GitVersion.targets

<Project>
  <Target Name="CalculateGitVersions" BeforeTargets="PrepareForBuild" Condition="$(UseGitVersion) == true">
    <PropertyGroup>
      <GitVersionTag>v0.0.1</GitVersionTag>
    </PropertyGroup>

    <Exec Command="git describe --tags --abbrev=0 --match v*" ConsoleToMSBuild="true" StandardOutputImportance="Low" ContinueOnError="true">
      <Output TaskParameter="ConsoleOutput" PropertyName="GitVersionTag" />
    </Exec>

    <PropertyGroup>      
      <GitVersion>$(GitVersionTag.Substring(1))</GitVersion>      
      <GitVersionMajor>$(GitVersion.Split('.')[0])</GitVersionMajor>
      <GitVersionMinor>$(GitVersion.Split('.')[1])</GitVersionMinor>
      <GitVersionPatch>$(GitVersion.Split('.')[2])</GitVersionPatch>

      <_CurrentYear>$([System.DateTime]::Now.ToString(yy))</_CurrentYear>
      <_CurrentMonth>$([System.DateTime]::Now.ToString(MM))</_CurrentMonth>
      <_CurrentPatch>0</_CurrentPatch>

      <!-- If the last version occured in the same Year/Month then add one to the patch. -->
      <_CurrentPatch Condition="'$(_CurrentYear)' == '$(GitVersionMajor)' And '$(_CurrentMonth)' == '$(GitVersionMinor)'">$([MSBuild]::Add($(GitVersionPatch), 1))</_CurrentPatch>
      
      <GitVersion>$(_CurrentYear).$(_CurrentMonth).$(_CurrentPatch)</GitVersion>
      <GitVersionMajor>$(_CurrentYear)</GitVersionMajor>
      <GitVersionMinor>$(_CurrentMonth)</GitVersionMinor>
      <GitVersionPatch>$(_CurrentPatch)</GitVersionPatch>

      <VersionPrefix>$(GitVersion)</VersionPrefix>
      <Version>$(GitVersion)</Version>
      <PackageVersion>$(GitVersion)</PackageVersion>
      <AssemblyVersion>$(GitVersion)</AssemblyVersion>
      <FileVersion>$(GitVersion)</FileVersion>
    </PropertyGroup>
    
    <Exec Command="git rev-parse --short HEAD" ConsoleToMSBuild="true" StandardOutputImportance="Low" ContinueOnError="true">
      <Output TaskParameter="ConsoleOutput" PropertyName="InformationalVersion" />
    </Exec>
  </Target>
</Project>