Versioning.targets

<?xml version="1.0" encoding="utf-8"?>
<Project>
  <PropertyGroup>
    <_BuildNumber>$(OfficialBuildId)</_BuildNumber>
    <_BuildNumber Condition="'$(OfficialBuildId)' == ''">$([System.DateTime]::Now.ToString(yyyyMMdd)).1</_BuildNumber>
    <HasReleaseVersion>true</HasReleaseVersion>
    <HasReleaseVersion Condition="$(Version.Contains('preview')) or $(Version.Contains('beta'))">false</HasReleaseVersion>
    <_VersionInProject>$(Version)</_VersionInProject>
  </PropertyGroup>

  <PropertyGroup Condition="'$(SkipDevBuildNumber)' != 'true'">
    <!-- Strip off the prerelease version -->
    <_PrereleaseIndex>$(Version.IndexOf('-'))</_PrereleaseIndex>
    <Version Condition="$(_PrereleaseIndex) &gt; 0">$(Version.SubString(0, $(_PrereleaseIndex)))</Version>

    <Version>$(Version)-alpha.$(_BuildNumber)</Version>
  </PropertyGroup>

  <!--
    Specification: https://github.com/dotnet/arcade/blob/master/Documentation/CoreVersioning.md

    File version has 4 parts and needs to increase every official build. This is especially important when building MSIs.
    FILEMAJOR.FILEMINOR.FILEPATCH.FILEREVISION
    FILEMAJOR: Specified in the first part of VersionPrefix property.
    FILEMINOR: Set to MINOR * 100 + PATCH / 100, where MINOR and PATCH are the 2nd and 3rd parts of VersionPrefix property.
    FILEPATCH: Set to (PATCH % 100) * 100 + yy.
    FILEREVISION: Set to (50 * mm + dd) * 100 + r. This algorithm makes it easy to parse the month and date from FILEREVISION while staying in the range of a short which is what a version element uses.

    The versioning scheme defined below imposes the following limits on these version parts:
    - `MAJOR` version is in range [0-65535]
    - `MINOR` version is in range [0-654]
    - `PATCH` version is in range [0-9999]
  -->
  <Target Name="_InitializeFileVersion" BeforeTargets="GetAssemblyVersion">
    <Error Text="Expected _BuildNumber to match OfficialBuildId property!"
            Condition="'$(OfficialBuildId)' != '' and '$(OfficialBuildId)' != '$(_BuildNumber)'" />

    <Error Text="Invalid format of OfficialBuildId: '$(OfficialBuildId)' should be in form yyyyMMdd.r"
           Condition="$(OfficialBuildId) != '' and ($(OfficialBuildId.Length) &lt; 10 or '$(OfficialBuildId[8])' != '.')" />

    <!-- Compute an ever increasing build number based on official build id assuming it is passed -->
    <PropertyGroup Condition="'$(OfficialBuildId)' != ''">
      <_BuildNumberYY>$(_BuildNumber.Substring(2, 2))</_BuildNumberYY>
      <_BuildNumberMM>$(_BuildNumber.Substring(4, 2))</_BuildNumberMM>
      <_BuildNumberDD>$(_BuildNumber.Substring(6, 2))</_BuildNumberDD>
      <_BuildNumberR>$(_BuildNumber.Substring(9))</_BuildNumberR>

      <_VersionPrefixMajor>$(Version.Split('.')[0])</_VersionPrefixMajor>
      <_VersionPrefixMinor>$(Version.Split('.')[1])</_VersionPrefixMinor>
      <_VersionPrefixPatch>$(Version.Split(".-")[2])</_VersionPrefixPatch>

      <_FileMajor>$(_VersionPrefixMajor)</_FileMajor>

      <!-- MINOR * 100 + PATCH / 100 -->
      <_FileMinor>$([MSBuild]::Add(
                    $([MSBuild]::Multiply($(_VersionPrefixMinor), 100)),
                    $([System.Convert]::ToInt32($([MSBuild]::Divide($(_VersionPrefixPatch), 100))))
                  ))</_FileMinor>

      <!-- (PATCH % 100) * 100 + yy -->
      <_FilePatch>$([MSBuild]::Add(
                    $([MSBuild]::Multiply(
                      $([MSBuild]::Modulo($(_VersionPrefixPatch), 100)),
                      100)),
                    $(_BuildNumberYY)
                  ))</_FilePatch>

      <!-- mm * 5000 + dd * 100 + r -->
      <_FileRevision>$([MSBuild]::Add(
                        $([MSBuild]::Add(
                          $([MSBuild]::Multiply($(_BuildNumberMM), 5000)),
                          $([MSBuild]::Multiply($(_BuildNumberDD), 100))
                        )),
                        $(_BuildNumberR)
                     ))</_FileRevision>

      <FileVersion>$(_FileMajor).$(_FileMinor).$(_FilePatch).$(_FileRevision)</FileVersion>
    </PropertyGroup>
  </Target>
</Project>