-$(call do-encodedecodetest,commodore,,--800 --drive.tpi=135)
-$(call do-encodedecodetest,commodore,,--1620 --drive.tpi=135)
-$(call do-encodedecodetest,hplif,,--264 --drive.tpi=135)
-$(call do-encodedecodetest,hplif,,--608 --drive.tpi=135)
-$(call do-encodedecodetest,hplif,,--616 --drive.tpi=135)
-$(call do-encodedecodetest,hplif,,--770 --drive.tpi=135)
-$(call do-encodedecodetest,ibm,,--1200 --drive.tpi=96)
-$(call do-encodedecodetest,ibm,,--1232 --drive.tpi=96)
-$(call do-encodedecodetest,ibm,,--1440 --drive.tpi=135)
-$(call do-encodedecodetest,ibm,,--1680 --drive.tpi=135)
-$(call do-encodedecodetest,ibm,,--180 --drive.tpi=96)
-$(call do-encodedecodetest,ibm,,--160 --drive.tpi=96)
-$(call do-encodedecodetest,ibm,,--320 --drive.tpi=96)
-$(call do-encodedecodetest,ibm,,--360 --drive.tpi=96)
-$(call do-encodedecodetest,ibm,,--720_96 --drive.tpi=96)
-$(call do-encodedecodetest,ibm,,--720_135 --drive.tpi=135)
-$(call do-encodedecodetest,mac,scripts/mac400_test.textpb,--400 --drive.tpi=135)
-$(call do-encodedecodetest,mac,scripts/mac800_test.textpb,--800 --drive.tpi=135)
-$(call do-encodedecodetest,n88basic,,--drive.tpi=96)
-$(call do-encodedecodetest,rx50,,--drive.tpi=96)
-$(call do-encodedecodetest,tids990,,--drive.tpi=48)
-$(call do-encodedecodetest,victor9k,,--612 --drive.tpi=96)
-$(call do-encodedecodetest,victor9k,,--1224 --drive.tpi=96)
-
-do-corpustest = $(eval $(do-corpustest-impl))
-define do-corpustest-impl
-
-tests: $(OBJDIR)/corpustest/$2
-$(OBJDIR)/corpustest/$2: $(FLUXENGINE_BIN) \
-		../fluxengine-testdata/data/$1 ../fluxengine-testdata/data/$2
-	@mkdir -p $(OBJDIR)/corpustest
-	@echo CORPUSTEST $1 $2 $3
-	@$(FLUXENGINE_BIN) read $3 -s ../fluxengine-testdata/data/$1 -o $$@ > $$@.log
-	@cmp $$@ ../fluxengine-testdata/data/$2
-
-endef
-
-ifneq ($(wildcard ../fluxengine-testdata/data),)
-
-$(call do-corpustest,amiga.flux,amiga.adf,amiga --drive.tpi=135)
-$(call do-corpustest,atarist360.flux,atarist360.st,atarist --360 --drive.tpi=135)
-$(call do-corpustest,atarist720.flux,atarist720.st,atarist --720 --drive.tpi=135)
-$(call do-corpustest,brother120.flux,brother120.img,brother --120 --drive.tpi=135)
-$(call do-corpustest,cmd-fd2000.flux,cmd-fd2000.img,commodore --1620 --drive.tpi=135)
-$(call do-corpustest,ibm1232.flux,ibm1232.img,ibm --1232 --drive.tpi=96)
-$(call do-corpustest,ibm1440.flux,ibm1440.img,ibm --1440 --drive.tpi=135)
-$(call do-corpustest,mac800.flux,mac800.dsk,mac --800 --drive.tpi=135)
-$(call do-corpustest,micropolis315.flux,micropolis315.img,micropolis --315 --drive.tpi=100)
-$(call do-corpustest,northstar87-synthetic.flux,northstar87-synthetic.nsi,northstar --87 --drive.tpi=48)
-$(call do-corpustest,northstar175-synthetic.flux,northstar175-synthetic.nsi,northstar --175 --drive.tpi=48)
-$(call do-corpustest,northstar350-synthetic.flux,northstar350-synthetic.nsi,northstar --350 --drive.tpi=48)
-$(call do-corpustest,victor9k_ss.flux,victor9k_ss.img,victor9k --612 --drive.tpi=96)
-$(call do-corpustest,victor9k_ds.flux,victor9k_ds.img,victor9k --1224 --drive.tpi=96)
+# Special OSX settings.
 
+ifeq ($(shell uname),Darwin)
+	LDFLAGS += \
+		-framework IOKit \
+		-framework Foundation 
 endif
 
-$(OBJDIR)/%.a:
-	@mkdir -p $(dir $@)
-	@echo AR $@
-	@$(AR) rc $@ $^
+.PHONY: all
+all: +all README.md
 
-%.exe:
-	@mkdir -p $(dir $@)
-	@echo LINK $@
-	@$(CXX) -o $@ $(filter %.o,$^) $(filter %.a,$^) $(LDFLAGS) $(filter %.a,$^) $(LDFLAGS)
+.PHONY: binaries tests
+binaries: all
+tests: all
+	
+README.md: $(OBJ)/scripts/+mkdocindex/+mkdocindex$(EXT)
+	@echo MKDOC $@
+	@csplit -s -f$(OBJ)/README. README.md '/<!-- FORMATSSTART -->/' '%<!-- FORMATSEND -->%'
+	@(cat $(OBJ)/README.00 && $< && cat $(OBJ)/README.01) > README.md
 
-$(OBJDIR)/%.o: %.cpp
-	@mkdir -p $(dir $@)
-	@echo CXX $<
-	@$(CXX) $(CFLAGS) $(CXXFLAGS) -MMD -MP -MF $(@:.o=.d) -c -o $@ $<
+.PHONY: tests
 
-$(OBJDIR)/%.o: %.cc
-	@mkdir -p $(dir $@)
-	@echo CXX $<
-	@$(CXX) $(CFLAGS) $(CXXFLAGS) -MMD -MP -MF $(@:.o=.d) -c -o $@ $<
+.PHONY: install install-bin
+install:: all install-bin
 
-$(OBJDIR)/%.o: $(OBJDIR)/%.cc
-	@mkdir -p $(dir $@)
-	@echo CXX $<
-	@$(CXX) $(CFLAGS) $(CXXFLAGS) -MMD -MP -MF $(@:.o=.d) -c -o $@ $<
+clean::
+	$(hide) rm -rf $(REALOBJ)
 
-$(OBJDIR)/%.o: %.c
-	@mkdir -p $(dir $@)
-	@echo CC $<
-	@$(CC) $(CFLAGS) $(CFLAGS) -MMD -MP -MF $(@:.o=.d) -c -o $@ $<
+install-bin:
+	@echo "INSTALL"
+	$(hide) install -D -v "$(OBJ)/src+fluxengine/src+fluxengine" "$(DESTDIR)$(BINDIR)/fluxengine"
+	$(hide) install -D -v "$(OBJ)/src/gui+gui/gui+gui" "$(DESTDIR)$(BINDIR)/fluxengine-gui"
+	$(hide) install -D -v "$(OBJ)/tools+brother120tool/tools+brother120tool" "$(DESTDIR)$(BINDIR)/brother120tool"
+	$(hide) install -D -v "$(OBJ)/tools+brother240tool/tools+brother240tool" "$(DESTDIR)$(BINDIR)/brother240tool"
+	$(hide) install -D -v "$(OBJ)/tools+upgrade-flux-file/tools+upgrade-flux-file" "$(DESTDIR)$(BINDIR)/upgrade-flux-file"
 
-$(OBJDIR)/%.pb.h: %.proto
-	@mkdir -p $(dir $@)
-	@echo PROTOC $@
-	@$(PROTOC) -I. --cpp_out=$(OBJDIR) $<
-
-clean:
-	rm -rf $(OBJDIR)
-
-install: install-bin # install-man install-docs ...
-
-install-bin: fluxengine$(EXT) fluxengine-gui$(EXT) brother120tool$(EXT) brother240tool$(EXT) upgrade-flux-file$(EXT)
-	install -d "$(DESTDIR)$(BINDIR)"
-	for target in $^; do \
-		install $$target "$(DESTDIR)$(BINDIR)/$$target"; \
-	done
-
--include $(OBJS:%.o=%.d)
+include build/ab.mk

README.md

@@ -128,17 +128,19 @@ choices because they can store multiple types of file system.
 | [`icl30`](doc/disk-icl30.md) | ICL Model 30: CP/M; 263kB 35-track DSSD | 🦖 |  | CPMFS  |
 | [`mac`](doc/disk-mac.md) | Macintosh: 400kB/800kB 3.5" GCR | 🦄 | 🦄 | MACHFS  |
 | [`micropolis`](doc/disk-micropolis.md) | Micropolis: 100tpi MetaFloppy disks | 🦄 | 🦄 |  |
+| [`ms2000`](doc/disk-ms2000.md) | : MS2000 Microdisk Development System |  |  | MICRODOS  |
 | [`mx`](doc/disk-mx.md) | DVK MX: Soviet-era PDP-11 clone | 🦖 |  |  |
 | [`n88basic`](doc/disk-n88basic.md) | N88-BASIC: PC8800/PC98 5.25" 77-track 26-sector DSHD | 🦄 | 🦄 |  |
 | [`northstar`](doc/disk-northstar.md) | Northstar: 5.25" hard sectored | 🦄 | 🦄 |  |
 | [`psos`](doc/disk-psos.md) | pSOS: 800kB DSDD with PHILE | 🦄 | 🦄 | PHILE  |
-| [`rolandd20`](doc/disk-rolandd20.md) | Roland D20: 3.5" electronic synthesiser disks | 🦖 |  |  |
+| [`rolandd20`](doc/disk-rolandd20.md) | Roland D20: 3.5" electronic synthesiser disks | 🦄 | 🦖 | ROLAND  |
 | [`rx50`](doc/disk-rx50.md) | Digital RX50: 400kB 5.25" 80-track 10-sector SSDD | 🦖 | 🦖 |  |
 | [`smaky6`](doc/disk-smaky6.md) | Smaky 6: 308kB 5.25" 77-track 16-sector SSDD, hard sectored | 🦖 |  | SMAKY6  |
+| [`tartu`](doc/disk-tartu.md) | Tartu: The Palivere and variations | 🦄 | 🦖 | CPMFS  |
 | [`tids990`](doc/disk-tids990.md) | Texas Instruments DS990: 1126kB 8" DSSD | 🦖 | 🦖 |  |
 | [`tiki`](doc/disk-tiki.md) | Tiki 100: CP/M |  |  | CPMFS  |
 | [`victor9k`](doc/disk-victor9k.md) | Victor 9000 / Sirius One: 1224kB 5.25" DSDD GCR | 🦖 | 🦖 |  |
-| [`zilogmcz`](doc/disk-zilogmcz.md) | Zilog MCZ: 320kB 8" 77-track SSSD hard-sectored | 🦖 |  |  |
+| [`zilogmcz`](doc/disk-zilogmcz.md) | Zilog MCZ: 320kB 8" 77-track SSSD hard-sectored | 🦖 |  | ZDOS  |
 {: .datatable }
 
 <!-- FORMATSEND -->

arch/aeslanier/decoder.cc

@@ -1,11 +1,11 @@
-#include "globals.h"
-#include "decoders/decoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
 #include "aeslanier.h"
-#include "crc.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "sector.h"
-#include "bytes.h"
+#include "lib/crc.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/sector.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include <string.h>
 

arch/agat/agat.cc

@@ -1,7 +1,7 @@
-#include "globals.h"
-#include "decoders/decoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
 #include "agat.h"
-#include "bytes.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 
 uint8_t agatChecksum(const Bytes& bytes)

arch/agat/decoder.cc

@@ -1,11 +1,11 @@
-#include "globals.h"
-#include "decoders/decoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
 #include "agat.h"
-#include "crc.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "sector.h"
-#include "bytes.h"
+#include "lib/crc.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/sector.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include <string.h>
 

arch/amiga/amiga.cc

@@ -1,7 +1,7 @@
-#include "globals.h"
-#include "decoders/decoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
 #include "amiga.h"
-#include "bytes.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 
 uint32_t amigaChecksum(const Bytes& bytes)

arch/amiga/amiga.h

@@ -1,7 +1,7 @@
 #ifndef AMIGA_H
 #define AMIGA_H
 
-#include "encoders/encoders.h"
+#include "lib/encoders/encoders.h"
 
 #define AMIGA_SECTOR_RECORD 0xaaaa44894489LL
 

arch/amiga/decoder.cc

@@ -1,11 +1,11 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "amiga.h"
-#include "bytes.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include "lib/decoders/decoders.pb.h"
 #include <string.h>

arch/amiga/encoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "amiga.h"
-#include "crc.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/crc.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "arch/amiga/amiga.pb.h"
 #include "lib/encoders/encoders.pb.h"
 

arch/apple2/apple2.h

@@ -2,8 +2,8 @@
 #define APPLE2_H
 
 #include <memory.h>
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 
 #define APPLE2_SECTOR_RECORD 0xd5aa96
 #define APPLE2_DATA_RECORD 0xd5aaad

arch/apple2/decoder.cc

@@ -1,13 +1,13 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "apple2.h"
 #include "arch/apple2/apple2.pb.h"
 #include "lib/decoders/decoders.pb.h"
-#include "bytes.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include <string.h>
 #include <algorithm>

arch/apple2/encoder.cc

@@ -1,14 +1,14 @@
-#include "globals.h"
+#include "lib/globals.h"
 #include "arch/apple2/apple2.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
-#include "sector.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
+#include "lib/sector.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "fmt/format.h"
 #include "lib/encoders/encoders.pb.h"
 #include <ctype.h>
-#include "bytes.h"
+#include "lib/bytes.h"
 
 static int encode_data_gcr(uint8_t data)
 {

arch/brother/decoder.cc

@@ -1,12 +1,12 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "brother.h"
-#include "sector.h"
-#include "bytes.h"
-#include "crc.h"
+#include "lib/sector.h"
+#include "lib/bytes.h"
+#include "lib/crc.h"
 #include <ctype.h>
 
 const FluxPattern SECTOR_RECORD_PATTERN(32, BROTHER_SECTOR_RECORD);

arch/brother/encoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "brother.h"
-#include "crc.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/crc.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "arch/brother/brother.pb.h"
 #include "lib/encoders/encoders.pb.h"
 

arch/build.mk

@@ -1,43 +0,0 @@
-LIBARCH_SRCS = \
-	arch/aeslanier/decoder.cc \
-	arch/agat/agat.cc \
-	arch/agat/decoder.cc \
-	arch/agat/encoder.cc \
-	arch/amiga/amiga.cc \
-	arch/amiga/decoder.cc \
-	arch/amiga/encoder.cc \
-	arch/apple2/decoder.cc \
-	arch/apple2/encoder.cc \
-	arch/brother/decoder.cc \
-	arch/brother/encoder.cc \
-	arch/c64/c64.cc \
-	arch/c64/decoder.cc \
-	arch/c64/encoder.cc \
-	arch/f85/decoder.cc \
-	arch/fb100/decoder.cc \
-	arch/ibm/decoder.cc \
-	arch/ibm/encoder.cc \
-	arch/macintosh/decoder.cc \
-	arch/macintosh/encoder.cc \
-	arch/micropolis/decoder.cc \
-	arch/micropolis/encoder.cc \
-	arch/mx/decoder.cc \
-	arch/northstar/decoder.cc \
-	arch/northstar/encoder.cc \
-	arch/rolandd20/decoder.cc \
-	arch/smaky6/decoder.cc \
-	arch/tids990/decoder.cc \
-	arch/tids990/encoder.cc \
-	arch/victor9k/decoder.cc \
-	arch/victor9k/encoder.cc \
-	arch/zilogmcz/decoder.cc \
-
-LIBARCH_OBJS = $(patsubst %.cc, $(OBJDIR)/%.o, $(LIBARCH_SRCS))
-OBJS += $(LIBARCH_OBJS)
-$(LIBARCH_SRCS): | $(PROTO_HDRS)
-$(LIBARCH_SRCS): CFLAGS += $(PROTO_CFLAGS)
-LIBARCH_LIB = $(OBJDIR)/libarch.a
-LIBARCH_LDFLAGS =
-$(LIBARCH_LIB): $(LIBARCH_OBJS)
-
-$(call use-pkgconfig, $(LIBARCH_LIB), $(LIBARCH_OBJS), fmt)

arch/build.py

@@ -0,0 +1,27 @@
+from build.c import cxxlibrary
+from build.protobuf import proto, protocc
+
+proto(
+    name="arch_proto",
+    srcs=[
+        "./aeslanier/aeslanier.proto",
+        "./agat/agat.proto",
+        "./amiga/amiga.proto",
+        "./apple2/apple2.proto",
+        "./brother/brother.proto",
+        "./c64/c64.proto",
+        "./f85/f85.proto",
+        "./fb100/fb100.proto",
+        "./ibm/ibm.proto",
+        "./macintosh/macintosh.proto",
+        "./micropolis/micropolis.proto",
+        "./mx/mx.proto",
+        "./northstar/northstar.proto",
+        "./rolandd20/rolandd20.proto",
+        "./smaky6/smaky6.proto",
+        "./tartu/tartu.proto",
+        "./tids990/tids990.proto",
+        "./victor9k/victor9k.proto",
+        "./zilogmcz/zilogmcz.proto",
+    ],
+)

arch/c64/c64.cc

@@ -1,4 +1,4 @@
-#include "globals.h"
+#include "lib/globals.h"
 #include "c64.h"
 
 /*

arch/c64/c64.h

@@ -1,8 +1,8 @@
 #ifndef C64_H
 #define C64_H
 
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 
 #define C64_SECTOR_RECORD 0xffd49
 #define C64_DATA_RECORD 0xffd57

arch/c64/decoder.cc

@@ -1,12 +1,12 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "c64.h"
-#include "crc.h"
-#include "bytes.h"
+#include "lib/crc.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include <string.h>
 #include <algorithm>

arch/c64/encoder.cc

@@ -1,17 +1,17 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "c64.h"
-#include "crc.h"
-#include "sector.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/crc.h"
+#include "lib/sector.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "fmt/format.h"
 #include "arch/c64/c64.pb.h"
 #include "lib/encoders/encoders.pb.h"
 #include "lib/layout.h"
 #include <ctype.h>
-#include "bytes.h"
+#include "lib/bytes.h"
 
 static bool lastBit;
 
@@ -51,26 +51,6 @@ static void write_bits(
     }
 }
 
-void bindump(std::ostream& stream, std::vector<bool>& buffer)
-{
-    size_t pos = 0;
-
-    while ((pos < buffer.size()) and (pos < 520))
-    {
-        stream << fmt::format("{:5d} : ", pos);
-        for (int i = 0; i < 40; i++)
-        {
-            if ((pos + i) < buffer.size())
-                stream << fmt::format("{:01b}", (buffer[pos + i]));
-            else
-                stream << "-- ";
-            if ((((pos + i + 1) % 8) == 0) and i != 0)
-                stream << "  ";
-        }
-        stream << std::endl;
-        pos += 40;
-    }
-}
 static std::vector<bool> encode_data(uint8_t input)
 {
     /*

arch/f85/decoder.cc

@@ -1,12 +1,12 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "f85.h"
-#include "crc.h"
-#include "bytes.h"
+#include "lib/crc.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include <string.h>
 #include <algorithm>

arch/fb100/decoder.cc

@@ -1,13 +1,13 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "fb100.h"
-#include "crc.h"
-#include "bytes.h"
-#include "decoders/rawbits.h"
+#include "lib/crc.h"
+#include "lib/bytes.h"
+#include "lib/decoders/rawbits.h"
 #include "fmt/format.h"
 #include <string.h>
 #include <algorithm>

arch/ibm/decoder.cc

@@ -1,12 +1,12 @@
-#include "globals.h"
-#include "decoders/decoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
 #include "ibm.h"
-#include "crc.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "sector.h"
+#include "lib/crc.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/sector.h"
 #include "arch/ibm/ibm.pb.h"
-#include "proto.h"
+#include "lib/proto.h"
 #include "lib/layout.h"
 #include <string.h>
 

arch/ibm/encoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "ibm.h"
-#include "crc.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/crc.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "arch/ibm/ibm.pb.h"
 #include "lib/encoders/encoders.pb.h"
 #include "fmt/format.h"

arch/macintosh/decoder.cc

@@ -1,11 +1,11 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "macintosh.h"
-#include "bytes.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include <string.h>
 #include <algorithm>

arch/macintosh/encoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "macintosh.h"
-#include "crc.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/crc.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "fmt/format.h"
 #include "lib/encoders/encoders.pb.h"
 #include "lib/layout.h"

arch/micropolis/decoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "micropolis.h"
-#include "bytes.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include "lib/decoders/decoders.pb.h"
 
@@ -59,6 +59,76 @@ uint8_t mzosChecksum(const Bytes& bytes)
     return checksum;
 }
 
+static uint8_t b(uint32_t field, uint8_t pos)
+{
+    return (field >> pos) & 1;
+}
+
+static uint8_t eccNextBit(uint32_t ecc, uint8_t data_bit)
+{
+    // This is 0x81932080 which is 0x0104C981 with reversed bits
+    return b(ecc, 7) ^ b(ecc, 13) ^ b(ecc, 16) ^ b(ecc, 17) ^ b(ecc, 20) ^
+           b(ecc, 23) ^ b(ecc, 24) ^ b(ecc, 31) ^ data_bit;
+}
+
+uint32_t vectorGraphicEcc(const Bytes& bytes)
+{
+    uint32_t e = 0;
+    Bytes payloadBytes = bytes.slice(0, bytes.size() - 4);
+    ByteReader payload(payloadBytes);
+    while (!payload.eof())
+    {
+        uint8_t byte = payload.read_8();
+        for (int i = 0; i < 8; i++)
+        {
+            e = (e << 1) | eccNextBit(e, byte >> 7);
+            byte <<= 1;
+        }
+    }
+    Bytes trailerBytes = bytes.slice(bytes.size() - 4);
+    ByteReader trailer(trailerBytes);
+    uint32_t res = e;
+    while (!trailer.eof())
+    {
+        uint8_t byte = trailer.read_8();
+        for (int i = 0; i < 8; i++)
+        {
+            res = (res << 1) | eccNextBit(e, byte >> 7);
+            e <<= 1;
+            byte <<= 1;
+        }
+    }
+    return res;
+}
+
+/* Fixes bytes when possible, returning true if changed. */
+static bool vectorGraphicEccFix(Bytes& bytes, uint32_t syndrome)
+{
+    uint32_t ecc = syndrome;
+    int pos = (MICROPOLIS_ENCODED_SECTOR_SIZE - 5) * 8 + 7;
+    bool aligned = false;
+    while ((ecc & 0xff000000) == 0)
+    {
+        pos += 8;
+        ecc <<= 8;
+    }
+    for (; pos >= 0; pos--)
+    {
+        bool bit = ecc & 1;
+        ecc >>= 1;
+        if (bit)
+            ecc ^= 0x808264c0;
+        if ((ecc & 0xff07ffff) == 0)
+            aligned = true;
+        if (aligned && pos % 8 == 0)
+            break;
+    }
+    if (pos < 0)
+        return false;
+    bytes[pos / 8] ^= ecc >> 16;
+    return true;
+}
+
 class MicropolisDecoder : public Decoder
 {
 public:
@@ -85,9 +155,10 @@ public:
         /* Discard a possible partial sector at the end of the track.
          * This partial sector could be mistaken for a conflicted sector, if
          * whatever data read happens to match the checksum of 0, which is
-         * rare, but has been observed on some disks.
+         * rare, but has been observed on some disks. There's 570uS of slack in
+         * each sector, after accounting for preamble, data, and postamble.
          */
-        if (now > (getFluxmapDuration() - 12.5e6))
+        if (now > (getFluxmapDuration() - 12.0e6))
         {
             seekToIndexMark();
             return 0;
@@ -114,9 +185,10 @@ public:
         _sector->headerStartTime = tell().ns();
 
         /* seekToPattern() can skip past the index hole, if this happens
-         * too close to the end of the Fluxmap, discard the sector.
+         * too close to the end of the Fluxmap, discard the sector. The
+         * preamble was expected to be 640uS long.
          */
-        if (_sector->headerStartTime > (getFluxmapDuration() - 12.5e6))
+        if (_sector->headerStartTime > (getFluxmapDuration() - 11.3e6))
         {
             return 0;
         }
@@ -130,6 +202,19 @@ public:
         auto rawbits = readRawBits(MICROPOLIS_ENCODED_SECTOR_SIZE * 16);
         auto bytes =
             decodeFmMfm(rawbits).slice(0, MICROPOLIS_ENCODED_SECTOR_SIZE);
+
+        bool eccPresent = bytes[274] == 0xaa;
+        uint32_t ecc = 0;
+        if (_config.ecc_type() == MicropolisDecoderProto::VECTOR && eccPresent)
+        {
+            ecc = vectorGraphicEcc(bytes.slice(0, 274));
+            if (ecc != 0)
+            {
+                vectorGraphicEccFix(bytes, ecc);
+                ecc = vectorGraphicEcc(bytes.slice(0, 274));
+            }
+        }
+
         ByteReader br(bytes);
 
         int syncByte = br.read_8(); /* sync */
@@ -191,8 +276,10 @@ public:
             _sector->data = bytes;
         else
             error("Sector output size may only be 256 or 275");
-        _sector->status =
-            (wantChecksum == gotChecksum) ? Sector::OK : Sector::BAD_CHECKSUM;
+        if (wantChecksum == gotChecksum && (!eccPresent || ecc == 0))
+            _sector->status = Sector::OK;
+        else
+            _sector->status = Sector::BAD_CHECKSUM;
     }
 
 private:

arch/micropolis/encoder.cc

@@ -1,14 +1,15 @@
-#include "globals.h"
+#include "lib/globals.h"
 #include "micropolis.h"
-#include "sector.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
-#include "image.h"
+#include "lib/sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
+#include "lib/image.h"
 #include "lib/encoders/encoders.pb.h"
 
 static void write_sector(std::vector<bool>& bits,
     unsigned& cursor,
-    const std::shared_ptr<const Sector>& sector)
+    const std::shared_ptr<const Sector>& sector,
+    MicropolisEncoderProto::EccType eccType)
 {
     if ((sector->data.size() != 256) &&
         (sector->data.size() != MICROPOLIS_ENCODED_SECTOR_SIZE))
@@ -45,8 +46,16 @@ static void write_sector(std::vector<bool>& bits,
             writer.write_8(0); /* Padding */
         writer += sector->data;
         writer.write_8(micropolisChecksum(sectorData.slice(1)));
-        for (int i = 0; i < 5; i++)
-            writer.write_8(0); /* 4 byte ECC and ECC not present flag */
+
+        uint8_t eccPresent = 0;
+        uint32_t ecc = 0;
+        if (eccType == MicropolisEncoderProto::VECTOR)
+        {
+            eccPresent = 0xaa;
+            ecc = vectorGraphicEcc(sectorData + Bytes(4));
+        }
+        writer.write_be32(ecc);
+        writer.write_8(eccPresent);
     }
     for (uint8_t b : sectorData)
         fullSector->push_back(b);
@@ -86,18 +95,34 @@ public:
             (_config.rotational_period_ms() * 1e3) / _config.clock_period_us();
 
         std::vector<bool> bits(bitsPerRevolution);
+        std::vector<unsigned> indexes;
+        unsigned prev_cursor = 0;
         unsigned cursor = 0;
 
         for (const auto& sectorData : sectors)
-            write_sector(bits, cursor, sectorData);
+        {
+            indexes.push_back(cursor);
+            prev_cursor = cursor;
+            write_sector(bits, cursor, sectorData, _config.ecc_type());
+        }
+        indexes.push_back(prev_cursor + (cursor - prev_cursor) / 2);
+        indexes.push_back(cursor);
 
         if (cursor != bits.size())
             error("track data mismatched length");
 
         std::unique_ptr<Fluxmap> fluxmap(new Fluxmap);
-        fluxmap->appendBits(bits,
+        nanoseconds_t clockPeriod =
             calculatePhysicalClockPeriod(_config.clock_period_us() * 1e3,
-                _config.rotational_period_ms() * 1e6));
+                _config.rotational_period_ms() * 1e6);
+        auto pos = bits.begin();
+        for (int i = 1; i < indexes.size(); i++)
+        {
+            auto end = bits.begin() + indexes[i];
+            fluxmap->appendBits(std::vector<bool>(pos, end), clockPeriod);
+            fluxmap->appendIndex();
+            pos = end;
+        }
         return fluxmap;
     }
 

arch/micropolis/micropolis.h

@@ -17,5 +17,6 @@ extern std::unique_ptr<Encoder> createMicropolisEncoder(
     const EncoderProto& config);
 
 extern uint8_t micropolisChecksum(const Bytes& bytes);
+extern uint32_t vectorGraphicEcc(const Bytes& bytes);
 
 #endif

arch/micropolis/micropolis.proto

@@ -8,17 +8,30 @@ message MicropolisDecoderProto {
 		MICROPOLIS = 1;
 		MZOS = 2;
 	}
+	enum EccType {
+		NONE = 0;
+		VECTOR = 1;
+	}
 
 	optional int32 sector_output_size = 1 [default = 256,
 		(help) = "How much of the raw sector should be saved. Must be 256 or 275"];
 	optional ChecksumType checksum_type = 2 [default = AUTO,
 		(help) = "Checksum type to use: AUTO, MICROPOLIS, MZOS"];
+	optional EccType ecc_type = 3 [default = NONE,
+		(help) = "ECC type to use: NONE, VECTOR"];
 }
 
 message MicropolisEncoderProto {
+    enum EccType {
+        NONE = 0;
+        VECTOR = 1;
+    }
+
     optional double clock_period_us = 1
         [ default = 2.0, (help) = "clock rate on the real device" ];
     optional double rotational_period_ms = 2
         [ default = 200.0, (help) = "rotational period on the real device" ];
+    optional EccType ecc_type = 3 [default = NONE,
+        (help) = "ECC type to use for IMG data: NONE, VECTOR"];
 }
 

arch/mx/decoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "mx/mx.h"
-#include "crc.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "sector.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "arch/mx/mx.h"
+#include "lib/crc.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/sector.h"
 #include <string.h>
 
 const int SECTOR_SIZE = 256;

arch/mx/mx.h

@@ -1,7 +1,7 @@
 #ifndef MX_H
 #define MX_H
 
-#include "decoders/decoders.h"
+#include "lib/decoders/decoders.h"
 
 extern std::unique_ptr<Decoder> createMxDecoder(const DecoderProto& config);
 

arch/northstar/decoder.cc

@@ -11,13 +11,13 @@
  * sure that the hardSectorId is correct.
  */
 
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "northstar.h"
-#include "bytes.h"
+#include "lib/bytes.h"
 #include "lib/decoders/decoders.pb.h"
 #include "fmt/format.h"
 

arch/northstar/encoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
+#include "lib/globals.h"
 #include "northstar.h"
-#include "sector.h"
-#include "bytes.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
-#include "image.h"
+#include "lib/sector.h"
+#include "lib/bytes.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
+#include "lib/image.h"
 #include "lib/encoders/encoders.pb.h"
 
 #define GAP_FILL_SIZE_SD 30

arch/smaky6/decoder.cc

@@ -1,12 +1,12 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "smaky6.h"
-#include "bytes.h"
-#include "crc.h"
+#include "lib/bytes.h"
+#include "lib/crc.h"
 #include "fmt/format.h"
 #include "lib/decoders/decoders.pb.h"
 #include <string.h>

arch/smaky6/smaky6.proto

@@ -1,6 +1,4 @@
 syntax = "proto2";
 
-import "lib/common.proto";
-
 message Smaky6DecoderProto {}
 

arch/tartu/decoder.cc

@@ -0,0 +1,84 @@
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "arch/tartu/tartu.h"
+#include "lib/crc.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/sector.h"
+#include <string.h>
+
+constexpr uint64_t HEADER_BITS = 0xaaaaaaaa44895554LL;
+constexpr uint64_t DATA_BITS =   0xaaaaaaaa44895545LL;
+
+static const FluxPattern HEADER_PATTERN(64, HEADER_BITS);
+static const FluxPattern DATA_PATTERN(64, DATA_BITS);
+
+const FluxMatchers ANY_RECORD_PATTERN {
+    &HEADER_PATTERN,
+    &DATA_PATTERN
+};
+
+class TartuDecoder : public Decoder
+{
+public:
+    TartuDecoder(const DecoderProto& config):
+        Decoder(config),
+        _config(config.tartu())
+    {
+    }
+
+    void beginTrack() override
+    {
+    }
+
+    nanoseconds_t advanceToNextRecord() override
+    {
+        return seekToPattern(ANY_RECORD_PATTERN);
+    }
+
+    void decodeSectorRecord() override
+    {
+        if (readRaw64() != HEADER_BITS)
+            return;
+
+        auto bits = readRawBits(16 * 4);
+        auto bytes = decodeFmMfm(bits).slice(0, 4);
+        
+        ByteReader br(bytes);
+        uint8_t track = br.read_8();
+        _sector->logicalTrack = track >> 1;
+        _sector->logicalSide = track & 1;
+        br.skip(1); /* seems always to be 1 */
+        _sector->logicalSector = br.read_8();
+        uint8_t wantChecksum = br.read_8();
+        uint8_t gotChecksum = ~sumBytes(bytes.slice(0, 3));
+        
+        if (wantChecksum == gotChecksum)
+            _sector->status = Sector::DATA_MISSING;
+
+        _sector->status = Sector::DATA_MISSING;
+    }
+
+    void decodeDataRecord() override
+    {
+        if (readRaw64() != DATA_BITS)
+            return;
+    
+        const auto& bits = readRawBits(129 * 16);
+        const auto& bytes = decodeFmMfm(bits).slice(0, 129);
+        _sector->data = bytes.slice(0, 128);
+
+        uint8_t wantChecksum = bytes.reader().seek(128).read_8();
+        uint8_t gotChecksum = ~sumBytes(_sector->data);
+        _sector->status = (wantChecksum == gotChecksum) ? Sector::OK : Sector::BAD_CHECKSUM;
+    }
+
+private:
+    const TartuDecoderProto& _config;
+};
+
+std::unique_ptr<Decoder> createTartuDecoder(const DecoderProto& config)
+{
+    return std::unique_ptr<Decoder>(new TartuDecoder(config));
+}
+

arch/tartu/encoder.cc

@@ -0,0 +1,114 @@
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
+#include "arch/tartu/tartu.h"
+#include "lib/crc.h"
+#include "lib/fluxmap.h"
+#include "lib/sector.h"
+#include <string.h>
+
+class TartuEncoder : public Encoder
+{
+public:
+    TartuEncoder(const EncoderProto& config):
+        Encoder(config),
+        _config(config.tartu())
+    {
+    }
+
+    std::unique_ptr<Fluxmap> encode(std::shared_ptr<const TrackInfo>& trackInfo,
+        const std::vector<std::shared_ptr<const Sector>>& sectors,
+        const Image& image) override
+    {
+        _clockRateUs = _config.clock_period_us();
+        int bitsPerRevolution =
+            (_config.target_rotational_period_ms() * 1000.0) / _clockRateUs;
+
+        const auto& sector = *sectors.begin();
+        _bits.resize(bitsPerRevolution);
+        _cursor = 0;
+
+        writeFillerRawBitsUs(_config.gap1_us());
+        bool first = true;
+        for (const auto& sectorData : sectors)
+        {
+            if (!first)
+                writeFillerRawBitsUs(_config.gap4_us());
+            first = false;
+            writeSector(sectorData);
+        }
+
+        if (_cursor > _bits.size())
+            error("track data overrun");
+        writeFillerRawBitsUs(_config.target_rotational_period_ms() * 1000.0);
+
+        std::unique_ptr<Fluxmap> fluxmap(new Fluxmap);
+        fluxmap->appendBits(_bits,
+            calculatePhysicalClockPeriod(_clockRateUs * 1e3,
+                _config.target_rotational_period_ms() * 1e6));
+        return fluxmap;
+    }
+
+private:
+    void writeBytes(const Bytes& bytes)
+    {
+        encodeMfm(_bits, _cursor, bytes, _lastBit);
+    }
+
+    void writeRawBits(uint64_t data, int width)
+    {
+        _cursor += width;
+        _lastBit = data & 1;
+        for (int i = 0; i < width; i++)
+        {
+            unsigned pos = _cursor - i - 1;
+            if (pos < _bits.size())
+                _bits[pos] = data & 1;
+            data >>= 1;
+        }
+    }
+
+    void writeFillerRawBitsUs(double us)
+    {
+        unsigned count = (us / _clockRateUs) / 2;
+        for (int i = 0; i < count; i++)
+            writeRawBits(0b10, 2);
+    };
+
+    void writeSector(const std::shared_ptr<const Sector>& sectorData)
+    {
+        writeRawBits(_config.header_marker(), 64);
+        {
+            Bytes bytes;
+            ByteWriter bw(bytes);
+            bw.write_8(
+                (sectorData->logicalTrack << 1) | sectorData->logicalSide);
+            bw.write_8(1);
+            bw.write_8(sectorData->logicalSector);
+            bw.write_8(~sumBytes(bytes.slice(0, 3)));
+            writeBytes(bytes);
+        }
+
+        writeFillerRawBitsUs(_config.gap3_us());
+        writeRawBits(_config.data_marker(), 64);
+        {
+            Bytes bytes;
+            ByteWriter bw(bytes);
+            bw.append(sectorData->data);
+            bw.write_8(~sumBytes(bytes.slice(0, sectorData->data.size())));
+            writeBytes(bytes);
+        }
+    }
+
+private:
+    const TartuEncoderProto& _config;
+    double _clockRateUs;
+    std::vector<bool> _bits;
+    unsigned _cursor;
+    bool _lastBit;
+};
+
+std::unique_ptr<Encoder> createTartuEncoder(const EncoderProto& config)
+{
+    return std::unique_ptr<Encoder>(new TartuEncoder(config));
+}

arch/tartu/tartu.h

@@ -0,0 +1,8 @@
+#ifndef TARTU_H
+#define TARTU_H
+
+extern std::unique_ptr<Decoder> createTartuDecoder(const DecoderProto& config);
+extern std::unique_ptr<Encoder> createTartuEncoder(const EncoderProto& config);
+
+#endif
+

arch/tartu/tartu.proto

@@ -0,0 +1,27 @@
+syntax = "proto2";
+
+import "lib/common.proto";
+
+message TartuDecoderProto {}
+
+message TartuEncoderProto {
+    optional double clock_period_us = 1
+        [ default = 2.0, (help) = "clock rate on the real device (for MFM)" ];
+    optional double target_rotational_period_ms = 2
+        [ default=200, (help) = "rotational period of target disk" ];
+    optional double gap1_us = 3
+        [ default = 1200,
+          (help) = "size of gap 1 (the post-index gap)" ];
+    optional double gap3_us = 4
+        [ default = 150,
+          (help) = "size of gap 3 (the pre-data gap)" ];
+    optional double gap4_us = 5
+        [ default = 180,
+          (help) = "size of gap 4 (the post-data or format gap)" ];
+    optional uint64 header_marker = 6
+        [ default = 0xaaaaaaaa44895554,
+          (help) = "64-bit raw bit pattern of header record marker" ];
+    optional uint64 data_marker = 7
+        [ default = 0xaaaaaaaa44895545,
+          (help) = "64-bit raw bit pattern of data record marker" ];
+}

arch/tids990/decoder.cc

@@ -1,11 +1,11 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
-#include "tids990/tids990.h"
-#include "crc.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
-#include "sector.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
+#include "arch/tids990/tids990.h"
+#include "lib/crc.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
+#include "lib/sector.h"
 #include <string.h>
 #include <fmt/format.h>
 

arch/tids990/encoder.cc

@@ -1,10 +1,10 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "tids990.h"
-#include "crc.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/crc.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "arch/tids990/tids990.pb.h"
 #include "lib/encoders/encoders.pb.h"
 #include <fmt/format.h>

arch/victor9k/decoder.cc

@@ -1,12 +1,12 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "victor9k.h"
-#include "crc.h"
-#include "bytes.h"
+#include "lib/crc.h"
+#include "lib/bytes.h"
 #include "fmt/format.h"
 #include <string.h>
 #include <algorithm>

arch/victor9k/encoder.cc

@@ -1,17 +1,17 @@
-#include "globals.h"
-#include "decoders/decoders.h"
-#include "encoders/encoders.h"
+#include "lib/globals.h"
+#include "lib/decoders/decoders.h"
+#include "lib/encoders/encoders.h"
 #include "victor9k.h"
-#include "crc.h"
-#include "sector.h"
-#include "readerwriter.h"
-#include "image.h"
+#include "lib/crc.h"
+#include "lib/sector.h"
+#include "lib/readerwriter.h"
+#include "lib/image.h"
 #include "fmt/format.h"
 #include "arch/victor9k/victor9k.pb.h"
 #include "lib/encoders/encoders.pb.h"
 #include "lib/layout.h"
 #include <ctype.h>
-#include "bytes.h"
+#include "lib/bytes.h"
 
 static bool lastBit;
 

arch/zilogmcz/decoder.cc

@@ -1,12 +1,12 @@
-#include "globals.h"
-#include "fluxmap.h"
-#include "decoders/fluxmapreader.h"
+#include "lib/globals.h"
+#include "lib/fluxmap.h"
+#include "lib/decoders/fluxmapreader.h"
 #include "protocol.h"
-#include "decoders/decoders.h"
-#include "sector.h"
+#include "lib/decoders/decoders.h"
+#include "lib/sector.h"
 #include "zilogmcz.h"
-#include "bytes.h"
-#include "crc.h"
+#include "lib/bytes.h"
+#include "lib/crc.h"
 #include "fmt/format.h"
 #include <string.h>
 #include <algorithm>

build.lua

@@ -1,194 +0,0 @@
-vars.cflags = { "$(CFLAGS)" }
-vars.cxxflags = { "$(CXXFLAGS)" }
-vars.ldflags = { "-pthread" }
-
-include "build/protobuf.lua"
-include "build/dependency.lua"
-include "build/tests.lua"
-
-dependency {
-	name = "fmt_dep",
-	pkg_config = "fmt",
-}
-
-dependency {
-	name = "stb_dep",
-	pkg_config = "stb",
-	fallback = "dep/stb+stb"
-}
-
-dependency {
-	name = "protobuf_dep",
-	pkg_config = "protobuf"
-}
-
-dependency {
-	name = "zlib_dep",
-	pkg_config = "zlib"
-}
-
-proto_cc_library {
-	name = "config_lib",
-	srcs = {
-		"./lib/common.proto",
-		"./lib/config.proto",
-		"./lib/decoders/decoders.proto",
-		"./lib/drive.proto",
-		"./lib/encoders/encoders.proto",
-		"./lib/fl2.proto",
-		"./lib/fluxsink/fluxsink.proto",
-		"./lib/fluxsource/fluxsource.proto",
-		"./lib/imagereader/imagereader.proto",
-		"./lib/imagewriter/imagewriter.proto",
-		"./lib/mapper.proto",
-		"./lib/usb/usb.proto",
-		"./arch/aeslanier/aeslanier.proto",
-		"./arch/agat/agat.proto",
-		"./arch/amiga/amiga.proto",
-		"./arch/apple2/apple2.proto",
-		"./arch/brother/brother.proto",
-		"./arch/c64/c64.proto",
-		"./arch/f85/f85.proto",
-		"./arch/fb100/fb100.proto",
-		"./arch/ibm/ibm.proto",
-		"./arch/macintosh/macintosh.proto",
-		"./arch/micropolis/micropolis.proto",
-		"./arch/mx/mx.proto",
-		"./arch/northstar/northstar.proto",
-		"./arch/rolandd20/rolandd20.proto",
-		"./arch/tids990/tids990.proto",
-		"./arch/victor9k/victor9k.proto",
-		"./arch/zilogmcz/zilogmcz.proto",
-	}
-}
-
-clibrary {
-	name = "protocol_lib",
-	hdrs = { "./protocol.h" }
-}
-
-clibrary {
-	name = "libfluxengine",
-	srcs = {
-		"./arch/aeslanier/decoder.cc",
-		"./arch/agat/agat.cc",
-		"./arch/agat/decoder.cc",
-		"./arch/amiga/amiga.cc",
-		"./arch/amiga/decoder.cc",
-		"./arch/amiga/encoder.cc",
-		"./arch/apple2/decoder.cc",
-		"./arch/apple2/encoder.cc",
-		"./arch/brother/decoder.cc",
-		"./arch/brother/encoder.cc",
-		"./arch/c64/c64.cc",
-		"./arch/c64/decoder.cc",
-		"./arch/c64/encoder.cc",
-		"./arch/f85/decoder.cc",
-		"./arch/fb100/decoder.cc",
-		"./arch/ibm/decoder.cc",
-		"./arch/ibm/encoder.cc",
-		"./arch/macintosh/decoder.cc",
-		"./arch/macintosh/encoder.cc",
-		"./arch/micropolis/decoder.cc",
-		"./arch/micropolis/encoder.cc",
-		"./arch/mx/decoder.cc",
-		"./arch/northstar/decoder.cc",
-		"./arch/northstar/encoder.cc",
-		"./arch/rolandd20/rolandd20.cc",
-		"./arch/tids990/decoder.cc",
-		"./arch/tids990/encoder.cc",
-		"./arch/victor9k/decoder.cc",
-		"./arch/victor9k/encoder.cc",
-		"./arch/zilogmcz/decoder.cc",
-		"./lib/bitmap.cc",
-		"./lib/bytes.cc",
-		"./lib/crc.cc",
-		"./lib/csvreader.cc",
-		"./lib/decoders/decoders.cc",
-		"./lib/decoders/fluxdecoder.cc",
-		"./lib/decoders/fluxmapreader.cc",
-		"./lib/decoders/fmmfm.cc",
-		"./lib/encoders/encoders.cc",
-		"./lib/flags.cc",
-		"./lib/fluxmap.cc",
-		"./lib/fluxsink/aufluxsink.cc",
-		"./lib/fluxsink/fl2fluxsink.cc",
-		"./lib/fluxsink/fluxsink.cc",
-		"./lib/fluxsink/hardwarefluxsink.cc",
-		"./lib/fluxsink/scpfluxsink.cc",
-		"./lib/fluxsink/vcdfluxsink.cc",
-		"./lib/fluxsource/cwffluxsource.cc",
-		"./lib/fluxsource/erasefluxsource.cc",
-		"./lib/fluxsource/fl2fluxsource.cc",
-		"./lib/fluxsource/fluxsource.cc",
-		"./lib/fluxsource/hardwarefluxsource.cc",
-		"./lib/fluxsource/kryoflux.cc",
-		"./lib/fluxsource/kryofluxfluxsource.cc",
-		"./lib/fluxsource/scpfluxsource.cc",
-		"./lib/fluxsource/testpatternfluxsource.cc",
-		"./lib/globals.cc",
-		"./lib/hexdump.cc",
-		"./lib/image.cc",
-		"./lib/imagereader/d64imagereader.cc",
-		"./lib/imagereader/d88imagereader.cc",
-		"./lib/imagereader/dimimagereader.cc",
-		"./lib/imagereader/diskcopyimagereader.cc",
-		"./lib/imagereader/fdiimagereader.cc",
-		"./lib/imagereader/imagereader.cc",
-		"./lib/imagereader/imdimagereader.cc",
-		"./lib/imagereader/imgimagereader.cc",
-		"./lib/imagereader/jv3imagereader.cc",
-		"./lib/imagereader/nfdimagereader.cc",
-		"./lib/imagereader/nsiimagereader.cc",
-		"./lib/imagereader/td0imagereader.cc",
-		"./lib/imagewriter/d64imagewriter.cc",
-		"./lib/imagewriter/d88imagewriter.cc",
-		"./lib/imagewriter/diskcopyimagewriter.cc",
-		"./lib/imagewriter/imagewriter.cc",
-		"./lib/imagewriter/imgimagewriter.cc",
-		"./lib/imagewriter/ldbsimagewriter.cc",
-		"./lib/imagewriter/nsiimagewriter.cc",
-		"./lib/imagewriter/rawimagewriter.cc",
-		"./lib/imginputoutpututils.cc",
-		"./lib/ldbs.cc",
-		"./lib/logger.cc",
-		"./lib/mapper.cc",
-		"./lib/proto.cc",
-		"./lib/readerwriter.cc",
-		"./lib/sector.cc",
-		"./lib/usb/fluxengineusb.cc",
-		"./lib/usb/greaseweazle.cc",
-		"./lib/usb/greaseweazleusb.cc",
-		"./lib/usb/serial.cc",
-		"./lib/usb/usb.cc",
-		"./lib/usb/usbfinder.cc",
-		"./lib/utils.cc",
-		"protocol.h",
-	},
-	deps = {
-		"+config_lib",
-		"+protocol_lib",
-		"+fmt_dep",
-		"+protobuf_dep",
-		"+zlib_dep",
-		"dep/libusbp+libusbp",
-	},
-	dep_cflags = { "-Ilib", "-Iarch", "-I." },
-	vars = {
-		["+cflags"] = { "-Ilib", "-Iarch", "-I." }
-	}
-}
-
-installable {
-	name = "all",
-	map = {
-		["fluxengine"] = "src+fluxengine",
-		["fluxengine-gui"] = "src/gui+fluxengine",
-		["brother120tool"] = "tools+brother120tool",
-		["brother240tool"] = "tools+brother240tool",
-		["upgrade-flux-file"] = "tools+upgrade-flux-file",
-	}
-}
-
-include "tests/build.lua"
-

build.py

@@ -0,0 +1,325 @@
+from build.ab import export
+from build.c import clibrary, cxxlibrary
+from build.protobuf import proto, protocc
+from build.pkg import package, hostpackage
+from build.utils import test
+from glob import glob
+import config
+import re
+
+package(name="protobuf_lib", package="protobuf")
+package(name="z_lib", package="zlib")
+package(name="fmt_lib", package="fmt", fallback="dep/fmt")
+package(name="sqlite3_lib", package="sqlite3")
+
+hostpackage(name="protobuf_host_lib", package="protobuf")
+hostpackage(name="z_host_lib", package="zlib")
+hostpackage(name="fmt_host_lib", package="fmt")
+hostpackage(name="sqlite3_host_lib", package="sqlite3")
+
+clibrary(name="protocol", hdrs={"protocol.h": "./protocol.h"})
+
+proto(name="fl2_proto", srcs=["lib/fl2.proto"])
+protocc(name="fl2_proto_lib", srcs=["+fl2_proto"])
+
+cxxlibrary(
+    name="lib",
+    srcs=[
+        "./lib/bitmap.cc",
+        "./lib/bytes.cc",
+        "./lib/config.cc",
+        "./lib/crc.cc",
+        "./lib/csvreader.cc",
+        "./lib/decoders/decoders.cc",
+        "./lib/decoders/fluxdecoder.cc",
+        "./lib/decoders/fluxmapreader.cc",
+        "./lib/decoders/fmmfm.cc",
+        "./lib/encoders/encoders.cc",
+        "./lib/fl2.cc",
+        "./lib/flags.cc",
+        "./lib/fluxmap.cc",
+        "./lib/fluxsink/a2rfluxsink.cc",
+        "./lib/fluxsink/aufluxsink.cc",
+        "./lib/fluxsink/fl2fluxsink.cc",
+        "./lib/fluxsink/fluxsink.cc",
+        "./lib/fluxsink/hardwarefluxsink.cc",
+        "./lib/fluxsink/scpfluxsink.cc",
+        "./lib/fluxsink/vcdfluxsink.cc",
+        "./lib/fluxsource/a2rfluxsource.cc",
+        "./lib/fluxsource/catweasel.cc",
+        "./lib/fluxsource/cwffluxsource.cc",
+        "./lib/fluxsource/dmkfluxsource.cc",
+        "./lib/fluxsource/erasefluxsource.cc",
+        "./lib/fluxsource/fl2fluxsource.cc",
+        "./lib/fluxsource/fluxsource.cc",
+        "./lib/fluxsource/flx.cc",
+        "./lib/fluxsource/flxfluxsource.cc",
+        "./lib/fluxsource/hardwarefluxsource.cc",
+        "./lib/fluxsource/kryoflux.cc",
+        "./lib/fluxsource/kryofluxfluxsource.cc",
+        "./lib/fluxsource/memoryfluxsource.cc",
+        "./lib/fluxsource/scpfluxsource.cc",
+        "./lib/fluxsource/testpatternfluxsource.cc",
+        "./lib/globals.cc",
+        "./lib/hexdump.cc",
+        "./lib/image.cc",
+        "./lib/imagereader/d64imagereader.cc",
+        "./lib/imagereader/d88imagereader.cc",
+        "./lib/imagereader/dimimagereader.cc",
+        "./lib/imagereader/diskcopyimagereader.cc",
+        "./lib/imagereader/fdiimagereader.cc",
+        "./lib/imagereader/imagereader.cc",
+        "./lib/imagereader/imdimagereader.cc",
+        "./lib/imagereader/imgimagereader.cc",
+        "./lib/imagereader/jv3imagereader.cc",
+        "./lib/imagereader/nfdimagereader.cc",
+        "./lib/imagereader/nsiimagereader.cc",
+        "./lib/imagereader/td0imagereader.cc",
+        "./lib/imagewriter/d64imagewriter.cc",
+        "./lib/imagewriter/d88imagewriter.cc",
+        "./lib/imagewriter/diskcopyimagewriter.cc",
+        "./lib/imagewriter/imagewriter.cc",
+        "./lib/imagewriter/imdimagewriter.cc",
+        "./lib/imagewriter/imgimagewriter.cc",
+        "./lib/imagewriter/ldbsimagewriter.cc",
+        "./lib/imagewriter/nsiimagewriter.cc",
+        "./lib/imagewriter/rawimagewriter.cc",
+        "./lib/layout.cc",
+        "./lib/ldbs.cc",
+        "./lib/logger.cc",
+        "./lib/proto.cc",
+        "./lib/readerwriter.cc",
+        "./lib/sector.cc",
+        "./lib/usb/fluxengineusb.cc",
+        "./lib/usb/greaseweazle.cc",
+        "./lib/usb/greaseweazleusb.cc",
+        "./lib/usb/serial.cc",
+        "./lib/usb/usb.cc",
+        "./lib/usb/usbfinder.cc",
+        "./lib/utils.cc",
+        "./lib/vfs/acorndfs.cc",
+        "./lib/vfs/amigaffs.cc",
+        "./lib/vfs/appledos.cc",
+        "./lib/vfs/applesingle.cc",
+        "./lib/vfs/brother120fs.cc",
+        "./lib/vfs/cbmfs.cc",
+        "./lib/vfs/cpmfs.cc",
+        "./lib/vfs/fatfs.cc",
+        "./lib/vfs/fluxsectorinterface.cc",
+        "./lib/vfs/imagesectorinterface.cc",
+        "./lib/vfs/lif.cc",
+        "./lib/vfs/machfs.cc",
+        "./lib/vfs/microdos.cc",
+        "./lib/vfs/philefs.cc",
+        "./lib/vfs/prodos.cc",
+        "./lib/vfs/roland.cc",
+        "./lib/vfs/smaky6fs.cc",
+        "./lib/vfs/vfs.cc",
+        "./lib/vfs/zdos.cc",
+        "./arch/aeslanier/decoder.cc",
+        "./arch/agat/agat.cc",
+        "./arch/agat/decoder.cc",
+        "./arch/agat/encoder.cc",
+        "./arch/amiga/amiga.cc",
+        "./arch/amiga/decoder.cc",
+        "./arch/amiga/encoder.cc",
+        "./arch/apple2/decoder.cc",
+        "./arch/apple2/encoder.cc",
+        "./arch/brother/decoder.cc",
+        "./arch/brother/encoder.cc",
+        "./arch/c64/c64.cc",
+        "./arch/c64/decoder.cc",
+        "./arch/c64/encoder.cc",
+        "./arch/f85/decoder.cc",
+        "./arch/fb100/decoder.cc",
+        "./arch/ibm/decoder.cc",
+        "./arch/ibm/encoder.cc",
+        "./arch/macintosh/decoder.cc",
+        "./arch/macintosh/encoder.cc",
+        "./arch/micropolis/decoder.cc",
+        "./arch/micropolis/encoder.cc",
+        "./arch/mx/decoder.cc",
+        "./arch/northstar/decoder.cc",
+        "./arch/northstar/encoder.cc",
+        "./arch/rolandd20/decoder.cc",
+        "./arch/smaky6/decoder.cc",
+        "./arch/tartu/decoder.cc",
+        "./arch/tartu/encoder.cc",
+        "./arch/tids990/decoder.cc",
+        "./arch/tids990/encoder.cc",
+        "./arch/victor9k/decoder.cc",
+        "./arch/victor9k/encoder.cc",
+        "./arch/zilogmcz/decoder.cc",
+    ],
+    hdrs={
+        "arch/ibm/ibm.h": "./arch/ibm/ibm.h",
+        "arch/apple2/data_gcr.h": "./arch/apple2/data_gcr.h",
+        "arch/apple2/apple2.h": "./arch/apple2/apple2.h",
+        "arch/smaky6/smaky6.h": "./arch/smaky6/smaky6.h",
+        "arch/tids990/tids990.h": "./arch/tids990/tids990.h",
+        "arch/zilogmcz/zilogmcz.h": "./arch/zilogmcz/zilogmcz.h",
+        "arch/amiga/amiga.h": "./arch/amiga/amiga.h",
+        "arch/f85/data_gcr.h": "./arch/f85/data_gcr.h",
+        "arch/f85/f85.h": "./arch/f85/f85.h",
+        "arch/mx/mx.h": "./arch/mx/mx.h",
+        "arch/aeslanier/aeslanier.h": "./arch/aeslanier/aeslanier.h",
+        "arch/northstar/northstar.h": "./arch/northstar/northstar.h",
+        "arch/brother/data_gcr.h": "./arch/brother/data_gcr.h",
+        "arch/brother/brother.h": "./arch/brother/brother.h",
+        "arch/brother/header_gcr.h": "./arch/brother/header_gcr.h",
+        "arch/macintosh/data_gcr.h": "./arch/macintosh/data_gcr.h",
+        "arch/macintosh/macintosh.h": "./arch/macintosh/macintosh.h",
+        "arch/agat/agat.h": "./arch/agat/agat.h",
+        "arch/fb100/fb100.h": "./arch/fb100/fb100.h",
+        "arch/victor9k/data_gcr.h": "./arch/victor9k/data_gcr.h",
+        "arch/victor9k/victor9k.h": "./arch/victor9k/victor9k.h",
+        "arch/rolandd20/rolandd20.h": "./arch/rolandd20/rolandd20.h",
+        "arch/micropolis/micropolis.h": "./arch/micropolis/micropolis.h",
+        "arch/c64/data_gcr.h": "./arch/c64/data_gcr.h",
+        "arch/c64/c64.h": "./arch/c64/c64.h",
+        "arch/tartu/tartu.h": "./arch/tartu/tartu.h",
+        "lib/a2r.h": "./lib/a2r.h",
+        "lib/bitmap.h": "./lib/bitmap.h",
+        "lib/bytes.h": "./lib/bytes.h",
+        "lib/config.h": "./lib/config.h",
+        "lib/crc.h": "./lib/crc.h",
+        "lib/csvreader.h": "./lib/csvreader.h",
+        "lib/decoders/decoders.h": "./lib/decoders/decoders.h",
+        "lib/decoders/fluxdecoder.h": "./lib/decoders/fluxdecoder.h",
+        "lib/decoders/fluxmapreader.h": "./lib/decoders/fluxmapreader.h",
+        "lib/decoders/rawbits.h": "./lib/decoders/rawbits.h",
+        "lib/encoders/encoders.h": "./lib/encoders/encoders.h",
+        "lib/scp.h": "./lib/scp.h",
+        "lib/fl2.h": "./lib/fl2.h",
+        "lib/flags.h": "./lib/flags.h",
+        "lib/flux.h": "./lib/flux.h",
+        "lib/fluxmap.h": "./lib/fluxmap.h",
+        "lib/fluxsink/fluxsink.h": "./lib/fluxsink/fluxsink.h",
+        "lib/fluxsource/catweasel.h": "lib/fluxsource/catweasel.h",
+        "lib/fluxsource/fluxsource.h": "lib/fluxsource/fluxsource.h",
+        "lib/fluxsource/flx.h": "lib/fluxsource/flx.h",
+        "lib/fluxsource/kryoflux.h": "lib/fluxsource/kryoflux.h",
+        "lib/globals.h": "./lib/globals.h",
+        "lib/image.h": "./lib/image.h",
+        "lib/imagereader/imagereader.h": "./lib/imagereader/imagereader.h",
+        "lib/imagewriter/imagewriter.h": "./lib/imagewriter/imagewriter.h",
+        "lib/layout.h": "./lib/layout.h",
+        "lib/ldbs.h": "./lib/ldbs.h",
+        "lib/logger.h": "./lib/logger.h",
+        "lib/proto.h": "./lib/proto.h",
+        "lib/readerwriter.h": "./lib/readerwriter.h",
+        "lib/sector.h": "./lib/sector.h",
+        "lib/usb/greaseweazle.h": "./lib/usb/greaseweazle.h",
+        "lib/usb/usb.h": "./lib/usb/usb.h",
+        "lib/usb/usbfinder.h": "./lib/usb/usbfinder.h",
+        "lib/utils.h": "./lib/utils.h",
+        "lib/vfs/applesingle.h": "./lib/vfs/applesingle.h",
+        "lib/vfs/sectorinterface.h": "./lib/vfs/sectorinterface.h",
+        "lib/vfs/vfs.h": "./lib/vfs/vfs.h",
+    },
+    deps=[
+        "+fl2_proto_lib",
+        "+fmt_lib",
+        "+protocol",
+        "dep/adflib",
+        "dep/agg",
+        "dep/fatfs",
+        "dep/hfsutils",
+        "dep/libusbp",
+        "dep/stb",
+        "lib+config_proto_lib",
+    ],
+)
+
+corpustests = []
+if not glob("../fluxengine-testdata/data"):
+    print("fluxengine-testdata not found; skipping corpus tests")
+else:
+    corpus = [
+        ("acorndfs", "", "--200"),
+        ("agat", "", ""),
+        ("amiga", "", ""),
+        ("apple2", "", "--140 40track_drive"),
+        ("atarist", "", "--360"),
+        ("atarist", "", "--370"),
+        ("atarist", "", "--400"),
+        ("atarist", "", "--410"),
+        ("atarist", "", "--720"),
+        ("atarist", "", "--740"),
+        ("atarist", "", "--800"),
+        ("atarist", "", "--820"),
+        ("bk", "", ""),
+        ("brother", "", "--120 40track_drive"),
+        ("brother", "", "--240"),
+        (
+            "commodore",
+            "scripts/commodore1541_test.textpb",
+            "--171 40track_drive",
+        ),
+        (
+            "commodore",
+            "scripts/commodore1541_test.textpb",
+            "--192 40track_drive",
+        ),
+        ("commodore", "", "--800"),
+        ("commodore", "", "--1620"),
+        ("hplif", "", "--264"),
+        ("hplif", "", "--608"),
+        ("hplif", "", "--616"),
+        ("hplif", "", "--770"),
+        ("ibm", "", "--1200"),
+        ("ibm", "", "--1232"),
+        ("ibm", "", "--1440"),
+        ("ibm", "", "--1680"),
+        ("ibm", "", "--180 40track_drive"),
+        ("ibm", "", "--160 40track_drive"),
+        ("ibm", "", "--320 40track_drive"),
+        ("ibm", "", "--360 40track_drive"),
+        ("ibm", "", "--720_96"),
+        ("ibm", "", "--720_135"),
+        ("mac", "scripts/mac400_test.textpb", "--400"),
+        ("mac", "scripts/mac800_test.textpb", "--800"),
+        ("n88basic", "", ""),
+        ("rx50", "", ""),
+        ("tartu", "", "--390 40track_drive"),
+        ("tartu", "", "--780"),
+        ("tids990", "", ""),
+        ("victor9k", "", "--612"),
+        ("victor9k", "", "--1224"),
+    ]
+
+    for c in corpus:
+        name = re.sub(r"[^a-zA-Z0-9]", "_", "".join(c), 0)
+        corpustests += [
+            test(
+                name=f"corpustest_{name}_{format}",
+                ins=["src+fluxengine"],
+                deps=["scripts/encodedecodetest.sh"],
+                commands=[
+                    "{deps[0]} "
+                    + c[0]
+                    + " "
+                    + format
+                    + " {ins[0]} '"
+                    + c[1]
+                    + "' '"
+                    + c[2]
+                    + "' $(dir {outs[0]}) > /dev/null"
+                ],
+                label="CORPUSTEST",
+            )
+            for format in ["scp", "flux"]
+        ]
+
+export(
+    name="all",
+    items={
+        "fluxengine$(EXT)": "src+fluxengine",
+        "fluxengine-gui$(EXT)": "src/gui",
+        "brother120tool$(EXT)": "tools+brother120tool",
+        "brother240tool$(EXT)": "tools+brother240tool",
+        "upgrade-flux-file$(EXT)": "tools+upgrade-flux-file",
+    }
+    | ({"FluxEngine.pkg": "src/gui+fluxengine_pkg"} if config.osx else {}),
+    deps=["tests", "src/formats+docs", "scripts+mkdocindex"] + corpustests,
+)

build/_objectify.py

@@ -0,0 +1,19 @@
+import sys
+from functools import partial
+
+if len(sys.argv) != 3:
+    sys.exit("Usage: %s <file> <symbol>" % sys.argv[0])
+filename = sys.argv[1]
+symbol = sys.argv[2]
+
+print("const uint8_t " + symbol + "[] = {")
+n = 0
+with open(filename, "rb") as in_file:
+    for c in iter(partial(in_file.read, 1), b""):
+        print("0x%02X," % ord(c), end="")
+        n += 1
+        if n % 16 == 0:
+            print()
+print("};")
+
+print("const size_t " + symbol + "_len = sizeof(" + symbol + ");")

build/ab.mk

@@ -0,0 +1,55 @@
+ifeq ($(findstring 4.,$(MAKE_VERSION)),)
+$(error You need GNU Make 4.x for this (if you're on OSX, use gmake).)
+endif
+
+OBJ ?= .obj
+PYTHON ?= python3
+CC ?= gcc
+CXX ?= g++
+AR ?= ar
+CFLAGS ?= -g -Og
+LDFLAGS ?= -g
+PKG_CONFIG ?= pkg-config
+ECHO ?= echo
+TARGETS ?= +all
+
+ifdef VERBOSE
+	hide =
+else
+	ifdef V
+		hide =
+	else
+		hide = @
+	endif
+endif
+
+ifeq ($(OS), Windows_NT)
+	EXT ?= .exe
+endif
+EXT ?=
+
+include $(OBJ)/build.mk
+
+MAKEFLAGS += -r
+.DELETE_ON_ERROR:
+
+.PHONY: update-ab
+update-ab:
+	@echo "Press RETURN to update ab from the repository, or CTRL+C to cancel." \
+		&& read a \
+		&& (curl -L https://github.com/davidgiven/ab/releases/download/dev/distribution.tar.xz | tar xvJf -) \
+		&& echo "Done."
+
+.PHONY: clean
+clean::
+	@echo CLEAN
+	$(hide) rm -rf $(OBJ)
+
+export PYTHONHASHSEED = 1
+build-files = $(shell find . -name 'build.py') $(wildcard build/*.py) $(wildcard config.py)
+$(OBJ)/build.mk: Makefile $(build-files)
+	@echo "AB"
+	@mkdir -p $(OBJ)
+	$(hide) $(PYTHON) -X pycache_prefix=$(OBJ) build/ab.py $(patsubst %,-t %,$(TARGETS)) -o $@ \
+		build.py || rm -f $@
+

build/ab.py

@@ -0,0 +1,562 @@
+from collections.abc import Iterable, Sequence
+from os.path import *
+from types import SimpleNamespace
+import argparse
+import functools
+import importlib
+import importlib.abc
+import importlib.util
+import inspect
+import re
+import sys
+import builtins
+import string
+import fnmatch
+import traceback
+
+defaultGlobals = {}
+targets = {}
+unmaterialisedTargets = set()
+materialisingStack = []
+outputFp = None
+cwdStack = [""]
+
+sys.path += ["."]
+old_import = builtins.__import__
+
+
+def new_import(name, *args, **kwargs):
+    if name not in sys.modules:
+        path = name.replace(".", "/") + ".py"
+        if isfile(path):
+            sys.stderr.write(f"loading {path}\n")
+            loader = importlib.machinery.SourceFileLoader(name, path)
+
+            spec = importlib.util.spec_from_loader(
+                name, loader, origin="built-in"
+            )
+            module = importlib.util.module_from_spec(spec)
+            sys.modules[name] = module
+            cwdStack.append(dirname(path))
+            spec.loader.exec_module(module)
+            cwdStack.pop()
+
+    return old_import(name, *args, **kwargs)
+
+
+builtins.__import__ = new_import
+
+
+class ABException(BaseException):
+    pass
+
+
+class Invocation:
+    name = None
+    callback = None
+    types = None
+    ins = None
+    outs = None
+    binding = None
+    traits = None
+    attr = None
+    attrdeps = None
+
+    def __init__(self):
+        self.attr = SimpleNamespace()
+        self.attrdeps = SimpleNamespace()
+        self.traits = set()
+
+    def __eq__(self, other):
+        return self.name is other.name
+
+    def __hash__(self):
+        return id(self.name)
+
+    def materialise(self, replacing=False):
+        if self in unmaterialisedTargets:
+            if not replacing and (self in materialisingStack):
+                print("Found dependency cycle:")
+                for i in materialisingStack:
+                    print(f"  {i.name}")
+                print(f"  {self.name}")
+                sys.exit(1)
+
+            materialisingStack.append(self)
+
+            # Perform type conversion to the declared rule parameter types.
+
+            try:
+                self.args = {}
+                for k, v in self.binding.arguments.items():
+                    if k != "kwargs":
+                        t = self.types.get(k, None)
+                        if t:
+                            v = t(v).convert(self)
+                        self.args[k] = v
+                    else:
+                        for kk, vv in v.items():
+                            t = self.types.get(kk, None)
+                            if t:
+                                vv = t(vv).convert(self)
+                            self.args[kk] = vv
+
+                # Actually call the callback.
+
+                cwdStack.append(self.cwd)
+                self.callback(**self.args)
+                cwdStack.pop()
+            except BaseException as e:
+                print(f"Error materialising {self}: {self.callback}")
+                print(f"Arguments: {self.args}")
+                raise e
+
+            if self.outs is None:
+                raise ABException(f"{self.name} didn't set self.outs")
+
+            if self in unmaterialisedTargets:
+                unmaterialisedTargets.remove(self)
+
+            materialisingStack.pop()
+
+    def bubbleattr(self, attr, xs):
+        xs = targetsof(xs, cwd=self.cwd)
+        a = set()
+        if hasattr(self.attrdeps, attr):
+            a = getattr(self.attrdeps, attr)
+
+        for x in xs:
+            a.add(x)
+        setattr(self.attrdeps, attr, a)
+
+    def __repr__(self):
+        return "'%s'" % self.name
+
+
+def Rule(func):
+    sig = inspect.signature(func)
+
+    @functools.wraps(func)
+    def wrapper(*, name=None, replaces=None, **kwargs):
+        cwd = None
+        if name:
+            if ("+" in name) and not name.startswith("+"):
+                (cwd, _) = name.split("+", 1)
+        if not cwd:
+            cwd = cwdStack[-1]
+
+        if name:
+            i = Invocation()
+            if name.startswith("./"):
+                name = join(cwd, name)
+            elif "+" not in name:
+                name = join(cwd, "+" + name)
+
+            i.name = name
+            i.localname = name.split("+")[-1]
+
+            if name in targets:
+                raise ABException(f"target {i.name} has already been defined")
+            targets[name] = i
+        elif replaces:
+            i = replaces
+            name = i.name
+        else:
+            raise ABException("you must supply either 'name' or 'replaces'")
+
+        i.cwd = cwd
+        i.sentinel = "$(OBJ)/.sentinels/" + name + ".mark"
+        i.types = func.__annotations__
+        i.callback = func
+        i.traits.add(func.__name__)
+
+        i.binding = sig.bind(name=name, self=i, **kwargs)
+        i.binding.apply_defaults()
+
+        unmaterialisedTargets.add(i)
+        if replaces:
+            i.materialise(replacing=True)
+        return i
+
+    defaultGlobals[func.__name__] = wrapper
+    return wrapper
+
+
+class Type:
+    def __init__(self, value):
+        self.value = value
+
+
+class List(Type):
+    def convert(self, invocation):
+        value = self.value
+        if not value:
+            return []
+        if type(value) is str:
+            return [value]
+        return list(value)
+
+
+class Targets(Type):
+    def convert(self, invocation):
+        value = self.value
+        if not value:
+            return []
+        if type(value) is str:
+            value = [value]
+        if type(value) is list:
+            value = targetsof(value, cwd=invocation.cwd)
+        return value
+
+
+class Target(Type):
+    def convert(self, invocation):
+        value = self.value
+        if not value:
+            return None
+        return targetof(value, cwd=invocation.cwd)
+
+
+class TargetsMap(Type):
+    def convert(self, invocation):
+        value = self.value
+        if not value:
+            return {}
+        if type(value) is dict:
+            return {
+                k: targetof(v, cwd=invocation.cwd) for k, v in value.items()
+            }
+        raise ABException(f"wanted a dict of targets, got a {type(value)}")
+
+
+def flatten(*xs):
+    def recurse(xs):
+        for x in xs:
+            if isinstance(x, Iterable) and not isinstance(x, (str, bytes)):
+                yield from recurse(x)
+            else:
+                yield x
+
+    return list(recurse(xs))
+
+
+def fileinvocation(s):
+    i = Invocation()
+    i.name = s
+    i.outs = [s]
+    targets[s] = i
+    return i
+
+
+def targetof(s, cwd=None):
+    if isinstance(s, Invocation):
+        s.materialise()
+        return s
+
+    if type(s) != str:
+        raise ABException("parameter of targetof is not a single target")
+
+    if s in targets:
+        t = targets[s]
+        t.materialise()
+        return t
+
+    if s.startswith("."):
+        if cwd == None:
+            raise ABException(
+                "relative target names can't be used in targetof without supplying cwd"
+            )
+        if s.startswith(".+"):
+            s = cwd + s[1:]
+        elif s.startswith("./"):
+            s = normpath(join(cwd, s))
+
+    elif s.endswith("/"):
+        return fileinvocation(s)
+    elif s.startswith("$"):
+        return fileinvocation(s)
+
+    if "+" not in s:
+        if isdir(s):
+            s = s + "+" + basename(s)
+        else:
+            return fileinvocation(s)
+
+    (path, target) = s.split("+", 2)
+    s = join(path, "+" + target)
+    loadbuildfile(join(path, "build.py"))
+    if not s in targets:
+        raise ABException(
+            f"build file at {path} doesn't contain +{target} when trying to resolve {s}"
+        )
+    i = targets[s]
+    i.materialise()
+    return i
+
+
+def targetsof(*xs, cwd=None):
+    return flatten([targetof(x, cwd) for x in flatten(xs)])
+
+
+def filenamesof(*xs):
+    s = []
+    for t in flatten(xs):
+        if type(t) == str:
+            t = normpath(t)
+            s += [t]
+        else:
+            s += [f for f in [normpath(f) for f in filenamesof(t.outs)]]
+    return s
+
+
+def filenamesmatchingof(xs, pattern):
+    return fnmatch.filter(filenamesof(xs), pattern)
+
+
+def targetswithtraitsof(xs, trait):
+    return [target for target in targetsof(xs) if trait in target.traits]
+
+
+def targetnamesof(*xs):
+    s = []
+    for x in flatten(xs):
+        if type(x) == str:
+            x = normpath(x)
+            if x not in s:
+                s += [x]
+        else:
+            if x.name not in s:
+                s += [x.name]
+    return s
+
+
+def filenameof(x):
+    xs = filenamesof(x)
+    if len(xs) != 1:
+        raise ABException("expected a single item")
+    return xs[0]
+
+
+def bubbledattrsof(x, attr):
+    x = targetsof(x)
+    alltargets = set()
+    pending = set(x) if isinstance(x, Iterable) else {x}
+    while pending:
+        t = pending.pop()
+        if t not in alltargets:
+            alltargets.add(t)
+            if hasattr(t.attrdeps, attr):
+                pending.update(getattr(t.attrdeps, attr))
+
+    values = []
+    for t in alltargets:
+        if hasattr(t.attr, attr):
+            values += getattr(t.attr, attr)
+    return values
+
+
+def stripext(path):
+    return splitext(path)[0]
+
+
+def emit(*args):
+    outputFp.write(" ".join(flatten(args)))
+    outputFp.write("\n")
+
+
+def templateexpand(s, invocation):
+    class Formatter(string.Formatter):
+        def get_field(self, name, a1, a2):
+            return (
+                eval(name, invocation.callback.__globals__, invocation.args),
+                False,
+            )
+
+        def format_field(self, value, format_spec):
+            if type(self) == str:
+                return value
+            return " ".join(
+                [templateexpand(f, invocation) for f in filenamesof(value)]
+            )
+
+    return Formatter().format(s)
+
+
+def emitter_rule(rule, ins, outs, deps=[]):
+    emit("")
+    emit(".PHONY:", rule.name)
+    emit(rule.name, ":", rule.sentinel)
+
+    emit(
+        rule.sentinel,
+        # filenamesof(outs) if outs else [],
+        ":",
+        filenamesof(ins),
+        filenamesof(deps),
+    )
+
+
+def emitter_endrule(rule, outs):
+    emit("\t$(hide) mkdir -p", dirname(rule.sentinel))
+    emit("\t$(hide) touch", rule.sentinel)
+
+    for f in filenamesof(outs):
+        emit(".SECONDARY:", f)
+        emit(f, ":", rule.sentinel, ";")
+
+
+def emitter_label(s):
+    emit("\t$(hide)", "$(ECHO)", s)
+
+
+def emitter_exec(cs):
+    for c in cs:
+        emit("\t$(hide)", c)
+
+
+def unmake(*ss):
+    return [
+        re.sub(r"\$\(([^)]*)\)", r"$\1", s) for s in flatten(filenamesof(ss))
+    ]
+
+
+@Rule
+def simplerule(
+    self,
+    name,
+    ins: Targets = None,
+    outs: List = [],
+    deps: Targets = None,
+    commands: List = [],
+    label="RULE",
+    **kwargs,
+):
+    self.ins = ins
+    self.outs = outs
+    self.deps = deps
+    emitter_rule(self, ins + deps, outs)
+    emitter_label(templateexpand("{label} {name}", self))
+
+    dirs = []
+    cs = []
+    for out in filenamesof(outs):
+        dir = dirname(out)
+        if dir and dir not in dirs:
+            dirs += [dir]
+
+        cs = [("mkdir -p %s" % dir) for dir in dirs]
+
+    for c in commands:
+        cs += [templateexpand(c, self)]
+
+    emitter_exec(cs)
+    emitter_endrule(self, outs)
+
+
+@Rule
+def normalrule(
+    self,
+    name=None,
+    ins: Targets = None,
+    deps: Targets = None,
+    outs: List = [],
+    label="RULE",
+    objdir=None,
+    commands: List = [],
+    **kwargs,
+):
+    objdir = objdir or join("$(OBJ)", name)
+
+    self.attr.objdir = objdir
+    simplerule(
+        replaces=self,
+        ins=ins,
+        deps=deps,
+        outs=[join(objdir, f) for f in outs],
+        label=label,
+        commands=commands,
+        **kwargs,
+    )
+
+
+@Rule
+def export(self, name=None, items: TargetsMap = {}, deps: Targets = None):
+    cs = []
+    self.ins = []
+    self.outs = []
+    for dest, src in items.items():
+        destf = filenameof(dest)
+        dir = dirname(destf)
+
+        srcs = filenamesof(src)
+        if len(srcs) != 1:
+            raise ABException(
+                "a dependency of an export must have exactly one output file"
+            )
+
+        subrule = simplerule(
+            name=self.name + "/+" + destf,
+            ins=[srcs[0]],
+            outs=[destf],
+            commands=["cp %s %s" % (srcs[0], destf)],
+            label="CP",
+        )
+        subrule.materialise()
+        emit("clean::")
+        emit("\t$(hide) rm -f", destf)
+
+        self.ins += [subrule]
+
+    emitter_rule(
+        self,
+        self.ins,
+        self.outs,
+        [(d.outs if d.outs else d.sentinel) for d in deps],
+    )
+    emitter_endrule(self, self.outs)
+
+
+def loadbuildfile(filename):
+    filename = filename.replace("/", ".").removesuffix(".py")
+    builtins.__import__(filename)
+
+
+def load(filename):
+    loadbuildfile(filename)
+    callerglobals = inspect.stack()[1][0].f_globals
+    for k, v in defaultGlobals.items():
+        callerglobals[k] = v
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-o", "--output")
+    parser.add_argument("files", nargs="+")
+    parser.add_argument("-t", "--targets", action="append")
+    args = parser.parse_args()
+    if not args.targets:
+        raise ABException("no targets supplied")
+
+    global outputFp
+    outputFp = open(args.output, "wt")
+
+    for k in ("Rule", "Targets", "load", "filenamesof", "stripext"):
+        defaultGlobals[k] = globals()[k]
+
+    global __name__
+    sys.modules["build.ab"] = sys.modules[__name__]
+    __name__ = "build.ab"
+
+    for f in args.files:
+        loadbuildfile(f)
+
+    for t in flatten([a.split(",") for a in args.targets]):
+        (path, target) = t.split("+", 2)
+        s = join(path, "+" + target)
+        if s not in targets:
+            raise ABException("target %s is not defined" % s)
+        targets[s].materialise()
+    emit("AB_LOADED = 1\n")
+
+
+main()

build/build.lua

@@ -1,251 +0,0 @@
-local OBJDIR = "$(OBJDIR)"
-
-local function objdir(e)
-	return concatpath(OBJDIR, e.cwd, e.name)
-end
-
-definerule("normalrule",
-	{
-		ins = { type="targets" },
-		deps = { type="targets", default={} },
-		outs = { type="targets", default={} },
-		outleaves = { type="strings" },
-		label = { type="string", optional=true },
-		objdir = { type="string", optional=true },
-		commands = { type="strings" },
-	},
-	function (e)
-		local dir = e.objdir or objdir(e)
-		local realouts = {}
-		for _, v in pairs(e.outleaves) do
-			realouts[#realouts+1] = concatpath(dir, v)
-		end
-
-		local vars = inherit(e.vars, {
-			dir = dir
-		})
-
-		local result = simplerule {
-			name = e.name,
-			ins = e.ins,
-			deps = e.deps,
-			outs = concat(realouts, filenamesof(e.outs)),
-			label = e.label,
-			commands = e.commands,
-			vars = vars,
-		}
-		result.dir = dir
-		return result
-	end
-)
-
-local function is_clike(f)
-	return f:find("%.c$") or f:find("%.cc$") or f:find("%.cpp$")
-end
-
-definerule("cfile",
-	{
-		srcs = { type="targets" },
-		deps = { type="targets", default={} }
-	},
-	function (e)
-		local cflags = e.vars.cflags
-		local cxxflags = e.vars.cxxflags
-		for _, target in ipairs(targetsof(e.deps)) do
-			if target.is.clibrary then
-				cflags = concat(cflags, target.dep_cflags)
-				cxxflags = concat(cxxflags, target.dep_cxxflags)
-			end
-		end
-
-		local src = filter(filenamesof(e.srcs), is_clike)
-		local cmd
-		local cxx = false
-		if src[1]:find("%.c$") then
-			cmd = "$(CC) -c -o %{outs[1]} %{ins[1]} %{hdrpaths} %{cflags}"
-		else
-			cmd = "$(CXX) -c -o %{outs[1]} %{ins[1]} %{hdrpaths} %{cflags} %{cxxflags}"
-			cxx = true
-		end
-
-		local outleaf = basename(e.name)..".o"
-		local rule = normalrule {
-			name = e.name,
-			cwd = e.cwd,
-			ins = e.srcs,
-			deps = e.deps,
-			outleaves = {outleaf},
-			label = e.label,
-			commands = cmd,
-			vars = {
-				hdrpaths = {},
-				cflags = cflags,
-				cxxflags = cxxflags,
-			}
-		}
-
-		rule.is.cxxfile = cxx
-		return rule
-	end
-)
-
-local function do_cfiles(e)
-	local outs = {}
-	local srcs = filenamesof(e.srcs)
-	for _, f in ipairs(sorted(filter(srcs, is_clike))) do
-		local ofile
-		if f:find(OBJDIR, 1, true) == 1 then
-			ofile = e.name.."/"..f:sub(#OBJDIR+1)..".o"
-		else
-			ofile = e.name.."/"..f..".o"
-		end
-		outs[#outs+1] = cfile {
-			name = ofile,
-			srcs = { f },
-			deps = e.deps
-		}
-	end
-	return outs
-end
-
-definerule("clibrary",
-	{
-		srcs = { type="targets", default={} },
-		deps = { type="targets", default={} },
-		hdrs = { type="targets", default={} },
-		dep_cflags = { type="strings", default={} },
-		dep_cxxflags = { type="strings", default={} },
-		dep_ldflags = { type="strings", default={} },
-		dep_libs = { type="strings", default={} },
-	},
-	function (e)
-		local ins = do_cfiles(e)
-		local cxx = false
-		for _, f in ipairs(ins) do
-			if f.is.cxxfile then
-				cxx = true
-				break
-			end
-		end
-
-		local mkdirs = {}
-		local copies = {}
-		local outs = {}
-		local function copy_file(src, dest)
-			mkdirs[#mkdirs+1] = "mkdir -p %{dir}/"..dirname(dest)
-			copies[#copies+1] = "cp "..src.." %{dir}/"..dest
-			outs[#outs+1] = objdir(e).."/"..dest
-		end
-
-		local deps = {}
-		for k, v in pairs(e.hdrs) do
-			deps[#deps+1] = v
-			if type(k) == "number" then
-				v = filenamesof(v)
-				for _, v in ipairs(v) do
-					if not startswith(e.cwd, v) then
-						error(string.format("filename '%s' is not local to '%s' --- "..
-							"you'll have to specify the output filename manually", v, e.cwd))
-					end
-					copy_file(v, v:gsub("^"..e.cwd, ""))
-				end
-			else
-				v = filenamesof(v)
-				if #v ~= 1 then
-					error("each mapped hdrs item can only cope with a single file")
-				end
-				copy_file(v[1], k)
-			end
-		end
-
-		ins = sorted(filenamesof(ins))
-		local has_ar = (#ins ~= 0)
-		local lib = normalrule {
-			name = e.name,
-			cwd = e.cwd,
-			ins = sorted(filenamesof(ins)),
-			deps = deps,
-			outs = outs,
-			outleaves = { e.name..".a" },
-			label = e.label,
-			commands = {
-				sorted(mkdirs),
-				sorted(copies),
-				has_ar and "rm -f %{outs[1]} && $(AR) cqs %{outs[1]} %{ins}" or {},
-			}
-		}
-		
-		lib.dep_cflags = concat(e.dep_cflags, "-I"..lib.dir)
-		lib.dep_cxxflags = e.dep_cxxflags
-		lib.dep_ldflags = e.dep_ldflags
-		lib.dep_libs = concat(e.dep_libs, has_ar and matching(filenamesof(lib), "%.a$") or {})
-		lib.dep_cxx = cxx
-
-		for _, d in pairs(targetsof(e.deps)) do
-			lib.dep_cflags = concat(lib.dep_cflags, d.dep_cflags)
-			lib.dep_cxxflags = concat(lib.dep_cxxflags, d.dep_cxxflags)
-			lib.dep_ldflags = concat(lib.dep_ldflags, d.dep_ldflags)
-			lib.dep_libs = concat(lib.dep_libs, d.dep_libs)
-			lib.dep_cxx = lib.dep_cxx or d.dep_cxx
-		end
-
-		return lib
-	end
-)
-
-definerule("cprogram",
-	{
-		srcs = { type="targets", default={} },
-		deps = { type="targets", default={} },
-	},
-	function (e)
-		local deps = e.deps
-		local ins = {}
-		local cxx = false
-
-		if (#e.srcs > 0) then
-			local objs = do_cfiles(e)
-			for _, obj in pairs(objs) do
-				if obj.is.cxxfile then
-					cxx = true
-				end
-				ins[#ins+1] = obj
-			end
-		end
-
-		local libs = {}
-		local cflags = {}
-		local cxxflags = {}
-		local ldflags = {}
-		for _, lib in pairs(e.deps) do
-			cflags = concat(cflags, lib.dep_cflags)
-			cxxflags = concat(cxxflags, lib.dep_cxxflags)
-			ldflags = concat(ldflags, lib.dep_ldflags)
-			libs = concat(libs, lib.dep_libs)
-			cxx = cxx or lib.dep_cxx
-		end
-
-		local command
-		if cxx then
-			command = "$(CXX) $(LDFLAGS) %{ldflags} -o %{outs[1]} %{ins} %{libs} %{libs}"
-		else
-			command = "$(CC) $(LDFLAGS) %{ldflags} -o %{outs[1]} %{ins} %{libs} %{libs}"
-		end
-
-		return normalrule {
-			name = e.name,
-			cwd = e.cwd,
-			deps = deps,
-			ins = ins,
-			outleaves = { e.name },
-			commands = { command },
-			vars = {
-				cflags = cflags,
-				cxxflags = cxxflags,
-				ldflags = ldflags,
-				libs = libs,
-			}
-		}
-	end
-)
-

build/c.py

@@ -0,0 +1,372 @@
+from os.path import basename, join
+from build.ab import (
+    ABException,
+    List,
+    Rule,
+    Targets,
+    TargetsMap,
+    filenameof,
+    filenamesmatchingof,
+    filenamesof,
+    flatten,
+    normalrule,
+    bubbledattrsof,
+    stripext,
+    targetswithtraitsof,
+)
+from os.path import *
+from types import SimpleNamespace
+
+
+class Toolchain:
+    label = ""
+    cfile = ["$(CC) -c -o {outs[0]} {ins[0]} $(CFLAGS) {cflags}"]
+    cxxfile = ["$(CXX) -c -o {outs[0]} {ins[0]} $(CFLAGS) {cflags}"]
+    clibrary = ["$(AR) cqs {outs[0]} {ins}"]
+    cxxlibrary = ["$(AR) cqs {outs[0]} {ins}"]
+    cprogram = ["$(CC) -o {outs[0]} {ins} {ldflags} $(LDFLAGS)"]
+    cxxprogram = ["$(CXX) -o {outs[0]} {ins} {ldflags} $(LDFLAGS)"]
+
+
+class HostToolchain:
+    label = "HOST "
+    cfile = ["$(HOSTCC) -c -o {outs[0]} {ins[0]} $(HOSTCFLAGS) {cflags}"]
+    cxxfile = ["$(HOSTCXX) -c -o {outs[0]} {ins[0]} $(HOSTCFLAGS) {cflags}"]
+    clibrary = ["$(HOSTAR) cqs {outs[0]} {ins}"]
+    cxxlibrary = ["$(HOSTAR) cqs {outs[0]} {ins}"]
+    cprogram = ["$(HOSTCC) -o {outs[0]} {ins} {ldflags} $(HOSTLDFLAGS)"]
+    cxxprogram = ["$(HOSTCXX) -o {outs[0]} {ins} {ldflags} $(HOSTLDFLAGS)"]
+
+
+def cfileimpl(self, name, srcs, deps, suffix, commands, label, kind, cflags):
+    outleaf = stripext(basename(filenameof(srcs[0]))) + suffix
+
+    normalrule(
+        replaces=self,
+        ins=srcs,
+        deps=deps,
+        outs=[outleaf],
+        label=label,
+        commands=commands,
+        cflags=cflags + bubbledattrsof(deps, "caller_cflags"),
+    )
+
+
+@Rule
+def cfile(
+    self,
+    name,
+    srcs: Targets = None,
+    deps: Targets = None,
+    cflags: List = [],
+    suffix=".o",
+    toolchain=Toolchain,
+    commands=None,
+    label=None,
+):
+    if not label:
+        label = toolchain.label + "CC"
+    if not commands:
+        commands = toolchain.cfile
+    cfileimpl(self, name, srcs, deps, suffix, commands, label, "cfile", cflags)
+
+
+@Rule
+def cxxfile(
+    self,
+    name,
+    srcs: Targets = None,
+    deps: Targets = None,
+    cflags: List = [],
+    suffix=".o",
+    toolchain=Toolchain,
+    commands=None,
+    label=None,
+):
+    if not label:
+        label = toolchain.label + "CXX"
+    if not commands:
+        commands = toolchain.cxxfile
+    cfileimpl(
+        self, name, srcs, deps, suffix, commands, label, "cxxfile", cflags
+    )
+
+
+def findsources(name, srcs, deps, cflags, toolchain, filerule):
+    objs = []
+    for s in flatten(srcs):
+        objs += [
+            filerule(
+                name=join(name, f.removeprefix("$(OBJ)/")),
+                srcs=[f],
+                deps=deps,
+                cflags=cflags,
+                toolchain=toolchain,
+            )
+            for f in filenamesof(s)
+            if f.endswith(".c")
+            or f.endswith(".cc")
+            or f.endswith(".cpp")
+            or f.endswith(".S")
+            or f.endswith(".s")
+        ]
+        if any(f.endswith(".o") for f in filenamesof(s)):
+            objs += [s]
+
+    return objs
+
+
+@Rule
+def cheaders(
+    self,
+    name,
+    hdrs: TargetsMap = None,
+    caller_cflags: List = None,
+    deps: Targets = None,
+):
+    cs = []
+    ins = list(hdrs.values())
+    outs = []
+    i = 0
+    for dest, src in hdrs.items():
+        s = filenamesof(src)
+        if len(s) != 1:
+            raise ABException(
+                "the target of a header must return exactly one file"
+            )
+
+        cs += ["cp {ins[" + str(i) + "]} {outs[" + str(i) + "]}"]
+        outs += [dest]
+        i = i + 1
+
+    r = normalrule(
+        replaces=self,
+        ins=ins,
+        outs=outs,
+        commands=cs,
+        deps=deps,
+        label="CHEADERS",
+    )
+    r.materialise()
+    self.attr.caller_cflags = caller_cflags + ["-I" + r.attr.objdir]
+    self.bubbleattr("caller_cflags", deps)
+
+
+def libraryimpl(
+    self,
+    name,
+    srcs,
+    deps,
+    hdrs,
+    caller_cflags,
+    caller_ldflags,
+    cflags,
+    ldflags,
+    toolchain,
+    commands,
+    label,
+    kind,
+):
+    hr = None
+    if hdrs and not srcs:
+        cheaders(
+            replaces=self,
+            hdrs=hdrs,
+            deps=targetswithtraitsof(deps, "cheaders"),
+            caller_cflags=caller_cflags,
+        )
+        return
+    if hdrs:
+        hr = cheaders(
+            name=self.localname + "_hdrs",
+            hdrs=hdrs,
+            deps=targetswithtraitsof(deps, "cheaders"),
+            caller_cflags=caller_cflags,
+        )
+        hr.materialise()
+        deps = deps + [hr]
+
+    objs = findsources(
+        name,
+        srcs,
+        targetswithtraitsof(deps, "cheaders"),
+        cflags + bubbledattrsof(deps, "caller_cflags"),
+        toolchain,
+        kind,
+    )
+
+    normalrule(
+        replaces=self,
+        ins=objs,
+        outs=[basename(name) + ".a"],
+        label=label,
+        commands=commands,
+    )
+    self.outs = self.outs + (hr.outs if hr else [])
+
+    self.traits.add("cheaders")
+    self.attr.caller_ldflags = caller_ldflags
+    self.bubbleattr("caller_ldflags", deps)
+    self.bubbleattr("caller_cflags", deps)
+
+
+@Rule
+def clibrary(
+    self,
+    name,
+    srcs: Targets = None,
+    deps: Targets = None,
+    hdrs: TargetsMap = None,
+    caller_cflags: List = [],
+    caller_ldflags: List = [],
+    cflags: List = [],
+    ldflags: List = [],
+    toolchain=Toolchain,
+    commands=None,
+    label=None,
+    cfilerule=cfile,
+):
+    if not label:
+        label = toolchain.label + "LIB"
+    if not commands:
+        commands = toolchain.clibrary
+    libraryimpl(
+        self,
+        name,
+        srcs,
+        deps,
+        hdrs,
+        caller_cflags,
+        caller_ldflags,
+        cflags,
+        ldflags,
+        toolchain,
+        commands,
+        label,
+        cfilerule,
+    )
+
+
+@Rule
+def cxxlibrary(
+    self,
+    name,
+    srcs: Targets = None,
+    deps: Targets = None,
+    hdrs: TargetsMap = None,
+    caller_cflags: List = [],
+    caller_ldflags: List = [],
+    cflags: List = [],
+    ldflags: List = [],
+    toolchain=Toolchain,
+    commands=None,
+    label=None,
+):
+    if not label:
+        label = toolchain.label + "LIB"
+    if not commands:
+        commands = toolchain.clibrary
+    libraryimpl(
+        self,
+        name,
+        srcs,
+        deps,
+        hdrs,
+        caller_cflags,
+        caller_ldflags,
+        cflags,
+        ldflags,
+        toolchain,
+        commands,
+        label,
+        cxxfile,
+    )
+
+
+def programimpl(
+    self,
+    name,
+    srcs,
+    deps,
+    cflags,
+    ldflags,
+    toolchain,
+    commands,
+    label,
+    filerule,
+    kind,
+):
+    ars = filenamesmatchingof(deps, "*.a")
+    deps = deps + filenamesmatchingof(srcs, "*.h")
+    ldflags = ldflags + bubbledattrsof(deps, "caller_ldflags")
+
+    cfiles = findsources(name, srcs, deps, cflags, toolchain, filerule)
+    normalrule(
+        replaces=self,
+        ins=cfiles + ars + ars,
+        outs=[basename(name) + "$(EXT)"],
+        deps=deps,
+        label=toolchain.label + label,
+        commands=commands,
+        ldflags=ldflags,
+    )
+
+
+@Rule
+def cprogram(
+    self,
+    name,
+    srcs: Targets = None,
+    deps: Targets = None,
+    cflags: List = [],
+    ldflags: List = [],
+    toolchain=Toolchain,
+    commands=None,
+    label="CLINK",
+    cfilerule=cfile,
+    cfilekind="cprogram",
+):
+    if not commands:
+        commands = toolchain.cprogram
+    programimpl(
+        self,
+        name,
+        srcs,
+        deps,
+        cflags,
+        ldflags,
+        toolchain,
+        commands,
+        label,
+        cfilerule,
+        cfilekind,
+    )
+
+
+@Rule
+def cxxprogram(
+    self,
+    name,
+    srcs: Targets = None,
+    deps: Targets = None,
+    cflags: List = [],
+    ldflags: List = [],
+    toolchain=Toolchain,
+    commands=None,
+    label="CXXLINK",
+):
+    if not commands:
+        commands = toolchain.cxxprogram
+    programimpl(
+        self,
+        name,
+        srcs,
+        deps,
+        cflags,
+        ldflags,
+        toolchain,
+        commands,
+        label,
+        cxxfile,
+        "cxxprogram",
+    )

build/pkg.py

@@ -0,0 +1,81 @@
+from build.ab import Rule, emit, Target, bubbledattrsof, filenamesof
+from types import SimpleNamespace
+import os
+import subprocess
+
+emit(
+    """
+PKG_CONFIG ?= pkg-config
+PACKAGES := $(shell $(PKG_CONFIG) --list-all | cut -d' ' -f1 | sort)
+
+HOST_PKG_CONFIG ?= pkg-config
+HOST_PACKAGES := $(shell $(HOST_PKG_CONFIG) --list-all | cut -d' ' -f1 | sort)
+"""
+)
+
+
+@Rule
+def package(self, name, package=None, fallback: Target = None):
+    emit("ifeq ($(filter %s, $(PACKAGES)),)" % package)
+    if fallback:
+        emit(f"PACKAGE_DEPS_{package} := ", filenamesof(fallback))
+        emit(
+            f"PACKAGE_CFLAGS_{package} :=",
+            bubbledattrsof(fallback, "caller_cflags"),
+        )
+        emit(
+            f"PACKAGE_LDFLAGS_{package} := ",
+            bubbledattrsof(fallback, "caller_ldflags"),
+            f"$(filter %.a, $(PACKAGE_DEPS_{package}))",
+        )
+    else:
+        emit(f"$(error Required package '{package}' not installed.)")
+    emit("else")
+    emit(
+        f"PACKAGE_CFLAGS_{package} := $(shell $(PKG_CONFIG) --cflags {package})"
+    )
+    emit(
+        f"PACKAGE_LDFLAGS_{package} := $(shell $(PKG_CONFIG) --libs {package})"
+    )
+    emit(f"PACKAGE_DEPS_{package} :=")
+    emit("endif")
+
+    self.attr.caller_cflags = [f"$(PACKAGE_CFLAGS_{package})"]
+    self.attr.caller_ldflags = [f"$(PACKAGE_LDFLAGS_{package})"]
+    self.traits.add("clibrary")
+    self.traits.add("cheaders")
+
+    self.ins = []
+    self.outs = [f"$(PACKAGE_DEPS_{package})"]
+
+
+@Rule
+def hostpackage(self, name, package=None, fallback: Target = None):
+    emit("ifeq ($(filter %s, $(HOST_PACKAGES)),)" % package)
+    if fallback:
+        emit(
+            f"HOST_PACKAGE_CFLAGS_{package} :=",
+            bubbledattrsof(fallback, "caller_cflags"),
+        )
+        emit(
+            f"HOST_PACKAGE_LDFLAGS_{package} := ",
+            bubbledattrsof(fallback, "caller_ldflags"),
+        )
+        emit(f"HOST_PACKAGE_DEP_{package} := ", fallback.name)
+    else:
+        emit(f"$(error Required host package '{package}' not installed.)")
+    emit("else")
+    emit(
+        f"HOST_PACKAGE_CFLAGS_{package} := $(shell $(HOST_PKG_CONFIG) --cflags {package})"
+    )
+    emit(
+        f"HOST_PACKAGE_LDFLAGS_{package} := $(shell $(HOST_PKG_CONFIG) --libs {package})"
+    )
+    emit(f"HOST_PACKAGE_DEP_{package} := ")
+    emit("endif")
+
+    self.attr.caller_cflags = [f"$(HOST_PACKAGE_CFLAGS_{package})"]
+    self.attr.caller_ldflags = [f"$(HOST_PACKAGE_LDFLAGS_{package})"]
+
+    self.ins = []
+    self.outs = [f"$(HOST_PACKAGE_DEP_{package})"]

build/protobuf.py

@@ -0,0 +1,73 @@
+from os.path import join
+from build.ab import (
+    Rule,
+    Targets,
+    emit,
+    normalrule,
+    filenamesof,
+    filenamesmatchingof,
+    bubbledattrsof,
+    targetswithtraitsof,
+)
+from build.c import cxxlibrary
+from types import SimpleNamespace
+from build.pkg import package
+
+emit(
+    """
+PROTOC ?= protoc
+ifeq ($(filter protobuf, $(PACKAGES)),)
+$(error Required package 'protobuf' not installed.)"
+endif
+"""
+)
+
+lib = package(name="protobuf_lib", package="protobuf")
+
+@Rule
+def proto(self, name, srcs: Targets = None, deps: Targets = None):
+    normalrule(
+        replaces=self,
+        ins=srcs,
+        outs=[f"{name}.descriptor"],
+        deps=deps,
+        commands=[
+            "$(PROTOC) --include_source_info --descriptor_set_out={outs[0]} {ins}"
+        ],
+        label="PROTO",
+    )
+    self.attr.protosrcs = filenamesof(srcs)
+    self.bubbleattr("protosrcs", deps)
+
+
+@Rule
+def protocc(self, name, srcs: Targets = None, deps: Targets = None):
+    outs = []
+    protos = []
+
+    for f in filenamesmatchingof(bubbledattrsof(srcs, "protosrcs"), "*.proto"):
+        cc = f.replace(".proto", ".pb.cc")
+        h = f.replace(".proto", ".pb.h")
+        protos += [f]
+        srcs += [f]
+        outs += [cc, h]
+
+    srcname = f"{name}_srcs"
+    objdir = join("$(OBJ)", srcname)
+    r = normalrule(
+        name=srcname,
+        ins=protos,
+        outs=outs,
+        deps=deps,
+        commands=["$(PROTOC) --cpp_out={self.attr.objdir} {ins}"],
+        label="PROTOCC",
+    )
+
+    headers = {f: join(objdir, f) for f in outs if f.endswith(".pb.h")}
+
+    cxxlibrary(
+        replaces=self,
+        srcs=[r],
+        deps=targetswithtraitsof(deps, "cheaders") + [lib],
+        hdrs=headers,
+    )

build/tests.lua

@@ -1,18 +0,0 @@
-definerule("test",
-	{
-		srcs = { type="targets", default={} },
-	},
-	function (e)
-		if vars.TESTS == "yes" then
-			normalrule {
-				name = e.name,
-				ins = e.srcs,
-				outleaves = { "log.txt" },
-				commands = {
-					"%{ins} > %{outs}",
-				}
-			}
-		end
-	end
-)
-

build/utils.py

@@ -0,0 +1,43 @@
+from build.ab import Rule, normalrule, Target, filenameof, Targets
+from os.path import basename
+
+
+@Rule
+def objectify(self, name, src: Target, symbol):
+    normalrule(
+        replaces=self,
+        ins=["build/_objectify.py", src],
+        outs=[basename(filenameof(src)) + ".h"],
+        commands=["$(PYTHON) {ins[0]} {ins[1]} " + symbol + " > {outs}"],
+        label="OBJECTIFY",
+    )
+
+
+@Rule
+def test(
+    self,
+    name,
+    command: Target = None,
+    commands=None,
+    ins: Targets = None,
+    deps: Targets = None,
+    label="TEST",
+):
+    if command:
+        normalrule(
+            replaces=self,
+            ins=[command],
+            outs=["sentinel"],
+            commands=["{ins[0]}", "touch {outs}"],
+            deps=deps,
+            label=label,
+        )
+    else:
+        normalrule(
+            replaces=self,
+            ins=ins,
+            outs=["sentinel"],
+            commands=commands + ["touch {outs}"],
+            deps=deps,
+            label=label,
+        )

config.py

@@ -0,0 +1,11 @@
+import platform
+import os
+
+if os.getenv("BUILDTYPE") == "windows":
+    windows = True
+    osx = False
+    unix = False
+else:
+    windows = False
+    osx = platform.system() == "Darwin"
+    unix = True

dep/adflib/build.mk

@@ -1,22 +0,0 @@
-ADFLIB_SRCS = \
-	dep/adflib/src/adf_bitm.c \
-	dep/adflib/src/adf_cache.c \
-	dep/adflib/src/adf_dir.c \
-	dep/adflib/src/adf_disk.c \
-	dep/adflib/src/adf_dump.c \
-	dep/adflib/src/adf_env.c \
-	dep/adflib/src/adf_file.c \
-	dep/adflib/src/adf_hd.c \
-	dep/adflib/src/adf_link.c \
-	dep/adflib/src/adf_raw.c \
-	dep/adflib/src/adf_salv.c \
-	dep/adflib/src/adf_util.c \
-
-ADFLIB_OBJS = $(patsubst %.c, $(OBJDIR)/%.o, $(ADFLIB_SRCS))
-$(ADFLIB_OBJS): CFLAGS += -Idep/adflib/src -Idep/adflib
-ADFLIB_LIB = $(OBJDIR)/libadflib.a
-$(ADFLIB_LIB): $(ADFLIB_OBJS)
-ADFLIB_CFLAGS = -Idep/adflib/src
-ADFLIB_LDFLAGS =
-OBJS += $(ADFLIB_OBJS)
-

dep/adflib/build.py

@@ -0,0 +1,47 @@
+from build.c import clibrary
+
+clibrary(
+    name="adflib",
+    srcs=[
+        "./src/adf_bitm.c",
+        "./src/adf_bitm.h",
+        "./src/adf_cache.c",
+        "./src/adf_cache.h",
+        "./src/adf_dir.c",
+        "./src/adf_dir.h",
+        "./src/adf_disk.c",
+        "./src/adf_disk.h",
+        "./src/adf_dump.c",
+        "./src/adf_dump.h",
+        "./src/adf_env.c",
+        "./src/adf_env.h",
+        "./src/adf_file.c",
+        "./src/adf_file.h",
+        "./src/adf_hd.c",
+        "./src/adf_hd.h",
+        "./src/adf_link.c",
+        "./src/adf_link.h",
+        "./src/adf_raw.c",
+        "./src/adf_raw.h",
+        "./src/adf_salv.c",
+        "./src/adf_salv.h",
+        "./src/adf_str.h",
+        "./src/adf_util.c",
+        "./src/adf_util.h",
+        "./src/defendian.h",
+        "./src/hd_blk.h",
+        "./src/prefix.h",
+        "./adf_nativ.h",
+        "./config.h",
+        "./src/adflib.h",
+    ],
+    cflags=["-Idep/adflib", "-Idep/adflib/src"],
+    hdrs={
+        "adf_blk.h": "./src/adf_blk.h",
+        "adf_defs.h": "./src/adf_defs.h",
+        "adf_err.h": "./src/adf_err.h",
+        "adf_nativ.h": "./adf_nativ.h",
+        "adf_str.h": "./src/adf_str.h",
+        "adflib.h": "./src/adflib.h",
+    },
+)

dep/agg/build.mk

@@ -1,38 +0,0 @@
-AGG_SRCS = \
-	dep/agg/src/agg_arrowhead.cpp \
-	dep/agg/src/agg_line_aa_basics.cpp \
-	dep/agg/src/agg_vcgen_bspline.cpp \
-	dep/agg/src/agg_vpgen_segmentator.cpp \
-	dep/agg/src/agg_color_rgba.cpp \
-	dep/agg/src/agg_sqrt_tables.cpp \
-	dep/agg/src/agg_bspline.cpp \
-	dep/agg/src/agg_curves.cpp \
-	dep/agg/src/agg_rounded_rect.cpp \
-	dep/agg/src/agg_vcgen_markers_term.cpp \
-	dep/agg/src/agg_vcgen_dash.cpp \
-	dep/agg/src/agg2d.cpp \
-	dep/agg/src/agg_trans_affine.cpp \
-	dep/agg/src/agg_gsv_text.cpp \
-	dep/agg/src/agg_vcgen_smooth_poly1.cpp \
-	dep/agg/src/agg_trans_single_path.cpp \
-	dep/agg/src/agg_vpgen_clip_polygon.cpp \
-	dep/agg/src/agg_embedded_raster_fonts.cpp \
-	dep/agg/src/agg_trans_double_path.cpp \
-	dep/agg/src/agg_vcgen_stroke.cpp \
-	dep/agg/src/agg_arc.cpp \
-	dep/agg/src/agg_image_filters.cpp \
-	dep/agg/src/agg_trans_warp_magnifier.cpp \
-	dep/agg/src/agg_vpgen_clip_polyline.cpp \
-	dep/agg/src/agg_bezier_arc.cpp \
-	dep/agg/src/agg_line_profile_aa.cpp \
-	dep/agg/src/agg_vcgen_contour.cpp \
-	
-AGG_OBJS = $(patsubst %.cpp, $(OBJDIR)/%.o, $(AGG_SRCS))
-AGG_LIB = $(OBJDIR)/libagg.a
-$(AGG_LIB): $(AGG_OBJS)
-AGG_LDFLAGS = $(AGG_LIB)
-AGG_CFLAGS = -Idep/agg/include
-OBJS += $(AGG_OBJS)
-
-$(AGG_OBJS): CFLAGS += $(AGG_CFLAGS)
-

dep/agg/build.py

@@ -0,0 +1,164 @@
+from build.c import cxxlibrary
+
+cxxlibrary(
+    name="agg",
+    srcs=[
+        "./src/agg_arrowhead.cpp",
+        "./src/agg_line_aa_basics.cpp",
+        "./src/agg_vcgen_bspline.cpp",
+        "./src/agg_vpgen_segmentator.cpp",
+        "./src/agg_color_rgba.cpp",
+        "./src/agg_sqrt_tables.cpp",
+        "./src/agg_bspline.cpp",
+        "./src/agg_curves.cpp",
+        "./src/agg_rounded_rect.cpp",
+        "./src/agg_vcgen_markers_term.cpp",
+        "./src/agg_vcgen_dash.cpp",
+        "./src/agg2d.cpp",
+        "./src/agg_trans_affine.cpp",
+        "./src/agg_gsv_text.cpp",
+        "./src/agg_vcgen_smooth_poly1.cpp",
+        "./src/agg_trans_single_path.cpp",
+        "./src/agg_vpgen_clip_polygon.cpp",
+        "./src/agg_embedded_raster_fonts.cpp",
+        "./src/agg_trans_double_path.cpp",
+        "./src/agg_vcgen_stroke.cpp",
+        "./src/agg_arc.cpp",
+        "./src/agg_image_filters.cpp",
+        "./src/agg_trans_warp_magnifier.cpp",
+        "./src/agg_vpgen_clip_polyline.cpp",
+        "./src/agg_bezier_arc.cpp",
+        "./src/agg_line_profile_aa.cpp",
+        "./src/agg_vcgen_contour.cpp",
+    ],
+    hdrs={
+        "agg2d.h": "./include/agg2d.h",
+        "agg_alpha_mask_u8.h": "./include/agg_alpha_mask_u8.h",
+        "agg_arc.h": "./include/agg_arc.h",
+        "agg_array.h": "./include/agg_array.h",
+        "agg_arrowhead.h": "./include/agg_arrowhead.h",
+        "agg_basics.h": "./include/agg_basics.h",
+        "agg_bezier_arc.h": "./include/agg_bezier_arc.h",
+        "agg_bitset_iterator.h": "./include/agg_bitset_iterator.h",
+        "agg_blur.h": "./include/agg_blur.h",
+        "agg_bounding_rect.h": "./include/agg_bounding_rect.h",
+        "agg_bspline.h": "./include/agg_bspline.h",
+        "agg_clip_liang_barsky.h": "./include/agg_clip_liang_barsky.h",
+        "agg_color_gray.h": "./include/agg_color_gray.h",
+        "agg_color_rgba.h": "./include/agg_color_rgba.h",
+        "agg_config.h": "./include/agg_config.h",
+        "agg_conv_adaptor_vcgen.h": "./include/agg_conv_adaptor_vcgen.h",
+        "agg_conv_adaptor_vpgen.h": "./include/agg_conv_adaptor_vpgen.h",
+        "agg_conv_bspline.h": "./include/agg_conv_bspline.h",
+        "agg_conv_clip_polygon.h": "./include/agg_conv_clip_polygon.h",
+        "agg_conv_clip_polyline.h": "./include/agg_conv_clip_polyline.h",
+        "agg_conv_close_polygon.h": "./include/agg_conv_close_polygon.h",
+        "agg_conv_concat.h": "./include/agg_conv_concat.h",
+        "agg_conv_contour.h": "./include/agg_conv_contour.h",
+        "agg_conv_curve.h": "./include/agg_conv_curve.h",
+        "agg_conv_dash.h": "./include/agg_conv_dash.h",
+        "agg_conv_gpc.h": "./include/agg_conv_gpc.h",
+        "agg_conv_marker_adaptor.h": "./include/agg_conv_marker_adaptor.h",
+        "agg_conv_marker.h": "./include/agg_conv_marker.h",
+        "agg_conv_segmentator.h": "./include/agg_conv_segmentator.h",
+        "agg_conv_shorten_path.h": "./include/agg_conv_shorten_path.h",
+        "agg_conv_smooth_poly1.h": "./include/agg_conv_smooth_poly1.h",
+        "agg_conv_stroke.h": "./include/agg_conv_stroke.h",
+        "agg_conv_transform.h": "./include/agg_conv_transform.h",
+        "agg_conv_unclose_polygon.h": "./include/agg_conv_unclose_polygon.h",
+        "agg_curves.h": "./include/agg_curves.h",
+        "agg_dda_line.h": "./include/agg_dda_line.h",
+        "agg_ellipse_bresenham.h": "./include/agg_ellipse_bresenham.h",
+        "agg_ellipse.h": "./include/agg_ellipse.h",
+        "agg_embedded_raster_fonts.h": "./include/agg_embedded_raster_fonts.h",
+        "agg_font_cache_manager2.h": "./include/agg_font_cache_manager2.h",
+        "agg_font_cache_manager.h": "./include/agg_font_cache_manager.h",
+        "agg_gamma_functions.h": "./include/agg_gamma_functions.h",
+        "agg_gamma_lut.h": "./include/agg_gamma_lut.h",
+        "agg_glyph_raster_bin.h": "./include/agg_glyph_raster_bin.h",
+        "agg_gradient_lut.h": "./include/agg_gradient_lut.h",
+        "agg_gsv_text.h": "./include/agg_gsv_text.h",
+        "agg_image_accessors.h": "./include/agg_image_accessors.h",
+        "agg_image_filters.h": "./include/agg_image_filters.h",
+        "agg_line_aa_basics.h": "./include/agg_line_aa_basics.h",
+        "agg_math.h": "./include/agg_math.h",
+        "agg_math_stroke.h": "./include/agg_math_stroke.h",
+        "agg_path_length.h": "./include/agg_path_length.h",
+        "agg_path_storage.h": "./include/agg_path_storage.h",
+        "agg_path_storage_integer.h": "./include/agg_path_storage_integer.h",
+        "agg_pattern_filters_rgba.h": "./include/agg_pattern_filters_rgba.h",
+        "agg_pixfmt_amask_adaptor.h": "./include/agg_pixfmt_amask_adaptor.h",
+        "agg_pixfmt_base.h": "./include/agg_pixfmt_base.h",
+        "agg_pixfmt_gray.h": "./include/agg_pixfmt_gray.h",
+        "agg_pixfmt_rgba.h": "./include/agg_pixfmt_rgba.h",
+        "agg_pixfmt_rgb.h": "./include/agg_pixfmt_rgb.h",
+        "agg_pixfmt_rgb_packed.h": "./include/agg_pixfmt_rgb_packed.h",
+        "agg_pixfmt_transposer.h": "./include/agg_pixfmt_transposer.h",
+        "agg_rasterizer_cells_aa.h": "./include/agg_rasterizer_cells_aa.h",
+        "agg_rasterizer_compound_aa.h": "./include/agg_rasterizer_compound_aa.h",
+        "agg_rasterizer_outline_aa.h": "./include/agg_rasterizer_outline_aa.h",
+        "agg_rasterizer_outline.h": "./include/agg_rasterizer_outline.h",
+        "agg_rasterizer_scanline_aa.h": "./include/agg_rasterizer_scanline_aa.h",
+        "agg_rasterizer_scanline_aa_nogamma.h": "./include/agg_rasterizer_scanline_aa_nogamma.h",
+        "agg_rasterizer_sl_clip.h": "./include/agg_rasterizer_sl_clip.h",
+        "agg_renderer_base.h": "./include/agg_renderer_base.h",
+        "agg_renderer_markers.h": "./include/agg_renderer_markers.h",
+        "agg_renderer_mclip.h": "./include/agg_renderer_mclip.h",
+        "agg_renderer_outline_aa.h": "./include/agg_renderer_outline_aa.h",
+        "agg_renderer_outline_image.h": "./include/agg_renderer_outline_image.h",
+        "agg_renderer_primitives.h": "./include/agg_renderer_primitives.h",
+        "agg_renderer_raster_text.h": "./include/agg_renderer_raster_text.h",
+        "agg_renderer_scanline.h": "./include/agg_renderer_scanline.h",
+        "agg_rendering_buffer_dynarow.h": "./include/agg_rendering_buffer_dynarow.h",
+        "agg_rendering_buffer.h": "./include/agg_rendering_buffer.h",
+        "agg_rounded_rect.h": "./include/agg_rounded_rect.h",
+        "agg_scanline_bin.h": "./include/agg_scanline_bin.h",
+        "agg_scanline_boolean_algebra.h": "./include/agg_scanline_boolean_algebra.h",
+        "agg_scanline_p.h": "./include/agg_scanline_p.h",
+        "agg_scanline_storage_aa.h": "./include/agg_scanline_storage_aa.h",
+        "agg_scanline_storage_bin.h": "./include/agg_scanline_storage_bin.h",
+        "agg_scanline_u.h": "./include/agg_scanline_u.h",
+        "agg_shorten_path.h": "./include/agg_shorten_path.h",
+        "agg_simul_eq.h": "./include/agg_simul_eq.h",
+        "agg_span_allocator.h": "./include/agg_span_allocator.h",
+        "agg_span_converter.h": "./include/agg_span_converter.h",
+        "agg_span_gouraud_gray.h": "./include/agg_span_gouraud_gray.h",
+        "agg_span_gouraud.h": "./include/agg_span_gouraud.h",
+        "agg_span_gouraud_rgba.h": "./include/agg_span_gouraud_rgba.h",
+        "agg_span_gradient_alpha.h": "./include/agg_span_gradient_alpha.h",
+        "agg_span_gradient_contour.h": "./include/agg_span_gradient_contour.h",
+        "agg_span_gradient.h": "./include/agg_span_gradient.h",
+        "agg_span_gradient_image.h": "./include/agg_span_gradient_image.h",
+        "agg_span_image_filter_gray.h": "./include/agg_span_image_filter_gray.h",
+        "agg_span_image_filter.h": "./include/agg_span_image_filter.h",
+        "agg_span_image_filter_rgba.h": "./include/agg_span_image_filter_rgba.h",
+        "agg_span_image_filter_rgb.h": "./include/agg_span_image_filter_rgb.h",
+        "agg_span_interpolator_adaptor.h": "./include/agg_span_interpolator_adaptor.h",
+        "agg_span_interpolator_linear.h": "./include/agg_span_interpolator_linear.h",
+        "agg_span_interpolator_persp.h": "./include/agg_span_interpolator_persp.h",
+        "agg_span_interpolator_trans.h": "./include/agg_span_interpolator_trans.h",
+        "agg_span_pattern_gray.h": "./include/agg_span_pattern_gray.h",
+        "agg_span_pattern_rgba.h": "./include/agg_span_pattern_rgba.h",
+        "agg_span_pattern_rgb.h": "./include/agg_span_pattern_rgb.h",
+        "agg_span_solid.h": "./include/agg_span_solid.h",
+        "agg_span_subdiv_adaptor.h": "./include/agg_span_subdiv_adaptor.h",
+        "agg_trans_affine.h": "./include/agg_trans_affine.h",
+        "agg_trans_bilinear.h": "./include/agg_trans_bilinear.h",
+        "agg_trans_double_path.h": "./include/agg_trans_double_path.h",
+        "agg_trans_perspective.h": "./include/agg_trans_perspective.h",
+        "agg_trans_single_path.h": "./include/agg_trans_single_path.h",
+        "agg_trans_viewport.h": "./include/agg_trans_viewport.h",
+        "agg_trans_warp_magnifier.h": "./include/agg_trans_warp_magnifier.h",
+        "agg_vcgen_bspline.h": "./include/agg_vcgen_bspline.h",
+        "agg_vcgen_contour.h": "./include/agg_vcgen_contour.h",
+        "agg_vcgen_dash.h": "./include/agg_vcgen_dash.h",
+        "agg_vcgen_markers_term.h": "./include/agg_vcgen_markers_term.h",
+        "agg_vcgen_smooth_poly1.h": "./include/agg_vcgen_smooth_poly1.h",
+        "agg_vcgen_stroke.h": "./include/agg_vcgen_stroke.h",
+        "agg_vcgen_vertex_sequence.h": "./include/agg_vcgen_vertex_sequence.h",
+        "agg_vertex_sequence.h": "./include/agg_vertex_sequence.h",
+        "agg_vpgen_clip_polygon.h": "./include/agg_vpgen_clip_polygon.h",
+        "agg_vpgen_clip_polyline.h": "./include/agg_vpgen_clip_polyline.h",
+        "agg_vpgen_segmentator.h": "./include/agg_vpgen_segmentator.h",
+    },
+)

dep/emu/build.mk

@@ -1,21 +0,0 @@
-ifeq ($(OS), Windows_NT)
-
-EMU_SRCS = \
-	dep/emu/fnmatch.c
-
-EMU_OBJS = $(patsubst %.c, $(OBJDIR)/%.o, $(EMU_SRCS))
-$(EMU_OBJS): CFLAGS += -Idep/emu
-EMU_LIB = $(OBJDIR)/libemu.a
-$(EMU_LIB): $(EMU_OBJS)
-EMU_CFLAGS = -Idep/emu
-EMU_LDFLAGS = $(EMU_LIB)
-OBJS += $(EMU_OBJS)
-
-else
-
-EMU_LIB =
-EMU_CFLAGS =
-EMU_LDFLAGS =
-
-endif
-

dep/emu/build.py

@@ -0,0 +1,3 @@
+from build.c import clibrary
+
+clibrary(name="emu", srcs=["./fnmatch.c"], hdrs={"fnmatch.h": "./fnmatch.h"})

dep/fatfs/build.mk

@@ -1,13 +0,0 @@
-FATFS_SRCS = \
-	dep/fatfs/source/ff.c \
-	dep/fatfs/source/ffsystem.c \
-	dep/fatfs/source/ffunicode.c \
-	
-FATFS_OBJS = $(patsubst %.c, $(OBJDIR)/%.o, $(FATFS_SRCS))
-$(FATFS_OBJS): CFLAGS += -Idep/fatfs/source
-FATFS_LIB = $(OBJDIR)/libfatfs.a
-$(FATFS_LIB): $(FATFS_OBJS)
-FATFS_CFLAGS = -Idep/fatfs/source
-FATFS_LDFLAGS = 
-OBJS += $(FATFS_OBJS)
-

dep/fatfs/build.py

@@ -0,0 +1,18 @@
+from build.c import clibrary
+
+clibrary(
+    name="fatfs",
+    srcs=[
+        "./source/ff.c",
+        "./source/ffsystem.c",
+        "./source/ffunicode.c",
+        "./source/ff.h",
+        "./source/ffconf.h",
+        "./source/diskio.h",
+    ],
+    hdrs={
+        "ff.h": "./source/ff.h",
+        "ffconf.h": "./source/ffconf.h",
+        "diskio.h": "./source/diskio.h",
+    },
+)

dep/fmt/.clang-format

@@ -0,0 +1,8 @@
+# Run manually to reformat a file:
+# clang-format -i --style=file <file>
+Language: Cpp
+BasedOnStyle: Google
+IndentPPDirectives: AfterHash
+IndentCaseLabels: false
+AlwaysBreakTemplateDeclarations: false
+DerivePointerAlignment: false

dep/fmt/CMakeLists.txt

@@ -0,0 +1,453 @@
+cmake_minimum_required(VERSION 3.8...3.26)
+
+# Fallback for using newer policies on CMake <3.12.
+if (${CMAKE_VERSION} VERSION_LESS 3.12)
+  cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
+endif ()
+
+# Determine if fmt is built as a subproject (using add_subdirectory)
+# or if it is the master project.
+if (NOT DEFINED FMT_MASTER_PROJECT)
+  set(FMT_MASTER_PROJECT OFF)
+  if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    set(FMT_MASTER_PROJECT ON)
+    message(STATUS "CMake version: ${CMAKE_VERSION}")
+  endif ()
+endif ()
+
+# Joins arguments and places the results in ${result_var}.
+function(join result_var)
+  set(result "")
+  foreach (arg ${ARGN})
+    set(result "${result}${arg}")
+  endforeach ()
+  set(${result_var} "${result}" PARENT_SCOPE)
+endfunction()
+
+# DEPRECATED! Should be merged into add_module_library.
+function(enable_module target)
+  if (MSVC)
+    set(BMI ${CMAKE_CURRENT_BINARY_DIR}/${target}.ifc)
+    target_compile_options(${target}
+      PRIVATE /interface /ifcOutput ${BMI}
+      INTERFACE /reference fmt=${BMI})
+    set_target_properties(${target} PROPERTIES ADDITIONAL_CLEAN_FILES ${BMI})
+    set_source_files_properties(${BMI} PROPERTIES GENERATED ON)
+  endif ()
+endfunction()
+
+# Adds a library compiled with C++20 module support.
+# `enabled` is a CMake variables that specifies if modules are enabled.
+# If modules are disabled `add_module_library` falls back to creating a
+# non-modular library.
+#
+# Usage:
+#   add_module_library(<name> [sources...] FALLBACK [sources...] [IF enabled])
+function(add_module_library name)
+  cmake_parse_arguments(AML "" "IF" "FALLBACK" ${ARGN})
+  set(sources ${AML_UNPARSED_ARGUMENTS})
+
+  add_library(${name})
+  set_target_properties(${name} PROPERTIES LINKER_LANGUAGE CXX)
+
+  if (NOT ${${AML_IF}})
+    # Create a non-modular library.
+    target_sources(${name} PRIVATE ${AML_FALLBACK})
+    return()
+  endif ()
+
+  # Modules require C++20.
+  target_compile_features(${name} PUBLIC cxx_std_20)
+  if (CMAKE_COMPILER_IS_GNUCXX)
+    target_compile_options(${name} PUBLIC -fmodules-ts)
+  endif ()
+
+  # `std` is affected by CMake options and may be higher than C++20.
+  get_target_property(std ${name} CXX_STANDARD)
+
+  if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    set(pcms)
+    foreach (src ${sources})
+      get_filename_component(pcm ${src} NAME_WE)
+      set(pcm ${pcm}.pcm)
+
+      # Propagate -fmodule-file=*.pcm to targets that link with this library.
+      target_compile_options(
+        ${name} PUBLIC -fmodule-file=${CMAKE_CURRENT_BINARY_DIR}/${pcm})
+
+      # Use an absolute path to prevent target_link_libraries prepending -l
+      # to it.
+      set(pcms ${pcms} ${CMAKE_CURRENT_BINARY_DIR}/${pcm})
+      add_custom_command(
+        OUTPUT ${pcm}
+        COMMAND ${CMAKE_CXX_COMPILER}
+                -std=c++${std} -x c++-module --precompile -c
+                -o ${pcm} ${CMAKE_CURRENT_SOURCE_DIR}/${src}
+                "-I$<JOIN:$<TARGET_PROPERTY:${name},INCLUDE_DIRECTORIES>,;-I>"
+        # Required by the -I generator expression above.
+        COMMAND_EXPAND_LISTS
+        DEPENDS ${src})
+    endforeach ()
+
+    # Add .pcm files as sources to make sure they are built before the library.
+    set(sources)
+    foreach (pcm ${pcms})
+      get_filename_component(pcm_we ${pcm} NAME_WE)
+      set(obj ${pcm_we}.o)
+      # Use an absolute path to prevent target_link_libraries prepending -l.
+      set(sources ${sources} ${pcm} ${CMAKE_CURRENT_BINARY_DIR}/${obj})
+      add_custom_command(
+        OUTPUT ${obj}
+        COMMAND ${CMAKE_CXX_COMPILER} $<TARGET_PROPERTY:${name},COMPILE_OPTIONS>
+                -c -o ${obj} ${pcm}
+        DEPENDS ${pcm})
+    endforeach ()
+  endif ()
+  target_sources(${name} PRIVATE ${sources})
+endfunction()
+
+include(CMakeParseArguments)
+
+# Sets a cache variable with a docstring joined from multiple arguments:
+#   set(<variable> <value>... CACHE <type> <docstring>...)
+# This allows splitting a long docstring for readability.
+function(set_verbose)
+  # cmake_parse_arguments is broken in CMake 3.4 (cannot parse CACHE) so use
+  # list instead.
+  list(GET ARGN 0 var)
+  list(REMOVE_AT ARGN 0)
+  list(GET ARGN 0 val)
+  list(REMOVE_AT ARGN 0)
+  list(REMOVE_AT ARGN 0)
+  list(GET ARGN 0 type)
+  list(REMOVE_AT ARGN 0)
+  join(doc ${ARGN})
+  set(${var} ${val} CACHE ${type} ${doc})
+endfunction()
+
+# Set the default CMAKE_BUILD_TYPE to Release.
+# This should be done before the project command since the latter can set
+# CMAKE_BUILD_TYPE itself (it does so for nmake).
+if (FMT_MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE)
+  set_verbose(CMAKE_BUILD_TYPE Release CACHE STRING
+              "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or "
+              "CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
+endif ()
+
+project(FMT CXX)
+include(GNUInstallDirs)
+set_verbose(FMT_INC_DIR ${CMAKE_INSTALL_INCLUDEDIR} CACHE STRING
+            "Installation directory for include files, a relative path that "
+            "will be joined with ${CMAKE_INSTALL_PREFIX} or an absolute path.")
+
+option(FMT_PEDANTIC "Enable extra warnings and expensive tests." OFF)
+option(FMT_WERROR "Halt the compilation with an error on compiler warnings."
+       OFF)
+
+# Options that control generation of various targets.
+option(FMT_DOC "Generate the doc target." ${FMT_MASTER_PROJECT})
+option(FMT_INSTALL "Generate the install target." ON)
+option(FMT_TEST "Generate the test target." ${FMT_MASTER_PROJECT})
+option(FMT_FUZZ "Generate the fuzz target." OFF)
+option(FMT_CUDA_TEST "Generate the cuda-test target." OFF)
+option(FMT_OS "Include core requiring OS (Windows/Posix) " ON)
+option(FMT_MODULE "Build a module instead of a traditional library." OFF)
+option(FMT_SYSTEM_HEADERS "Expose headers with marking them as system." OFF)
+
+if (FMT_TEST AND FMT_MODULE)
+  # The tests require {fmt} to be compiled as traditional library
+  message(STATUS "Testing is incompatible with build mode 'module'.")
+endif ()
+set(FMT_SYSTEM_HEADERS_ATTRIBUTE "")
+if (FMT_SYSTEM_HEADERS)
+  set(FMT_SYSTEM_HEADERS_ATTRIBUTE SYSTEM)
+endif ()
+if (CMAKE_SYSTEM_NAME STREQUAL "MSDOS")
+  set(FMT_TEST OFF)
+  message(STATUS "MSDOS is incompatible with gtest")
+endif ()
+
+# Get version from core.h
+file(READ include/fmt/core.h core_h)
+if (NOT core_h MATCHES "FMT_VERSION ([0-9]+)([0-9][0-9])([0-9][0-9])")
+  message(FATAL_ERROR "Cannot get FMT_VERSION from core.h.")
+endif ()
+# Use math to skip leading zeros if any.
+math(EXPR CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
+math(EXPR CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
+math(EXPR CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
+join(FMT_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.
+                 ${CPACK_PACKAGE_VERSION_PATCH})
+message(STATUS "Version: ${FMT_VERSION}")
+
+message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
+
+if (NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
+  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
+endif ()
+
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
+  "${CMAKE_CURRENT_SOURCE_DIR}/support/cmake")
+
+include(CheckCXXCompilerFlag)
+include(JoinPaths)
+
+if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_CXX_VISIBILITY_PRESET)
+  set_verbose(CMAKE_CXX_VISIBILITY_PRESET hidden CACHE STRING
+              "Preset for the export of private symbols")
+  set_property(CACHE CMAKE_CXX_VISIBILITY_PRESET PROPERTY STRINGS
+               hidden default)
+endif ()
+
+if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_VISIBILITY_INLINES_HIDDEN)
+  set_verbose(CMAKE_VISIBILITY_INLINES_HIDDEN ON CACHE BOOL
+              "Whether to add a compile flag to hide symbols of inline functions")
+endif ()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+  set(PEDANTIC_COMPILE_FLAGS -pedantic-errors -Wall -Wextra -pedantic
+      -Wold-style-cast -Wundef
+      -Wredundant-decls -Wwrite-strings -Wpointer-arith
+      -Wcast-qual -Wformat=2 -Wmissing-include-dirs
+      -Wcast-align
+      -Wctor-dtor-privacy -Wdisabled-optimization
+      -Winvalid-pch -Woverloaded-virtual
+      -Wconversion -Wundef
+      -Wno-ctor-dtor-privacy -Wno-format-nonliteral)
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS}
+         -Wno-dangling-else -Wno-unused-local-typedefs)
+  endif ()
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wdouble-promotion
+          -Wtrampolines -Wzero-as-null-pointer-constant -Wuseless-cast
+          -Wvector-operation-performance -Wsized-deallocation -Wshadow)
+  endif ()
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wshift-overflow=2
+          -Wnull-dereference -Wduplicated-cond)
+  endif ()
+  set(WERROR_FLAG -Werror)
+endif ()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+  set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -pedantic -Wconversion -Wundef
+      -Wdeprecated -Wweak-vtables -Wshadow
+      -Wno-gnu-zero-variadic-macro-arguments)
+  check_cxx_compiler_flag(-Wzero-as-null-pointer-constant HAS_NULLPTR_WARNING)
+  if (HAS_NULLPTR_WARNING)
+    set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS}
+        -Wzero-as-null-pointer-constant)
+  endif ()
+  set(WERROR_FLAG -Werror)
+endif ()
+
+if (MSVC)
+  set(PEDANTIC_COMPILE_FLAGS /W3)
+  set(WERROR_FLAG /WX)
+endif ()
+
+if (FMT_MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio")
+  # If Microsoft SDK is installed create script run-msbuild.bat that
+  # calls SetEnv.cmd to set up build environment and runs msbuild.
+  # It is useful when building Visual Studio projects with the SDK
+  # toolchain rather than Visual Studio.
+  include(FindSetEnv)
+  if (WINSDK_SETENV)
+    set(MSBUILD_SETUP "call \"${WINSDK_SETENV}\"")
+  endif ()
+  # Set FrameworkPathOverride to get rid of MSB3644 warnings.
+  join(netfxpath
+       "C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\"
+       ".NETFramework\\v4.0")
+  file(WRITE run-msbuild.bat "
+    ${MSBUILD_SETUP}
+    ${CMAKE_MAKE_PROGRAM} -p:FrameworkPathOverride=\"${netfxpath}\" %*")
+endif ()
+
+function(add_headers VAR)
+  set(headers ${${VAR}})
+  foreach (header ${ARGN})
+    set(headers ${headers} include/fmt/${header})
+  endforeach()
+  set(${VAR} ${headers} PARENT_SCOPE)
+endfunction()
+
+# Define the fmt library, its includes and the needed defines.
+add_headers(FMT_HEADERS args.h chrono.h color.h compile.h core.h format.h
+                        format-inl.h os.h ostream.h printf.h ranges.h std.h
+                        xchar.h)
+set(FMT_SOURCES src/format.cc)
+if (FMT_OS)
+  set(FMT_SOURCES ${FMT_SOURCES} src/os.cc)
+endif ()
+
+add_module_library(fmt src/fmt.cc FALLBACK
+                   ${FMT_SOURCES} ${FMT_HEADERS} README.md ChangeLog.md
+                   IF FMT_MODULE)
+add_library(fmt::fmt ALIAS fmt)
+if (FMT_MODULE)
+  enable_module(fmt)
+endif ()
+
+if (FMT_WERROR)
+  target_compile_options(fmt PRIVATE ${WERROR_FLAG})
+endif ()
+if (FMT_PEDANTIC)
+  target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS})
+endif ()
+
+if (cxx_std_11 IN_LIST CMAKE_CXX_COMPILE_FEATURES)
+  target_compile_features(fmt PUBLIC cxx_std_11)
+else ()
+  message(WARNING "Feature cxx_std_11 is unknown for the CXX compiler")
+endif ()
+
+target_include_directories(fmt ${FMT_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC
+  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:${FMT_INC_DIR}>)
+
+set(FMT_DEBUG_POSTFIX d CACHE STRING "Debug library postfix.")
+
+set_target_properties(fmt PROPERTIES
+  VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR}
+  PUBLIC_HEADER "${FMT_HEADERS}"
+  DEBUG_POSTFIX "${FMT_DEBUG_POSTFIX}"
+
+  # Workaround for Visual Studio 2017:
+  # Ensure the .pdb is created with the same name and in the same directory
+  # as the .lib. Newer VS versions already do this by default, but there is no
+  # harm in setting it for those too. Ignored by other generators.
+  COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}"
+  COMPILE_PDB_NAME "fmt"
+  COMPILE_PDB_NAME_DEBUG "fmt${FMT_DEBUG_POSTFIX}")
+
+# Set FMT_LIB_NAME for pkg-config fmt.pc. We cannot use the OUTPUT_NAME target
+# property because it's not set by default.
+set(FMT_LIB_NAME fmt)
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+  set(FMT_LIB_NAME ${FMT_LIB_NAME}${FMT_DEBUG_POSTFIX})
+endif ()
+
+if (BUILD_SHARED_LIBS)
+  target_compile_definitions(fmt PRIVATE FMT_LIB_EXPORT INTERFACE FMT_SHARED)
+endif ()
+if (FMT_SAFE_DURATION_CAST)
+  target_compile_definitions(fmt PUBLIC FMT_SAFE_DURATION_CAST)
+endif ()
+
+add_library(fmt-header-only INTERFACE)
+add_library(fmt::fmt-header-only ALIAS fmt-header-only)
+
+target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1)
+target_compile_features(fmt-header-only INTERFACE cxx_std_11)
+
+target_include_directories(fmt-header-only
+  ${FMT_SYSTEM_HEADERS_ATTRIBUTE} INTERFACE
+  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:${FMT_INC_DIR}>)
+
+# Install targets.
+if (FMT_INSTALL)
+  include(CMakePackageConfigHelpers)
+  set_verbose(FMT_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/fmt CACHE STRING
+              "Installation directory for cmake files, a relative path that "
+              "will be joined with ${CMAKE_INSTALL_PREFIX} or an absolute "
+              "path.")
+  set(version_config ${PROJECT_BINARY_DIR}/fmt-config-version.cmake)
+  set(project_config ${PROJECT_BINARY_DIR}/fmt-config.cmake)
+  set(pkgconfig ${PROJECT_BINARY_DIR}/fmt.pc)
+  set(targets_export_name fmt-targets)
+
+  set_verbose(FMT_LIB_DIR ${CMAKE_INSTALL_LIBDIR} CACHE STRING
+              "Installation directory for libraries, a relative path that "
+              "will be joined to ${CMAKE_INSTALL_PREFIX} or an absolute path.")
+
+  set_verbose(FMT_PKGCONFIG_DIR ${CMAKE_INSTALL_LIBDIR}/pkgconfig CACHE STRING
+              "Installation directory for pkgconfig (.pc) files, a relative "
+              "path that will be joined with ${CMAKE_INSTALL_PREFIX} or an "
+              "absolute path.")
+
+  # Generate the version, config and target files into the build directory.
+  write_basic_package_version_file(
+    ${version_config}
+    VERSION ${FMT_VERSION}
+    COMPATIBILITY AnyNewerVersion)
+
+  join_paths(libdir_for_pc_file "\${exec_prefix}" "${FMT_LIB_DIR}")
+  join_paths(includedir_for_pc_file "\${prefix}" "${FMT_INC_DIR}")
+
+  configure_file(
+    "${PROJECT_SOURCE_DIR}/support/cmake/fmt.pc.in"
+    "${pkgconfig}"
+    @ONLY)
+  configure_package_config_file(
+    ${PROJECT_SOURCE_DIR}/support/cmake/fmt-config.cmake.in
+    ${project_config}
+    INSTALL_DESTINATION ${FMT_CMAKE_DIR})
+
+  set(INSTALL_TARGETS fmt fmt-header-only)
+
+  # Install the library and headers.
+  install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name}
+          LIBRARY DESTINATION ${FMT_LIB_DIR}
+          ARCHIVE DESTINATION ${FMT_LIB_DIR}
+          PUBLIC_HEADER DESTINATION "${FMT_INC_DIR}/fmt"
+          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+  # Use a namespace because CMake provides better diagnostics for namespaced
+  # imported targets.
+  export(TARGETS ${INSTALL_TARGETS} NAMESPACE fmt::
+         FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake)
+
+  # Install version, config and target files.
+  install(
+    FILES ${project_config} ${version_config}
+    DESTINATION ${FMT_CMAKE_DIR})
+  install(EXPORT ${targets_export_name} DESTINATION ${FMT_CMAKE_DIR}
+          NAMESPACE fmt::)
+
+  install(FILES "${pkgconfig}" DESTINATION "${FMT_PKGCONFIG_DIR}")
+endif ()
+
+if (FMT_DOC)
+  add_subdirectory(doc)
+endif ()
+
+if (FMT_TEST)
+  enable_testing()
+  add_subdirectory(test)
+endif ()
+
+# Control fuzzing independent of the unit tests.
+if (FMT_FUZZ)
+  add_subdirectory(test/fuzzing)
+
+  # The FMT_FUZZ macro is used to prevent resource exhaustion in fuzzing
+  # mode and make fuzzing practically possible. It is similar to
+  # FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION but uses a different name to
+  # avoid interfering with fuzzing of projects that use {fmt}.
+  # See also https://llvm.org/docs/LibFuzzer.html#fuzzer-friendly-build-mode.
+  target_compile_definitions(fmt PUBLIC FMT_FUZZ)
+endif ()
+
+set(gitignore ${PROJECT_SOURCE_DIR}/.gitignore)
+if (FMT_MASTER_PROJECT AND EXISTS ${gitignore})
+  # Get the list of ignored files from .gitignore.
+  file (STRINGS ${gitignore} lines)
+  list(REMOVE_ITEM lines /doc/html)
+  foreach (line ${lines})
+    string(REPLACE "." "[.]" line "${line}")
+    string(REPLACE "*" ".*" line "${line}")
+    set(ignored_files ${ignored_files} "${line}$" "${line}/")
+  endforeach ()
+  set(ignored_files ${ignored_files}
+    /.git /breathe /format-benchmark sphinx/ .buildinfo .doctrees)
+
+  set(CPACK_SOURCE_GENERATOR ZIP)
+  set(CPACK_SOURCE_IGNORE_FILES ${ignored_files})
+  set(CPACK_SOURCE_PACKAGE_FILE_NAME fmt-${FMT_VERSION})
+  set(CPACK_PACKAGE_NAME fmt)
+  set(CPACK_RESOURCE_FILE_README ${PROJECT_SOURCE_DIR}/README.md)
+  include(CPack)
+endif ()

dep/fmt/CONTRIBUTING.md

@@ -0,0 +1,20 @@
+Contributing to {fmt}
+=====================
+
+By submitting a pull request or a patch, you represent that you have the right
+to license your contribution to the {fmt} project owners and the community,
+agree that your contributions are licensed under the {fmt} license, and agree
+to future changes to the licensing.
+
+All C++ code must adhere to [Google C++ Style Guide](
+https://google.github.io/styleguide/cppguide.html) with the following
+exceptions:
+
+* Exceptions are permitted
+* snake_case should be used instead of UpperCamelCase for function and type
+  names
+
+All documentation must adhere to the [Google Developer Documentation Style
+Guide](https://developers.google.com/style).
+
+Thanks for contributing!

dep/fmt/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+--- Optional exception to the license ---
+
+As an exception, if, as a result of your compiling your source code, portions
+of this Software are embedded into a machine-executable object form of such
+source code, you may redistribute such embedded portions in such object form
+without including the above copyright and permission notices.

dep/fmt/README.md

@@ -0,0 +1,490 @@
+<img src="https://user-images.githubusercontent.com/576385/156254208-f5b743a9-88cf-439d-b0c0-923d53e8d551.png" alt="{fmt}" width="25%"/>
+
+[![image](https://github.com/fmtlib/fmt/workflows/linux/badge.svg)](https://github.com/fmtlib/fmt/actions?query=workflow%3Alinux)
+[![image](https://github.com/fmtlib/fmt/workflows/macos/badge.svg)](https://github.com/fmtlib/fmt/actions?query=workflow%3Amacos)
+[![image](https://github.com/fmtlib/fmt/workflows/windows/badge.svg)](https://github.com/fmtlib/fmt/actions?query=workflow%3Awindows)
+[![fmt is continuously fuzzed at oss-fuzz](https://oss-fuzz-build-logs.storage.googleapis.com/badges/fmt.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?\%0Acolspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20\%0ASummary&q=proj%3Dfmt&can=1)
+[![Ask questions at StackOverflow with the tag fmt](https://img.shields.io/badge/stackoverflow-fmt-blue.svg)](https://stackoverflow.com/questions/tagged/fmt)
+[![image](https://api.securityscorecards.dev/projects/github.com/fmtlib/fmt/badge)](https://securityscorecards.dev/viewer/?uri=github.com/fmtlib/fmt)
+
+**{fmt}** is an open-source formatting library providing a fast and safe
+alternative to C stdio and C++ iostreams.
+
+If you like this project, please consider donating to one of the funds
+that help victims of the war in Ukraine: <https://www.stopputin.net/>.
+
+[Documentation](https://fmt.dev)
+
+[Cheat Sheets](https://hackingcpp.com/cpp/libs/fmt.html)
+
+Q&A: ask questions on [StackOverflow with the tag
+fmt](https://stackoverflow.com/questions/tagged/fmt).
+
+Try {fmt} in [Compiler Explorer](https://godbolt.org/z/Eq5763).
+
+# Features
+
+- Simple [format API](https://fmt.dev/latest/api.html) with positional
+  arguments for localization
+- Implementation of [C++20
+  std::format](https://en.cppreference.com/w/cpp/utility/format) and
+  [C++23 std::print](https://en.cppreference.com/w/cpp/io/print)
+- [Format string syntax](https://fmt.dev/latest/syntax.html) similar
+  to Python\'s
+  [format](https://docs.python.org/3/library/stdtypes.html#str.format)
+- Fast IEEE 754 floating-point formatter with correct rounding,
+  shortness and round-trip guarantees using the
+  [Dragonbox](https://github.com/jk-jeon/dragonbox) algorithm
+- Portable Unicode support
+- Safe [printf
+  implementation](https://fmt.dev/latest/api.html#printf-formatting)
+  including the POSIX extension for positional arguments
+- Extensibility: [support for user-defined
+  types](https://fmt.dev/latest/api.html#formatting-user-defined-types)
+- High performance: faster than common standard library
+  implementations of `(s)printf`, iostreams, `to_string` and
+  `to_chars`, see [Speed tests](#speed-tests) and [Converting a
+  hundred million integers to strings per
+  second](http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html)
+- Small code size both in terms of source code with the minimum
+  configuration consisting of just three files, `core.h`, `format.h`
+  and `format-inl.h`, and compiled code; see [Compile time and code
+  bloat](#compile-time-and-code-bloat)
+- Reliability: the library has an extensive set of
+  [tests](https://github.com/fmtlib/fmt/tree/master/test) and is
+  [continuously fuzzed](https://bugs.chromium.org/p/oss-fuzz/issues/list?colspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20Summary&q=proj%3Dfmt&can=1)
+- Safety: the library is fully type-safe, errors in format strings can
+  be reported at compile time, automatic memory management prevents
+  buffer overflow errors
+- Ease of use: small self-contained code base, no external
+  dependencies, permissive MIT
+  [license](https://github.com/fmtlib/fmt/blob/master/LICENSE.rst)
+- [Portability](https://fmt.dev/latest/index.html#portability) with
+  consistent output across platforms and support for older compilers
+- Clean warning-free codebase even on high warning levels such as
+  `-Wall -Wextra -pedantic`
+- Locale independence by default
+- Optional header-only configuration enabled with the
+  `FMT_HEADER_ONLY` macro
+
+See the [documentation](https://fmt.dev) for more details.
+
+# Examples
+
+**Print to stdout** ([run](https://godbolt.org/z/Tevcjh))
+
+``` c++
+#include <fmt/core.h>
+
+int main() {
+  fmt::print("Hello, world!\n");
+}
+```
+
+**Format a string** ([run](https://godbolt.org/z/oK8h33))
+
+``` c++
+std::string s = fmt::format("The answer is {}.", 42);
+// s == "The answer is 42."
+```
+
+**Format a string using positional arguments**
+([run](https://godbolt.org/z/Yn7Txe))
+
+``` c++
+std::string s = fmt::format("I'd rather be {1} than {0}.", "right", "happy");
+// s == "I'd rather be happy than right."
+```
+
+**Print dates and times** ([run](https://godbolt.org/z/c31ExdY3W))
+
+``` c++
+#include <fmt/chrono.h>
+
+int main() {
+  auto now = std::chrono::system_clock::now();
+  fmt::print("Date and time: {}\n", now);
+  fmt::print("Time: {:%H:%M}\n", now);
+}
+```
+
+Output:
+
+    Date and time: 2023-12-26 19:10:31.557195597
+    Time: 19:10
+
+**Print a container** ([run](https://godbolt.org/z/MxM1YqjE7))
+
+``` c++
+#include <vector>
+#include <fmt/ranges.h>
+
+int main() {
+  std::vector<int> v = {1, 2, 3};
+  fmt::print("{}\n", v);
+}
+```
+
+Output:
+
+    [1, 2, 3]
+
+**Check a format string at compile time**
+
+``` c++
+std::string s = fmt::format("{:d}", "I am not a number");
+```
+
+This gives a compile-time error in C++20 because `d` is an invalid
+format specifier for a string.
+
+**Write a file from a single thread**
+
+``` c++
+#include <fmt/os.h>
+
+int main() {
+  auto out = fmt::output_file("guide.txt");
+  out.print("Don't {}", "Panic");
+}
+```
+
+This can be [5 to 9 times faster than
+fprintf](http://www.zverovich.net/2020/08/04/optimal-file-buffer-size.html).
+
+**Print with colors and text styles**
+
+``` c++
+#include <fmt/color.h>
+
+int main() {
+  fmt::print(fg(fmt::color::crimson) | fmt::emphasis::bold,
+             "Hello, {}!\n", "world");
+  fmt::print(fg(fmt::color::floral_white) | bg(fmt::color::slate_gray) |
+             fmt::emphasis::underline, "Olá, {}!\n", "Mundo");
+  fmt::print(fg(fmt::color::steel_blue) | fmt::emphasis::italic,
+             "你好{}！\n", "世界");
+}
+```
+
+Output on a modern terminal with Unicode support:
+
+![image](https://github.com/fmtlib/fmt/assets/%0A576385/2a93c904-d6fa-4aa6-b453-2618e1c327d7)
+
+# Benchmarks
+
+## Speed tests
+
+| Library           | Method        | Run Time, s |
+|-------------------|---------------|-------------|
+| libc              | printf        |   0.91      |
+| libc++            | std::ostream  |   2.49      |
+| {fmt} 9.1         | fmt::print    |   0.74      |
+| Boost Format 1.80 | boost::format |   6.26      |
+| Folly Format      | folly::format |   1.87      |
+
+{fmt} is the fastest of the benchmarked methods, \~20% faster than
+`printf`.
+
+The above results were generated by building `tinyformat_test.cpp` on
+macOS 12.6.1 with `clang++ -O3 -DNDEBUG -DSPEED_TEST -DHAVE_FORMAT`, and
+taking the best of three runs. In the test, the format string
+`"%0.10f:%04d:%+g:%s:%p:%c:%%\n"` or equivalent is filled 2,000,000
+times with output sent to `/dev/null`; for further details refer to the
+[source](https://github.com/fmtlib/format-benchmark/blob/master/src/tinyformat-test.cc).
+
+{fmt} is up to 20-30x faster than `std::ostringstream` and `sprintf` on
+IEEE754 `float` and `double` formatting
+([dtoa-benchmark](https://github.com/fmtlib/dtoa-benchmark)) and faster
+than [double-conversion](https://github.com/google/double-conversion)
+and [ryu](https://github.com/ulfjack/ryu):
+
+[![image](https://user-images.githubusercontent.com/576385/95684665-11719600-0ba8-11eb-8e5b-972ff4e49428.png)](https://fmt.dev/unknown_mac64_clang12.0.html)
+
+## Compile time and code bloat
+
+The script
+[bloat-test.py](https://github.com/fmtlib/format-benchmark/blob/master/bloat-test.py)
+from [format-benchmark](https://github.com/fmtlib/format-benchmark)
+tests compile time and code bloat for nontrivial projects. It generates
+100 translation units and uses `printf()` or its alternative five times
+in each to simulate a medium-sized project. The resulting executable
+size and compile time (Apple LLVM version 8.1.0 (clang-802.0.42), macOS
+Sierra, best of three) is shown in the following tables.
+
+**Optimized build (-O3)**
+
+| Method        | Compile Time, s | Executable size, KiB | Stripped size, KiB |
+|---------------|-----------------|----------------------|--------------------|
+| printf        |   2.6           |   29                 |   26               |
+| printf+string |   16.4          |   29                 |   26               |
+| iostreams     |   31.1          |   59                 |   55               |
+| {fmt}         |   19.0          |   37                 |   34               |
+| Boost Format  |   91.9          |   226                |   203              |
+| Folly Format  |   115.7         |   101                |   88               |
+
+As you can see, {fmt} has 60% less overhead in terms of resulting binary
+code size compared to iostreams and comes pretty close to `printf`.
+Boost Format and Folly Format have the largest overheads.
+
+`printf+string` is the same as `printf` but with an extra `<string>`
+include to measure the overhead of the latter.
+
+**Non-optimized build**
+
+| Method        | Compile Time, s | Executable size, KiB | Stripped size, KiB |
+|---------------|-----------------|----------------------|--------------------|
+| printf        |   2.2           |   33                 |   30               |
+| printf+string |   16.0          |   33                 |   30               |
+| iostreams     |   28.3          |   56                 |   52               |
+| {fmt}         |   18.2          |   59                 |   50               |
+| Boost Format  |   54.1          |   365                |   303              |
+| Folly Format  |   79.9          |   445                |   430              |
+
+`libc`, `lib(std)c++`, and `libfmt` are all linked as shared libraries
+to compare formatting function overhead only. Boost Format is a
+header-only library so it doesn\'t provide any linkage options.
+
+## Running the tests
+
+Please refer to [Building the
+library](https://fmt.dev/latest/usage.html#building-the-library) for
+instructions on how to build the library and run the unit tests.
+
+Benchmarks reside in a separate repository,
+[format-benchmarks](https://github.com/fmtlib/format-benchmark), so to
+run the benchmarks you first need to clone this repository and generate
+Makefiles with CMake:
+
+    $ git clone --recursive https://github.com/fmtlib/format-benchmark.git
+    $ cd format-benchmark
+    $ cmake .
+
+Then you can run the speed test:
+
+    $ make speed-test
+
+or the bloat test:
+
+    $ make bloat-test
+
+# Migrating code
+
+[clang-tidy](https://clang.llvm.org/extra/clang-tidy/) v17 (not yet
+released) provides the
+[modernize-use-std-print](https://clang.llvm.org/extra/clang-tidy/checks/modernize/use-std-print.html)
+check that is capable of converting occurrences of `printf` and
+`fprintf` to `fmt::print` if configured to do so. (By default it
+converts to `std::print`.)
+
+# Notable projects using this library
+
+- [0 A.D.](https://play0ad.com/): a free, open-source, cross-platform
+  real-time strategy game
+- [AMPL/MP](https://github.com/ampl/mp): an open-source library for
+  mathematical programming
+- [Apple's FoundationDB](https://github.com/apple/foundationdb): an open-source,
+  distributed, transactional key-value store
+- [Aseprite](https://github.com/aseprite/aseprite): animated sprite
+  editor & pixel art tool
+- [AvioBook](https://www.aviobook.aero/en): a comprehensive aircraft
+  operations suite
+- [Blizzard Battle.net](https://battle.net/): an online gaming
+  platform
+- [Celestia](https://celestia.space/): real-time 3D visualization of
+  space
+- [Ceph](https://ceph.com/): a scalable distributed storage system
+- [ccache](https://ccache.dev/): a compiler cache
+- [ClickHouse](https://github.com/ClickHouse/ClickHouse): an
+  analytical database management system
+- [Contour](https://github.com/contour-terminal/contour/): a modern
+  terminal emulator
+- [CUAUV](https://cuauv.org/): Cornell University\'s autonomous
+  underwater vehicle
+- [Drake](https://drake.mit.edu/): a planning, control, and analysis
+  toolbox for nonlinear dynamical systems (MIT)
+- [Envoy](https://lyft.github.io/envoy/): C++ L7 proxy and
+  communication bus (Lyft)
+- [FiveM](https://fivem.net/): a modification framework for GTA V
+- [fmtlog](https://github.com/MengRao/fmtlog): a performant
+  fmtlib-style logging library with latency in nanoseconds
+- [Folly](https://github.com/facebook/folly): Facebook open-source
+  library
+- [GemRB](https://gemrb.org/): a portable open-source implementation
+  of Bioware's Infinity Engine
+- [Grand Mountain
+  Adventure](https://store.steampowered.com/app/1247360/Grand_Mountain_Adventure/):
+  a beautiful open-world ski & snowboarding game
+- [HarpyWar/pvpgn](https://github.com/pvpgn/pvpgn-server): Player vs
+  Player Gaming Network with tweaks
+- [KBEngine](https://github.com/kbengine/kbengine): an open-source
+  MMOG server engine
+- [Keypirinha](https://keypirinha.com/): a semantic launcher for
+  Windows
+- [Kodi](https://kodi.tv/) (formerly xbmc): home theater software
+- [Knuth](https://kth.cash/): high-performance Bitcoin full-node
+- [libunicode](https://github.com/contour-terminal/libunicode/): a
+  modern C++17 Unicode library
+- [MariaDB](https://mariadb.org/): relational database management
+  system
+- [Microsoft Verona](https://github.com/microsoft/verona): research
+  programming language for concurrent ownership
+- [MongoDB](https://mongodb.com/): distributed document database
+- [MongoDB Smasher](https://github.com/duckie/mongo_smasher): a small
+  tool to generate randomized datasets
+- [OpenSpace](https://openspaceproject.com/): an open-source
+  astrovisualization framework
+- [PenUltima Online (POL)](https://www.polserver.com/): an MMO server,
+  compatible with most Ultima Online clients
+- [PyTorch](https://github.com/pytorch/pytorch): an open-source
+  machine learning library
+- [quasardb](https://www.quasardb.net/): a distributed,
+  high-performance, associative database
+- [Quill](https://github.com/odygrd/quill): asynchronous low-latency
+  logging library
+- [QKW](https://github.com/ravijanjam/qkw): generalizing aliasing to
+  simplify navigation, and executing complex multi-line terminal
+  command sequences
+- [redis-cerberus](https://github.com/HunanTV/redis-cerberus): a Redis
+  cluster proxy
+- [redpanda](https://vectorized.io/redpanda): a 10x faster Kafka®
+  replacement for mission-critical systems written in C++
+- [rpclib](http://rpclib.net/): a modern C++ msgpack-RPC server and
+  client library
+- [Salesforce Analytics
+  Cloud](https://www.salesforce.com/analytics-cloud/overview/):
+  business intelligence software
+- [Scylla](https://www.scylladb.com/): a Cassandra-compatible NoSQL
+  data store that can handle 1 million transactions per second on a
+  single server
+- [Seastar](http://www.seastar-project.org/): an advanced, open-source
+  C++ framework for high-performance server applications on modern
+  hardware
+- [spdlog](https://github.com/gabime/spdlog): super fast C++ logging
+  library
+- [Stellar](https://www.stellar.org/): financial platform
+- [Touch Surgery](https://www.touchsurgery.com/): surgery simulator
+- [TrinityCore](https://github.com/TrinityCore/TrinityCore):
+  open-source MMORPG framework
+- [🐙 userver framework](https://userver.tech/): open-source
+  asynchronous framework with a rich set of abstractions and database
+  drivers
+- [Windows Terminal](https://github.com/microsoft/terminal): the new
+  Windows terminal
+
+[More\...](https://github.com/search?q=fmtlib&type=Code)
+
+If you are aware of other projects using this library, please let me
+know by [email](mailto:victor.zverovich@gmail.com) or by submitting an
+[issue](https://github.com/fmtlib/fmt/issues).
+
+# Motivation
+
+So why yet another formatting library?
+
+There are plenty of methods for doing this task, from standard ones like
+the printf family of function and iostreams to Boost Format and
+FastFormat libraries. The reason for creating a new library is that
+every existing solution that I found either had serious issues or
+didn\'t provide all the features I needed.
+
+## printf
+
+The good thing about `printf` is that it is pretty fast and readily
+available being a part of the C standard library. The main drawback is
+that it doesn\'t support user-defined types. `printf` also has safety
+issues although they are somewhat mitigated with [\_\_attribute\_\_
+((format (printf,
+\...))](https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html) in
+GCC. There is a POSIX extension that adds positional arguments required
+for
+[i18n](https://en.wikipedia.org/wiki/Internationalization_and_localization)
+to `printf` but it is not a part of C99 and may not be available on some
+platforms.
+
+## iostreams
+
+The main issue with iostreams is best illustrated with an example:
+
+``` c++
+std::cout << std::setprecision(2) << std::fixed << 1.23456 << "\n";
+```
+
+which is a lot of typing compared to printf:
+
+``` c++
+printf("%.2f\n", 1.23456);
+```
+
+Matthew Wilson, the author of FastFormat, called this \"chevron hell\".
+iostreams don\'t support positional arguments by design.
+
+The good part is that iostreams support user-defined types and are safe
+although error handling is awkward.
+
+## Boost Format
+
+This is a very powerful library that supports both `printf`-like format
+strings and positional arguments. Its main drawback is performance.
+According to various benchmarks, it is much slower than other methods
+considered here. Boost Format also has excessive build times and severe
+code bloat issues (see [Benchmarks](#benchmarks)).
+
+## FastFormat
+
+This is an interesting library that is fast, safe, and has positional
+arguments. However, it has significant limitations, citing its author:
+
+> Three features that have no hope of being accommodated within the
+> current design are:
+>
+> - Leading zeros (or any other non-space padding)
+> - Octal/hexadecimal encoding
+> - Runtime width/alignment specification
+
+It is also quite big and has a heavy dependency, STLSoft, which might be
+too restrictive for using it in some projects.
+
+## Boost Spirit.Karma
+
+This is not a formatting library but I decided to include it here for
+completeness. As iostreams, it suffers from the problem of mixing
+verbatim text with arguments. The library is pretty fast, but slower on
+integer formatting than `fmt::format_to` with format string compilation
+on Karma\'s own benchmark, see [Converting a hundred million integers to
+strings per
+second](http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html).
+
+# License
+
+{fmt} is distributed under the MIT
+[license](https://github.com/fmtlib/fmt/blob/master/LICENSE).
+
+# Documentation License
+
+The [Format String Syntax](https://fmt.dev/latest/syntax.html) section
+in the documentation is based on the one from Python [string module
+documentation](https://docs.python.org/3/library/string.html#module-string).
+For this reason, the documentation is distributed under the Python
+Software Foundation license available in
+[doc/python-license.txt](https://raw.github.com/fmtlib/fmt/master/doc/python-license.txt).
+It only applies if you distribute the documentation of {fmt}.
+
+# Maintainers
+
+The {fmt} library is maintained by Victor Zverovich
+([vitaut](https://github.com/vitaut)) with contributions from many other
+people. See
+[Contributors](https://github.com/fmtlib/fmt/graphs/contributors) and
+[Releases](https://github.com/fmtlib/fmt/releases) for some of the
+names. Let us know if your contribution is not listed or mentioned
+incorrectly and we\'ll make it right.
+
+# Security Policy
+
+To report a security issue, please disclose it at [security
+advisory](https://github.com/fmtlib/fmt/security/advisories/new).
+
+This project is maintained by a team of volunteers on a
+reasonable-effort basis. As such, please give us at least 90 days to
+work on a fix before public exposure.

dep/fmt/UPSTREAM.md

@@ -0,0 +1,2 @@
+This is a pruned version of fmt 10.2.1, obtained from
+https://github.com/fmtlib/fmt/releases/tag/10.2.1.

dep/fmt/build.py

@@ -0,0 +1,18 @@
+from build.c import cxxlibrary, HostToolchain
+
+cxxlibrary(
+    name="fmt",
+    srcs=[
+        "./src/format.cc",
+        "./src/os.cc",
+    ],
+    cflags=["-Idep/fmt/include"],
+    hdrs={
+        "fmt/args.h": "./include/fmt/args.h",
+        "fmt/chrono.h": "./include/fmt/chrono.h",
+        "fmt/core.h": "./include/fmt/core.h",
+        "fmt/format.h": "./include/fmt/format.h",
+        "fmt/ostream.h": "./include/fmt/ostream.h",
+        "fmt/ranges.h": "./include/fmt/ranges.h",
+    },
+)

dep/fmt/include/fmt/args.h

@@ -0,0 +1,235 @@
+// Formatting library for C++ - dynamic argument lists
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_ARGS_H_
+#define FMT_ARGS_H_
+
+#include <functional>  // std::reference_wrapper
+#include <memory>      // std::unique_ptr
+#include <vector>
+
+#include "core.h"
+
+FMT_BEGIN_NAMESPACE
+
+namespace detail {
+
+template <typename T> struct is_reference_wrapper : std::false_type {};
+template <typename T>
+struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {};
+
+template <typename T> auto unwrap(const T& v) -> const T& { return v; }
+template <typename T>
+auto unwrap(const std::reference_wrapper<T>& v) -> const T& {
+  return static_cast<const T&>(v);
+}
+
+class dynamic_arg_list {
+  // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
+  // templates it doesn't complain about inability to deduce single translation
+  // unit for placing vtable. So storage_node_base is made a fake template.
+  template <typename = void> struct node {
+    virtual ~node() = default;
+    std::unique_ptr<node<>> next;
+  };
+
+  template <typename T> struct typed_node : node<> {
+    T value;
+
+    template <typename Arg>
+    FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {}
+
+    template <typename Char>
+    FMT_CONSTEXPR typed_node(const basic_string_view<Char>& arg)
+        : value(arg.data(), arg.size()) {}
+  };
+
+  std::unique_ptr<node<>> head_;
+
+ public:
+  template <typename T, typename Arg> auto push(const Arg& arg) -> const T& {
+    auto new_node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg));
+    auto& value = new_node->value;
+    new_node->next = std::move(head_);
+    head_ = std::move(new_node);
+    return value;
+  }
+};
+}  // namespace detail
+
+/**
+  \rst
+  A dynamic version of `fmt::format_arg_store`.
+  It's equipped with a storage to potentially temporary objects which lifetimes
+  could be shorter than the format arguments object.
+
+  It can be implicitly converted into `~fmt::basic_format_args` for passing
+  into type-erased formatting functions such as `~fmt::vformat`.
+  \endrst
+ */
+template <typename Context>
+class dynamic_format_arg_store
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+    // Workaround a GCC template argument substitution bug.
+    : public basic_format_args<Context>
+#endif
+{
+ private:
+  using char_type = typename Context::char_type;
+
+  template <typename T> struct need_copy {
+    static constexpr detail::type mapped_type =
+        detail::mapped_type_constant<T, Context>::value;
+
+    enum {
+      value = !(detail::is_reference_wrapper<T>::value ||
+                std::is_same<T, basic_string_view<char_type>>::value ||
+                std::is_same<T, detail::std_string_view<char_type>>::value ||
+                (mapped_type != detail::type::cstring_type &&
+                 mapped_type != detail::type::string_type &&
+                 mapped_type != detail::type::custom_type))
+    };
+  };
+
+  template <typename T>
+  using stored_type = conditional_t<
+      std::is_convertible<T, std::basic_string<char_type>>::value &&
+          !detail::is_reference_wrapper<T>::value,
+      std::basic_string<char_type>, T>;
+
+  // Storage of basic_format_arg must be contiguous.
+  std::vector<basic_format_arg<Context>> data_;
+  std::vector<detail::named_arg_info<char_type>> named_info_;
+
+  // Storage of arguments not fitting into basic_format_arg must grow
+  // without relocation because items in data_ refer to it.
+  detail::dynamic_arg_list dynamic_args_;
+
+  friend class basic_format_args<Context>;
+
+  auto get_types() const -> unsigned long long {
+    return detail::is_unpacked_bit | data_.size() |
+           (named_info_.empty()
+                ? 0ULL
+                : static_cast<unsigned long long>(detail::has_named_args_bit));
+  }
+
+  auto data() const -> const basic_format_arg<Context>* {
+    return named_info_.empty() ? data_.data() : data_.data() + 1;
+  }
+
+  template <typename T> void emplace_arg(const T& arg) {
+    data_.emplace_back(detail::make_arg<Context>(arg));
+  }
+
+  template <typename T>
+  void emplace_arg(const detail::named_arg<char_type, T>& arg) {
+    if (named_info_.empty()) {
+      constexpr const detail::named_arg_info<char_type>* zero_ptr{nullptr};
+      data_.insert(data_.begin(), {zero_ptr, 0});
+    }
+    data_.emplace_back(detail::make_arg<Context>(detail::unwrap(arg.value)));
+    auto pop_one = [](std::vector<basic_format_arg<Context>>* data) {
+      data->pop_back();
+    };
+    std::unique_ptr<std::vector<basic_format_arg<Context>>, decltype(pop_one)>
+        guard{&data_, pop_one};
+    named_info_.push_back({arg.name, static_cast<int>(data_.size() - 2u)});
+    data_[0].value_.named_args = {named_info_.data(), named_info_.size()};
+    guard.release();
+  }
+
+ public:
+  constexpr dynamic_format_arg_store() = default;
+
+  /**
+    \rst
+    Adds an argument into the dynamic store for later passing to a formatting
+    function.
+
+    Note that custom types and string types (but not string views) are copied
+    into the store dynamically allocating memory if necessary.
+
+    **Example**::
+
+      fmt::dynamic_format_arg_store<fmt::format_context> store;
+      store.push_back(42);
+      store.push_back("abc");
+      store.push_back(1.5f);
+      std::string result = fmt::vformat("{} and {} and {}", store);
+    \endrst
+  */
+  template <typename T> void push_back(const T& arg) {
+    if (detail::const_check(need_copy<T>::value))
+      emplace_arg(dynamic_args_.push<stored_type<T>>(arg));
+    else
+      emplace_arg(detail::unwrap(arg));
+  }
+
+  /**
+    \rst
+    Adds a reference to the argument into the dynamic store for later passing to
+    a formatting function.
+
+    **Example**::
+
+      fmt::dynamic_format_arg_store<fmt::format_context> store;
+      char band[] = "Rolling Stones";
+      store.push_back(std::cref(band));
+      band[9] = 'c'; // Changing str affects the output.
+      std::string result = fmt::vformat("{}", store);
+      // result == "Rolling Scones"
+    \endrst
+  */
+  template <typename T> void push_back(std::reference_wrapper<T> arg) {
+    static_assert(
+        need_copy<T>::value,
+        "objects of built-in types and string views are always copied");
+    emplace_arg(arg.get());
+  }
+
+  /**
+    Adds named argument into the dynamic store for later passing to a formatting
+    function. ``std::reference_wrapper`` is supported to avoid copying of the
+    argument. The name is always copied into the store.
+  */
+  template <typename T>
+  void push_back(const detail::named_arg<char_type, T>& arg) {
+    const char_type* arg_name =
+        dynamic_args_.push<std::basic_string<char_type>>(arg.name).c_str();
+    if (detail::const_check(need_copy<T>::value)) {
+      emplace_arg(
+          fmt::arg(arg_name, dynamic_args_.push<stored_type<T>>(arg.value)));
+    } else {
+      emplace_arg(fmt::arg(arg_name, arg.value));
+    }
+  }
+
+  /** Erase all elements from the store */
+  void clear() {
+    data_.clear();
+    named_info_.clear();
+    dynamic_args_ = detail::dynamic_arg_list();
+  }
+
+  /**
+    \rst
+    Reserves space to store at least *new_cap* arguments including
+    *new_cap_named* named arguments.
+    \endrst
+  */
+  void reserve(size_t new_cap, size_t new_cap_named) {
+    FMT_ASSERT(new_cap >= new_cap_named,
+               "Set of arguments includes set of named arguments");
+    data_.reserve(new_cap);
+    named_info_.reserve(new_cap_named);
+  }
+};
+
+FMT_END_NAMESPACE
+
+#endif  // FMT_ARGS_H_

dep/fmt/include/fmt/color.h

@@ -0,0 +1,643 @@
+// Formatting library for C++ - color support
+//
+// Copyright (c) 2018 - present, Victor Zverovich and fmt contributors
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_COLOR_H_
+#define FMT_COLOR_H_
+
+#include "format.h"
+
+FMT_BEGIN_NAMESPACE
+FMT_BEGIN_EXPORT
+
+enum class color : uint32_t {
+  alice_blue = 0xF0F8FF,               // rgb(240,248,255)
+  antique_white = 0xFAEBD7,            // rgb(250,235,215)
+  aqua = 0x00FFFF,                     // rgb(0,255,255)
+  aquamarine = 0x7FFFD4,               // rgb(127,255,212)
+  azure = 0xF0FFFF,                    // rgb(240,255,255)
+  beige = 0xF5F5DC,                    // rgb(245,245,220)
+  bisque = 0xFFE4C4,                   // rgb(255,228,196)
+  black = 0x000000,                    // rgb(0,0,0)
+  blanched_almond = 0xFFEBCD,          // rgb(255,235,205)
+  blue = 0x0000FF,                     // rgb(0,0,255)
+  blue_violet = 0x8A2BE2,              // rgb(138,43,226)
+  brown = 0xA52A2A,                    // rgb(165,42,42)
+  burly_wood = 0xDEB887,               // rgb(222,184,135)
+  cadet_blue = 0x5F9EA0,               // rgb(95,158,160)
+  chartreuse = 0x7FFF00,               // rgb(127,255,0)
+  chocolate = 0xD2691E,                // rgb(210,105,30)
+  coral = 0xFF7F50,                    // rgb(255,127,80)
+  cornflower_blue = 0x6495ED,          // rgb(100,149,237)
+  cornsilk = 0xFFF8DC,                 // rgb(255,248,220)
+  crimson = 0xDC143C,                  // rgb(220,20,60)
+  cyan = 0x00FFFF,                     // rgb(0,255,255)
+  dark_blue = 0x00008B,                // rgb(0,0,139)
+  dark_cyan = 0x008B8B,                // rgb(0,139,139)
+  dark_golden_rod = 0xB8860B,          // rgb(184,134,11)
+  dark_gray = 0xA9A9A9,                // rgb(169,169,169)
+  dark_green = 0x006400,               // rgb(0,100,0)
+  dark_khaki = 0xBDB76B,               // rgb(189,183,107)
+  dark_magenta = 0x8B008B,             // rgb(139,0,139)
+  dark_olive_green = 0x556B2F,         // rgb(85,107,47)
+  dark_orange = 0xFF8C00,              // rgb(255,140,0)
+  dark_orchid = 0x9932CC,              // rgb(153,50,204)
+  dark_red = 0x8B0000,                 // rgb(139,0,0)
+  dark_salmon = 0xE9967A,              // rgb(233,150,122)
+  dark_sea_green = 0x8FBC8F,           // rgb(143,188,143)
+  dark_slate_blue = 0x483D8B,          // rgb(72,61,139)
+  dark_slate_gray = 0x2F4F4F,          // rgb(47,79,79)
+  dark_turquoise = 0x00CED1,           // rgb(0,206,209)
+  dark_violet = 0x9400D3,              // rgb(148,0,211)
+  deep_pink = 0xFF1493,                // rgb(255,20,147)
+  deep_sky_blue = 0x00BFFF,            // rgb(0,191,255)
+  dim_gray = 0x696969,                 // rgb(105,105,105)
+  dodger_blue = 0x1E90FF,              // rgb(30,144,255)
+  fire_brick = 0xB22222,               // rgb(178,34,34)
+  floral_white = 0xFFFAF0,             // rgb(255,250,240)
+  forest_green = 0x228B22,             // rgb(34,139,34)
+  fuchsia = 0xFF00FF,                  // rgb(255,0,255)
+  gainsboro = 0xDCDCDC,                // rgb(220,220,220)
+  ghost_white = 0xF8F8FF,              // rgb(248,248,255)
+  gold = 0xFFD700,                     // rgb(255,215,0)
+  golden_rod = 0xDAA520,               // rgb(218,165,32)
+  gray = 0x808080,                     // rgb(128,128,128)
+  green = 0x008000,                    // rgb(0,128,0)
+  green_yellow = 0xADFF2F,             // rgb(173,255,47)
+  honey_dew = 0xF0FFF0,                // rgb(240,255,240)
+  hot_pink = 0xFF69B4,                 // rgb(255,105,180)
+  indian_red = 0xCD5C5C,               // rgb(205,92,92)
+  indigo = 0x4B0082,                   // rgb(75,0,130)
+  ivory = 0xFFFFF0,                    // rgb(255,255,240)
+  khaki = 0xF0E68C,                    // rgb(240,230,140)
+  lavender = 0xE6E6FA,                 // rgb(230,230,250)
+  lavender_blush = 0xFFF0F5,           // rgb(255,240,245)
+  lawn_green = 0x7CFC00,               // rgb(124,252,0)
+  lemon_chiffon = 0xFFFACD,            // rgb(255,250,205)
+  light_blue = 0xADD8E6,               // rgb(173,216,230)
+  light_coral = 0xF08080,              // rgb(240,128,128)
+  light_cyan = 0xE0FFFF,               // rgb(224,255,255)
+  light_golden_rod_yellow = 0xFAFAD2,  // rgb(250,250,210)
+  light_gray = 0xD3D3D3,               // rgb(211,211,211)
+  light_green = 0x90EE90,              // rgb(144,238,144)
+  light_pink = 0xFFB6C1,               // rgb(255,182,193)
+  light_salmon = 0xFFA07A,             // rgb(255,160,122)
+  light_sea_green = 0x20B2AA,          // rgb(32,178,170)
+  light_sky_blue = 0x87CEFA,           // rgb(135,206,250)
+  light_slate_gray = 0x778899,         // rgb(119,136,153)
+  light_steel_blue = 0xB0C4DE,         // rgb(176,196,222)
+  light_yellow = 0xFFFFE0,             // rgb(255,255,224)
+  lime = 0x00FF00,                     // rgb(0,255,0)
+  lime_green = 0x32CD32,               // rgb(50,205,50)
+  linen = 0xFAF0E6,                    // rgb(250,240,230)
+  magenta = 0xFF00FF,                  // rgb(255,0,255)
+  maroon = 0x800000,                   // rgb(128,0,0)
+  medium_aquamarine = 0x66CDAA,        // rgb(102,205,170)
+  medium_blue = 0x0000CD,              // rgb(0,0,205)
+  medium_orchid = 0xBA55D3,            // rgb(186,85,211)
+  medium_purple = 0x9370DB,            // rgb(147,112,219)
+  medium_sea_green = 0x3CB371,         // rgb(60,179,113)
+  medium_slate_blue = 0x7B68EE,        // rgb(123,104,238)
+  medium_spring_green = 0x00FA9A,      // rgb(0,250,154)
+  medium_turquoise = 0x48D1CC,         // rgb(72,209,204)
+  medium_violet_red = 0xC71585,        // rgb(199,21,133)
+  midnight_blue = 0x191970,            // rgb(25,25,112)
+  mint_cream = 0xF5FFFA,               // rgb(245,255,250)
+  misty_rose = 0xFFE4E1,               // rgb(255,228,225)
+  moccasin = 0xFFE4B5,                 // rgb(255,228,181)
+  navajo_white = 0xFFDEAD,             // rgb(255,222,173)
+  navy = 0x000080,                     // rgb(0,0,128)
+  old_lace = 0xFDF5E6,                 // rgb(253,245,230)
+  olive = 0x808000,                    // rgb(128,128,0)
+  olive_drab = 0x6B8E23,               // rgb(107,142,35)
+  orange = 0xFFA500,                   // rgb(255,165,0)
+  orange_red = 0xFF4500,               // rgb(255,69,0)
+  orchid = 0xDA70D6,                   // rgb(218,112,214)
+  pale_golden_rod = 0xEEE8AA,          // rgb(238,232,170)
+  pale_green = 0x98FB98,               // rgb(152,251,152)
+  pale_turquoise = 0xAFEEEE,           // rgb(175,238,238)
+  pale_violet_red = 0xDB7093,          // rgb(219,112,147)
+  papaya_whip = 0xFFEFD5,              // rgb(255,239,213)
+  peach_puff = 0xFFDAB9,               // rgb(255,218,185)
+  peru = 0xCD853F,                     // rgb(205,133,63)
+  pink = 0xFFC0CB,                     // rgb(255,192,203)
+  plum = 0xDDA0DD,                     // rgb(221,160,221)
+  powder_blue = 0xB0E0E6,              // rgb(176,224,230)
+  purple = 0x800080,                   // rgb(128,0,128)
+  rebecca_purple = 0x663399,           // rgb(102,51,153)
+  red = 0xFF0000,                      // rgb(255,0,0)
+  rosy_brown = 0xBC8F8F,               // rgb(188,143,143)
+  royal_blue = 0x4169E1,               // rgb(65,105,225)
+  saddle_brown = 0x8B4513,             // rgb(139,69,19)
+  salmon = 0xFA8072,                   // rgb(250,128,114)
+  sandy_brown = 0xF4A460,              // rgb(244,164,96)
+  sea_green = 0x2E8B57,                // rgb(46,139,87)
+  sea_shell = 0xFFF5EE,                // rgb(255,245,238)
+  sienna = 0xA0522D,                   // rgb(160,82,45)
+  silver = 0xC0C0C0,                   // rgb(192,192,192)
+  sky_blue = 0x87CEEB,                 // rgb(135,206,235)
+  slate_blue = 0x6A5ACD,               // rgb(106,90,205)
+  slate_gray = 0x708090,               // rgb(112,128,144)
+  snow = 0xFFFAFA,                     // rgb(255,250,250)
+  spring_green = 0x00FF7F,             // rgb(0,255,127)
+  steel_blue = 0x4682B4,               // rgb(70,130,180)
+  tan = 0xD2B48C,                      // rgb(210,180,140)
+  teal = 0x008080,                     // rgb(0,128,128)
+  thistle = 0xD8BFD8,                  // rgb(216,191,216)
+  tomato = 0xFF6347,                   // rgb(255,99,71)
+  turquoise = 0x40E0D0,                // rgb(64,224,208)
+  violet = 0xEE82EE,                   // rgb(238,130,238)
+  wheat = 0xF5DEB3,                    // rgb(245,222,179)
+  white = 0xFFFFFF,                    // rgb(255,255,255)
+  white_smoke = 0xF5F5F5,              // rgb(245,245,245)
+  yellow = 0xFFFF00,                   // rgb(255,255,0)
+  yellow_green = 0x9ACD32              // rgb(154,205,50)
+};                                     // enum class color
+
+enum class terminal_color : uint8_t {
+  black = 30,
+  red,
+  green,
+  yellow,
+  blue,
+  magenta,
+  cyan,
+  white,
+  bright_black = 90,
+  bright_red,
+  bright_green,
+  bright_yellow,
+  bright_blue,
+  bright_magenta,
+  bright_cyan,
+  bright_white
+};
+
+enum class emphasis : uint8_t {
+  bold = 1,
+  faint = 1 << 1,
+  italic = 1 << 2,
+  underline = 1 << 3,
+  blink = 1 << 4,
+  reverse = 1 << 5,
+  conceal = 1 << 6,
+  strikethrough = 1 << 7,
+};
+
+// rgb is a struct for red, green and blue colors.
+// Using the name "rgb" makes some editors show the color in a tooltip.
+struct rgb {
+  FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {}
+  FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
+  FMT_CONSTEXPR rgb(uint32_t hex)
+      : r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {}
+  FMT_CONSTEXPR rgb(color hex)
+      : r((uint32_t(hex) >> 16) & 0xFF),
+        g((uint32_t(hex) >> 8) & 0xFF),
+        b(uint32_t(hex) & 0xFF) {}
+  uint8_t r;
+  uint8_t g;
+  uint8_t b;
+};
+
+namespace detail {
+
+// color is a struct of either a rgb color or a terminal color.
+struct color_type {
+  FMT_CONSTEXPR color_type() noexcept : is_rgb(), value{} {}
+  FMT_CONSTEXPR color_type(color rgb_color) noexcept : is_rgb(true), value{} {
+    value.rgb_color = static_cast<uint32_t>(rgb_color);
+  }
+  FMT_CONSTEXPR color_type(rgb rgb_color) noexcept : is_rgb(true), value{} {
+    value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16) |
+                      (static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
+  }
+  FMT_CONSTEXPR color_type(terminal_color term_color) noexcept
+      : is_rgb(), value{} {
+    value.term_color = static_cast<uint8_t>(term_color);
+  }
+  bool is_rgb;
+  union color_union {
+    uint8_t term_color;
+    uint32_t rgb_color;
+  } value;
+};
+}  // namespace detail
+
+/** A text style consisting of foreground and background colors and emphasis. */
+class text_style {
+ public:
+  FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
+      : set_foreground_color(), set_background_color(), ems(em) {}
+
+  FMT_CONSTEXPR auto operator|=(const text_style& rhs) -> text_style& {
+    if (!set_foreground_color) {
+      set_foreground_color = rhs.set_foreground_color;
+      foreground_color = rhs.foreground_color;
+    } else if (rhs.set_foreground_color) {
+      if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
+        FMT_THROW(format_error("can't OR a terminal color"));
+      foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
+    }
+
+    if (!set_background_color) {
+      set_background_color = rhs.set_background_color;
+      background_color = rhs.background_color;
+    } else if (rhs.set_background_color) {
+      if (!background_color.is_rgb || !rhs.background_color.is_rgb)
+        FMT_THROW(format_error("can't OR a terminal color"));
+      background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
+    }
+
+    ems = static_cast<emphasis>(static_cast<uint8_t>(ems) |
+                                static_cast<uint8_t>(rhs.ems));
+    return *this;
+  }
+
+  friend FMT_CONSTEXPR auto operator|(text_style lhs, const text_style& rhs)
+      -> text_style {
+    return lhs |= rhs;
+  }
+
+  FMT_CONSTEXPR auto has_foreground() const noexcept -> bool {
+    return set_foreground_color;
+  }
+  FMT_CONSTEXPR auto has_background() const noexcept -> bool {
+    return set_background_color;
+  }
+  FMT_CONSTEXPR auto has_emphasis() const noexcept -> bool {
+    return static_cast<uint8_t>(ems) != 0;
+  }
+  FMT_CONSTEXPR auto get_foreground() const noexcept -> detail::color_type {
+    FMT_ASSERT(has_foreground(), "no foreground specified for this style");
+    return foreground_color;
+  }
+  FMT_CONSTEXPR auto get_background() const noexcept -> detail::color_type {
+    FMT_ASSERT(has_background(), "no background specified for this style");
+    return background_color;
+  }
+  FMT_CONSTEXPR auto get_emphasis() const noexcept -> emphasis {
+    FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
+    return ems;
+  }
+
+ private:
+  FMT_CONSTEXPR text_style(bool is_foreground,
+                           detail::color_type text_color) noexcept
+      : set_foreground_color(), set_background_color(), ems() {
+    if (is_foreground) {
+      foreground_color = text_color;
+      set_foreground_color = true;
+    } else {
+      background_color = text_color;
+      set_background_color = true;
+    }
+  }
+
+  friend FMT_CONSTEXPR auto fg(detail::color_type foreground) noexcept
+      -> text_style;
+
+  friend FMT_CONSTEXPR auto bg(detail::color_type background) noexcept
+      -> text_style;
+
+  detail::color_type foreground_color;
+  detail::color_type background_color;
+  bool set_foreground_color;
+  bool set_background_color;
+  emphasis ems;
+};
+
+/** Creates a text style from the foreground (text) color. */
+FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept
+    -> text_style {
+  return text_style(true, foreground);
+}
+
+/** Creates a text style from the background color. */
+FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept
+    -> text_style {
+  return text_style(false, background);
+}
+
+FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept
+    -> text_style {
+  return text_style(lhs) | rhs;
+}
+
+namespace detail {
+
+template <typename Char> struct ansi_color_escape {
+  FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color,
+                                  const char* esc) noexcept {
+    // If we have a terminal color, we need to output another escape code
+    // sequence.
+    if (!text_color.is_rgb) {
+      bool is_background = esc == string_view("\x1b[48;2;");
+      uint32_t value = text_color.value.term_color;
+      // Background ASCII codes are the same as the foreground ones but with
+      // 10 more.
+      if (is_background) value += 10u;
+
+      size_t index = 0;
+      buffer[index++] = static_cast<Char>('\x1b');
+      buffer[index++] = static_cast<Char>('[');
+
+      if (value >= 100u) {
+        buffer[index++] = static_cast<Char>('1');
+        value %= 100u;
+      }
+      buffer[index++] = static_cast<Char>('0' + value / 10u);
+      buffer[index++] = static_cast<Char>('0' + value % 10u);
+
+      buffer[index++] = static_cast<Char>('m');
+      buffer[index++] = static_cast<Char>('\0');
+      return;
+    }
+
+    for (int i = 0; i < 7; i++) {
+      buffer[i] = static_cast<Char>(esc[i]);
+    }
+    rgb color(text_color.value.rgb_color);
+    to_esc(color.r, buffer + 7, ';');
+    to_esc(color.g, buffer + 11, ';');
+    to_esc(color.b, buffer + 15, 'm');
+    buffer[19] = static_cast<Char>(0);
+  }
+  FMT_CONSTEXPR ansi_color_escape(emphasis em) noexcept {
+    uint8_t em_codes[num_emphases] = {};
+    if (has_emphasis(em, emphasis::bold)) em_codes[0] = 1;
+    if (has_emphasis(em, emphasis::faint)) em_codes[1] = 2;
+    if (has_emphasis(em, emphasis::italic)) em_codes[2] = 3;
+    if (has_emphasis(em, emphasis::underline)) em_codes[3] = 4;
+    if (has_emphasis(em, emphasis::blink)) em_codes[4] = 5;
+    if (has_emphasis(em, emphasis::reverse)) em_codes[5] = 7;
+    if (has_emphasis(em, emphasis::conceal)) em_codes[6] = 8;
+    if (has_emphasis(em, emphasis::strikethrough)) em_codes[7] = 9;
+
+    size_t index = 0;
+    for (size_t i = 0; i < num_emphases; ++i) {
+      if (!em_codes[i]) continue;
+      buffer[index++] = static_cast<Char>('\x1b');
+      buffer[index++] = static_cast<Char>('[');
+      buffer[index++] = static_cast<Char>('0' + em_codes[i]);
+      buffer[index++] = static_cast<Char>('m');
+    }
+    buffer[index++] = static_cast<Char>(0);
+  }
+  FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; }
+
+  FMT_CONSTEXPR auto begin() const noexcept -> const Char* { return buffer; }
+  FMT_CONSTEXPR_CHAR_TRAITS auto end() const noexcept -> const Char* {
+    return buffer + std::char_traits<Char>::length(buffer);
+  }
+
+ private:
+  static constexpr size_t num_emphases = 8;
+  Char buffer[7u + 3u * num_emphases + 1u];
+
+  static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out,
+                                   char delimiter) noexcept {
+    out[0] = static_cast<Char>('0' + c / 100);
+    out[1] = static_cast<Char>('0' + c / 10 % 10);
+    out[2] = static_cast<Char>('0' + c % 10);
+    out[3] = static_cast<Char>(delimiter);
+  }
+  static FMT_CONSTEXPR auto has_emphasis(emphasis em, emphasis mask) noexcept
+      -> bool {
+    return static_cast<uint8_t>(em) & static_cast<uint8_t>(mask);
+  }
+};
+
+template <typename Char>
+FMT_CONSTEXPR auto make_foreground_color(detail::color_type foreground) noexcept
+    -> ansi_color_escape<Char> {
+  return ansi_color_escape<Char>(foreground, "\x1b[38;2;");
+}
+
+template <typename Char>
+FMT_CONSTEXPR auto make_background_color(detail::color_type background) noexcept
+    -> ansi_color_escape<Char> {
+  return ansi_color_escape<Char>(background, "\x1b[48;2;");
+}
+
+template <typename Char>
+FMT_CONSTEXPR auto make_emphasis(emphasis em) noexcept
+    -> ansi_color_escape<Char> {
+  return ansi_color_escape<Char>(em);
+}
+
+template <typename Char> inline void reset_color(buffer<Char>& buffer) {
+  auto reset_color = string_view("\x1b[0m");
+  buffer.append(reset_color.begin(), reset_color.end());
+}
+
+template <typename T> struct styled_arg : detail::view {
+  const T& value;
+  text_style style;
+  styled_arg(const T& v, text_style s) : value(v), style(s) {}
+};
+
+template <typename Char>
+void vformat_to(buffer<Char>& buf, const text_style& ts,
+                basic_string_view<Char> format_str,
+                basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+  bool has_style = false;
+  if (ts.has_emphasis()) {
+    has_style = true;
+    auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
+    buf.append(emphasis.begin(), emphasis.end());
+  }
+  if (ts.has_foreground()) {
+    has_style = true;
+    auto foreground = detail::make_foreground_color<Char>(ts.get_foreground());
+    buf.append(foreground.begin(), foreground.end());
+  }
+  if (ts.has_background()) {
+    has_style = true;
+    auto background = detail::make_background_color<Char>(ts.get_background());
+    buf.append(background.begin(), background.end());
+  }
+  detail::vformat_to(buf, format_str, args, {});
+  if (has_style) detail::reset_color<Char>(buf);
+}
+
+}  // namespace detail
+
+inline void vprint(std::FILE* f, const text_style& ts, string_view fmt,
+                   format_args args) {
+  // Legacy wide streams are not supported.
+  auto buf = memory_buffer();
+  detail::vformat_to(buf, ts, fmt, args);
+  if (detail::is_utf8()) {
+    detail::print(f, string_view(buf.begin(), buf.size()));
+    return;
+  }
+  buf.push_back('\0');
+  int result = std::fputs(buf.data(), f);
+  if (result < 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
+}
+
+/**
+  \rst
+  Formats a string and prints it to the specified file stream using ANSI
+  escape sequences to specify text formatting.
+
+  **Example**::
+
+    fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
+               "Elapsed time: {0:.2f} seconds", 1.23);
+  \endrst
+ */
+template <typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_string<S>::value)>
+void print(std::FILE* f, const text_style& ts, const S& format_str,
+           const Args&... args) {
+  vprint(f, ts, format_str,
+         fmt::make_format_args<buffer_context<char_t<S>>>(args...));
+}
+
+/**
+  \rst
+  Formats a string and prints it to stdout using ANSI escape sequences to
+  specify text formatting.
+
+  **Example**::
+
+    fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
+               "Elapsed time: {0:.2f} seconds", 1.23);
+  \endrst
+ */
+template <typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_string<S>::value)>
+void print(const text_style& ts, const S& format_str, const Args&... args) {
+  return print(stdout, ts, format_str, args...);
+}
+
+template <typename S, typename Char = char_t<S>>
+inline auto vformat(
+    const text_style& ts, const S& format_str,
+    basic_format_args<buffer_context<type_identity_t<Char>>> args)
+    -> std::basic_string<Char> {
+  basic_memory_buffer<Char> buf;
+  detail::vformat_to(buf, ts, detail::to_string_view(format_str), args);
+  return fmt::to_string(buf);
+}
+
+/**
+  \rst
+  Formats arguments and returns the result as a string using ANSI
+  escape sequences to specify text formatting.
+
+  **Example**::
+
+    #include <fmt/color.h>
+    std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
+                                      "The answer is {}", 42);
+  \endrst
+*/
+template <typename S, typename... Args, typename Char = char_t<S>>
+inline auto format(const text_style& ts, const S& format_str,
+                   const Args&... args) -> std::basic_string<Char> {
+  return fmt::vformat(ts, detail::to_string_view(format_str),
+                      fmt::make_format_args<buffer_context<Char>>(args...));
+}
+
+/**
+  Formats a string with the given text_style and writes the output to ``out``.
+ */
+template <typename OutputIt, typename Char,
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)>
+auto vformat_to(OutputIt out, const text_style& ts,
+                basic_string_view<Char> format_str,
+                basic_format_args<buffer_context<type_identity_t<Char>>> args)
+    -> OutputIt {
+  auto&& buf = detail::get_buffer<Char>(out);
+  detail::vformat_to(buf, ts, format_str, args);
+  return detail::get_iterator(buf, out);
+}
+
+/**
+  \rst
+  Formats arguments with the given text_style, writes the result to the output
+  iterator ``out`` and returns the iterator past the end of the output range.
+
+  **Example**::
+
+    std::vector<char> out;
+    fmt::format_to(std::back_inserter(out),
+                   fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
+  \endrst
+*/
+template <
+    typename OutputIt, typename S, typename... Args,
+    bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value &&
+                  detail::is_string<S>::value>
+inline auto format_to(OutputIt out, const text_style& ts, const S& format_str,
+                      Args&&... args) ->
+    typename std::enable_if<enable, OutputIt>::type {
+  return vformat_to(out, ts, detail::to_string_view(format_str),
+                    fmt::make_format_args<buffer_context<char_t<S>>>(args...));
+}
+
+template <typename T, typename Char>
+struct formatter<detail::styled_arg<T>, Char> : formatter<T, Char> {
+  template <typename FormatContext>
+  auto format(const detail::styled_arg<T>& arg, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    const auto& ts = arg.style;
+    const auto& value = arg.value;
+    auto out = ctx.out();
+
+    bool has_style = false;
+    if (ts.has_emphasis()) {
+      has_style = true;
+      auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
+      out = std::copy(emphasis.begin(), emphasis.end(), out);
+    }
+    if (ts.has_foreground()) {
+      has_style = true;
+      auto foreground =
+          detail::make_foreground_color<Char>(ts.get_foreground());
+      out = std::copy(foreground.begin(), foreground.end(), out);
+    }
+    if (ts.has_background()) {
+      has_style = true;
+      auto background =
+          detail::make_background_color<Char>(ts.get_background());
+      out = std::copy(background.begin(), background.end(), out);
+    }
+    out = formatter<T, Char>::format(value, ctx);
+    if (has_style) {
+      auto reset_color = string_view("\x1b[0m");
+      out = std::copy(reset_color.begin(), reset_color.end(), out);
+    }
+    return out;
+  }
+};
+
+/**
+  \rst
+  Returns an argument that will be formatted using ANSI escape sequences,
+  to be used in a formatting function.
+
+  **Example**::
+
+    fmt::print("Elapsed time: {0:.2f} seconds",
+               fmt::styled(1.23, fmt::fg(fmt::color::green) |
+                                 fmt::bg(fmt::color::blue)));
+  \endrst
+ */
+template <typename T>
+FMT_CONSTEXPR auto styled(const T& value, text_style ts)
+    -> detail::styled_arg<remove_cvref_t<T>> {
+  return detail::styled_arg<remove_cvref_t<T>>{value, ts};
+}
+
+FMT_END_EXPORT
+FMT_END_NAMESPACE
+
+#endif  // FMT_COLOR_H_

dep/fmt/include/fmt/compile.h

@@ -0,0 +1,535 @@
+// Formatting library for C++ - experimental format string compilation
+//
+// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_COMPILE_H_
+#define FMT_COMPILE_H_
+
+#include "format.h"
+
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template <typename Char, typename InputIt>
+FMT_CONSTEXPR inline auto copy_str(InputIt begin, InputIt end,
+                                   counting_iterator it) -> counting_iterator {
+  return it + (end - begin);
+}
+
+// A compile-time string which is compiled into fast formatting code.
+class compiled_string {};
+
+template <typename S>
+struct is_compiled_string : std::is_base_of<compiled_string, S> {};
+
+/**
+  \rst
+  Converts a string literal *s* into a format string that will be parsed at
+  compile time and converted into efficient formatting code. Requires C++17
+  ``constexpr if`` compiler support.
+
+  **Example**::
+
+    // Converts 42 into std::string using the most efficient method and no
+    // runtime format string processing.
+    std::string s = fmt::format(FMT_COMPILE("{}"), 42);
+  \endrst
+ */
+#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
+#  define FMT_COMPILE(s) \
+    FMT_STRING_IMPL(s, fmt::detail::compiled_string, explicit)
+#else
+#  define FMT_COMPILE(s) FMT_STRING(s)
+#endif
+
+#if FMT_USE_NONTYPE_TEMPLATE_ARGS
+template <typename Char, size_t N,
+          fmt::detail_exported::fixed_string<Char, N> Str>
+struct udl_compiled_string : compiled_string {
+  using char_type = Char;
+  explicit constexpr operator basic_string_view<char_type>() const {
+    return {Str.data, N - 1};
+  }
+};
+#endif
+
+template <typename T, typename... Tail>
+auto first(const T& value, const Tail&...) -> const T& {
+  return value;
+}
+
+#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
+template <typename... Args> struct type_list {};
+
+// Returns a reference to the argument at index N from [first, rest...].
+template <int N, typename T, typename... Args>
+constexpr const auto& get([[maybe_unused]] const T& first,
+                          [[maybe_unused]] const Args&... rest) {
+  static_assert(N < 1 + sizeof...(Args), "index is out of bounds");
+  if constexpr (N == 0)
+    return first;
+  else
+    return detail::get<N - 1>(rest...);
+}
+
+template <typename Char, typename... Args>
+constexpr int get_arg_index_by_name(basic_string_view<Char> name,
+                                    type_list<Args...>) {
+  return get_arg_index_by_name<Args...>(name);
+}
+
+template <int N, typename> struct get_type_impl;
+
+template <int N, typename... Args> struct get_type_impl<N, type_list<Args...>> {
+  using type =
+      remove_cvref_t<decltype(detail::get<N>(std::declval<Args>()...))>;
+};
+
+template <int N, typename T>
+using get_type = typename get_type_impl<N, T>::type;
+
+template <typename T> struct is_compiled_format : std::false_type {};
+
+template <typename Char> struct text {
+  basic_string_view<Char> data;
+  using char_type = Char;
+
+  template <typename OutputIt, typename... Args>
+  constexpr OutputIt format(OutputIt out, const Args&...) const {
+    return write<Char>(out, data);
+  }
+};
+
+template <typename Char>
+struct is_compiled_format<text<Char>> : std::true_type {};
+
+template <typename Char>
+constexpr text<Char> make_text(basic_string_view<Char> s, size_t pos,
+                               size_t size) {
+  return {{&s[pos], size}};
+}
+
+template <typename Char> struct code_unit {
+  Char value;
+  using char_type = Char;
+
+  template <typename OutputIt, typename... Args>
+  constexpr OutputIt format(OutputIt out, const Args&...) const {
+    *out++ = value;
+    return out;
+  }
+};
+
+// This ensures that the argument type is convertible to `const T&`.
+template <typename T, int N, typename... Args>
+constexpr const T& get_arg_checked(const Args&... args) {
+  const auto& arg = detail::get<N>(args...);
+  if constexpr (detail::is_named_arg<remove_cvref_t<decltype(arg)>>()) {
+    return arg.value;
+  } else {
+    return arg;
+  }
+}
+
+template <typename Char>
+struct is_compiled_format<code_unit<Char>> : std::true_type {};
+
+// A replacement field that refers to argument N.
+template <typename Char, typename T, int N> struct field {
+  using char_type = Char;
+
+  template <typename OutputIt, typename... Args>
+  constexpr OutputIt format(OutputIt out, const Args&... args) const {
+    const T& arg = get_arg_checked<T, N>(args...);
+    if constexpr (std::is_convertible_v<T, basic_string_view<Char>>) {
+      auto s = basic_string_view<Char>(arg);
+      return copy_str<Char>(s.begin(), s.end(), out);
+    }
+    return write<Char>(out, arg);
+  }
+};
+
+template <typename Char, typename T, int N>
+struct is_compiled_format<field<Char, T, N>> : std::true_type {};
+
+// A replacement field that refers to argument with name.
+template <typename Char> struct runtime_named_field {
+  using char_type = Char;
+  basic_string_view<Char> name;
+
+  template <typename OutputIt, typename T>
+  constexpr static bool try_format_argument(
+      OutputIt& out,
+      // [[maybe_unused]] due to unused-but-set-parameter warning in GCC 7,8,9
+      [[maybe_unused]] basic_string_view<Char> arg_name, const T& arg) {
+    if constexpr (is_named_arg<typename std::remove_cv<T>::type>::value) {
+      if (arg_name == arg.name) {
+        out = write<Char>(out, arg.value);
+        return true;
+      }
+    }
+    return false;
+  }
+
+  template <typename OutputIt, typename... Args>
+  constexpr OutputIt format(OutputIt out, const Args&... args) const {
+    bool found = (try_format_argument(out, name, args) || ...);
+    if (!found) {
+      FMT_THROW(format_error("argument with specified name is not found"));
+    }
+    return out;
+  }
+};
+
+template <typename Char>
+struct is_compiled_format<runtime_named_field<Char>> : std::true_type {};
+
+// A replacement field that refers to argument N and has format specifiers.
+template <typename Char, typename T, int N> struct spec_field {
+  using char_type = Char;
+  formatter<T, Char> fmt;
+
+  template <typename OutputIt, typename... Args>
+  constexpr FMT_INLINE OutputIt format(OutputIt out,
+                                       const Args&... args) const {
+    const auto& vargs =
+        fmt::make_format_args<basic_format_context<OutputIt, Char>>(args...);
+    basic_format_context<OutputIt, Char> ctx(out, vargs);
+    return fmt.format(get_arg_checked<T, N>(args...), ctx);
+  }
+};
+
+template <typename Char, typename T, int N>
+struct is_compiled_format<spec_field<Char, T, N>> : std::true_type {};
+
+template <typename L, typename R> struct concat {
+  L lhs;
+  R rhs;
+  using char_type = typename L::char_type;
+
+  template <typename OutputIt, typename... Args>
+  constexpr OutputIt format(OutputIt out, const Args&... args) const {
+    out = lhs.format(out, args...);
+    return rhs.format(out, args...);
+  }
+};
+
+template <typename L, typename R>
+struct is_compiled_format<concat<L, R>> : std::true_type {};
+
+template <typename L, typename R>
+constexpr concat<L, R> make_concat(L lhs, R rhs) {
+  return {lhs, rhs};
+}
+
+struct unknown_format {};
+
+template <typename Char>
+constexpr size_t parse_text(basic_string_view<Char> str, size_t pos) {
+  for (size_t size = str.size(); pos != size; ++pos) {
+    if (str[pos] == '{' || str[pos] == '}') break;
+  }
+  return pos;
+}
+
+template <typename Args, size_t POS, int ID, typename S>
+constexpr auto compile_format_string(S format_str);
+
+template <typename Args, size_t POS, int ID, typename T, typename S>
+constexpr auto parse_tail(T head, S format_str) {
+  if constexpr (POS !=
+                basic_string_view<typename S::char_type>(format_str).size()) {
+    constexpr auto tail = compile_format_string<Args, POS, ID>(format_str);
+    if constexpr (std::is_same<remove_cvref_t<decltype(tail)>,
+                               unknown_format>())
+      return tail;
+    else
+      return make_concat(head, tail);
+  } else {
+    return head;
+  }
+}
+
+template <typename T, typename Char> struct parse_specs_result {
+  formatter<T, Char> fmt;
+  size_t end;
+  int next_arg_id;
+};
+
+enum { manual_indexing_id = -1 };
+
+template <typename T, typename Char>
+constexpr parse_specs_result<T, Char> parse_specs(basic_string_view<Char> str,
+                                                  size_t pos, int next_arg_id) {
+  str.remove_prefix(pos);
+  auto ctx =
+      compile_parse_context<Char>(str, max_value<int>(), nullptr, next_arg_id);
+  auto f = formatter<T, Char>();
+  auto end = f.parse(ctx);
+  return {f, pos + fmt::detail::to_unsigned(end - str.data()),
+          next_arg_id == 0 ? manual_indexing_id : ctx.next_arg_id()};
+}
+
+template <typename Char> struct arg_id_handler {
+  arg_ref<Char> arg_id;
+
+  constexpr int on_auto() {
+    FMT_ASSERT(false, "handler cannot be used with automatic indexing");
+    return 0;
+  }
+  constexpr int on_index(int id) {
+    arg_id = arg_ref<Char>(id);
+    return 0;
+  }
+  constexpr int on_name(basic_string_view<Char> id) {
+    arg_id = arg_ref<Char>(id);
+    return 0;
+  }
+};
+
+template <typename Char> struct parse_arg_id_result {
+  arg_ref<Char> arg_id;
+  const Char* arg_id_end;
+};
+
+template <int ID, typename Char>
+constexpr auto parse_arg_id(const Char* begin, const Char* end) {
+  auto handler = arg_id_handler<Char>{arg_ref<Char>{}};
+  auto arg_id_end = parse_arg_id(begin, end, handler);
+  return parse_arg_id_result<Char>{handler.arg_id, arg_id_end};
+}
+
+template <typename T, typename Enable = void> struct field_type {
+  using type = remove_cvref_t<T>;
+};
+
+template <typename T>
+struct field_type<T, enable_if_t<detail::is_named_arg<T>::value>> {
+  using type = remove_cvref_t<decltype(T::value)>;
+};
+
+template <typename T, typename Args, size_t END_POS, int ARG_INDEX, int NEXT_ID,
+          typename S>
+constexpr auto parse_replacement_field_then_tail(S format_str) {
+  using char_type = typename S::char_type;
+  constexpr auto str = basic_string_view<char_type>(format_str);
+  constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type();
+  if constexpr (c == '}') {
+    return parse_tail<Args, END_POS + 1, NEXT_ID>(
+        field<char_type, typename field_type<T>::type, ARG_INDEX>(),
+        format_str);
+  } else if constexpr (c != ':') {
+    FMT_THROW(format_error("expected ':'"));
+  } else {
+    constexpr auto result = parse_specs<typename field_type<T>::type>(
+        str, END_POS + 1, NEXT_ID == manual_indexing_id ? 0 : NEXT_ID);
+    if constexpr (result.end >= str.size() || str[result.end] != '}') {
+      FMT_THROW(format_error("expected '}'"));
+      return 0;
+    } else {
+      return parse_tail<Args, result.end + 1, result.next_arg_id>(
+          spec_field<char_type, typename field_type<T>::type, ARG_INDEX>{
+              result.fmt},
+          format_str);
+    }
+  }
+}
+
+// Compiles a non-empty format string and returns the compiled representation
+// or unknown_format() on unrecognized input.
+template <typename Args, size_t POS, int ID, typename S>
+constexpr auto compile_format_string(S format_str) {
+  using char_type = typename S::char_type;
+  constexpr auto str = basic_string_view<char_type>(format_str);
+  if constexpr (str[POS] == '{') {
+    if constexpr (POS + 1 == str.size())
+      FMT_THROW(format_error("unmatched '{' in format string"));
+    if constexpr (str[POS + 1] == '{') {
+      return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
+    } else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') {
+      static_assert(ID != manual_indexing_id,
+                    "cannot switch from manual to automatic argument indexing");
+      constexpr auto next_id =
+          ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
+      return parse_replacement_field_then_tail<get_type<ID, Args>, Args,
+                                               POS + 1, ID, next_id>(
+          format_str);
+    } else {
+      constexpr auto arg_id_result =
+          parse_arg_id<ID>(str.data() + POS + 1, str.data() + str.size());
+      constexpr auto arg_id_end_pos = arg_id_result.arg_id_end - str.data();
+      constexpr char_type c =
+          arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type();
+      static_assert(c == '}' || c == ':', "missing '}' in format string");
+      if constexpr (arg_id_result.arg_id.kind == arg_id_kind::index) {
+        static_assert(
+            ID == manual_indexing_id || ID == 0,
+            "cannot switch from automatic to manual argument indexing");
+        constexpr auto arg_index = arg_id_result.arg_id.val.index;
+        return parse_replacement_field_then_tail<get_type<arg_index, Args>,
+                                                 Args, arg_id_end_pos,
+                                                 arg_index, manual_indexing_id>(
+            format_str);
+      } else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) {
+        constexpr auto arg_index =
+            get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{});
+        if constexpr (arg_index >= 0) {
+          constexpr auto next_id =
+              ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
+          return parse_replacement_field_then_tail<
+              decltype(get_type<arg_index, Args>::value), Args, arg_id_end_pos,
+              arg_index, next_id>(format_str);
+        } else if constexpr (c == '}') {
+          return parse_tail<Args, arg_id_end_pos + 1, ID>(
+              runtime_named_field<char_type>{arg_id_result.arg_id.val.name},
+              format_str);
+        } else if constexpr (c == ':') {
+          return unknown_format();  // no type info for specs parsing
+        }
+      }
+    }
+  } else if constexpr (str[POS] == '}') {
+    if constexpr (POS + 1 == str.size())
+      FMT_THROW(format_error("unmatched '}' in format string"));
+    return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
+  } else {
+    constexpr auto end = parse_text(str, POS + 1);
+    if constexpr (end - POS > 1) {
+      return parse_tail<Args, end, ID>(make_text(str, POS, end - POS),
+                                       format_str);
+    } else {
+      return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]},
+                                       format_str);
+    }
+  }
+}
+
+template <typename... Args, typename S,
+          FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+constexpr auto compile(S format_str) {
+  constexpr auto str = basic_string_view<typename S::char_type>(format_str);
+  if constexpr (str.size() == 0) {
+    return detail::make_text(str, 0, 0);
+  } else {
+    constexpr auto result =
+        detail::compile_format_string<detail::type_list<Args...>, 0, 0>(
+            format_str);
+    return result;
+  }
+}
+#endif  // defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
+}  // namespace detail
+
+FMT_BEGIN_EXPORT
+
+#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
+
+template <typename CompiledFormat, typename... Args,
+          typename Char = typename CompiledFormat::char_type,
+          FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)>
+FMT_INLINE std::basic_string<Char> format(const CompiledFormat& cf,
+                                          const Args&... args) {
+  auto s = std::basic_string<Char>();
+  cf.format(std::back_inserter(s), args...);
+  return s;
+}
+
+template <typename OutputIt, typename CompiledFormat, typename... Args,
+          FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)>
+constexpr FMT_INLINE OutputIt format_to(OutputIt out, const CompiledFormat& cf,
+                                        const Args&... args) {
+  return cf.format(out, args...);
+}
+
+template <typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+FMT_INLINE std::basic_string<typename S::char_type> format(const S&,
+                                                           Args&&... args) {
+  if constexpr (std::is_same<typename S::char_type, char>::value) {
+    constexpr auto str = basic_string_view<typename S::char_type>(S());
+    if constexpr (str.size() == 2 && str[0] == '{' && str[1] == '}') {
+      const auto& first = detail::first(args...);
+      if constexpr (detail::is_named_arg<
+                        remove_cvref_t<decltype(first)>>::value) {
+        return fmt::to_string(first.value);
+      } else {
+        return fmt::to_string(first);
+      }
+    }
+  }
+  constexpr auto compiled = detail::compile<Args...>(S());
+  if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>,
+                             detail::unknown_format>()) {
+    return fmt::format(
+        static_cast<basic_string_view<typename S::char_type>>(S()),
+        std::forward<Args>(args)...);
+  } else {
+    return fmt::format(compiled, std::forward<Args>(args)...);
+  }
+}
+
+template <typename OutputIt, typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) {
+  constexpr auto compiled = detail::compile<Args...>(S());
+  if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>,
+                             detail::unknown_format>()) {
+    return fmt::format_to(
+        out, static_cast<basic_string_view<typename S::char_type>>(S()),
+        std::forward<Args>(args)...);
+  } else {
+    return fmt::format_to(out, compiled, std::forward<Args>(args)...);
+  }
+}
+#endif
+
+template <typename OutputIt, typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+auto format_to_n(OutputIt out, size_t n, const S& format_str, Args&&... args)
+    -> format_to_n_result<OutputIt> {
+  using traits = detail::fixed_buffer_traits;
+  auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
+  fmt::format_to(std::back_inserter(buf), format_str,
+                 std::forward<Args>(args)...);
+  return {buf.out(), buf.count()};
+}
+
+template <typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+FMT_CONSTEXPR20 auto formatted_size(const S& format_str, const Args&... args)
+    -> size_t {
+  return fmt::format_to(detail::counting_iterator(), format_str, args...)
+      .count();
+}
+
+template <typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+void print(std::FILE* f, const S& format_str, const Args&... args) {
+  memory_buffer buffer;
+  fmt::format_to(std::back_inserter(buffer), format_str, args...);
+  detail::print(f, {buffer.data(), buffer.size()});
+}
+
+template <typename S, typename... Args,
+          FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+void print(const S& format_str, const Args&... args) {
+  print(stdout, format_str, args...);
+}
+
+#if FMT_USE_NONTYPE_TEMPLATE_ARGS
+inline namespace literals {
+template <detail_exported::fixed_string Str> constexpr auto operator""_cf() {
+  using char_t = remove_cvref_t<decltype(Str.data[0])>;
+  return detail::udl_compiled_string<char_t, sizeof(Str.data) / sizeof(char_t),
+                                     Str>();
+}
+}  // namespace literals
+#endif
+
+FMT_END_EXPORT
+FMT_END_NAMESPACE
+
+#endif  // FMT_COMPILE_H_

dep/fmt/include/fmt/os.h

@@ -0,0 +1,455 @@
+// Formatting library for C++ - optional OS-specific functionality
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_OS_H_
+#define FMT_OS_H_
+
+#include <cerrno>
+#include <cstddef>
+#include <cstdio>
+#include <system_error>  // std::system_error
+
+#include "format.h"
+
+#if defined __APPLE__ || defined(__FreeBSD__)
+#  if FMT_HAS_INCLUDE(<xlocale.h>)
+#    include <xlocale.h>  // for LC_NUMERIC_MASK on OS X
+#  endif
+#endif
+
+#ifndef FMT_USE_FCNTL
+// UWP doesn't provide _pipe.
+#  if FMT_HAS_INCLUDE("winapifamily.h")
+#    include <winapifamily.h>
+#  endif
+#  if (FMT_HAS_INCLUDE(<fcntl.h>) || defined(__APPLE__) || \
+       defined(__linux__)) &&                              \
+      (!defined(WINAPI_FAMILY) ||                          \
+       (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP))
+#    include <fcntl.h>  // for O_RDONLY
+#    define FMT_USE_FCNTL 1
+#  else
+#    define FMT_USE_FCNTL 0
+#  endif
+#endif
+
+#ifndef FMT_POSIX
+#  if defined(_WIN32) && !defined(__MINGW32__)
+// Fix warnings about deprecated symbols.
+#    define FMT_POSIX(call) _##call
+#  else
+#    define FMT_POSIX(call) call
+#  endif
+#endif
+
+// Calls to system functions are wrapped in FMT_SYSTEM for testability.
+#ifdef FMT_SYSTEM
+#  define FMT_HAS_SYSTEM
+#  define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
+#else
+#  define FMT_SYSTEM(call) ::call
+#  ifdef _WIN32
+// Fix warnings about deprecated symbols.
+#    define FMT_POSIX_CALL(call) ::_##call
+#  else
+#    define FMT_POSIX_CALL(call) ::call
+#  endif
+#endif
+
+// Retries the expression while it evaluates to error_result and errno
+// equals to EINTR.
+#ifndef _WIN32
+#  define FMT_RETRY_VAL(result, expression, error_result) \
+    do {                                                  \
+      (result) = (expression);                            \
+    } while ((result) == (error_result) && errno == EINTR)
+#else
+#  define FMT_RETRY_VAL(result, expression, error_result) result = (expression)
+#endif
+
+#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
+
+FMT_BEGIN_NAMESPACE
+FMT_BEGIN_EXPORT
+
+/**
+  \rst
+  A reference to a null-terminated string. It can be constructed from a C
+  string or ``std::string``.
+
+  You can use one of the following type aliases for common character types:
+
+  +---------------+-----------------------------+
+  | Type          | Definition                  |
+  +===============+=============================+
+  | cstring_view  | basic_cstring_view<char>    |
+  +---------------+-----------------------------+
+  | wcstring_view | basic_cstring_view<wchar_t> |
+  +---------------+-----------------------------+
+
+  This class is most useful as a parameter type to allow passing
+  different types of strings to a function, for example::
+
+    template <typename... Args>
+    std::string format(cstring_view format_str, const Args & ... args);
+
+    format("{}", 42);
+    format(std::string("{}"), 42);
+  \endrst
+ */
+template <typename Char> class basic_cstring_view {
+ private:
+  const Char* data_;
+
+ public:
+  /** Constructs a string reference object from a C string. */
+  basic_cstring_view(const Char* s) : data_(s) {}
+
+  /**
+    \rst
+    Constructs a string reference from an ``std::string`` object.
+    \endrst
+   */
+  basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {}
+
+  /** Returns the pointer to a C string. */
+  auto c_str() const -> const Char* { return data_; }
+};
+
+using cstring_view = basic_cstring_view<char>;
+using wcstring_view = basic_cstring_view<wchar_t>;
+
+#ifdef _WIN32
+FMT_API const std::error_category& system_category() noexcept;
+
+namespace detail {
+FMT_API void format_windows_error(buffer<char>& out, int error_code,
+                                  const char* message) noexcept;
+}
+
+FMT_API std::system_error vwindows_error(int error_code, string_view format_str,
+                                         format_args args);
+
+/**
+ \rst
+ Constructs a :class:`std::system_error` object with the description
+ of the form
+
+ .. parsed-literal::
+   *<message>*: *<system-message>*
+
+ where *<message>* is the formatted message and *<system-message>* is the
+ system message corresponding to the error code.
+ *error_code* is a Windows error code as given by ``GetLastError``.
+ If *error_code* is not a valid error code such as -1, the system message
+ will look like "error -1".
+
+ **Example**::
+
+   // This throws a system_error with the description
+   //   cannot open file 'madeup': The system cannot find the file specified.
+   // or similar (system message may vary).
+   const char *filename = "madeup";
+   LPOFSTRUCT of = LPOFSTRUCT();
+   HFILE file = OpenFile(filename, &of, OF_READ);
+   if (file == HFILE_ERROR) {
+     throw fmt::windows_error(GetLastError(),
+                              "cannot open file '{}'", filename);
+   }
+ \endrst
+*/
+template <typename... Args>
+std::system_error windows_error(int error_code, string_view message,
+                                const Args&... args) {
+  return vwindows_error(error_code, message, fmt::make_format_args(args...));
+}
+
+// Reports a Windows error without throwing an exception.
+// Can be used to report errors from destructors.
+FMT_API void report_windows_error(int error_code, const char* message) noexcept;
+#else
+inline auto system_category() noexcept -> const std::error_category& {
+  return std::system_category();
+}
+#endif  // _WIN32
+
+// std::system is not available on some platforms such as iOS (#2248).
+#ifdef __OSX__
+template <typename S, typename... Args, typename Char = char_t<S>>
+void say(const S& format_str, Args&&... args) {
+  std::system(format("say \"{}\"", format(format_str, args...)).c_str());
+}
+#endif
+
+// A buffered file.
+class buffered_file {
+ private:
+  FILE* file_;
+
+  friend class file;
+
+  explicit buffered_file(FILE* f) : file_(f) {}
+
+ public:
+  buffered_file(const buffered_file&) = delete;
+  void operator=(const buffered_file&) = delete;
+
+  // Constructs a buffered_file object which doesn't represent any file.
+  buffered_file() noexcept : file_(nullptr) {}
+
+  // Destroys the object closing the file it represents if any.
+  FMT_API ~buffered_file() noexcept;
+
+ public:
+  buffered_file(buffered_file&& other) noexcept : file_(other.file_) {
+    other.file_ = nullptr;
+  }
+
+  auto operator=(buffered_file&& other) -> buffered_file& {
+    close();
+    file_ = other.file_;
+    other.file_ = nullptr;
+    return *this;
+  }
+
+  // Opens a file.
+  FMT_API buffered_file(cstring_view filename, cstring_view mode);
+
+  // Closes the file.
+  FMT_API void close();
+
+  // Returns the pointer to a FILE object representing this file.
+  auto get() const noexcept -> FILE* { return file_; }
+
+  FMT_API auto descriptor() const -> int;
+
+  void vprint(string_view format_str, format_args args) {
+    fmt::vprint(file_, format_str, args);
+  }
+
+  template <typename... Args>
+  inline void print(string_view format_str, const Args&... args) {
+    vprint(format_str, fmt::make_format_args(args...));
+  }
+};
+
+#if FMT_USE_FCNTL
+// A file. Closed file is represented by a file object with descriptor -1.
+// Methods that are not declared with noexcept may throw
+// fmt::system_error in case of failure. Note that some errors such as
+// closing the file multiple times will cause a crash on Windows rather
+// than an exception. You can get standard behavior by overriding the
+// invalid parameter handler with _set_invalid_parameter_handler.
+class FMT_API file {
+ private:
+  int fd_;  // File descriptor.
+
+  // Constructs a file object with a given descriptor.
+  explicit file(int fd) : fd_(fd) {}
+
+ public:
+  // Possible values for the oflag argument to the constructor.
+  enum {
+    RDONLY = FMT_POSIX(O_RDONLY),  // Open for reading only.
+    WRONLY = FMT_POSIX(O_WRONLY),  // Open for writing only.
+    RDWR = FMT_POSIX(O_RDWR),      // Open for reading and writing.
+    CREATE = FMT_POSIX(O_CREAT),   // Create if the file doesn't exist.
+    APPEND = FMT_POSIX(O_APPEND),  // Open in append mode.
+    TRUNC = FMT_POSIX(O_TRUNC)     // Truncate the content of the file.
+  };
+
+  // Constructs a file object which doesn't represent any file.
+  file() noexcept : fd_(-1) {}
+
+  // Opens a file and constructs a file object representing this file.
+  file(cstring_view path, int oflag);
+
+ public:
+  file(const file&) = delete;
+  void operator=(const file&) = delete;
+
+  file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; }
+
+  // Move assignment is not noexcept because close may throw.
+  auto operator=(file&& other) -> file& {
+    close();
+    fd_ = other.fd_;
+    other.fd_ = -1;
+    return *this;
+  }
+
+  // Destroys the object closing the file it represents if any.
+  ~file() noexcept;
+
+  // Returns the file descriptor.
+  auto descriptor() const noexcept -> int { return fd_; }
+
+  // Closes the file.
+  void close();
+
+  // Returns the file size. The size has signed type for consistency with
+  // stat::st_size.
+  auto size() const -> long long;
+
+  // Attempts to read count bytes from the file into the specified buffer.
+  auto read(void* buffer, size_t count) -> size_t;
+
+  // Attempts to write count bytes from the specified buffer to the file.
+  auto write(const void* buffer, size_t count) -> size_t;
+
+  // Duplicates a file descriptor with the dup function and returns
+  // the duplicate as a file object.
+  static auto dup(int fd) -> file;
+
+  // Makes fd be the copy of this file descriptor, closing fd first if
+  // necessary.
+  void dup2(int fd);
+
+  // Makes fd be the copy of this file descriptor, closing fd first if
+  // necessary.
+  void dup2(int fd, std::error_code& ec) noexcept;
+
+  // Creates a pipe setting up read_end and write_end file objects for reading
+  // and writing respectively.
+  // DEPRECATED! Taking files as out parameters is deprecated.
+  static void pipe(file& read_end, file& write_end);
+
+  // Creates a buffered_file object associated with this file and detaches
+  // this file object from the file.
+  auto fdopen(const char* mode) -> buffered_file;
+
+#  if defined(_WIN32) && !defined(__MINGW32__)
+  // Opens a file and constructs a file object representing this file by
+  // wcstring_view filename. Windows only.
+  static file open_windows_file(wcstring_view path, int oflag);
+#  endif
+};
+
+// Returns the memory page size.
+auto getpagesize() -> long;
+
+namespace detail {
+
+struct buffer_size {
+  buffer_size() = default;
+  size_t value = 0;
+  auto operator=(size_t val) const -> buffer_size {
+    auto bs = buffer_size();
+    bs.value = val;
+    return bs;
+  }
+};
+
+struct ostream_params {
+  int oflag = file::WRONLY | file::CREATE | file::TRUNC;
+  size_t buffer_size = BUFSIZ > 32768 ? BUFSIZ : 32768;
+
+  ostream_params() {}
+
+  template <typename... T>
+  ostream_params(T... params, int new_oflag) : ostream_params(params...) {
+    oflag = new_oflag;
+  }
+
+  template <typename... T>
+  ostream_params(T... params, detail::buffer_size bs)
+      : ostream_params(params...) {
+    this->buffer_size = bs.value;
+  }
+
+// Intel has a bug that results in failure to deduce a constructor
+// for empty parameter packs.
+#  if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 2000
+  ostream_params(int new_oflag) : oflag(new_oflag) {}
+  ostream_params(detail::buffer_size bs) : buffer_size(bs.value) {}
+#  endif
+};
+
+class file_buffer final : public buffer<char> {
+  file file_;
+
+  FMT_API void grow(size_t) override;
+
+ public:
+  FMT_API file_buffer(cstring_view path, const ostream_params& params);
+  FMT_API file_buffer(file_buffer&& other);
+  FMT_API ~file_buffer();
+
+  void flush() {
+    if (size() == 0) return;
+    file_.write(data(), size() * sizeof(data()[0]));
+    clear();
+  }
+
+  void close() {
+    flush();
+    file_.close();
+  }
+};
+
+}  // namespace detail
+
+// Added {} below to work around default constructor error known to
+// occur in Xcode versions 7.2.1 and 8.2.1.
+constexpr detail::buffer_size buffer_size{};
+
+/** A fast output stream which is not thread-safe. */
+class FMT_API ostream {
+ private:
+  FMT_MSC_WARNING(suppress : 4251)
+  detail::file_buffer buffer_;
+
+  ostream(cstring_view path, const detail::ostream_params& params)
+      : buffer_(path, params) {}
+
+ public:
+  ostream(ostream&& other) : buffer_(std::move(other.buffer_)) {}
+
+  ~ostream();
+
+  void flush() { buffer_.flush(); }
+
+  template <typename... T>
+  friend auto output_file(cstring_view path, T... params) -> ostream;
+
+  void close() { buffer_.close(); }
+
+  /**
+    Formats ``args`` according to specifications in ``fmt`` and writes the
+    output to the file.
+   */
+  template <typename... T> void print(format_string<T...> fmt, T&&... args) {
+    vformat_to(std::back_inserter(buffer_), fmt,
+               fmt::make_format_args(args...));
+  }
+};
+
+/**
+  \rst
+  Opens a file for writing. Supported parameters passed in *params*:
+
+  * ``<integer>``: Flags passed to `open
+    <https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html>`_
+    (``file::WRONLY | file::CREATE | file::TRUNC`` by default)
+  * ``buffer_size=<integer>``: Output buffer size
+
+  **Example**::
+
+    auto out = fmt::output_file("guide.txt");
+    out.print("Don't {}", "Panic");
+  \endrst
+ */
+template <typename... T>
+inline auto output_file(cstring_view path, T... params) -> ostream {
+  return {path, detail::ostream_params(params...)};
+}
+#endif  // FMT_USE_FCNTL
+
+FMT_END_EXPORT
+FMT_END_NAMESPACE
+
+#endif  // FMT_OS_H_

dep/fmt/include/fmt/ostream.h

@@ -0,0 +1,245 @@
+// Formatting library for C++ - std::ostream support
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_OSTREAM_H_
+#define FMT_OSTREAM_H_
+
+#include <fstream>  // std::filebuf
+
+#ifdef _WIN32
+#  ifdef __GLIBCXX__
+#    include <ext/stdio_filebuf.h>
+#    include <ext/stdio_sync_filebuf.h>
+#  endif
+#  include <io.h>
+#endif
+
+#include "format.h"
+
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template <typename Streambuf> class formatbuf : public Streambuf {
+ private:
+  using char_type = typename Streambuf::char_type;
+  using streamsize = decltype(std::declval<Streambuf>().sputn(nullptr, 0));
+  using int_type = typename Streambuf::int_type;
+  using traits_type = typename Streambuf::traits_type;
+
+  buffer<char_type>& buffer_;
+
+ public:
+  explicit formatbuf(buffer<char_type>& buf) : buffer_(buf) {}
+
+ protected:
+  // The put area is always empty. This makes the implementation simpler and has
+  // the advantage that the streambuf and the buffer are always in sync and
+  // sputc never writes into uninitialized memory. A disadvantage is that each
+  // call to sputc always results in a (virtual) call to overflow. There is no
+  // disadvantage here for sputn since this always results in a call to xsputn.
+
+  auto overflow(int_type ch) -> int_type override {
+    if (!traits_type::eq_int_type(ch, traits_type::eof()))
+      buffer_.push_back(static_cast<char_type>(ch));
+    return ch;
+  }
+
+  auto xsputn(const char_type* s, streamsize count) -> streamsize override {
+    buffer_.append(s, s + count);
+    return count;
+  }
+};
+
+// Generate a unique explicit instantion in every translation unit using a tag
+// type in an anonymous namespace.
+namespace {
+struct file_access_tag {};
+}  // namespace
+template <typename Tag, typename BufType, FILE* BufType::*FileMemberPtr>
+class file_access {
+  friend auto get_file(BufType& obj) -> FILE* { return obj.*FileMemberPtr; }
+};
+
+#if FMT_MSC_VERSION
+template class file_access<file_access_tag, std::filebuf,
+                           &std::filebuf::_Myfile>;
+auto get_file(std::filebuf&) -> FILE*;
+#endif
+
+inline auto write_ostream_unicode(std::ostream& os, fmt::string_view data)
+    -> bool {
+  FILE* f = nullptr;
+#if FMT_MSC_VERSION
+  if (auto* buf = dynamic_cast<std::filebuf*>(os.rdbuf()))
+    f = get_file(*buf);
+  else
+    return false;
+#elif defined(_WIN32) && defined(__GLIBCXX__)
+  auto* rdbuf = os.rdbuf();
+  if (auto* sfbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char>*>(rdbuf))
+    f = sfbuf->file();
+  else if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_filebuf<char>*>(rdbuf))
+    f = fbuf->file();
+  else
+    return false;
+#else
+  ignore_unused(os, data, f);
+#endif
+#ifdef _WIN32
+  if (f) {
+    int fd = _fileno(f);
+    if (_isatty(fd)) {
+      os.flush();
+      return write_console(fd, data);
+    }
+  }
+#endif
+  return false;
+}
+inline auto write_ostream_unicode(std::wostream&,
+                                  fmt::basic_string_view<wchar_t>) -> bool {
+  return false;
+}
+
+// Write the content of buf to os.
+// It is a separate function rather than a part of vprint to simplify testing.
+template <typename Char>
+void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) {
+  const Char* buf_data = buf.data();
+  using unsigned_streamsize = std::make_unsigned<std::streamsize>::type;
+  unsigned_streamsize size = buf.size();
+  unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>());
+  do {
+    unsigned_streamsize n = size <= max_size ? size : max_size;
+    os.write(buf_data, static_cast<std::streamsize>(n));
+    buf_data += n;
+    size -= n;
+  } while (size != 0);
+}
+
+template <typename Char, typename T>
+void format_value(buffer<Char>& buf, const T& value) {
+  auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf);
+  auto&& output = std::basic_ostream<Char>(&format_buf);
+#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
+  output.imbue(std::locale::classic());  // The default is always unlocalized.
+#endif
+  output << value;
+  output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
+}
+
+template <typename T> struct streamed_view {
+  const T& value;
+};
+
+}  // namespace detail
+
+// Formats an object of type T that has an overloaded ostream operator<<.
+template <typename Char>
+struct basic_ostream_formatter : formatter<basic_string_view<Char>, Char> {
+  void set_debug_format() = delete;
+
+  template <typename T, typename OutputIt>
+  auto format(const T& value, basic_format_context<OutputIt, Char>& ctx) const
+      -> OutputIt {
+    auto buffer = basic_memory_buffer<Char>();
+    detail::format_value(buffer, value);
+    return formatter<basic_string_view<Char>, Char>::format(
+        {buffer.data(), buffer.size()}, ctx);
+  }
+};
+
+using ostream_formatter = basic_ostream_formatter<char>;
+
+template <typename T, typename Char>
+struct formatter<detail::streamed_view<T>, Char>
+    : basic_ostream_formatter<Char> {
+  template <typename OutputIt>
+  auto format(detail::streamed_view<T> view,
+              basic_format_context<OutputIt, Char>& ctx) const -> OutputIt {
+    return basic_ostream_formatter<Char>::format(view.value, ctx);
+  }
+};
+
+/**
+  \rst
+  Returns a view that formats `value` via an ostream ``operator<<``.
+
+  **Example**::
+
+    fmt::print("Current thread id: {}\n",
+               fmt::streamed(std::this_thread::get_id()));
+  \endrst
+ */
+template <typename T>
+constexpr auto streamed(const T& value) -> detail::streamed_view<T> {
+  return {value};
+}
+
+namespace detail {
+
+inline void vprint_directly(std::ostream& os, string_view format_str,
+                            format_args args) {
+  auto buffer = memory_buffer();
+  detail::vformat_to(buffer, format_str, args);
+  detail::write_buffer(os, buffer);
+}
+
+}  // namespace detail
+
+FMT_EXPORT template <typename Char>
+void vprint(std::basic_ostream<Char>& os,
+            basic_string_view<type_identity_t<Char>> format_str,
+            basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+  auto buffer = basic_memory_buffer<Char>();
+  detail::vformat_to(buffer, format_str, args);
+  if (detail::write_ostream_unicode(os, {buffer.data(), buffer.size()})) return;
+  detail::write_buffer(os, buffer);
+}
+
+/**
+  \rst
+  Prints formatted data to the stream *os*.
+
+  **Example**::
+
+    fmt::print(cerr, "Don't {}!", "panic");
+  \endrst
+ */
+FMT_EXPORT template <typename... T>
+void print(std::ostream& os, format_string<T...> fmt, T&&... args) {
+  const auto& vargs = fmt::make_format_args(args...);
+  if (detail::is_utf8())
+    vprint(os, fmt, vargs);
+  else
+    detail::vprint_directly(os, fmt, vargs);
+}
+
+FMT_EXPORT
+template <typename... Args>
+void print(std::wostream& os,
+           basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
+           Args&&... args) {
+  vprint(os, fmt, fmt::make_format_args<buffer_context<wchar_t>>(args...));
+}
+
+FMT_EXPORT template <typename... T>
+void println(std::ostream& os, format_string<T...> fmt, T&&... args) {
+  fmt::print(os, "{}\n", fmt::format(fmt, std::forward<T>(args)...));
+}
+
+FMT_EXPORT
+template <typename... Args>
+void println(std::wostream& os,
+             basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
+             Args&&... args) {
+  print(os, L"{}\n", fmt::format(fmt, std::forward<Args>(args)...));
+}
+
+FMT_END_NAMESPACE
+
+#endif  // FMT_OSTREAM_H_

dep/fmt/include/fmt/printf.h

@@ -0,0 +1,675 @@
+// Formatting library for C++ - legacy printf implementation
+//
+// Copyright (c) 2012 - 2016, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_PRINTF_H_
+#define FMT_PRINTF_H_
+
+#include <algorithm>  // std::max
+#include <limits>     // std::numeric_limits
+
+#include "format.h"
+
+FMT_BEGIN_NAMESPACE
+FMT_BEGIN_EXPORT
+
+template <typename T> struct printf_formatter {
+  printf_formatter() = delete;
+};
+
+template <typename Char> class basic_printf_context {
+ private:
+  detail::buffer_appender<Char> out_;
+  basic_format_args<basic_printf_context> args_;
+
+  static_assert(std::is_same<Char, char>::value ||
+                    std::is_same<Char, wchar_t>::value,
+                "Unsupported code unit type.");
+
+ public:
+  using char_type = Char;
+  using parse_context_type = basic_format_parse_context<Char>;
+  template <typename T> using formatter_type = printf_formatter<T>;
+
+  /**
+    \rst
+    Constructs a ``printf_context`` object. References to the arguments are
+    stored in the context object so make sure they have appropriate lifetimes.
+    \endrst
+   */
+  basic_printf_context(detail::buffer_appender<Char> out,
+                       basic_format_args<basic_printf_context> args)
+      : out_(out), args_(args) {}
+
+  auto out() -> detail::buffer_appender<Char> { return out_; }
+  void advance_to(detail::buffer_appender<Char>) {}
+
+  auto locale() -> detail::locale_ref { return {}; }
+
+  auto arg(int id) const -> basic_format_arg<basic_printf_context> {
+    return args_.get(id);
+  }
+
+  FMT_CONSTEXPR void on_error(const char* message) {
+    detail::error_handler().on_error(message);
+  }
+};
+
+namespace detail {
+
+// Checks if a value fits in int - used to avoid warnings about comparing
+// signed and unsigned integers.
+template <bool IsSigned> struct int_checker {
+  template <typename T> static auto fits_in_int(T value) -> bool {
+    unsigned max = max_value<int>();
+    return value <= max;
+  }
+  static auto fits_in_int(bool) -> bool { return true; }
+};
+
+template <> struct int_checker<true> {
+  template <typename T> static auto fits_in_int(T value) -> bool {
+    return value >= (std::numeric_limits<int>::min)() &&
+           value <= max_value<int>();
+  }
+  static auto fits_in_int(int) -> bool { return true; }
+};
+
+struct printf_precision_handler {
+  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
+  auto operator()(T value) -> int {
+    if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
+      throw_format_error("number is too big");
+    return (std::max)(static_cast<int>(value), 0);
+  }
+
+  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
+  auto operator()(T) -> int {
+    throw_format_error("precision is not integer");
+    return 0;
+  }
+};
+
+// An argument visitor that returns true iff arg is a zero integer.
+struct is_zero_int {
+  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
+  auto operator()(T value) -> bool {
+    return value == 0;
+  }
+
+  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
+  auto operator()(T) -> bool {
+    return false;
+  }
+};
+
+template <typename T> struct make_unsigned_or_bool : std::make_unsigned<T> {};
+
+template <> struct make_unsigned_or_bool<bool> {
+  using type = bool;
+};
+
+template <typename T, typename Context> class arg_converter {
+ private:
+  using char_type = typename Context::char_type;
+
+  basic_format_arg<Context>& arg_;
+  char_type type_;
+
+ public:
+  arg_converter(basic_format_arg<Context>& arg, char_type type)
+      : arg_(arg), type_(type) {}
+
+  void operator()(bool value) {
+    if (type_ != 's') operator()<bool>(value);
+  }
+
+  template <typename U, FMT_ENABLE_IF(std::is_integral<U>::value)>
+  void operator()(U value) {
+    bool is_signed = type_ == 'd' || type_ == 'i';
+    using target_type = conditional_t<std::is_same<T, void>::value, U, T>;
+    if (const_check(sizeof(target_type) <= sizeof(int))) {
+      // Extra casts are used to silence warnings.
+      if (is_signed) {
+        auto n = static_cast<int>(static_cast<target_type>(value));
+        arg_ = detail::make_arg<Context>(n);
+      } else {
+        using unsigned_type = typename make_unsigned_or_bool<target_type>::type;
+        auto n = static_cast<unsigned>(static_cast<unsigned_type>(value));
+        arg_ = detail::make_arg<Context>(n);
+      }
+    } else {
+      if (is_signed) {
+        // glibc's printf doesn't sign extend arguments of smaller types:
+        //   std::printf("%lld", -42);  // prints "4294967254"
+        // but we don't have to do the same because it's a UB.
+        auto n = static_cast<long long>(value);
+        arg_ = detail::make_arg<Context>(n);
+      } else {
+        auto n = static_cast<typename make_unsigned_or_bool<U>::type>(value);
+        arg_ = detail::make_arg<Context>(n);
+      }
+    }
+  }
+
+  template <typename U, FMT_ENABLE_IF(!std::is_integral<U>::value)>
+  void operator()(U) {}  // No conversion needed for non-integral types.
+};
+
+// Converts an integer argument to T for printf, if T is an integral type.
+// If T is void, the argument is converted to corresponding signed or unsigned
+// type depending on the type specifier: 'd' and 'i' - signed, other -
+// unsigned).
+template <typename T, typename Context, typename Char>
+void convert_arg(basic_format_arg<Context>& arg, Char type) {
+  visit_format_arg(arg_converter<T, Context>(arg, type), arg);
+}
+
+// Converts an integer argument to char for printf.
+template <typename Context> class char_converter {
+ private:
+  basic_format_arg<Context>& arg_;
+
+ public:
+  explicit char_converter(basic_format_arg<Context>& arg) : arg_(arg) {}
+
+  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
+  void operator()(T value) {
+    auto c = static_cast<typename Context::char_type>(value);
+    arg_ = detail::make_arg<Context>(c);
+  }
+
+  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
+  void operator()(T) {}  // No conversion needed for non-integral types.
+};
+
+// An argument visitor that return a pointer to a C string if argument is a
+// string or null otherwise.
+template <typename Char> struct get_cstring {
+  template <typename T> auto operator()(T) -> const Char* { return nullptr; }
+  auto operator()(const Char* s) -> const Char* { return s; }
+};
+
+// Checks if an argument is a valid printf width specifier and sets
+// left alignment if it is negative.
+template <typename Char> class printf_width_handler {
+ private:
+  format_specs<Char>& specs_;
+
+ public:
+  explicit printf_width_handler(format_specs<Char>& specs) : specs_(specs) {}
+
+  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
+  auto operator()(T value) -> unsigned {
+    auto width = static_cast<uint32_or_64_or_128_t<T>>(value);
+    if (detail::is_negative(value)) {
+      specs_.align = align::left;
+      width = 0 - width;
+    }
+    unsigned int_max = max_value<int>();
+    if (width > int_max) throw_format_error("number is too big");
+    return static_cast<unsigned>(width);
+  }
+
+  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
+  auto operator()(T) -> unsigned {
+    throw_format_error("width is not integer");
+    return 0;
+  }
+};
+
+// Workaround for a bug with the XL compiler when initializing
+// printf_arg_formatter's base class.
+template <typename Char>
+auto make_arg_formatter(buffer_appender<Char> iter, format_specs<Char>& s)
+    -> arg_formatter<Char> {
+  return {iter, s, locale_ref()};
+}
+
+// The ``printf`` argument formatter.
+template <typename Char>
+class printf_arg_formatter : public arg_formatter<Char> {
+ private:
+  using base = arg_formatter<Char>;
+  using context_type = basic_printf_context<Char>;
+
+  context_type& context_;
+
+  void write_null_pointer(bool is_string = false) {
+    auto s = this->specs;
+    s.type = presentation_type::none;
+    write_bytes(this->out, is_string ? "(null)" : "(nil)", s);
+  }
+
+ public:
+  printf_arg_formatter(buffer_appender<Char> iter, format_specs<Char>& s,
+                       context_type& ctx)
+      : base(make_arg_formatter(iter, s)), context_(ctx) {}
+
+  void operator()(monostate value) { base::operator()(value); }
+
+  template <typename T, FMT_ENABLE_IF(detail::is_integral<T>::value)>
+  void operator()(T value) {
+    // MSVC2013 fails to compile separate overloads for bool and Char so use
+    // std::is_same instead.
+    if (!std::is_same<T, Char>::value) {
+      base::operator()(value);
+      return;
+    }
+    format_specs<Char> fmt_specs = this->specs;
+    if (fmt_specs.type != presentation_type::none &&
+        fmt_specs.type != presentation_type::chr) {
+      return (*this)(static_cast<int>(value));
+    }
+    fmt_specs.sign = sign::none;
+    fmt_specs.alt = false;
+    fmt_specs.fill[0] = ' ';  // Ignore '0' flag for char types.
+    // align::numeric needs to be overwritten here since the '0' flag is
+    // ignored for non-numeric types
+    if (fmt_specs.align == align::none || fmt_specs.align == align::numeric)
+      fmt_specs.align = align::right;
+    write<Char>(this->out, static_cast<Char>(value), fmt_specs);
+  }
+
+  template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
+  void operator()(T value) {
+    base::operator()(value);
+  }
+
+  /** Formats a null-terminated C string. */
+  void operator()(const char* value) {
+    if (value)
+      base::operator()(value);
+    else
+      write_null_pointer(this->specs.type != presentation_type::pointer);
+  }
+
+  /** Formats a null-terminated wide C string. */
+  void operator()(const wchar_t* value) {
+    if (value)
+      base::operator()(value);
+    else
+      write_null_pointer(this->specs.type != presentation_type::pointer);
+  }
+
+  void operator()(basic_string_view<Char> value) { base::operator()(value); }
+
+  /** Formats a pointer. */
+  void operator()(const void* value) {
+    if (value)
+      base::operator()(value);
+    else
+      write_null_pointer();
+  }
+
+  /** Formats an argument of a custom (user-defined) type. */
+  void operator()(typename basic_format_arg<context_type>::handle handle) {
+    auto parse_ctx = basic_format_parse_context<Char>({});
+    handle.format(parse_ctx, context_);
+  }
+};
+
+template <typename Char>
+void parse_flags(format_specs<Char>& specs, const Char*& it, const Char* end) {
+  for (; it != end; ++it) {
+    switch (*it) {
+    case '-':
+      specs.align = align::left;
+      break;
+    case '+':
+      specs.sign = sign::plus;
+      break;
+    case '0':
+      specs.fill[0] = '0';
+      break;
+    case ' ':
+      if (specs.sign != sign::plus) specs.sign = sign::space;
+      break;
+    case '#':
+      specs.alt = true;
+      break;
+    default:
+      return;
+    }
+  }
+}
+
+template <typename Char, typename GetArg>
+auto parse_header(const Char*& it, const Char* end, format_specs<Char>& specs,
+                  GetArg get_arg) -> int {
+  int arg_index = -1;
+  Char c = *it;
+  if (c >= '0' && c <= '9') {
+    // Parse an argument index (if followed by '$') or a width possibly
+    // preceded with '0' flag(s).
+    int value = parse_nonnegative_int(it, end, -1);
+    if (it != end && *it == '$') {  // value is an argument index
+      ++it;
+      arg_index = value != -1 ? value : max_value<int>();
+    } else {
+      if (c == '0') specs.fill[0] = '0';
+      if (value != 0) {
+        // Nonzero value means that we parsed width and don't need to
+        // parse it or flags again, so return now.
+        if (value == -1) throw_format_error("number is too big");
+        specs.width = value;
+        return arg_index;
+      }
+    }
+  }
+  parse_flags(specs, it, end);
+  // Parse width.
+  if (it != end) {
+    if (*it >= '0' && *it <= '9') {
+      specs.width = parse_nonnegative_int(it, end, -1);
+      if (specs.width == -1) throw_format_error("number is too big");
+    } else if (*it == '*') {
+      ++it;
+      specs.width = static_cast<int>(visit_format_arg(
+          detail::printf_width_handler<Char>(specs), get_arg(-1)));
+    }
+  }
+  return arg_index;
+}
+
+inline auto parse_printf_presentation_type(char c, type t)
+    -> presentation_type {
+  using pt = presentation_type;
+  constexpr auto integral_set = sint_set | uint_set | bool_set | char_set;
+  switch (c) {
+  case 'd':
+    return in(t, integral_set) ? pt::dec : pt::none;
+  case 'o':
+    return in(t, integral_set) ? pt::oct : pt::none;
+  case 'x':
+    return in(t, integral_set) ? pt::hex_lower : pt::none;
+  case 'X':
+    return in(t, integral_set) ? pt::hex_upper : pt::none;
+  case 'a':
+    return in(t, float_set) ? pt::hexfloat_lower : pt::none;
+  case 'A':
+    return in(t, float_set) ? pt::hexfloat_upper : pt::none;
+  case 'e':
+    return in(t, float_set) ? pt::exp_lower : pt::none;
+  case 'E':
+    return in(t, float_set) ? pt::exp_upper : pt::none;
+  case 'f':
+    return in(t, float_set) ? pt::fixed_lower : pt::none;
+  case 'F':
+    return in(t, float_set) ? pt::fixed_upper : pt::none;
+  case 'g':
+    return in(t, float_set) ? pt::general_lower : pt::none;
+  case 'G':
+    return in(t, float_set) ? pt::general_upper : pt::none;
+  case 'c':
+    return in(t, integral_set) ? pt::chr : pt::none;
+  case 's':
+    return in(t, string_set | cstring_set) ? pt::string : pt::none;
+  case 'p':
+    return in(t, pointer_set | cstring_set) ? pt::pointer : pt::none;
+  default:
+    return pt::none;
+  }
+}
+
+template <typename Char, typename Context>
+void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
+             basic_format_args<Context> args) {
+  using iterator = buffer_appender<Char>;
+  auto out = iterator(buf);
+  auto context = basic_printf_context<Char>(out, args);
+  auto parse_ctx = basic_format_parse_context<Char>(format);
+
+  // Returns the argument with specified index or, if arg_index is -1, the next
+  // argument.
+  auto get_arg = [&](int arg_index) {
+    if (arg_index < 0)
+      arg_index = parse_ctx.next_arg_id();
+    else
+      parse_ctx.check_arg_id(--arg_index);
+    return detail::get_arg(context, arg_index);
+  };
+
+  const Char* start = parse_ctx.begin();
+  const Char* end = parse_ctx.end();
+  auto it = start;
+  while (it != end) {
+    if (!find<false, Char>(it, end, '%', it)) {
+      it = end;  // find leaves it == nullptr if it doesn't find '%'.
+      break;
+    }
+    Char c = *it++;
+    if (it != end && *it == c) {
+      write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
+      start = ++it;
+      continue;
+    }
+    write(out, basic_string_view<Char>(start, to_unsigned(it - 1 - start)));
+
+    auto specs = format_specs<Char>();
+    specs.align = align::right;
+
+    // Parse argument index, flags and width.
+    int arg_index = parse_header(it, end, specs, get_arg);
+    if (arg_index == 0) throw_format_error("argument not found");
+
+    // Parse precision.
+    if (it != end && *it == '.') {
+      ++it;
+      c = it != end ? *it : 0;
+      if ('0' <= c && c <= '9') {
+        specs.precision = parse_nonnegative_int(it, end, 0);
+      } else if (c == '*') {
+        ++it;
+        specs.precision = static_cast<int>(
+            visit_format_arg(printf_precision_handler(), get_arg(-1)));
+      } else {
+        specs.precision = 0;
+      }
+    }
+
+    auto arg = get_arg(arg_index);
+    // For d, i, o, u, x, and X conversion specifiers, if a precision is
+    // specified, the '0' flag is ignored
+    if (specs.precision >= 0 && arg.is_integral()) {
+      // Ignore '0' for non-numeric types or if '-' present.
+      specs.fill[0] = ' ';
+    }
+    if (specs.precision >= 0 && arg.type() == type::cstring_type) {
+      auto str = visit_format_arg(get_cstring<Char>(), arg);
+      auto str_end = str + specs.precision;
+      auto nul = std::find(str, str_end, Char());
+      auto sv = basic_string_view<Char>(
+          str, to_unsigned(nul != str_end ? nul - str : specs.precision));
+      arg = make_arg<basic_printf_context<Char>>(sv);
+    }
+    if (specs.alt && visit_format_arg(is_zero_int(), arg)) specs.alt = false;
+    if (specs.fill[0] == '0') {
+      if (arg.is_arithmetic() && specs.align != align::left)
+        specs.align = align::numeric;
+      else
+        specs.fill[0] = ' ';  // Ignore '0' flag for non-numeric types or if '-'
+                              // flag is also present.
+    }
+
+    // Parse length and convert the argument to the required type.
+    c = it != end ? *it++ : 0;
+    Char t = it != end ? *it : 0;
+    switch (c) {
+    case 'h':
+      if (t == 'h') {
+        ++it;
+        t = it != end ? *it : 0;
+        convert_arg<signed char>(arg, t);
+      } else {
+        convert_arg<short>(arg, t);
+      }
+      break;
+    case 'l':
+      if (t == 'l') {
+        ++it;
+        t = it != end ? *it : 0;
+        convert_arg<long long>(arg, t);
+      } else {
+        convert_arg<long>(arg, t);
+      }
+      break;
+    case 'j':
+      convert_arg<intmax_t>(arg, t);
+      break;
+    case 'z':
+      convert_arg<size_t>(arg, t);
+      break;
+    case 't':
+      convert_arg<std::ptrdiff_t>(arg, t);
+      break;
+    case 'L':
+      // printf produces garbage when 'L' is omitted for long double, no
+      // need to do the same.
+      break;
+    default:
+      --it;
+      convert_arg<void>(arg, c);
+    }
+
+    // Parse type.
+    if (it == end) throw_format_error("invalid format string");
+    char type = static_cast<char>(*it++);
+    if (arg.is_integral()) {
+      // Normalize type.
+      switch (type) {
+      case 'i':
+      case 'u':
+        type = 'd';
+        break;
+      case 'c':
+        visit_format_arg(char_converter<basic_printf_context<Char>>(arg), arg);
+        break;
+      }
+    }
+    specs.type = parse_printf_presentation_type(type, arg.type());
+    if (specs.type == presentation_type::none)
+      throw_format_error("invalid format specifier");
+
+    start = it;
+
+    // Format argument.
+    visit_format_arg(printf_arg_formatter<Char>(out, specs, context), arg);
+  }
+  write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
+}
+}  // namespace detail
+
+using printf_context = basic_printf_context<char>;
+using wprintf_context = basic_printf_context<wchar_t>;
+
+using printf_args = basic_format_args<printf_context>;
+using wprintf_args = basic_format_args<wprintf_context>;
+
+/**
+  \rst
+  Constructs an `~fmt::format_arg_store` object that contains references to
+  arguments and can be implicitly converted to `~fmt::printf_args`.
+  \endrst
+ */
+template <typename... T>
+inline auto make_printf_args(const T&... args)
+    -> format_arg_store<printf_context, T...> {
+  return {args...};
+}
+
+// DEPRECATED!
+template <typename... T>
+inline auto make_wprintf_args(const T&... args)
+    -> format_arg_store<wprintf_context, T...> {
+  return {args...};
+}
+
+template <typename Char>
+inline auto vsprintf(
+    basic_string_view<Char> fmt,
+    basic_format_args<basic_printf_context<type_identity_t<Char>>> args)
+    -> std::basic_string<Char> {
+  auto buf = basic_memory_buffer<Char>();
+  detail::vprintf(buf, fmt, args);
+  return to_string(buf);
+}
+
+/**
+  \rst
+  Formats arguments and returns the result as a string.
+
+  **Example**::
+
+    std::string message = fmt::sprintf("The answer is %d", 42);
+  \endrst
+*/
+template <typename S, typename... T,
+          typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
+inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string<Char> {
+  return vsprintf(detail::to_string_view(fmt),
+                  fmt::make_format_args<basic_printf_context<Char>>(args...));
+}
+
+template <typename Char>
+inline auto vfprintf(
+    std::FILE* f, basic_string_view<Char> fmt,
+    basic_format_args<basic_printf_context<type_identity_t<Char>>> args)
+    -> int {
+  auto buf = basic_memory_buffer<Char>();
+  detail::vprintf(buf, fmt, args);
+  size_t size = buf.size();
+  return std::fwrite(buf.data(), sizeof(Char), size, f) < size
+             ? -1
+             : static_cast<int>(size);
+}
+
+/**
+  \rst
+  Prints formatted data to the file *f*.
+
+  **Example**::
+
+    fmt::fprintf(stderr, "Don't %s!", "panic");
+  \endrst
+ */
+template <typename S, typename... T, typename Char = char_t<S>>
+inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int {
+  return vfprintf(f, detail::to_string_view(fmt),
+                  fmt::make_format_args<basic_printf_context<Char>>(args...));
+}
+
+template <typename Char>
+FMT_DEPRECATED inline auto vprintf(
+    basic_string_view<Char> fmt,
+    basic_format_args<basic_printf_context<type_identity_t<Char>>> args)
+    -> int {
+  return vfprintf(stdout, fmt, args);
+}
+
+/**
+  \rst
+  Prints formatted data to ``stdout``.
+
+  **Example**::
+
+    fmt::printf("Elapsed time: %.2f seconds", 1.23);
+  \endrst
+ */
+template <typename... T>
+inline auto printf(string_view fmt, const T&... args) -> int {
+  return vfprintf(stdout, fmt, make_printf_args(args...));
+}
+template <typename... T>
+FMT_DEPRECATED inline auto printf(basic_string_view<wchar_t> fmt,
+                                  const T&... args) -> int {
+  return vfprintf(stdout, fmt, make_wprintf_args(args...));
+}
+
+FMT_END_EXPORT
+FMT_END_NAMESPACE
+
+#endif  // FMT_PRINTF_H_

dep/fmt/include/fmt/ranges.h

@@ -0,0 +1,738 @@
+// Formatting library for C++ - range and tuple support
+//
+// Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_RANGES_H_
+#define FMT_RANGES_H_
+
+#include <initializer_list>
+#include <tuple>
+#include <type_traits>
+
+#include "format.h"
+
+FMT_BEGIN_NAMESPACE
+
+namespace detail {
+
+template <typename Range, typename OutputIt>
+auto copy(const Range& range, OutputIt out) -> OutputIt {
+  for (auto it = range.begin(), end = range.end(); it != end; ++it)
+    *out++ = *it;
+  return out;
+}
+
+template <typename OutputIt>
+auto copy(const char* str, OutputIt out) -> OutputIt {
+  while (*str) *out++ = *str++;
+  return out;
+}
+
+template <typename OutputIt> auto copy(char ch, OutputIt out) -> OutputIt {
+  *out++ = ch;
+  return out;
+}
+
+template <typename OutputIt> auto copy(wchar_t ch, OutputIt out) -> OutputIt {
+  *out++ = ch;
+  return out;
+}
+
+// Returns true if T has a std::string-like interface, like std::string_view.
+template <typename T> class is_std_string_like {
+  template <typename U>
+  static auto check(U* p)
+      -> decltype((void)p->find('a'), p->length(), (void)p->data(), int());
+  template <typename> static void check(...);
+
+ public:
+  static constexpr const bool value =
+      is_string<T>::value ||
+      std::is_convertible<T, std_string_view<char>>::value ||
+      !std::is_void<decltype(check<T>(nullptr))>::value;
+};
+
+template <typename Char>
+struct is_std_string_like<fmt::basic_string_view<Char>> : std::true_type {};
+
+template <typename T> class is_map {
+  template <typename U> static auto check(U*) -> typename U::mapped_type;
+  template <typename> static void check(...);
+
+ public:
+#ifdef FMT_FORMAT_MAP_AS_LIST  // DEPRECATED!
+  static constexpr const bool value = false;
+#else
+  static constexpr const bool value =
+      !std::is_void<decltype(check<T>(nullptr))>::value;
+#endif
+};
+
+template <typename T> class is_set {
+  template <typename U> static auto check(U*) -> typename U::key_type;
+  template <typename> static void check(...);
+
+ public:
+#ifdef FMT_FORMAT_SET_AS_LIST  // DEPRECATED!
+  static constexpr const bool value = false;
+#else
+  static constexpr const bool value =
+      !std::is_void<decltype(check<T>(nullptr))>::value && !is_map<T>::value;
+#endif
+};
+
+template <typename... Ts> struct conditional_helper {};
+
+template <typename T, typename _ = void> struct is_range_ : std::false_type {};
+
+#if !FMT_MSC_VERSION || FMT_MSC_VERSION > 1800
+
+#  define FMT_DECLTYPE_RETURN(val)  \
+    ->decltype(val) { return val; } \
+    static_assert(                  \
+        true, "")  // This makes it so that a semicolon is required after the
+                   // macro, which helps clang-format handle the formatting.
+
+// C array overload
+template <typename T, std::size_t N>
+auto range_begin(const T (&arr)[N]) -> const T* {
+  return arr;
+}
+template <typename T, std::size_t N>
+auto range_end(const T (&arr)[N]) -> const T* {
+  return arr + N;
+}
+
+template <typename T, typename Enable = void>
+struct has_member_fn_begin_end_t : std::false_type {};
+
+template <typename T>
+struct has_member_fn_begin_end_t<T, void_t<decltype(std::declval<T>().begin()),
+                                           decltype(std::declval<T>().end())>>
+    : std::true_type {};
+
+// Member function overload
+template <typename T>
+auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).begin());
+template <typename T>
+auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).end());
+
+// ADL overload. Only participates in overload resolution if member functions
+// are not found.
+template <typename T>
+auto range_begin(T&& rng)
+    -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
+                   decltype(begin(static_cast<T&&>(rng)))> {
+  return begin(static_cast<T&&>(rng));
+}
+template <typename T>
+auto range_end(T&& rng) -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
+                                       decltype(end(static_cast<T&&>(rng)))> {
+  return end(static_cast<T&&>(rng));
+}
+
+template <typename T, typename Enable = void>
+struct has_const_begin_end : std::false_type {};
+template <typename T, typename Enable = void>
+struct has_mutable_begin_end : std::false_type {};
+
+template <typename T>
+struct has_const_begin_end<
+    T,
+    void_t<
+        decltype(detail::range_begin(std::declval<const remove_cvref_t<T>&>())),
+        decltype(detail::range_end(std::declval<const remove_cvref_t<T>&>()))>>
+    : std::true_type {};
+
+template <typename T>
+struct has_mutable_begin_end<
+    T, void_t<decltype(detail::range_begin(std::declval<T>())),
+              decltype(detail::range_end(std::declval<T>())),
+              // the extra int here is because older versions of MSVC don't
+              // SFINAE properly unless there are distinct types
+              int>> : std::true_type {};
+
+template <typename T>
+struct is_range_<T, void>
+    : std::integral_constant<bool, (has_const_begin_end<T>::value ||
+                                    has_mutable_begin_end<T>::value)> {};
+#  undef FMT_DECLTYPE_RETURN
+#endif
+
+// tuple_size and tuple_element check.
+template <typename T> class is_tuple_like_ {
+  template <typename U>
+  static auto check(U* p) -> decltype(std::tuple_size<U>::value, int());
+  template <typename> static void check(...);
+
+ public:
+  static constexpr const bool value =
+      !std::is_void<decltype(check<T>(nullptr))>::value;
+};
+
+// Check for integer_sequence
+#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VERSION >= 1900
+template <typename T, T... N>
+using integer_sequence = std::integer_sequence<T, N...>;
+template <size_t... N> using index_sequence = std::index_sequence<N...>;
+template <size_t N> using make_index_sequence = std::make_index_sequence<N>;
+#else
+template <typename T, T... N> struct integer_sequence {
+  using value_type = T;
+
+  static FMT_CONSTEXPR auto size() -> size_t { return sizeof...(N); }
+};
+
+template <size_t... N> using index_sequence = integer_sequence<size_t, N...>;
+
+template <typename T, size_t N, T... Ns>
+struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {};
+template <typename T, T... Ns>
+struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {};
+
+template <size_t N>
+using make_index_sequence = make_integer_sequence<size_t, N>;
+#endif
+
+template <typename T>
+using tuple_index_sequence = make_index_sequence<std::tuple_size<T>::value>;
+
+template <typename T, typename C, bool = is_tuple_like_<T>::value>
+class is_tuple_formattable_ {
+ public:
+  static constexpr const bool value = false;
+};
+template <typename T, typename C> class is_tuple_formattable_<T, C, true> {
+  template <std::size_t... Is>
+  static auto check2(index_sequence<Is...>,
+                     integer_sequence<bool, (Is == Is)...>) -> std::true_type;
+  static auto check2(...) -> std::false_type;
+  template <std::size_t... Is>
+  static auto check(index_sequence<Is...>) -> decltype(check2(
+      index_sequence<Is...>{},
+      integer_sequence<bool,
+                       (is_formattable<typename std::tuple_element<Is, T>::type,
+                                       C>::value)...>{}));
+
+ public:
+  static constexpr const bool value =
+      decltype(check(tuple_index_sequence<T>{}))::value;
+};
+
+template <typename Tuple, typename F, size_t... Is>
+FMT_CONSTEXPR void for_each(index_sequence<Is...>, Tuple&& t, F&& f) {
+  using std::get;
+  // Using a free function get<Is>(Tuple) now.
+  const int unused[] = {0, ((void)f(get<Is>(t)), 0)...};
+  ignore_unused(unused);
+}
+
+template <typename Tuple, typename F>
+FMT_CONSTEXPR void for_each(Tuple&& t, F&& f) {
+  for_each(tuple_index_sequence<remove_cvref_t<Tuple>>(),
+           std::forward<Tuple>(t), std::forward<F>(f));
+}
+
+template <typename Tuple1, typename Tuple2, typename F, size_t... Is>
+void for_each2(index_sequence<Is...>, Tuple1&& t1, Tuple2&& t2, F&& f) {
+  using std::get;
+  const int unused[] = {0, ((void)f(get<Is>(t1), get<Is>(t2)), 0)...};
+  ignore_unused(unused);
+}
+
+template <typename Tuple1, typename Tuple2, typename F>
+void for_each2(Tuple1&& t1, Tuple2&& t2, F&& f) {
+  for_each2(tuple_index_sequence<remove_cvref_t<Tuple1>>(),
+            std::forward<Tuple1>(t1), std::forward<Tuple2>(t2),
+            std::forward<F>(f));
+}
+
+namespace tuple {
+// Workaround a bug in MSVC 2019 (v140).
+template <typename Char, typename... T>
+using result_t = std::tuple<formatter<remove_cvref_t<T>, Char>...>;
+
+using std::get;
+template <typename Tuple, typename Char, std::size_t... Is>
+auto get_formatters(index_sequence<Is...>)
+    -> result_t<Char, decltype(get<Is>(std::declval<Tuple>()))...>;
+}  // namespace tuple
+
+#if FMT_MSC_VERSION && FMT_MSC_VERSION < 1920
+// Older MSVC doesn't get the reference type correctly for arrays.
+template <typename R> struct range_reference_type_impl {
+  using type = decltype(*detail::range_begin(std::declval<R&>()));
+};
+
+template <typename T, std::size_t N> struct range_reference_type_impl<T[N]> {
+  using type = T&;
+};
+
+template <typename T>
+using range_reference_type = typename range_reference_type_impl<T>::type;
+#else
+template <typename Range>
+using range_reference_type =
+    decltype(*detail::range_begin(std::declval<Range&>()));
+#endif
+
+// We don't use the Range's value_type for anything, but we do need the Range's
+// reference type, with cv-ref stripped.
+template <typename Range>
+using uncvref_type = remove_cvref_t<range_reference_type<Range>>;
+
+template <typename Formatter>
+FMT_CONSTEXPR auto maybe_set_debug_format(Formatter& f, bool set)
+    -> decltype(f.set_debug_format(set)) {
+  f.set_debug_format(set);
+}
+template <typename Formatter>
+FMT_CONSTEXPR void maybe_set_debug_format(Formatter&, ...) {}
+
+// These are not generic lambdas for compatibility with C++11.
+template <typename ParseContext> struct parse_empty_specs {
+  template <typename Formatter> FMT_CONSTEXPR void operator()(Formatter& f) {
+    f.parse(ctx);
+    detail::maybe_set_debug_format(f, true);
+  }
+  ParseContext& ctx;
+};
+template <typename FormatContext> struct format_tuple_element {
+  using char_type = typename FormatContext::char_type;
+
+  template <typename T>
+  void operator()(const formatter<T, char_type>& f, const T& v) {
+    if (i > 0)
+      ctx.advance_to(detail::copy_str<char_type>(separator, ctx.out()));
+    ctx.advance_to(f.format(v, ctx));
+    ++i;
+  }
+
+  int i;
+  FormatContext& ctx;
+  basic_string_view<char_type> separator;
+};
+
+}  // namespace detail
+
+template <typename T> struct is_tuple_like {
+  static constexpr const bool value =
+      detail::is_tuple_like_<T>::value && !detail::is_range_<T>::value;
+};
+
+template <typename T, typename C> struct is_tuple_formattable {
+  static constexpr const bool value =
+      detail::is_tuple_formattable_<T, C>::value;
+};
+
+template <typename Tuple, typename Char>
+struct formatter<Tuple, Char,
+                 enable_if_t<fmt::is_tuple_like<Tuple>::value &&
+                             fmt::is_tuple_formattable<Tuple, Char>::value>> {
+ private:
+  decltype(detail::tuple::get_formatters<Tuple, Char>(
+      detail::tuple_index_sequence<Tuple>())) formatters_;
+
+  basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
+  basic_string_view<Char> opening_bracket_ =
+      detail::string_literal<Char, '('>{};
+  basic_string_view<Char> closing_bracket_ =
+      detail::string_literal<Char, ')'>{};
+
+ public:
+  FMT_CONSTEXPR formatter() {}
+
+  FMT_CONSTEXPR void set_separator(basic_string_view<Char> sep) {
+    separator_ = sep;
+  }
+
+  FMT_CONSTEXPR void set_brackets(basic_string_view<Char> open,
+                                  basic_string_view<Char> close) {
+    opening_bracket_ = open;
+    closing_bracket_ = close;
+  }
+
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+    auto it = ctx.begin();
+    if (it != ctx.end() && *it != '}')
+      FMT_THROW(format_error("invalid format specifier"));
+    detail::for_each(formatters_, detail::parse_empty_specs<ParseContext>{ctx});
+    return it;
+  }
+
+  template <typename FormatContext>
+  auto format(const Tuple& value, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    ctx.advance_to(detail::copy_str<Char>(opening_bracket_, ctx.out()));
+    detail::for_each2(
+        formatters_, value,
+        detail::format_tuple_element<FormatContext>{0, ctx, separator_});
+    return detail::copy_str<Char>(closing_bracket_, ctx.out());
+  }
+};
+
+template <typename T, typename Char> struct is_range {
+  static constexpr const bool value =
+      detail::is_range_<T>::value && !detail::is_std_string_like<T>::value &&
+      !std::is_convertible<T, std::basic_string<Char>>::value &&
+      !std::is_convertible<T, detail::std_string_view<Char>>::value;
+};
+
+namespace detail {
+template <typename Context> struct range_mapper {
+  using mapper = arg_mapper<Context>;
+
+  template <typename T,
+            FMT_ENABLE_IF(has_formatter<remove_cvref_t<T>, Context>::value)>
+  static auto map(T&& value) -> T&& {
+    return static_cast<T&&>(value);
+  }
+  template <typename T,
+            FMT_ENABLE_IF(!has_formatter<remove_cvref_t<T>, Context>::value)>
+  static auto map(T&& value)
+      -> decltype(mapper().map(static_cast<T&&>(value))) {
+    return mapper().map(static_cast<T&&>(value));
+  }
+};
+
+template <typename Char, typename Element>
+using range_formatter_type =
+    formatter<remove_cvref_t<decltype(range_mapper<buffer_context<Char>>{}.map(
+                  std::declval<Element>()))>,
+              Char>;
+
+template <typename R>
+using maybe_const_range =
+    conditional_t<has_const_begin_end<R>::value, const R, R>;
+
+// Workaround a bug in MSVC 2015 and earlier.
+#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
+template <typename R, typename Char>
+struct is_formattable_delayed
+    : is_formattable<uncvref_type<maybe_const_range<R>>, Char> {};
+#endif
+}  // namespace detail
+
+template <typename...> struct conjunction : std::true_type {};
+template <typename P> struct conjunction<P> : P {};
+template <typename P1, typename... Pn>
+struct conjunction<P1, Pn...>
+    : conditional_t<bool(P1::value), conjunction<Pn...>, P1> {};
+
+template <typename T, typename Char, typename Enable = void>
+struct range_formatter;
+
+template <typename T, typename Char>
+struct range_formatter<
+    T, Char,
+    enable_if_t<conjunction<std::is_same<T, remove_cvref_t<T>>,
+                            is_formattable<T, Char>>::value>> {
+ private:
+  detail::range_formatter_type<Char, T> underlying_;
+  basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
+  basic_string_view<Char> opening_bracket_ =
+      detail::string_literal<Char, '['>{};
+  basic_string_view<Char> closing_bracket_ =
+      detail::string_literal<Char, ']'>{};
+
+ public:
+  FMT_CONSTEXPR range_formatter() {}
+
+  FMT_CONSTEXPR auto underlying() -> detail::range_formatter_type<Char, T>& {
+    return underlying_;
+  }
+
+  FMT_CONSTEXPR void set_separator(basic_string_view<Char> sep) {
+    separator_ = sep;
+  }
+
+  FMT_CONSTEXPR void set_brackets(basic_string_view<Char> open,
+                                  basic_string_view<Char> close) {
+    opening_bracket_ = open;
+    closing_bracket_ = close;
+  }
+
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+    auto it = ctx.begin();
+    auto end = ctx.end();
+
+    if (it != end && *it == 'n') {
+      set_brackets({}, {});
+      ++it;
+    }
+
+    if (it != end && *it != '}') {
+      if (*it != ':') FMT_THROW(format_error("invalid format specifier"));
+      ++it;
+    } else {
+      detail::maybe_set_debug_format(underlying_, true);
+    }
+
+    ctx.advance_to(it);
+    return underlying_.parse(ctx);
+  }
+
+  template <typename R, typename FormatContext>
+  auto format(R&& range, FormatContext& ctx) const -> decltype(ctx.out()) {
+    detail::range_mapper<buffer_context<Char>> mapper;
+    auto out = ctx.out();
+    out = detail::copy_str<Char>(opening_bracket_, out);
+    int i = 0;
+    auto it = detail::range_begin(range);
+    auto end = detail::range_end(range);
+    for (; it != end; ++it) {
+      if (i > 0) out = detail::copy_str<Char>(separator_, out);
+      ctx.advance_to(out);
+      auto&& item = *it;
+      out = underlying_.format(mapper.map(item), ctx);
+      ++i;
+    }
+    out = detail::copy_str<Char>(closing_bracket_, out);
+    return out;
+  }
+};
+
+enum class range_format { disabled, map, set, sequence, string, debug_string };
+
+namespace detail {
+template <typename T>
+struct range_format_kind_
+    : std::integral_constant<range_format,
+                             std::is_same<uncvref_type<T>, T>::value
+                                 ? range_format::disabled
+                             : is_map<T>::value ? range_format::map
+                             : is_set<T>::value ? range_format::set
+                                                : range_format::sequence> {};
+
+template <range_format K, typename R, typename Char, typename Enable = void>
+struct range_default_formatter;
+
+template <range_format K>
+using range_format_constant = std::integral_constant<range_format, K>;
+
+template <range_format K, typename R, typename Char>
+struct range_default_formatter<
+    K, R, Char,
+    enable_if_t<(K == range_format::sequence || K == range_format::map ||
+                 K == range_format::set)>> {
+  using range_type = detail::maybe_const_range<R>;
+  range_formatter<detail::uncvref_type<range_type>, Char> underlying_;
+
+  FMT_CONSTEXPR range_default_formatter() { init(range_format_constant<K>()); }
+
+  FMT_CONSTEXPR void init(range_format_constant<range_format::set>) {
+    underlying_.set_brackets(detail::string_literal<Char, '{'>{},
+                             detail::string_literal<Char, '}'>{});
+  }
+
+  FMT_CONSTEXPR void init(range_format_constant<range_format::map>) {
+    underlying_.set_brackets(detail::string_literal<Char, '{'>{},
+                             detail::string_literal<Char, '}'>{});
+    underlying_.underlying().set_brackets({}, {});
+    underlying_.underlying().set_separator(
+        detail::string_literal<Char, ':', ' '>{});
+  }
+
+  FMT_CONSTEXPR void init(range_format_constant<range_format::sequence>) {}
+
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+    return underlying_.parse(ctx);
+  }
+
+  template <typename FormatContext>
+  auto format(range_type& range, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return underlying_.format(range, ctx);
+  }
+};
+}  // namespace detail
+
+template <typename T, typename Char, typename Enable = void>
+struct range_format_kind
+    : conditional_t<
+          is_range<T, Char>::value, detail::range_format_kind_<T>,
+          std::integral_constant<range_format, range_format::disabled>> {};
+
+template <typename R, typename Char>
+struct formatter<
+    R, Char,
+    enable_if_t<conjunction<bool_constant<range_format_kind<R, Char>::value !=
+                                          range_format::disabled>
+// Workaround a bug in MSVC 2015 and earlier.
+#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
+                            ,
+                            detail::is_formattable_delayed<R, Char>
+#endif
+                            >::value>>
+    : detail::range_default_formatter<range_format_kind<R, Char>::value, R,
+                                      Char> {
+};
+
+template <typename Char, typename... T> struct tuple_join_view : detail::view {
+  const std::tuple<T...>& tuple;
+  basic_string_view<Char> sep;
+
+  tuple_join_view(const std::tuple<T...>& t, basic_string_view<Char> s)
+      : tuple(t), sep{s} {}
+};
+
+// Define FMT_TUPLE_JOIN_SPECIFIERS to enable experimental format specifiers
+// support in tuple_join. It is disabled by default because of issues with
+// the dynamic width and precision.
+#ifndef FMT_TUPLE_JOIN_SPECIFIERS
+#  define FMT_TUPLE_JOIN_SPECIFIERS 0
+#endif
+
+template <typename Char, typename... T>
+struct formatter<tuple_join_view<Char, T...>, Char> {
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+    return do_parse(ctx, std::integral_constant<size_t, sizeof...(T)>());
+  }
+
+  template <typename FormatContext>
+  auto format(const tuple_join_view<Char, T...>& value,
+              FormatContext& ctx) const -> typename FormatContext::iterator {
+    return do_format(value, ctx,
+                     std::integral_constant<size_t, sizeof...(T)>());
+  }
+
+ private:
+  std::tuple<formatter<typename std::decay<T>::type, Char>...> formatters_;
+
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto do_parse(ParseContext& ctx,
+                              std::integral_constant<size_t, 0>)
+      -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  template <typename ParseContext, size_t N>
+  FMT_CONSTEXPR auto do_parse(ParseContext& ctx,
+                              std::integral_constant<size_t, N>)
+      -> decltype(ctx.begin()) {
+    auto end = ctx.begin();
+#if FMT_TUPLE_JOIN_SPECIFIERS
+    end = std::get<sizeof...(T) - N>(formatters_).parse(ctx);
+    if (N > 1) {
+      auto end1 = do_parse(ctx, std::integral_constant<size_t, N - 1>());
+      if (end != end1)
+        FMT_THROW(format_error("incompatible format specs for tuple elements"));
+    }
+#endif
+    return end;
+  }
+
+  template <typename FormatContext>
+  auto do_format(const tuple_join_view<Char, T...>&, FormatContext& ctx,
+                 std::integral_constant<size_t, 0>) const ->
+      typename FormatContext::iterator {
+    return ctx.out();
+  }
+
+  template <typename FormatContext, size_t N>
+  auto do_format(const tuple_join_view<Char, T...>& value, FormatContext& ctx,
+                 std::integral_constant<size_t, N>) const ->
+      typename FormatContext::iterator {
+    auto out = std::get<sizeof...(T) - N>(formatters_)
+                   .format(std::get<sizeof...(T) - N>(value.tuple), ctx);
+    if (N > 1) {
+      out = std::copy(value.sep.begin(), value.sep.end(), out);
+      ctx.advance_to(out);
+      return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
+    }
+    return out;
+  }
+};
+
+namespace detail {
+// Check if T has an interface like a container adaptor (e.g. std::stack,
+// std::queue, std::priority_queue).
+template <typename T> class is_container_adaptor_like {
+  template <typename U> static auto check(U* p) -> typename U::container_type;
+  template <typename> static void check(...);
+
+ public:
+  static constexpr const bool value =
+      !std::is_void<decltype(check<T>(nullptr))>::value;
+};
+
+template <typename Container> struct all {
+  const Container& c;
+  auto begin() const -> typename Container::const_iterator { return c.begin(); }
+  auto end() const -> typename Container::const_iterator { return c.end(); }
+};
+}  // namespace detail
+
+template <typename T, typename Char>
+struct formatter<
+    T, Char,
+    enable_if_t<conjunction<detail::is_container_adaptor_like<T>,
+                            bool_constant<range_format_kind<T, Char>::value ==
+                                          range_format::disabled>>::value>>
+    : formatter<detail::all<typename T::container_type>, Char> {
+  using all = detail::all<typename T::container_type>;
+  template <typename FormatContext>
+  auto format(const T& t, FormatContext& ctx) const -> decltype(ctx.out()) {
+    struct getter : T {
+      static auto get(const T& t) -> all {
+        return {t.*(&getter::c)};  // Access c through the derived class.
+      }
+    };
+    return formatter<all>::format(getter::get(t), ctx);
+  }
+};
+
+FMT_BEGIN_EXPORT
+
+/**
+  \rst
+  Returns an object that formats `tuple` with elements separated by `sep`.
+
+  **Example**::
+
+    std::tuple<int, char> t = {1, 'a'};
+    fmt::print("{}", fmt::join(t, ", "));
+    // Output: "1, a"
+  \endrst
+ */
+template <typename... T>
+FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple, string_view sep)
+    -> tuple_join_view<char, T...> {
+  return {tuple, sep};
+}
+
+template <typename... T>
+FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple,
+                        basic_string_view<wchar_t> sep)
+    -> tuple_join_view<wchar_t, T...> {
+  return {tuple, sep};
+}
+
+/**
+  \rst
+  Returns an object that formats `initializer_list` with elements separated by
+  `sep`.
+
+  **Example**::
+
+    fmt::print("{}", fmt::join({1, 2, 3}, ", "));
+    // Output: "1, 2, 3"
+  \endrst
+ */
+template <typename T>
+auto join(std::initializer_list<T> list, string_view sep)
+    -> join_view<const T*, const T*> {
+  return join(std::begin(list), std::end(list), sep);
+}
+
+FMT_END_EXPORT
+FMT_END_NAMESPACE
+
+#endif  // FMT_RANGES_H_

dep/fmt/include/fmt/std.h

@@ -0,0 +1,537 @@
+// Formatting library for C++ - formatters for standard library types
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_STD_H_
+#define FMT_STD_H_
+
+#include <atomic>
+#include <bitset>
+#include <cstdlib>
+#include <exception>
+#include <memory>
+#include <thread>
+#include <type_traits>
+#include <typeinfo>
+#include <utility>
+#include <vector>
+
+#include "format.h"
+#include "ostream.h"
+
+#if FMT_HAS_INCLUDE(<version>)
+#  include <version>
+#endif
+// Checking FMT_CPLUSPLUS for warning suppression in MSVC.
+#if FMT_CPLUSPLUS >= 201703L
+#  if FMT_HAS_INCLUDE(<filesystem>)
+#    include <filesystem>
+#  endif
+#  if FMT_HAS_INCLUDE(<variant>)
+#    include <variant>
+#  endif
+#  if FMT_HAS_INCLUDE(<optional>)
+#    include <optional>
+#  endif
+#endif
+
+#if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE(<source_location>)
+#  include <source_location>
+#endif
+
+// GCC 4 does not support FMT_HAS_INCLUDE.
+#if FMT_HAS_INCLUDE(<cxxabi.h>) || defined(__GLIBCXX__)
+#  include <cxxabi.h>
+// Android NDK with gabi++ library on some architectures does not implement
+// abi::__cxa_demangle().
+#  ifndef __GABIXX_CXXABI_H__
+#    define FMT_HAS_ABI_CXA_DEMANGLE
+#  endif
+#endif
+
+// Check if typeid is available.
+#ifndef FMT_USE_TYPEID
+// __RTTI is for EDG compilers. In MSVC typeid is available without RTTI.
+#  if defined(__GXX_RTTI) || FMT_HAS_FEATURE(cxx_rtti) || FMT_MSC_VERSION || \
+      defined(__INTEL_RTTI__) || defined(__RTTI)
+#    define FMT_USE_TYPEID 1
+#  else
+#    define FMT_USE_TYPEID 0
+#  endif
+#endif
+
+// For older Xcode versions, __cpp_lib_xxx flags are inaccurately defined.
+#ifndef FMT_CPP_LIB_FILESYSTEM
+#  ifdef __cpp_lib_filesystem
+#    define FMT_CPP_LIB_FILESYSTEM __cpp_lib_filesystem
+#  else
+#    define FMT_CPP_LIB_FILESYSTEM 0
+#  endif
+#endif
+
+#ifndef FMT_CPP_LIB_VARIANT
+#  ifdef __cpp_lib_variant
+#    define FMT_CPP_LIB_VARIANT __cpp_lib_variant
+#  else
+#    define FMT_CPP_LIB_VARIANT 0
+#  endif
+#endif
+
+#if FMT_CPP_LIB_FILESYSTEM
+FMT_BEGIN_NAMESPACE
+
+namespace detail {
+
+template <typename Char, typename PathChar>
+auto get_path_string(const std::filesystem::path& p,
+                     const std::basic_string<PathChar>& native) {
+  if constexpr (std::is_same_v<Char, char> && std::is_same_v<PathChar, wchar_t>)
+    return to_utf8<wchar_t>(native, to_utf8_error_policy::replace);
+  else
+    return p.string<Char>();
+}
+
+template <typename Char, typename PathChar>
+void write_escaped_path(basic_memory_buffer<Char>& quoted,
+                        const std::filesystem::path& p,
+                        const std::basic_string<PathChar>& native) {
+  if constexpr (std::is_same_v<Char, char> &&
+                std::is_same_v<PathChar, wchar_t>) {
+    auto buf = basic_memory_buffer<wchar_t>();
+    write_escaped_string<wchar_t>(std::back_inserter(buf), native);
+    bool valid = to_utf8<wchar_t>::convert(quoted, {buf.data(), buf.size()});
+    FMT_ASSERT(valid, "invalid utf16");
+  } else if constexpr (std::is_same_v<Char, PathChar>) {
+    write_escaped_string<std::filesystem::path::value_type>(
+        std::back_inserter(quoted), native);
+  } else {
+    write_escaped_string<Char>(std::back_inserter(quoted), p.string<Char>());
+  }
+}
+
+}  // namespace detail
+
+FMT_EXPORT
+template <typename Char> struct formatter<std::filesystem::path, Char> {
+ private:
+  format_specs<Char> specs_;
+  detail::arg_ref<Char> width_ref_;
+  bool debug_ = false;
+  char path_type_ = 0;
+
+ public:
+  FMT_CONSTEXPR void set_debug_format(bool set = true) { debug_ = set; }
+
+  template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+    auto it = ctx.begin(), end = ctx.end();
+    if (it == end) return it;
+
+    it = detail::parse_align(it, end, specs_);
+    if (it == end) return it;
+
+    it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx);
+    if (it != end && *it == '?') {
+      debug_ = true;
+      ++it;
+    }
+    if (it != end && (*it == 'g')) path_type_ = *it++;
+    return it;
+  }
+
+  template <typename FormatContext>
+  auto format(const std::filesystem::path& p, FormatContext& ctx) const {
+    auto specs = specs_;
+#  ifdef _WIN32
+    auto path_string = !path_type_ ? p.native() : p.generic_wstring();
+#  else
+    auto path_string = !path_type_ ? p.native() : p.generic_string();
+#  endif
+
+    detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref_,
+                                                       ctx);
+    if (!debug_) {
+      auto s = detail::get_path_string<Char>(p, path_string);
+      return detail::write(ctx.out(), basic_string_view<Char>(s), specs);
+    }
+    auto quoted = basic_memory_buffer<Char>();
+    detail::write_escaped_path(quoted, p, path_string);
+    return detail::write(ctx.out(),
+                         basic_string_view<Char>(quoted.data(), quoted.size()),
+                         specs);
+  }
+};
+FMT_END_NAMESPACE
+#endif  // FMT_CPP_LIB_FILESYSTEM
+
+FMT_BEGIN_NAMESPACE
+FMT_EXPORT
+template <std::size_t N, typename Char>
+struct formatter<std::bitset<N>, Char> : nested_formatter<string_view> {
+ private:
+  // Functor because C++11 doesn't support generic lambdas.
+  struct writer {
+    const std::bitset<N>& bs;
+
+    template <typename OutputIt>
+    FMT_CONSTEXPR auto operator()(OutputIt out) -> OutputIt {
+      for (auto pos = N; pos > 0; --pos) {
+        out = detail::write<Char>(out, bs[pos - 1] ? Char('1') : Char('0'));
+      }
+
+      return out;
+    }
+  };
+
+ public:
+  template <typename FormatContext>
+  auto format(const std::bitset<N>& bs, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return write_padded(ctx, writer{bs});
+  }
+};
+
+FMT_EXPORT
+template <typename Char>
+struct formatter<std::thread::id, Char> : basic_ostream_formatter<Char> {};
+FMT_END_NAMESPACE
+
+#ifdef __cpp_lib_optional
+FMT_BEGIN_NAMESPACE
+FMT_EXPORT
+template <typename T, typename Char>
+struct formatter<std::optional<T>, Char,
+                 std::enable_if_t<is_formattable<T, Char>::value>> {
+ private:
+  formatter<T, Char> underlying_;
+  static constexpr basic_string_view<Char> optional =
+      detail::string_literal<Char, 'o', 'p', 't', 'i', 'o', 'n', 'a', 'l',
+                             '('>{};
+  static constexpr basic_string_view<Char> none =
+      detail::string_literal<Char, 'n', 'o', 'n', 'e'>{};
+
+  template <class U>
+  FMT_CONSTEXPR static auto maybe_set_debug_format(U& u, bool set)
+      -> decltype(u.set_debug_format(set)) {
+    u.set_debug_format(set);
+  }
+
+  template <class U>
+  FMT_CONSTEXPR static void maybe_set_debug_format(U&, ...) {}
+
+ public:
+  template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+    maybe_set_debug_format(underlying_, true);
+    return underlying_.parse(ctx);
+  }
+
+  template <typename FormatContext>
+  auto format(const std::optional<T>& opt, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    if (!opt) return detail::write<Char>(ctx.out(), none);
+
+    auto out = ctx.out();
+    out = detail::write<Char>(out, optional);
+    ctx.advance_to(out);
+    out = underlying_.format(*opt, ctx);
+    return detail::write(out, ')');
+  }
+};
+FMT_END_NAMESPACE
+#endif  // __cpp_lib_optional
+
+#ifdef __cpp_lib_source_location
+FMT_BEGIN_NAMESPACE
+FMT_EXPORT
+template <> struct formatter<std::source_location> {
+  template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+    return ctx.begin();
+  }
+
+  template <typename FormatContext>
+  auto format(const std::source_location& loc, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    auto out = ctx.out();
+    out = detail::write(out, loc.file_name());
+    out = detail::write(out, ':');
+    out = detail::write<char>(out, loc.line());
+    out = detail::write(out, ':');
+    out = detail::write<char>(out, loc.column());
+    out = detail::write(out, ": ");
+    out = detail::write(out, loc.function_name());
+    return out;
+  }
+};
+FMT_END_NAMESPACE
+#endif
+
+#if FMT_CPP_LIB_VARIANT
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template <typename T>
+using variant_index_sequence =
+    std::make_index_sequence<std::variant_size<T>::value>;
+
+template <typename> struct is_variant_like_ : std::false_type {};
+template <typename... Types>
+struct is_variant_like_<std::variant<Types...>> : std::true_type {};
+
+// formattable element check.
+template <typename T, typename C> class is_variant_formattable_ {
+  template <std::size_t... Is>
+  static std::conjunction<
+      is_formattable<std::variant_alternative_t<Is, T>, C>...>
+      check(std::index_sequence<Is...>);
+
+ public:
+  static constexpr const bool value =
+      decltype(check(variant_index_sequence<T>{}))::value;
+};
+
+template <typename Char, typename OutputIt, typename T>
+auto write_variant_alternative(OutputIt out, const T& v) -> OutputIt {
+  if constexpr (is_string<T>::value)
+    return write_escaped_string<Char>(out, detail::to_string_view(v));
+  else if constexpr (std::is_same_v<T, Char>)
+    return write_escaped_char(out, v);
+  else
+    return write<Char>(out, v);
+}
+
+}  // namespace detail
+
+template <typename T> struct is_variant_like {
+  static constexpr const bool value = detail::is_variant_like_<T>::value;
+};
+
+template <typename T, typename C> struct is_variant_formattable {
+  static constexpr const bool value =
+      detail::is_variant_formattable_<T, C>::value;
+};
+
+FMT_EXPORT
+template <typename Char> struct formatter<std::monostate, Char> {
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  template <typename FormatContext>
+  auto format(const std::monostate&, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return detail::write<Char>(ctx.out(), "monostate");
+  }
+};
+
+FMT_EXPORT
+template <typename Variant, typename Char>
+struct formatter<
+    Variant, Char,
+    std::enable_if_t<std::conjunction_v<
+        is_variant_like<Variant>, is_variant_formattable<Variant, Char>>>> {
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  template <typename FormatContext>
+  auto format(const Variant& value, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    auto out = ctx.out();
+
+    out = detail::write<Char>(out, "variant(");
+    FMT_TRY {
+      std::visit(
+          [&](const auto& v) {
+            out = detail::write_variant_alternative<Char>(out, v);
+          },
+          value);
+    }
+    FMT_CATCH(const std::bad_variant_access&) {
+      detail::write<Char>(out, "valueless by exception");
+    }
+    *out++ = ')';
+    return out;
+  }
+};
+FMT_END_NAMESPACE
+#endif  // FMT_CPP_LIB_VARIANT
+
+FMT_BEGIN_NAMESPACE
+FMT_EXPORT
+template <typename Char> struct formatter<std::error_code, Char> {
+  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  template <typename FormatContext>
+  FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    auto out = ctx.out();
+    out = detail::write_bytes(out, ec.category().name(), format_specs<Char>());
+    out = detail::write<Char>(out, Char(':'));
+    out = detail::write<Char>(out, ec.value());
+    return out;
+  }
+};
+
+FMT_EXPORT
+template <typename T, typename Char>
+struct formatter<
+    T, Char,  // DEPRECATED! Mixing code unit types.
+    typename std::enable_if<std::is_base_of<std::exception, T>::value>::type> {
+ private:
+  bool with_typename_ = false;
+
+ public:
+  FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+      -> decltype(ctx.begin()) {
+    auto it = ctx.begin();
+    auto end = ctx.end();
+    if (it == end || *it == '}') return it;
+    if (*it == 't') {
+      ++it;
+      with_typename_ = FMT_USE_TYPEID != 0;
+    }
+    return it;
+  }
+
+  template <typename OutputIt>
+  auto format(const std::exception& ex,
+              basic_format_context<OutputIt, Char>& ctx) const -> OutputIt {
+    format_specs<Char> spec;
+    auto out = ctx.out();
+    if (!with_typename_)
+      return detail::write_bytes(out, string_view(ex.what()), spec);
+
+#if FMT_USE_TYPEID
+    const std::type_info& ti = typeid(ex);
+#  ifdef FMT_HAS_ABI_CXA_DEMANGLE
+    int status = 0;
+    std::size_t size = 0;
+    std::unique_ptr<char, void (*)(void*)> demangled_name_ptr(
+        abi::__cxa_demangle(ti.name(), nullptr, &size, &status), &std::free);
+
+    string_view demangled_name_view;
+    if (demangled_name_ptr) {
+      demangled_name_view = demangled_name_ptr.get();
+
+      // Normalization of stdlib inline namespace names.
+      // libc++ inline namespaces.
+      //  std::__1::*       -> std::*
+      //  std::__1::__fs::* -> std::*
+      // libstdc++ inline namespaces.
+      //  std::__cxx11::*             -> std::*
+      //  std::filesystem::__cxx11::* -> std::filesystem::*
+      if (demangled_name_view.starts_with("std::")) {
+        char* begin = demangled_name_ptr.get();
+        char* to = begin + 5;  // std::
+        for (char *from = to, *end = begin + demangled_name_view.size();
+             from < end;) {
+          // This is safe, because demangled_name is NUL-terminated.
+          if (from[0] == '_' && from[1] == '_') {
+            char* next = from + 1;
+            while (next < end && *next != ':') next++;
+            if (next[0] == ':' && next[1] == ':') {
+              from = next + 2;
+              continue;
+            }
+          }
+          *to++ = *from++;
+        }
+        demangled_name_view = {begin, detail::to_unsigned(to - begin)};
+      }
+    } else {
+      demangled_name_view = string_view(ti.name());
+    }
+    out = detail::write_bytes(out, demangled_name_view, spec);
+#  elif FMT_MSC_VERSION
+    string_view demangled_name_view(ti.name());
+    if (demangled_name_view.starts_with("class "))
+      demangled_name_view.remove_prefix(6);
+    else if (demangled_name_view.starts_with("struct "))
+      demangled_name_view.remove_prefix(7);
+    out = detail::write_bytes(out, demangled_name_view, spec);
+#  else
+    out = detail::write_bytes(out, string_view(ti.name()), spec);
+#  endif
+    *out++ = ':';
+    *out++ = ' ';
+    return detail::write_bytes(out, string_view(ex.what()), spec);
+#endif
+  }
+};
+
+namespace detail {
+
+template <typename T, typename Enable = void>
+struct has_flip : std::false_type {};
+
+template <typename T>
+struct has_flip<T, void_t<decltype(std::declval<T>().flip())>>
+    : std::true_type {};
+
+template <typename T> struct is_bit_reference_like {
+  static constexpr const bool value =
+      std::is_convertible<T, bool>::value &&
+      std::is_nothrow_assignable<T, bool>::value && has_flip<T>::value;
+};
+
+#ifdef _LIBCPP_VERSION
+
+// Workaround for libc++ incompatibility with C++ standard.
+// According to the Standard, `bitset::operator[] const` returns bool.
+template <typename C>
+struct is_bit_reference_like<std::__bit_const_reference<C>> {
+  static constexpr const bool value = true;
+};
+
+#endif
+
+}  // namespace detail
+
+// We can't use std::vector<bool, Allocator>::reference and
+// std::bitset<N>::reference because the compiler can't deduce Allocator and N
+// in partial specialization.
+FMT_EXPORT
+template <typename BitRef, typename Char>
+struct formatter<BitRef, Char,
+                 enable_if_t<detail::is_bit_reference_like<BitRef>::value>>
+    : formatter<bool, Char> {
+  template <typename FormatContext>
+  FMT_CONSTEXPR auto format(const BitRef& v, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return formatter<bool, Char>::format(v, ctx);
+  }
+};
+
+FMT_EXPORT
+template <typename T, typename Char>
+struct formatter<std::atomic<T>, Char,
+                 enable_if_t<is_formattable<T, Char>::value>>
+    : formatter<T, Char> {
+  template <typename FormatContext>
+  auto format(const std::atomic<T>& v, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return formatter<T, Char>::format(v.load(), ctx);
+  }
+};
+
+#ifdef __cpp_lib_atomic_flag_test
+FMT_EXPORT
+template <typename Char>
+struct formatter<std::atomic_flag, Char> : formatter<bool, Char> {
+  template <typename FormatContext>
+  auto format(const std::atomic_flag& v, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return formatter<bool, Char>::format(v.test(), ctx);
+  }
+};
+#endif  // __cpp_lib_atomic_flag_test
+
+FMT_END_NAMESPACE
+#endif  // FMT_STD_H_

dep/fmt/include/fmt/xchar.h

@@ -0,0 +1,259 @@
+// Formatting library for C++ - optional wchar_t and exotic character support
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_XCHAR_H_
+#define FMT_XCHAR_H_
+
+#include <cwchar>
+
+#include "format.h"
+
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+#  include <locale>
+#endif
+
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template <typename T>
+using is_exotic_char = bool_constant<!std::is_same<T, char>::value>;
+
+inline auto write_loc(std::back_insert_iterator<detail::buffer<wchar_t>> out,
+                      loc_value value, const format_specs<wchar_t>& specs,
+                      locale_ref loc) -> bool {
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+  auto& numpunct =
+      std::use_facet<std::numpunct<wchar_t>>(loc.get<std::locale>());
+  auto separator = std::wstring();
+  auto grouping = numpunct.grouping();
+  if (!grouping.empty()) separator = std::wstring(1, numpunct.thousands_sep());
+  return value.visit(loc_writer<wchar_t>{out, specs, separator, grouping, {}});
+#endif
+  return false;
+}
+}  // namespace detail
+
+FMT_BEGIN_EXPORT
+
+using wstring_view = basic_string_view<wchar_t>;
+using wformat_parse_context = basic_format_parse_context<wchar_t>;
+using wformat_context = buffer_context<wchar_t>;
+using wformat_args = basic_format_args<wformat_context>;
+using wmemory_buffer = basic_memory_buffer<wchar_t>;
+
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+// Workaround broken conversion on older gcc.
+template <typename... Args> using wformat_string = wstring_view;
+inline auto runtime(wstring_view s) -> wstring_view { return s; }
+#else
+template <typename... Args>
+using wformat_string = basic_format_string<wchar_t, type_identity_t<Args>...>;
+inline auto runtime(wstring_view s) -> runtime_format_string<wchar_t> {
+  return {{s}};
+}
+#endif
+
+template <> struct is_char<wchar_t> : std::true_type {};
+template <> struct is_char<detail::char8_type> : std::true_type {};
+template <> struct is_char<char16_t> : std::true_type {};
+template <> struct is_char<char32_t> : std::true_type {};
+
+template <typename... T>
+constexpr auto make_wformat_args(const T&... args)
+    -> format_arg_store<wformat_context, T...> {
+  return {args...};
+}
+
+inline namespace literals {
+#if FMT_USE_USER_DEFINED_LITERALS && !FMT_USE_NONTYPE_TEMPLATE_ARGS
+constexpr auto operator""_a(const wchar_t* s, size_t)
+    -> detail::udl_arg<wchar_t> {
+  return {s};
+}
+#endif
+}  // namespace literals
+
+template <typename It, typename Sentinel>
+auto join(It begin, Sentinel end, wstring_view sep)
+    -> join_view<It, Sentinel, wchar_t> {
+  return {begin, end, sep};
+}
+
+template <typename Range>
+auto join(Range&& range, wstring_view sep)
+    -> join_view<detail::iterator_t<Range>, detail::sentinel_t<Range>,
+                 wchar_t> {
+  return join(std::begin(range), std::end(range), sep);
+}
+
+template <typename T>
+auto join(std::initializer_list<T> list, wstring_view sep)
+    -> join_view<const T*, const T*, wchar_t> {
+  return join(std::begin(list), std::end(list), sep);
+}
+
+template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
+auto vformat(basic_string_view<Char> format_str,
+             basic_format_args<buffer_context<type_identity_t<Char>>> args)
+    -> std::basic_string<Char> {
+  auto buf = basic_memory_buffer<Char>();
+  detail::vformat_to(buf, format_str, args);
+  return to_string(buf);
+}
+
+template <typename... T>
+auto format(wformat_string<T...> fmt, T&&... args) -> std::wstring {
+  return vformat(fmt::wstring_view(fmt), fmt::make_wformat_args(args...));
+}
+
+// Pass char_t as a default template parameter instead of using
+// std::basic_string<char_t<S>> to reduce the symbol size.
+template <typename S, typename... T, typename Char = char_t<S>,
+          FMT_ENABLE_IF(!std::is_same<Char, char>::value &&
+                        !std::is_same<Char, wchar_t>::value)>
+auto format(const S& format_str, T&&... args) -> std::basic_string<Char> {
+  return vformat(detail::to_string_view(format_str),
+                 fmt::make_format_args<buffer_context<Char>>(args...));
+}
+
+template <typename Locale, typename S, typename Char = char_t<S>,
+          FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
+                            detail::is_exotic_char<Char>::value)>
+inline auto vformat(
+    const Locale& loc, const S& format_str,
+    basic_format_args<buffer_context<type_identity_t<Char>>> args)
+    -> std::basic_string<Char> {
+  return detail::vformat(loc, detail::to_string_view(format_str), args);
+}
+
+template <typename Locale, typename S, typename... T, typename Char = char_t<S>,
+          FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
+                            detail::is_exotic_char<Char>::value)>
+inline auto format(const Locale& loc, const S& format_str, T&&... args)
+    -> std::basic_string<Char> {
+  return detail::vformat(loc, detail::to_string_view(format_str),
+                         fmt::make_format_args<buffer_context<Char>>(args...));
+}
+
+template <typename OutputIt, typename S, typename Char = char_t<S>,
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
+                            detail::is_exotic_char<Char>::value)>
+auto vformat_to(OutputIt out, const S& format_str,
+                basic_format_args<buffer_context<type_identity_t<Char>>> args)
+    -> OutputIt {
+  auto&& buf = detail::get_buffer<Char>(out);
+  detail::vformat_to(buf, detail::to_string_view(format_str), args);
+  return detail::get_iterator(buf, out);
+}
+
+template <typename OutputIt, typename S, typename... T,
+          typename Char = char_t<S>,
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
+                            detail::is_exotic_char<Char>::value)>
+inline auto format_to(OutputIt out, const S& fmt, T&&... args) -> OutputIt {
+  return vformat_to(out, detail::to_string_view(fmt),
+                    fmt::make_format_args<buffer_context<Char>>(args...));
+}
+
+template <typename Locale, typename S, typename OutputIt, typename... Args,
+          typename Char = char_t<S>,
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
+                            detail::is_locale<Locale>::value&&
+                                detail::is_exotic_char<Char>::value)>
+inline auto vformat_to(
+    OutputIt out, const Locale& loc, const S& format_str,
+    basic_format_args<buffer_context<type_identity_t<Char>>> args) -> OutputIt {
+  auto&& buf = detail::get_buffer<Char>(out);
+  vformat_to(buf, detail::to_string_view(format_str), args,
+             detail::locale_ref(loc));
+  return detail::get_iterator(buf, out);
+}
+
+template <typename OutputIt, typename Locale, typename S, typename... T,
+          typename Char = char_t<S>,
+          bool enable = detail::is_output_iterator<OutputIt, Char>::value &&
+                        detail::is_locale<Locale>::value &&
+                        detail::is_exotic_char<Char>::value>
+inline auto format_to(OutputIt out, const Locale& loc, const S& format_str,
+                      T&&... args) ->
+    typename std::enable_if<enable, OutputIt>::type {
+  return vformat_to(out, loc, detail::to_string_view(format_str),
+                    fmt::make_format_args<buffer_context<Char>>(args...));
+}
+
+template <typename OutputIt, typename Char, typename... Args,
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
+                            detail::is_exotic_char<Char>::value)>
+inline auto vformat_to_n(
+    OutputIt out, size_t n, basic_string_view<Char> format_str,
+    basic_format_args<buffer_context<type_identity_t<Char>>> args)
+    -> format_to_n_result<OutputIt> {
+  using traits = detail::fixed_buffer_traits;
+  auto buf = detail::iterator_buffer<OutputIt, Char, traits>(out, n);
+  detail::vformat_to(buf, format_str, args);
+  return {buf.out(), buf.count()};
+}
+
+template <typename OutputIt, typename S, typename... T,
+          typename Char = char_t<S>,
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
+                            detail::is_exotic_char<Char>::value)>
+inline auto format_to_n(OutputIt out, size_t n, const S& fmt, T&&... args)
+    -> format_to_n_result<OutputIt> {
+  return vformat_to_n(out, n, detail::to_string_view(fmt),
+                      fmt::make_format_args<buffer_context<Char>>(args...));
+}
+
+template <typename S, typename... T, typename Char = char_t<S>,
+          FMT_ENABLE_IF(detail::is_exotic_char<Char>::value)>
+inline auto formatted_size(const S& fmt, T&&... args) -> size_t {
+  auto buf = detail::counting_buffer<Char>();
+  detail::vformat_to(buf, detail::to_string_view(fmt),
+                     fmt::make_format_args<buffer_context<Char>>(args...));
+  return buf.count();
+}
+
+inline void vprint(std::FILE* f, wstring_view fmt, wformat_args args) {
+  auto buf = wmemory_buffer();
+  detail::vformat_to(buf, fmt, args);
+  buf.push_back(L'\0');
+  if (std::fputws(buf.data(), f) == -1)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
+}
+
+inline void vprint(wstring_view fmt, wformat_args args) {
+  vprint(stdout, fmt, args);
+}
+
+template <typename... T>
+void print(std::FILE* f, wformat_string<T...> fmt, T&&... args) {
+  return vprint(f, wstring_view(fmt), fmt::make_wformat_args(args...));
+}
+
+template <typename... T> void print(wformat_string<T...> fmt, T&&... args) {
+  return vprint(wstring_view(fmt), fmt::make_wformat_args(args...));
+}
+
+template <typename... T>
+void println(std::FILE* f, wformat_string<T...> fmt, T&&... args) {
+  return print(f, L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
+}
+
+template <typename... T> void println(wformat_string<T...> fmt, T&&... args) {
+  return print(L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
+}
+
+/**
+  Converts *value* to ``std::wstring`` using the default format for type *T*.
+ */
+template <typename T> inline auto to_wstring(const T& value) -> std::wstring {
+  return format(FMT_STRING(L"{}"), value);
+}
+FMT_END_EXPORT
+FMT_END_NAMESPACE
+
+#endif  // FMT_XCHAR_H_

dep/fmt/src/fmt.cc

@@ -0,0 +1,108 @@
+module;
+
+// Put all implementation-provided headers into the global module fragment
+// to prevent attachment to this module.
+#include <algorithm>
+#include <cerrno>
+#include <chrono>
+#include <climits>
+#include <cmath>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <exception>
+#include <filesystem>
+#include <fstream>
+#include <functional>
+#include <iterator>
+#include <limits>
+#include <locale>
+#include <memory>
+#include <optional>
+#include <ostream>
+#include <stdexcept>
+#include <string>
+#include <string_view>
+#include <system_error>
+#include <thread>
+#include <type_traits>
+#include <typeinfo>
+#include <utility>
+#include <variant>
+#include <vector>
+#include <version>
+
+#if __has_include(<cxxabi.h>)
+#  include <cxxabi.h>
+#endif
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#  include <intrin.h>
+#endif
+#if defined __APPLE__ || defined(__FreeBSD__)
+#  include <xlocale.h>
+#endif
+#if __has_include(<winapifamily.h>)
+#  include <winapifamily.h>
+#endif
+#if (__has_include(<fcntl.h>) || defined(__APPLE__) || \
+     defined(__linux__)) &&                            \
+    (!defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP))
+#  include <fcntl.h>
+#  include <sys/stat.h>
+#  include <sys/types.h>
+#  ifndef _WIN32
+#    include <unistd.h>
+#  else
+#    include <io.h>
+#  endif
+#endif
+#ifdef _WIN32
+#  if defined(__GLIBCXX__)
+#    include <ext/stdio_filebuf.h>
+#    include <ext/stdio_sync_filebuf.h>
+#  endif
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+#endif
+
+export module fmt;
+
+#define FMT_EXPORT export
+#define FMT_BEGIN_EXPORT export {
+#define FMT_END_EXPORT }
+
+// If you define FMT_ATTACH_TO_GLOBAL_MODULE
+//  - all declarations are detached from module 'fmt'
+//  - the module behaves like a traditional static library, too
+//  - all library symbols are mangled traditionally
+//  - you can mix TUs with either importing or #including the {fmt} API
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
+extern "C++" {
+#endif
+
+// All library-provided declarations and definitions must be in the module
+// purview to be exported.
+#include "fmt/args.h"
+#include "fmt/chrono.h"
+#include "fmt/color.h"
+#include "fmt/compile.h"
+#include "fmt/format.h"
+#include "fmt/os.h"
+#include "fmt/printf.h"
+#include "fmt/std.h"
+#include "fmt/xchar.h"
+
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
+}
+#endif
+
+// gcc doesn't yet implement private module fragments
+#if !FMT_GCC_VERSION
+module :private;
+#endif
+
+#include "format.cc"
+#include "os.cc"

dep/fmt/src/format.cc

@@ -0,0 +1,43 @@
+// Formatting library for C++
+//
+// Copyright (c) 2012 - 2016, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#include "fmt/format-inl.h"
+
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template FMT_API auto dragonbox::to_decimal(float x) noexcept
+    -> dragonbox::decimal_fp<float>;
+template FMT_API auto dragonbox::to_decimal(double x) noexcept
+    -> dragonbox::decimal_fp<double>;
+
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+template FMT_API locale_ref::locale_ref(const std::locale& loc);
+template FMT_API auto locale_ref::get<std::locale>() const -> std::locale;
+#endif
+
+// Explicit instantiations for char.
+
+template FMT_API auto thousands_sep_impl(locale_ref)
+    -> thousands_sep_result<char>;
+template FMT_API auto decimal_point_impl(locale_ref) -> char;
+
+template FMT_API void buffer<char>::append(const char*, const char*);
+
+template FMT_API void vformat_to(buffer<char>&, string_view,
+                                 typename vformat_args<>::type, locale_ref);
+
+// Explicit instantiations for wchar_t.
+
+template FMT_API auto thousands_sep_impl(locale_ref)
+    -> thousands_sep_result<wchar_t>;
+template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t;
+
+template FMT_API void buffer<wchar_t>::append(const wchar_t*, const wchar_t*);
+
+}  // namespace detail
+FMT_END_NAMESPACE

dep/fmt/src/os.cc

@@ -0,0 +1,402 @@
+// Formatting library for C++ - optional OS-specific functionality
+//
+// Copyright (c) 2012 - 2016, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+// Disable bogus MSVC warnings.
+#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER)
+#  define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "fmt/os.h"
+
+#include <climits>
+
+#if FMT_USE_FCNTL
+#  include <sys/stat.h>
+#  include <sys/types.h>
+
+#  ifdef _WRS_KERNEL    // VxWorks7 kernel
+#    include <ioLib.h>  // getpagesize
+#  endif
+
+#  ifndef _WIN32
+#    include <unistd.h>
+#  else
+#    ifndef WIN32_LEAN_AND_MEAN
+#      define WIN32_LEAN_AND_MEAN
+#    endif
+#    include <io.h>
+
+#    ifndef S_IRUSR
+#      define S_IRUSR _S_IREAD
+#    endif
+#    ifndef S_IWUSR
+#      define S_IWUSR _S_IWRITE
+#    endif
+#    ifndef S_IRGRP
+#      define S_IRGRP 0
+#    endif
+#    ifndef S_IWGRP
+#      define S_IWGRP 0
+#    endif
+#    ifndef S_IROTH
+#      define S_IROTH 0
+#    endif
+#    ifndef S_IWOTH
+#      define S_IWOTH 0
+#    endif
+#  endif  // _WIN32
+#endif    // FMT_USE_FCNTL
+
+#ifdef _WIN32
+#  include <windows.h>
+#endif
+
+namespace {
+#ifdef _WIN32
+// Return type of read and write functions.
+using rwresult = int;
+
+// On Windows the count argument to read and write is unsigned, so convert
+// it from size_t preventing integer overflow.
+inline unsigned convert_rwcount(std::size_t count) {
+  return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX;
+}
+#elif FMT_USE_FCNTL
+// Return type of read and write functions.
+using rwresult = ssize_t;
+
+inline std::size_t convert_rwcount(std::size_t count) { return count; }
+#endif
+}  // namespace
+
+FMT_BEGIN_NAMESPACE
+
+#ifdef _WIN32
+namespace detail {
+
+class system_message {
+  system_message(const system_message&) = delete;
+  void operator=(const system_message&) = delete;
+
+  unsigned long result_;
+  wchar_t* message_;
+
+  static bool is_whitespace(wchar_t c) noexcept {
+    return c == L' ' || c == L'\n' || c == L'\r' || c == L'\t' || c == L'\0';
+  }
+
+ public:
+  explicit system_message(unsigned long error_code)
+      : result_(0), message_(nullptr) {
+    result_ = FormatMessageW(
+        FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+            FORMAT_MESSAGE_IGNORE_INSERTS,
+        nullptr, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+        reinterpret_cast<wchar_t*>(&message_), 0, nullptr);
+    if (result_ != 0) {
+      while (result_ != 0 && is_whitespace(message_[result_ - 1])) {
+        --result_;
+      }
+    }
+  }
+  ~system_message() { LocalFree(message_); }
+  explicit operator bool() const noexcept { return result_ != 0; }
+  operator basic_string_view<wchar_t>() const noexcept {
+    return basic_string_view<wchar_t>(message_, result_);
+  }
+};
+
+class utf8_system_category final : public std::error_category {
+ public:
+  const char* name() const noexcept override { return "system"; }
+  std::string message(int error_code) const override {
+    auto&& msg = system_message(error_code);
+    if (msg) {
+      auto utf8_message = to_utf8<wchar_t>();
+      if (utf8_message.convert(msg)) {
+        return utf8_message.str();
+      }
+    }
+    return "unknown error";
+  }
+};
+
+}  // namespace detail
+
+FMT_API const std::error_category& system_category() noexcept {
+  static const detail::utf8_system_category category;
+  return category;
+}
+
+std::system_error vwindows_error(int err_code, string_view format_str,
+                                 format_args args) {
+  auto ec = std::error_code(err_code, system_category());
+  return std::system_error(ec, vformat(format_str, args));
+}
+
+void detail::format_windows_error(detail::buffer<char>& out, int error_code,
+                                  const char* message) noexcept {
+  FMT_TRY {
+    auto&& msg = system_message(error_code);
+    if (msg) {
+      auto utf8_message = to_utf8<wchar_t>();
+      if (utf8_message.convert(msg)) {
+        fmt::format_to(appender(out), FMT_STRING("{}: {}"), message,
+                       string_view(utf8_message));
+        return;
+      }
+    }
+  }
+  FMT_CATCH(...) {}
+  format_error_code(out, error_code, message);
+}
+
+void report_windows_error(int error_code, const char* message) noexcept {
+  report_error(detail::format_windows_error, error_code, message);
+}
+#endif  // _WIN32
+
+buffered_file::~buffered_file() noexcept {
+  if (file_ && FMT_SYSTEM(fclose(file_)) != 0)
+    report_system_error(errno, "cannot close file");
+}
+
+buffered_file::buffered_file(cstring_view filename, cstring_view mode) {
+  FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())),
+                nullptr);
+  if (!file_)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot open file {}"),
+                           filename.c_str()));
+}
+
+void buffered_file::close() {
+  if (!file_) return;
+  int result = FMT_SYSTEM(fclose(file_));
+  file_ = nullptr;
+  if (result != 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot close file")));
+}
+
+int buffered_file::descriptor() const {
+#if !defined(fileno)
+  int fd = FMT_POSIX_CALL(fileno(file_));
+#elif defined(FMT_HAS_SYSTEM)
+  // fileno is a macro on OpenBSD so we cannot use FMT_POSIX_CALL.
+#  define FMT_DISABLE_MACRO
+  int fd = FMT_SYSTEM(fileno FMT_DISABLE_MACRO(file_));
+#else
+  int fd = fileno(file_);
+#endif
+  if (fd == -1)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot get file descriptor")));
+  return fd;
+}
+
+#if FMT_USE_FCNTL
+#  ifdef _WIN32
+using mode_t = int;
+#  endif
+constexpr mode_t default_open_mode =
+    S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
+
+file::file(cstring_view path, int oflag) {
+#  if defined(_WIN32) && !defined(__MINGW32__)
+  fd_ = -1;
+  auto converted = detail::utf8_to_utf16(string_view(path.c_str()));
+  *this = file::open_windows_file(converted.c_str(), oflag);
+#  else
+  FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, default_open_mode)));
+  if (fd_ == -1)
+    FMT_THROW(
+        system_error(errno, FMT_STRING("cannot open file {}"), path.c_str()));
+#  endif
+}
+
+file::~file() noexcept {
+  // Don't retry close in case of EINTR!
+  // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+  if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0)
+    report_system_error(errno, "cannot close file");
+}
+
+void file::close() {
+  if (fd_ == -1) return;
+  // Don't retry close in case of EINTR!
+  // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+  int result = FMT_POSIX_CALL(close(fd_));
+  fd_ = -1;
+  if (result != 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot close file")));
+}
+
+long long file::size() const {
+#  ifdef _WIN32
+  // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
+  // is less than 0x0500 as is the case with some default MinGW builds.
+  // Both functions support large file sizes.
+  DWORD size_upper = 0;
+  HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
+  DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
+  if (size_lower == INVALID_FILE_SIZE) {
+    DWORD error = GetLastError();
+    if (error != NO_ERROR)
+      FMT_THROW(windows_error(GetLastError(), "cannot get file size"));
+  }
+  unsigned long long long_size = size_upper;
+  return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower;
+#  else
+  using Stat = struct stat;
+  Stat file_stat = Stat();
+  if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot get file attributes")));
+  static_assert(sizeof(long long) >= sizeof(file_stat.st_size),
+                "return type of file::size is not large enough");
+  return file_stat.st_size;
+#  endif
+}
+
+std::size_t file::read(void* buffer, std::size_t count) {
+  rwresult result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
+  if (result < 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot read from file")));
+  return detail::to_unsigned(result);
+}
+
+std::size_t file::write(const void* buffer, std::size_t count) {
+  rwresult result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
+  if (result < 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
+  return detail::to_unsigned(result);
+}
+
+file file::dup(int fd) {
+  // Don't retry as dup doesn't return EINTR.
+  // http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html
+  int new_fd = FMT_POSIX_CALL(dup(fd));
+  if (new_fd == -1)
+    FMT_THROW(system_error(
+        errno, FMT_STRING("cannot duplicate file descriptor {}"), fd));
+  return file(new_fd);
+}
+
+void file::dup2(int fd) {
+  int result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+  if (result == -1) {
+    FMT_THROW(system_error(
+        errno, FMT_STRING("cannot duplicate file descriptor {} to {}"), fd_,
+        fd));
+  }
+}
+
+void file::dup2(int fd, std::error_code& ec) noexcept {
+  int result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+  if (result == -1) ec = std::error_code(errno, std::generic_category());
+}
+
+void file::pipe(file& read_end, file& write_end) {
+  // Close the descriptors first to make sure that assignments don't throw
+  // and there are no leaks.
+  read_end.close();
+  write_end.close();
+  int fds[2] = {};
+#  ifdef _WIN32
+  // Make the default pipe capacity same as on Linux 2.6.11+.
+  enum { DEFAULT_CAPACITY = 65536 };
+  int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
+#  else
+  // Don't retry as the pipe function doesn't return EINTR.
+  // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
+  int result = FMT_POSIX_CALL(pipe(fds));
+#  endif
+  if (result != 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot create pipe")));
+  // The following assignments don't throw because read_fd and write_fd
+  // are closed.
+  read_end = file(fds[0]);
+  write_end = file(fds[1]);
+}
+
+buffered_file file::fdopen(const char* mode) {
+// Don't retry as fdopen doesn't return EINTR.
+#  if defined(__MINGW32__) && defined(_POSIX_)
+  FILE* f = ::fdopen(fd_, mode);
+#  else
+  FILE* f = FMT_POSIX_CALL(fdopen(fd_, mode));
+#  endif
+  if (!f) {
+    FMT_THROW(system_error(
+        errno, FMT_STRING("cannot associate stream with file descriptor")));
+  }
+  buffered_file bf(f);
+  fd_ = -1;
+  return bf;
+}
+
+#  if defined(_WIN32) && !defined(__MINGW32__)
+file file::open_windows_file(wcstring_view path, int oflag) {
+  int fd = -1;
+  auto err = _wsopen_s(&fd, path.c_str(), oflag, _SH_DENYNO, default_open_mode);
+  if (fd == -1) {
+    FMT_THROW(system_error(err, FMT_STRING("cannot open file {}"),
+                           detail::to_utf8<wchar_t>(path.c_str()).c_str()));
+  }
+  return file(fd);
+}
+#  endif
+
+#  if !defined(__MSDOS__)
+long getpagesize() {
+#    ifdef _WIN32
+  SYSTEM_INFO si;
+  GetSystemInfo(&si);
+  return si.dwPageSize;
+#    else
+#      ifdef _WRS_KERNEL
+  long size = FMT_POSIX_CALL(getpagesize());
+#      else
+  long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE));
+#      endif
+
+  if (size < 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot get memory page size")));
+  return size;
+#    endif
+}
+#  endif
+
+namespace detail {
+
+void file_buffer::grow(size_t) {
+  if (this->size() == this->capacity()) flush();
+}
+
+file_buffer::file_buffer(cstring_view path,
+                         const detail::ostream_params& params)
+    : file_(path, params.oflag) {
+  set(new char[params.buffer_size], params.buffer_size);
+}
+
+file_buffer::file_buffer(file_buffer&& other)
+    : detail::buffer<char>(other.data(), other.size(), other.capacity()),
+      file_(std::move(other.file_)) {
+  other.clear();
+  other.set(nullptr, 0);
+}
+
+file_buffer::~file_buffer() {
+  flush();
+  delete[] data();
+}
+}  // namespace detail
+
+ostream::~ostream() = default;
+#endif  // FMT_USE_FCNTL
+FMT_END_NAMESPACE

dep/hfsutils/build.mk

@@ -1,22 +0,0 @@
-HFSUTILS_SRCS = \
-	dep/hfsutils/libhfs/block.c \
-	dep/hfsutils/libhfs/btree.c \
-	dep/hfsutils/libhfs/data.c \
-	dep/hfsutils/libhfs/file.c \
-	dep/hfsutils/libhfs/hfs.c \
-	dep/hfsutils/libhfs/low.c \
-	dep/hfsutils/libhfs/medium.c \
-	dep/hfsutils/libhfs/memcmp.c \
-	dep/hfsutils/libhfs/node.c \
-	dep/hfsutils/libhfs/record.c \
-	dep/hfsutils/libhfs/version.c \
-	dep/hfsutils/libhfs/volume.c \
-	
-HFSUTILS_OBJS = $(patsubst %.c, $(OBJDIR)/%.o, $(HFSUTILS_SRCS))
-$(HFSUTILS_OBJS): CFLAGS += -Idep/hfsutils/libhfs
-HFSUTILS_LIB = $(OBJDIR)/libhfsutils.a
-$(HFSUTILS_LIB): $(HFSUTILS_OBJS)
-HFSUTILS_CFLAGS = -Idep/hfsutils/libhfs
-HFSUTILS_LDFLAGS =
-OBJS += $(HFSUTILS_OBJS)
-

dep/hfsutils/build.py

@@ -0,0 +1,25 @@
+from build.c import clibrary
+
+clibrary(
+    name="hfsutils",
+    srcs=[
+        "./libhfs/block.c",
+        "./libhfs/btree.c",
+        "./libhfs/data.c",
+        "./libhfs/file.c",
+        "./libhfs/hfs.c",
+        "./libhfs/low.c",
+        "./libhfs/medium.c",
+        "./libhfs/memcmp.c",
+        "./libhfs/node.c",
+        "./libhfs/record.c",
+        "./libhfs/version.c",
+        "./libhfs/volume.c",
+    ],
+    hdrs={
+        "apple.h": "./libhfs/apple.h",
+        "hfs.h": "./libhfs/hfs.h",
+        "libhfs.h": "./libhfs/libhfs.h",
+        "os.h": "./libhfs/os.h",
+    },
+)

dep/libusbp/build.mk

@@ -1,61 +0,0 @@
-LIBUSBP_SRCS = \
-	dep/libusbp/src/async_in_pipe.c \
-	dep/libusbp/src/error.c \
-	dep/libusbp/src/error_hresult.c \
-	dep/libusbp/src/find_device.c \
-	dep/libusbp/src/list.c \
-	dep/libusbp/src/pipe_id.c \
-	dep/libusbp/src/string.c \
-	
-ifeq ($(OS), Windows_NT)
-
-LIBUSBP_LDFLAGS += -lsetupapi -lwinusb -lole32 -luuid
-LIBUSBP_SRCS += \
-	dep/libusbp/src/windows/async_in_transfer_windows.c \
-	dep/libusbp/src/windows/device_instance_id_windows.c \
-	dep/libusbp/src/windows/device_windows.c \
-	dep/libusbp/src/windows/error_windows.c \
-	dep/libusbp/src/windows/generic_handle_windows.c \
-	dep/libusbp/src/windows/generic_interface_windows.c \
-	dep/libusbp/src/windows/interface_windows.c \
-	dep/libusbp/src/windows/list_windows.c \
-	dep/libusbp/src/windows/serial_port_windows.c \
-
-else ifeq ($(shell uname),Darwin)
-
-LIBUSBP_SRCS += \
-	dep/libusbp/src/mac/async_in_transfer_mac.c \
-	dep/libusbp/src/mac/device_mac.c \
-	dep/libusbp/src/mac/error_mac.c \
-	dep/libusbp/src/mac/generic_handle_mac.c \
-	dep/libusbp/src/mac/generic_interface_mac.c \
-	dep/libusbp/src/mac/iokit_mac.c \
-	dep/libusbp/src/mac/list_mac.c \
-	dep/libusbp/src/mac/serial_port_mac.c \
-
-else
-
-LIBUSBP_CFLAGS += $(shell pkg-config --cflags libudev)
-LIBUSBP_LDFLAGS += $(shell pkg-config --libs libudev)
-LIBUSBP_SRCS += \
-	dep/libusbp/src/linux/async_in_transfer_linux.c \
-	dep/libusbp/src/linux/device_linux.c \
-	dep/libusbp/src/linux/error_linux.c \
-	dep/libusbp/src/linux/generic_handle_linux.c \
-	dep/libusbp/src/linux/generic_interface_linux.c \
-	dep/libusbp/src/linux/list_linux.c \
-	dep/libusbp/src/linux/serial_port_linux.c \
-	dep/libusbp/src/linux/udev_linux.c \
-	dep/libusbp/src/linux/usbfd_linux.c \
-
-endif
-
-LIBUSBP_OBJS = $(patsubst %.c, $(OBJDIR)/%.o, $(LIBUSBP_SRCS))
-$(LIBUSBP_OBJS): private CFLAGS += -Idep/libusbp/src -Idep/libusbp/include
-LIBUSBP_LIB = $(OBJDIR)/libusbp.a
-LIBUSBP_CFLAGS += -Idep/libusbp/include
-LIBUSBP_LDFLAGS +=
-$(LIBUSBP_LIB): $(LIBUSBP_OBJS)
-OBJS += $(LIBUSBP_OBJS)
-
-

dep/libusbp/build.py

@@ -0,0 +1,72 @@
+from build.ab import emit
+from build.c import clibrary
+from build.pkg import package
+from config import windows, osx, unix
+
+srcs = [
+    "./src/async_in_pipe.c",
+    "./src/error.c",
+    "./src/error_hresult.c",
+    "./src/find_device.c",
+    "./src/list.c",
+    "./src/pipe_id.c",
+    "./src/string.c",
+    "./src/libusbp_internal.h",
+    "./include/libusbp_config.h",
+    "./include/libusbp.h",
+]
+deps = []
+ldflags = []
+
+if windows:
+    srcs += [
+        "./src/windows/async_in_transfer_windows.c",
+        "./src/windows/device_instance_id_windows.c",
+        "./src/windows/device_windows.c",
+        "./src/windows/error_windows.c",
+        "./src/windows/generic_handle_windows.c",
+        "./src/windows/generic_interface_windows.c",
+        "./src/windows/interface_windows.c",
+        "./src/windows/list_windows.c",
+        "./src/windows/serial_port_windows.c",
+    ]
+    ldflags += ["-lsetupapi", "-lwinusb", "-lole32", "-luuid"]
+elif osx:
+    srcs += [
+        "./src/mac/async_in_transfer_mac.c",
+        "./src/mac/device_mac.c",
+        "./src/mac/error_mac.c",
+        "./src/mac/generic_handle_mac.c",
+        "./src/mac/generic_interface_mac.c",
+        "./src/mac/iokit_mac.c",
+        "./src/mac/list_mac.c",
+        "./src/mac/serial_port_mac.c",
+    ]
+else:
+    package(name="udev_lib", package="libudev")
+    srcs += [
+        "./src/linux/async_in_transfer_linux.c",
+        "./src/linux/device_linux.c",
+        "./src/linux/error_linux.c",
+        "./src/linux/generic_handle_linux.c",
+        "./src/linux/generic_interface_linux.c",
+        "./src/linux/list_linux.c",
+        "./src/linux/serial_port_linux.c",
+        "./src/linux/udev_linux.c",
+        "./src/linux/usbfd_linux.c",
+    ]
+    deps += [".+udev_lib"]
+
+clibrary(
+    name="libusbp",
+    srcs=srcs,
+    cflags=["-Idep/libusbp/include", "-Idep/libusbp/src"],
+    caller_ldflags=ldflags,
+    deps=deps,
+    hdrs={
+        "libusbp_internal.h": "./src/libusbp_internal.h",
+        "libusbp_config.h": "./include/libusbp_config.h",
+        "libusbp.hpp": "./include/libusbp.hpp",
+        "libusbp.h": "./include/libusbp.h",
+    },
+)

dep/libusbp/include/libusbp.hpp

@@ -234,7 +234,7 @@ namespace libusbp
         }
 
         /*! Wrapper for libusbp_error_get_message(). */
-        virtual const char * what() const noexcept
+        virtual const char * what() const noexcept override
         {
             return libusbp_error_get_message(pointer);
         }

dep/libusbp/src/dummy.c

@@ -0,0 +1,103 @@
+
+// This file contains failing place-holders to make things compile
+// on otherwise unsupported platforms.
+
+#include <libusbp_internal.h>
+
+struct libusbp_device
+{
+    char* syspath;
+    char* serial_number; // may be NULL
+    uint16_t product_id;
+    uint16_t vendor_id;
+    uint16_t revision;
+};
+
+static libusbp_error* fail()
+{
+    return error_create("USB hardware is not supported on this platform");
+}
+
+libusbp_error* libusbp_device_copy(
+    const libusbp_device* source, libusbp_device** dest)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_generic_interface_create(const libusbp_device* device,
+    uint8_t interface_number,
+    bool composite __attribute__((unused)),
+    libusbp_generic_interface** gi)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_generic_handle_open(
+    const libusbp_generic_interface* gi, libusbp_generic_handle** handle)
+{
+    return fail();
+}
+
+void libusbp_device_free(libusbp_device* device) {}
+
+void libusbp_generic_handle_close(libusbp_generic_handle* handle) {}
+
+void libusbp_generic_interface_free(libusbp_generic_interface* gi) {}
+
+libusbp_error* libusbp_device_get_vendor_id(
+    const libusbp_device* device, uint16_t* vendor_id)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_device_get_product_id(
+    const libusbp_device* device, uint16_t* product_id)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_device_get_serial_number(
+    const libusbp_device* device, char** serial_number)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_write_pipe(libusbp_generic_handle* handle,
+    uint8_t pipe_id,
+    const void* data,
+    size_t size,
+    size_t* transferred)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_read_pipe(libusbp_generic_handle* handle,
+    uint8_t pipe_id,
+    void* data,
+    size_t size,
+    size_t* transferred)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_serial_port_create(const libusbp_device* device,
+    uint8_t interface_number,
+    bool composite,
+    libusbp_serial_port** port)
+{
+    return fail();
+}
+
+libusbp_error* libusbp_serial_port_get_name(
+    const libusbp_serial_port* port, char** name)
+{
+    return fail();
+}
+
+void libusbp_serial_port_free(libusbp_serial_port* port) {}
+
+libusbp_error* libusbp_list_connected_devices(
+    libusbp_device*** device_list, size_t* device_count)
+{
+    return fail();
+}

dep/snowhouse/build.py

@@ -0,0 +1,49 @@
+from build.c import cxxlibrary
+
+cxxlibrary(
+    name="snowhouse",
+    hdrs={
+        "snowhouse/snowhouse.h": "./include/snowhouse/snowhouse.h",
+        "snowhouse/assert.h": "./include/snowhouse/assert.h",
+        "snowhouse/fluent/fluent.h": "./include/snowhouse/fluent/fluent.h",
+        "snowhouse/fluent/constraintadapter.h": "./include/snowhouse/fluent/constraintadapter.h",
+        "snowhouse/fluent/constraintlist.h": "./include/snowhouse/fluent/constraintlist.h",
+        "snowhouse/fluent/operators/andoperator.h": "./include/snowhouse/fluent/operators/andoperator.h",
+        "snowhouse/fluent/operators/invalidexpressionexception.h": "./include/snowhouse/fluent/operators/invalidexpressionexception.h",
+        "snowhouse/fluent/operators/collections/collectionoperator.h": "./include/snowhouse/fluent/operators/collections/collectionoperator.h",
+        "snowhouse/fluent/operators/collections/collectionconstraintevaluator.h": "./include/snowhouse/fluent/operators/collections/collectionconstraintevaluator.h",
+        "snowhouse/fluent/operators/collections/atleastoperator.h": "./include/snowhouse/fluent/operators/collections/atleastoperator.h",
+        "snowhouse/fluent/operators/collections/noneoperator.h": "./include/snowhouse/fluent/operators/collections/noneoperator.h",
+        "snowhouse/fluent/operators/collections/atmostoperator.h": "./include/snowhouse/fluent/operators/collections/atmostoperator.h",
+        "snowhouse/fluent/operators/collections/alloperator.h": "./include/snowhouse/fluent/operators/collections/alloperator.h",
+        "snowhouse/fluent/operators/collections/exactlyoperator.h": "./include/snowhouse/fluent/operators/collections/exactlyoperator.h",
+        "snowhouse/fluent/operators/notoperator.h": "./include/snowhouse/fluent/operators/notoperator.h",
+        "snowhouse/fluent/operators/constraintoperator.h": "./include/snowhouse/fluent/operators/constraintoperator.h",
+        "snowhouse/fluent/operators/oroperator.h": "./include/snowhouse/fluent/operators/oroperator.h",
+        "snowhouse/fluent/expressionbuilder.h": "./include/snowhouse/fluent/expressionbuilder.h",
+        "snowhouse/assertionexception.h": "./include/snowhouse/assertionexception.h",
+        "snowhouse/exceptions.h": "./include/snowhouse/exceptions.h",
+        "snowhouse/stringizers.h": "./include/snowhouse/stringizers.h",
+        "snowhouse/macros.h": "./include/snowhouse/macros.h",
+        "snowhouse/constraints/equalscontainerconstraint.h": "./include/snowhouse/constraints/equalscontainerconstraint.h",
+        "snowhouse/constraints/islessthanorequaltoconstraint.h": "./include/snowhouse/constraints/islessthanorequaltoconstraint.h",
+        "snowhouse/constraints/equalsconstraint.h": "./include/snowhouse/constraints/equalsconstraint.h",
+        "snowhouse/constraints/isgreaterthanconstraint.h": "./include/snowhouse/constraints/isgreaterthanconstraint.h",
+        "snowhouse/constraints/fulfillsconstraint.h": "./include/snowhouse/constraints/fulfillsconstraint.h",
+        "snowhouse/constraints/endswithconstraint.h": "./include/snowhouse/constraints/endswithconstraint.h",
+        "snowhouse/constraints/constraints.h": "./include/snowhouse/constraints/constraints.h",
+        "snowhouse/constraints/haslengthconstraint.h": "./include/snowhouse/constraints/haslengthconstraint.h",
+        "snowhouse/constraints/startswithconstraint.h": "./include/snowhouse/constraints/startswithconstraint.h",
+        "snowhouse/constraints/equalswithdeltaconstraint.h": "./include/snowhouse/constraints/equalswithdeltaconstraint.h",
+        "snowhouse/constraints/isgreaterthanorequaltoconstraint.h": "./include/snowhouse/constraints/isgreaterthanorequaltoconstraint.h",
+        "snowhouse/constraints/containsconstraint.h": "./include/snowhouse/constraints/containsconstraint.h",
+        "snowhouse/constraints/islessthanconstraint.h": "./include/snowhouse/constraints/islessthanconstraint.h",
+        "snowhouse/constraints/isemptyconstraint.h": "./include/snowhouse/constraints/isemptyconstraint.h",
+        "snowhouse/constraints/expressions/andexpression.h": "./include/snowhouse/constraints/expressions/andexpression.h",
+        "snowhouse/constraints/expressions/orexpression.h": "./include/snowhouse/constraints/expressions/orexpression.h",
+        "snowhouse/constraints/expressions/expression_fwd.h": "./include/snowhouse/constraints/expressions/expression_fwd.h",
+        "snowhouse/constraints/expressions/notexpression.h": "./include/snowhouse/constraints/expressions/notexpression.h",
+        "snowhouse/constraints/expressions/expression.h": "./include/snowhouse/constraints/expressions/expression.h",
+        "snowhouse/stringize.h": "./include/snowhouse/stringize.h",
+    },
+)

dep/stb/build.mk

@@ -1,23 +0,0 @@
-ifeq ($(shell $(PKG_CONFIG) stb; echo $$?), 0)
-
-# System libstb present.
-
-STB_LIB =
-STB_CFLAGS := $(shell $(PKG_CONFIG) --cflags stb)
-STB_LDFLAGS := $(shell $(PKG_CONFIG) --libs stb)
-
-else
-
-STB_SRCS = \
-	dep/stb/stb_image_write.c
-	
-STB_OBJS = $(patsubst %.c, $(OBJDIR)/%.o, $(STB_SRCS))
-$(STB_OBJS): CFLAGS += -Idep/stb/src
-STB_LIB = $(OBJDIR)/libstb.a
-$(STB_LIB): $(STB_OBJS)
-STB_CFLAGS =
-STB_LDFLAGS = $(STB_LIB)
-OBJS += $(STB_OBJS)
-
-endif
-