Add support for git in WSL

src/GitInfo/GitInfo.nuspec

@@ -46,5 +46,7 @@ The generated code contains only constants, so it can be used to construct your
     <file src="build\GitInfo.vb.pp" target="build" />
     <file src="build\GitInfo.targets" target="build" />
     <file src="build\GitInfo.xbuild" target="build" />
+    <file src="build\wslrun.cmd" target="build" />
+    <file src="build\wslpath.cmd" target="build" />
   </files>
 </package>

src/GitInfo/build/GitInfo.targets

@@ -146,7 +146,7 @@
 			<GitRoot>$(_GitOutput.Trim())</GitRoot>
 		</PropertyGroup>
 
-		<!-- Account for cygwin separately -->
+		<!-- Account for cygwin/WSL separately -->
 		<Exec Command='"$(CygPathExe)" -w "$(_GitOutput)"' 
 			  WorkingDirectory="$(GitInfoBaseDir)"
 			  StandardErrorImportance='high'
@@ -389,13 +389,25 @@
 						 Condition="'$(IsValidGitBaseVersion)' == 'False'" />
 
 		<PropertyGroup>
+			<_GitVersionFile>$(GitVersionFile)</_GitVersionFile>
 			<GitBaseVersionSource>$(GitVersionFile)</GitBaseVersionSource>
 			<GitSemVerSource>File</GitSemVerSource>
 		</PropertyGroup>
 
 		<Message Text="Using base version from version file $(GitVersionFile)'" Importance="normal" />
 
-		<Exec Command='$(GitExe) log -n 1 --format=format:$(_ShortShaFormat) "$(GitVersionFile)"'
+		<!-- Account for cygwin/WSL separately -->
+		<Exec Command='"$(CygPathExe)" -u "$(_GitVersionFile)"' 
+			  WorkingDirectory="$(GitRoot)"
+			  StandardErrorImportance='high'
+			  StandardOutputImportance='low'
+			  ConsoleToMSBuild='true'
+			  Condition="'$(MSBuildLastExitCode)' == '0' And '$(CygPathExe)' != ''">
+			<Output TaskParameter="ConsoleOutput" PropertyName="_GitVersionFile" />
+			<Output TaskParameter="ExitCode" PropertyName="MSBuildLastExitCode" />
+		</Exec>
+
+		<Exec Command='$(GitExe) log -n 1 --format=format:$(_ShortShaFormat) "$(_GitVersionFile)"'
 			  StandardErrorImportance="low"
 			  StandardOutputImportance="low"
 			  ConsoleToMSBuild="true"
@@ -415,6 +427,17 @@
 			<_GitCommitsRelativeTo Condition="'$([System.IO.Path]::GetDirectoryName($(GitVersionFile)))' != ''">"$([System.IO.Path]::GetDirectoryName("$(GitVersionFile)"))"</_GitCommitsRelativeTo>
 		</PropertyGroup>
 
+		<!-- Account for cygwin/WSL separately -->
+		<Exec Command='"$(CygPathExe)" -u $(_GitCommitsRelativeTo)' 
+			  WorkingDirectory="$(GitRoot)"
+			  StandardErrorImportance='high'
+			  StandardOutputImportance='low'
+			  ConsoleToMSBuild='true'
+			  Condition="'$(MSBuildLastExitCode)' == '0' And '$(CygPathExe)' != '' And '$(_GitCommitsRelativeTo)' != ''">
+			<Output TaskParameter="ConsoleOutput" PropertyName="_GitCommitsRelativeTo" />
+			<Output TaskParameter="ExitCode" PropertyName="MSBuildLastExitCode" />
+		</Exec>
+
 		<Exec Command='$(GitExe) rev-list --count --full-history "$(_GitLastBump)"..HEAD $(_GitCommitsRelativeTo)'
 			  Condition="$(MSBuildLastExitCode) == '0' And '$(_GitLastBump)' != ''"
 			  StandardErrorImportance="low"
@@ -786,7 +809,9 @@
 		<GitExe Condition="'$(GitExe)' == '' And Exists('C:\Program Files\Git\bin\git.exe')">"C:\Program Files\Git\bin\git.exe"</GitExe>
 		<GitExe Condition="'$(GitExe)' == '' And Exists('C:\Program Files (x86)\Git\bin\git.exe')">"C:\Program Files (x86)\Git\bin\git.exe"</GitExe>
 		<GitExe Condition="'$(GitExe)' == '' And Exists('C:\msysgit\bin\git.exe')">C:\msysgit\bin\git.exe</GitExe>
+		<GitExe Condition="'$(GitExe)' == '' And Exists('$(LOCALAPPDATA)\lxss\rootfs\usr\bin\git')">$(MSBuildThisFileDirectory)wslrun.cmd git</GitExe>
 		<GitExe Condition="'$(GitExe)' == '' And Exists('C:\cygwin\bin\git.exe')">C:\cygwin\bin\git.exe</GitExe>
+		<GitExe Condition="'$(GitExe)' == '' And Exists('C:\cygwin64\bin\git.exe')">C:\cygwin64\bin\git.exe</GitExe>
 		<!-- Ultimately, just try the exe and hope it exists in the PATH already -->
 		<GitExe Condition="'$(GitExe)' == ''">git.exe</GitExe>
 	</PropertyGroup>
@@ -804,7 +829,9 @@
 	============================================================
 	-->
 	<PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
+		<CygPathExe Condition="'$(CygPathExe)' == '' And Exists('$(LOCALAPPDATA)\lxss\rootfs\usr\bin\git') And $(GitExe.Contains('wslrun.cmd'))">$(MSBuildThisFileDirectory)wslpath.cmd</CygPathExe>
 		<CygPathExe Condition="'$(CygPathExe)' == '' And Exists('C:\cygwin\bin\cygpath.exe') And $(GitExe.Contains('cygwin'))">C:\cygwin\bin\cygpath.exe</CygPathExe>
+		<CygPathExe Condition="'$(CygPathExe)' == '' And Exists('C:\cygwin64\bin\cygpath.exe') And $(GitExe.Contains('cygwin64'))">C:\cygwin64\bin\cygpath.exe</CygPathExe>
 	</PropertyGroup>
 
 	<Import Project="GitInfo.xbuild" Condition="'$(MSBuildRuntimeVersion)' == ''" />

src/GitInfo/build/wslpath.cmd

@@ -0,0 +1,26 @@
+@echo off
+setlocal EnableExtensions EnableDelayedExpansion
+REM Usage: wslpath.cmd -w <linux path>
+REM Converts a path from the Linux /mnt/c/... format into Windows format.
+
+REM Usage: wslpath.cmd -u <windows path>
+REM Converts a path from Windows to Linux format.
+
+REM Both usages require `wslrun.cmd` in the same directory as this file.
+
+if exist %0\..\wslrun.cmd set WSLRUN="%0\..\wslrun.cmd"
+if exist %CD%\%0\..\wslrun.cmd set WSLRUN="%CD%\%0\..\wslrun.cmd"
+
+if "%1" == "-w" goto :towindows
+if "%1" == "-u" shift /1
+
+REM Convert path to Linux
+if exist "%1\*" (pushd %1) else (pushd %~dp1)
+if ERRORLEVEL 1 goto :eof
+%WSLRUN% pwd
+popd
+goto :eof
+
+:towindows
+REM Convert path to Windows
+%WSLRUN% cd "'%2'" ^&^& cmd.exe /c cd

src/GitInfo/build/wslrun.cmd

@@ -0,0 +1,11 @@
+@echo off
+REM Usage: wslrun.cmd <bash command>
+REM Runs the given command in the Windows Subsystem for Linux bash shell.
+
+REM Locate bash.exe
+REM 32/64 bits causes issues here because it actually redirects the System32 dir
+set BASH=bash.exe
+if exist C:\Windows\System32\bash.exe set BASH=C:\Windows\System32\bash.exe
+if exist C:\Windows\Sysnative\bash.exe set BASH=C:\Windows\Sysnative\bash.exe
+
+%BASH% -c "%*"