SharedBuildProperties.props

<?xml version="1.0" encoding="utf-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup Condition="Exists('CompiledTemplates.snk')">
    <SignAssembly>true</SignAssembly>
    <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)CompiledTemplates.snk</AssemblyOriginatorKeyFile>
    <DefineConstants>$(DefineConstants);STRONGNAME</DefineConstants>
  </PropertyGroup>
  <Import Project="SharedBuildProperties.props.user" Condition="Exists('SharedBuildProperties.props.user')" />
  <Target Name="VersionInject" BeforeTargets="PrepareForBuild"
    Condition=" !$(DefineConstants.Contains('NOASSEMBLYVERSION')) ">

    <!-- get revision number -->
    <Exec Command="git.exe describe" ConsoleToMSBuild="true">
      <Output TaskParameter="ConsoleOutput" PropertyName="AVI_GitTag" />
    </Exec>
    <!-- get old version string -->
    <ReadLinesFromFile File="Properties\AssemblyInfoVersion.cs">
      <Output TaskParameter="Lines" PropertyName="AVI_Old"/>  
    </ReadLinesFromFile>
    <!-- get base version number and construct new version string -->
    <XmlPeek XmlInputPath="$(MSBuildThisFileDirectory)NuGet\$(MSBuildProjectName).nuspec" Query="/package/metadata/version/text()">
      <Output TaskParameter="Result" PropertyName="AVI_Ver" />
    </XmlPeek>
    <PropertyGroup>
      <AVI_Idx>$(AVI_Ver.IndexOf(`-`))</AVI_Idx>
    </PropertyGroup>
    <PropertyGroup Condition="$(AVI_Idx) &gt;= 0"><!-- pre-release -->
      <AVI_Suffix>$(AVI_Ver.Substring($(AVI_Idx)))</AVI_Suffix>
      <AVI_Ver>$(AVI_Ver.Substring(0,$(AVI_Idx)))</AVI_Ver>
    </PropertyGroup>
    <PropertyGroup>
      <AVI_Rgx>^$(AVI_Ver.Replace(`.`,`\.`))\.(\d+)$(AVI_Suffix)($|-\d+-g([0-9a-f]+))</AVI_Rgx>
      <AVI_Rev>$([System.Text.RegularExpressions.Regex]::Match($(AVI_GitTag),$(AVI_Rgx)).Groups.get_Item(1))</AVI_Rev>
      <AVI_Commit>$([System.Text.RegularExpressions.Regex]::Match($(AVI_GitTag),$(AVI_Rgx)).Groups.get_Item(3))</AVI_Commit>
      <AVI_Ver>$(AVI_Ver).$(AVI_Rev)</AVI_Ver>
    </PropertyGroup>
    <PropertyGroup Condition=" '$(AVI_Commit)' != '' ">
      <AVI_Commit>, commit $(AVI_Commit)</AVI_Commit>
    </PropertyGroup>
    <PropertyGroup>
      <AVI_New>[assembly:System.Reflection.AssemblyFileVersion(&quot;$(AVI_Ver)&quot;),<!--
                      -->System.Reflection.AssemblyInformationalVersion(&quot;$(AVI_Ver)$(AVI_Suffix)$(AVI_Commit)&quot;)]</AVI_New>
    </PropertyGroup>
    <Error Text="Tag $(AVI_GitTag) does not match .nuspec version $(AVI_Ver)" Condition=" '$(AVI_Rev)' == '' " />
    <!-- rewrite version file if version changed -->
    <WriteLinesToFile File="Properties\AssemblyInfoVersion.cs" Overwrite="true" Lines="$(AVI_New)"
      Condition=" '$(AVI_Old)' != '$(AVI_New)' " />
    <!-- create the item dynamically to prevent spurious rebuilds -->
    <ItemGroup>
      <Compile Include="Properties\AssemblyInfoVersion.cs" />
    </ItemGroup>
  </Target>
</Project>