Auto-bump version numbers in msbuild

autobump-snippet.csproj

  <UsingTask TaskName="BumpVersion" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
    <ParameterGroup>
      <ReleaseLevel ParameterType="System.String" Required="false" />
      <TargetFileName ParameterType="System.String" Required="true" />
    </ParameterGroup>
    <Task>
      <Reference Include="System.Core" />
      <Using Namespace="System" />
      <Using Namespace="System.IO" />
      <Using Namespace="System.Text.RegularExpressions" />
      <Code Type="Fragment" Language="cs">
        <![CDATA[
          /*
           * Read the version from the assembly file, increment it as directed, 
           * substitute it into the target file.
           */
          Console.WriteLine(String.Format("BumpVersion started: ReleaseLevel is '{0}'; Target is '{1}'", ReleaseLevel, TargetFileName));
          String assemblyFileName = "Properties\\AssemblyInfo.cs";
                    
          string assemblyVersionDeclaration = new Regex("\\[assembly: AssemblyVersion\\(\"[0-9.]*\"\\)\\]")
            .Match(File.ReadAllText(assemblyFileName)).ToString();

          IEnumerator matches = new Regex("[0-9]+").Matches(assemblyVersionDeclaration).GetEnumerator();
          List<int> elements = new List<int>();

          while (matches.MoveNext())
          {
            elements.Add(int.Parse(matches.Current.ToString()));
          }
          
          string oldVersion = String.Format("{0}\\.{1}\\.{2}\\.{3}", elements[0], elements[1], elements[2], elements[3]);
            
          Console.WriteLine(String.Format("\tOld version is {0}", oldVersion));

          switch (ReleaseLevel)
          {
            case "MAJOR":
              elements[0]++;
              for (int i = 1; i < 4; i++) { elements[i] = 0; }
              break;
            case "MINOR":
              elements[1]++;
              for (int i = 2; i < 4; i++) { elements[i] = 0; }
              break;
            case "PATCH":
              elements[2]++;
              elements[3] = 0;
              break;
            default:
              elements[3]++;
              break;
          }

          string newVersion = String.Format("{0}.{1}.{2}.{3}", elements[0], elements[1], elements[2], elements[3]);

          Console.WriteLine(String.Format("\tNew version is {0}", newVersion));
          
          File.WriteAllText(TargetFileName, 
            Regex.Replace( File.ReadAllText(TargetFileName),
              oldVersion,
              newVersion));
          ]]>
      </Code>
    </Task>
  </UsingTask>
  <PropertyGroup>
    <ReleaseLevel Condition=" '$(Configuration)' == 'Release' ">PATCH</ReleaseLevel>
  </PropertyGroup>
  <Target Name="Bump">
    <BumpVersion 
      ReleaseLevel="$(ReleaseLevel)"
      TargetFileName="..\SuiteCRMAddinSetup\SuiteCRMAddinSetup.isl"/>
    <BumpVersion 
      ReleaseLevel="$(ReleaseLevel)"
      TargetFileName="..\SuiteCrmClient\Properties\AssemblyInfo.cs"/>
    <BumpVersion 
      ReleaseLevel="$(ReleaseLevel)"
      TargetFileName="Properties\AssemblyInfo.cs"/>
  </Target>
  <PropertyGroup>  
    <BuildDependsOn>  
      Bump;
      $(BuildDependsOn);  
      Doxygen  
    </BuildDependsOn>  
  </PropertyGroup>