Directory.Build.targets

<Project>
  <Target
    Name="SetVersions"
    BeforeTargets="GetAssemblyVersion;GetPackageVersion;InitializeSourceControlInformation"
    Returns="Version;PackageVersion">
    <Exec
      Command="git for-each-ref --sort=taggerdate --format '%25(refname)' refs/tags"
      ConsoleToMSBuild="true"
      StandardOutputImportance="low">
      <Output TaskParameter="ConsoleOutput" ItemName="GitOutput"/>
    </Exec>
    <ItemGroup>
      <GitTag
        Condition="$([System.Text.RegularExpressions.Regex]::IsMatch(%(Filename)%(Extension), '^v\d+\.\d+\.\d+(-\w+)?$'))"
        Include="$([System.String]::Copy(%(GitOutput.Filename)%(GitOutput.Extension)).Substring(1))"/>
    </ItemGroup>
    <PropertyGroup>
      <PackageVersion>%(GitTag.Identity)</PackageVersion>
    </PropertyGroup>
    <PropertyGroup>
      <PackageVersion Condition="'$(PackageVersion)' == ''">0.0.0</PackageVersion>
      <Version>$(PackageVersion)</Version>
    </PropertyGroup>
    <Message
      Text="PackageVersion: $(PackageVersion)"
      Importance="high"/>
  </Target>

  <Target
    Name="SetPackageDescription"
    BeforeTargets="GenerateNuspec"
    Returns="PackageDescription">
    <PropertyGroup>
      <!-- Normalize \r\n to \n -->
      <PackageDescription>$([System.Text.RegularExpressions.Regex]::Replace($(PackageDescription.Trim()), '\r\n', '&#10;'))</PackageDescription>
      <!-- Strip leading space from each line -->
      <PackageDescription>$([System.Text.RegularExpressions.Regex]::Replace($(PackageDescription), '^[\t ]+', '', System.Text.RegularExpressions.RegexOptions.Multiline))</PackageDescription>
      <!-- Temporarily convert paragraph breaks (\n\n) to a placeholder (\r\r) --> 
      <PackageDescription>$([System.Text.RegularExpressions.Regex]::Replace($(PackageDescription), '\n\n', '&#13;&#13;', System.Text.RegularExpressions.RegexOptions.Multiline))</PackageDescription>
      <!-- Remaining \n should collapse into a single line -->
      <PackageDescription>$([System.Text.RegularExpressions.Regex]::Replace($(PackageDescription), '\n', ' ', System.Text.RegularExpressions.RegexOptions.Multiline))</PackageDescription>
      <!-- Convert placeholder \r\r back to \n\n -->
      <PackageDescription>$([System.Text.RegularExpressions.Regex]::Replace($(PackageDescription), '\r', '&#10;', System.Text.RegularExpressions.RegexOptions.Multiline))</PackageDescription>
    </PropertyGroup>
  </Target>
</Project>