build/targets/GitHash.props

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->

<!--
Copied from RepoToolset. Might be slightly modified to adjust for the current F# build system specifics if necessary.
-->

<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <!--

  Defines the following properties:
    GitHeadSha

  -->

  <PropertyGroup>
    <RepoRoot>$(MSBuildThisFileDirectory)..\..\</RepoRoot>
  </PropertyGroup>

  <Choose>
    <When Condition="'$(BUILD_SOURCEVERSION)' != ''">
      <PropertyGroup>
        <GitHeadSha>$(BUILD_SOURCEVERSION)</GitHeadSha>
      </PropertyGroup>
    </When>

    <When Condition="'$(BUILD_SOURCEVERSION)' == '' and '$(GIT_COMMIT)' != ''">
      <PropertyGroup>
        <GitHeadSha>$(GIT_COMMIT)</GitHeadSha>
      </PropertyGroup>
    </When>

    <When Condition="'$(CI)' != '1'">
      <PropertyGroup>
        <GitHeadSha>&lt;developer build&gt;</GitHeadSha>
      </PropertyGroup>
    </When>

    <Otherwise>
      <PropertyGroup>
        <GitHeadSha></GitHeadSha>
        <_DotGitDir>$(RepoRoot).git</_DotGitDir>
        <_HeadFileContent Condition="Exists('$(_DotGitDir)/HEAD')">$([System.IO.File]::ReadAllText('$(_DotGitDir)/HEAD').Trim())</_HeadFileContent>
        <_RefPath Condition="$(_HeadFileContent.StartsWith('ref: '))">$(_DotGitDir)/$(_HeadFileContent.Substring(5))</_RefPath>
        <GitHeadSha Condition="'$(_RefPath)' != '' and Exists('$(_RefPath)')">$([System.IO.File]::ReadAllText('$(_RefPath)').Trim())</GitHeadSha>
        <GitHeadSha Condition="'$(_HeadFileContent)' != '' and '$(_RefPath)' == ''">$(_HeadFileContent)</GitHeadSha>
      </PropertyGroup>
    </Otherwise>
  </Choose>

</Project>