msbuild - Use SVN Revision to label build in CCNET

Question

I am using CCNET on a sample project with SVN as my source control. CCNET is configured to create a build on every check in. CCNET uses MSBuild to build the source code.

I would like to use the latest revision number to generate AssemblyInfo.cs while compiling. How can I retrieve the latest revision from subversion and use the value in CCNET?

Edit: I'm not using NAnt - only MSBuild.

Answer 1

CruiseControl.Net 1.4.4 has now an Assembly Version Labeller, which generates version numbers compatible with .Net assembly properties.

In my project I have it configured as:

<labeller type="assemblyVersionLabeller" incrementOnFailure="true" major="1" minor="2"/>

(Caveat: assemblyVersionLabeller won't start generating svn revision based labels until an actual commit-triggered build occurs.)

and then consume this from my MSBuild projects with MSBuildCommunityTasks.AssemblyInfo :

<Import Project="$(MSBuildExtensionsPath)MSBuildCommunityTasksMSBuild.Community.Tasks.Targets"/>
<Target Name="BeforeBuild">
  <AssemblyInfo Condition="'$(CCNetLabel)' != ''" CodeLanguage="CS" OutputFile="PropertiesAssemblyInfo.cs" 
  AssemblyTitle="MyTitle" AssemblyCompany="MyCompany" AssemblyProduct="MyProduct"
  AssemblyCopyright="Copyright ?  2009" ComVisible="false" Guid="some-random-guid"
  AssemblyVersion="$(CCNetLabel)" AssemblyFileVersion="$(CCNetLabel)"/>
</Target>

For sake of completness, it's just as easy for projects using NAnt instead of MSBuild:

<target name="setversion" description="Sets the version number to CruiseControl.Net label.">
    <script language="C#">
        <references>
            <include name="System.dll" />
        </references>
        <imports>
            <import namespace="System.Text.RegularExpressions" />
        </imports>
        <code><![CDATA[
             [TaskName("setversion-task")]
             public class SetVersionTask : Task
             {
              protected override void ExecuteTask()
              {
               StreamReader reader = new StreamReader(Project.Properties["filename"]);
               string contents = reader.ReadToEnd();
               reader.Close();
               string replacement = "[assembly: AssemblyVersion("" + Project.Properties["CCNetLabel"] + "")]";
               string newText = Regex.Replace(contents, @"[assembly: AssemblyVersion("".*"")]", replacement);
               StreamWriter writer = new StreamWriter(Project.Properties["filename"], false);
               writer.Write(newText);
               writer.Close();
              }
             }
             ]]>
        </code>
    </script>
    <foreach item="File" property="filename">
        <in>
            <items basedir="..">
                <include name="**AssemblyInfo.cs"></include>
            </items>
        </in>
        <do>
            <setversion-task />
        </do>
    </foreach>
</target>