GitVersion.Targets

<?xml version="1.0" encoding="utf-8" ?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(PkgMSBuildTasks)\tools\MSBuild.Community.Tasks.Targets" Condition="Exists('$(PkgMSBuildTasks)\tools\MSBuild.Community.Tasks.Targets')" />

  <Target Name="CreateVersionInfo" BeforeTargets="CoreCompile">
    <GitDescribe>
      <Output TaskParameter="Tag" PropertyName="GitTag" />
      <Output TaskParameter="CommitHash" PropertyName="GitCommitHash" />
      <Output TaskParameter="CommitCount" PropertyName="GitCommitCount" />
    </GitDescribe>

    <GitCommitDate Format="yyyy">
      <Output TaskParameter="CommitDate" PropertyName="CopyrightYear" />
    </GitCommitDate>

    <PropertyGroup>
      <MajorVerPat>^v?([0-9]+).*$</MajorVerPat>
      <MinorVerPat>^v?[0-9]+[.]([0-9]+).*$</MinorVerPat>
      <PatchVerPat>^v?[0-9]+[.][0-9]+[.]([0-9]+).*$</PatchVerPat>
      <TruncGitHashPat>^([a-z0-9]{8}).*$</TruncGitHashPat>
    </PropertyGroup>

    <RegexReplace Input="$(GitTag)" Expression="$(MajorVerPat)" Replacement="TRUE">
      <Output TaskParameter="Output" PropertyName="HasMajorVer" />
    </RegexReplace>

    <RegexReplace Input="$(GitTag)" Expression="$(MajorVerPat)" Replacement="$1" Condition="$(HasMajorVer)=='TRUE'">
      <Output TaskParameter="Output" PropertyName="MajorVer" />
    </RegexReplace>

    <RegexReplace Input="$(GitTag)" Expression="$(MinorVerPat)" Replacement="TRUE">
      <Output TaskParameter="Output" PropertyName="HasMinorVer" />
    </RegexReplace>

    <RegexReplace Input="$(GitTag)" Expression="$(MinorVerPat)" Replacement="$1" Condition="$(HasMinorVer)=='TRUE'">
      <Output TaskParameter="Output" PropertyName="MinorVer" />
    </RegexReplace>

    <RegexReplace Input="$(GitTag)" Expression="$(PatchVerPat)" Replacement="TRUE">
      <Output TaskParameter="Output" PropertyName="HasPatchVer" />
    </RegexReplace>

    <RegexReplace Input="$(GitTag)" Expression="$(PatchVerPat)" Replacement="$1" Condition="$(HasPatchVer)=='TRUE'">
      <Output TaskParameter="Output" PropertyName="PatchVer" />
    </RegexReplace>

    <RegexReplace Input="$(GitCommitHash)" Expression="$(TruncGitHashPat)" Replacement="TRUE">
      <Output TaskParameter="Output" PropertyName="HasTruncGitHash" />
    </RegexReplace>

    <RegexReplace Input="$(GitCommitHash)" Expression="$(TruncGitHashPat)" Replacement="$1" Condition="$(HasTruncGitHash)=='TRUE'">
      <Output TaskParameter="Output" PropertyName="TruncGitHash" />
    </RegexReplace>

    <PropertyGroup>
      <MajorVer Condition="'$(MajorVer)'==''">0</MajorVer>
      <MinorVer Condition="'$(MinorVer)'==''">0</MinorVer>
      <PatchVer Condition="'$(PatchVer)'==''">0</PatchVer>
      <GitTag Condition="'$(GitTag)'==''">?.?</GitTag>
      <GitCommitCount Condition="'$(GitCommitCount)'==''">0</GitCommitCount>
      <TruncGitHash Condition="'$(TruncGitHash)'==''">Unknown</TruncGitHash>
      <CopyrightYear Condition="'$(CopyrightYear)'==''">0000</CopyrightYear>
      <InfoVersion>$(GitTag)-$(TruncGitHash)</InfoVersion>
      <InfoVersion Condition="'$(GitCommitCount)'!='0'">$(GitTag)-$(GitCommitCount)-$(TruncGitHash)</InfoVersion>
    </PropertyGroup>

    <ReadLinesFromFile File="$(IntermediateOutputPath)lastcommit.txt">
      <Output TaskParameter="Lines" PropertyName="LastCommit"/>
    </ReadLinesFromFile>

    <AssemblyInfo Condition="'$(GitCommitHash)'!='$(LastCommit)'"
      CodeLanguage="CS" OutputFile="Properties\VersionInfo.cs"
      AssemblyVersion="$(MajorVer).$(MinorVer).$(PatchVer).0"
      AssemblyFileVersion="$(MajorVer).$(MinorVer).$(PatchVer).$(GitCommitCount)"
      AssemblyInformationalVersion="$(InfoVersion)"
      AssemblyCopyright="Copyright © 2007-$(CopyrightYear)" />

    <WriteLinesToFile File="$(IntermediateOutputPath)lastcommit.txt"
                      Lines="$(GitCommitHash)" Overwrite="true" />
  </Target>
</Project>