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.
I am currently "manually" doing it through a prebuild-exec Task, using my cmdnetsvnrev tool, but if someone knows a better ccnet-integrated way of doing it, i'd be happy to hear :-)
I found this project on google code: http://code.google.com/p/svnrevisionlabeller/. This is CCNET plugin to generate the label in CCNET.
The DLL is tested with CCNET 1.3 but it works with CCNET 1.4 for me. I'm successfully using this plugin to label my build.
Now onto passing it to MSBuild...
You have basically two options. Either you write a simple script that will start and parse output from
svn.exe info --revision HEAD
to obtain revision number (then generating AssemblyInfo.cs is pretty much straight forward) or just use plugin for CCNET. Here it is:
SVN Revision Labeller is a plugin for CruiseControl.NET that allows you to generate CruiseControl labels for your builds, based upon the revision number of your Subversion working copy. This can be customised with a prefix and/or major/minor version numbers.
I prefer the first option because it's only roughly 20 lines of code:
using System;
using System.Diagnostics;
namespace SvnRevisionNumberParserSample
{
class Program
{
static void Main()
{
Process p = Process.Start(new ProcessStartInfo()
{
FileName = @"C:\Program Files\SlikSvn\bin\svn.exe", // path to your svn.exe
UseShellExecute = false,
RedirectStandardOutput = true,
Arguments = "info --revision HEAD",
WorkingDirectory = @"C:\MyProject" // path to your svn working copy
});
// command "svn.exe info --revision HEAD" will produce a few lines of output
p.WaitForExit();
// our line starts with "Revision: "
while (!p.StandardOutput.EndOfStream)
{
string line = p.StandardOutput.ReadLine();
if (line.StartsWith("Revision: "))
{
string revision = line.Substring("Revision: ".Length);
Console.WriteLine(revision); // show revision number on screen
break;
}
}
Console.Read();
}
}
}
If you prefer doing it on the MSBuild side over the CCNet config, looks like the MSBuild Community Tasks extension's (http://msbuildtasks.tigris.org/) SvnVersion task might do the trick.
Customizing csproj files to autogenerate AssemblyInfo.cs
http://www.codeproject.com/KB/dotnet/Customizing_csproj_files.aspxEvery time we create a new C# project, Visual Studio puts there the AssemblyInfo.cs file for us. The file defines the assembly meta-data like its version, configuration, or producer.
Found the above technique to auto-gen AssemblyInfo.cs using MSBuild. Will post sample shortly.
I have written a NAnt build file that handles parsing SVN information and creating properties. I then use those property values for a variety of build tasks, including setting the label on the build. I use this target combined with the SVN Revision Labeller mentioned by lubos hasko with great results.
<target name="svninfo" description="get the svn checkout information">
<property name="svn.infotempfile" value="${build.directory}\svninfo.txt" />
<exec program="${svn.executable}" output="${svn.infotempfile}">
<arg value="info" />
</exec>
<loadfile file="${svn.infotempfile}" property="svn.info" />
<delete file="${svn.infotempfile}" />
<property name="match" value="" />
<regex pattern="URL: (?'match'.*)" input="${svn.info}" />
<property name="svn.info.url" value="${match}"/>
<regex pattern="Repository Root: (?'match'.*)" input="${svn.info}" />
<property name="svn.info.repositoryroot" value="${match}"/>
<regex pattern="Revision: (?'match'\d+)" input="${svn.info}" />
<property name="svn.info.revision" value="${match}"/>
<regex pattern="Last Changed Author: (?'match'\w+)" input="${svn.info}" />
<property name="svn.info.lastchangedauthor" value="${match}"/>
<echo message="URL: ${svn.info.url}" />
<echo message="Repository Root: ${svn.info.repositoryroot}" />
<echo message="Revision: ${svn.info.revision}" />
<echo message="Last Changed Author: ${svn.info.lastchangedauthor}" />
</target>
@Justin, thanks for sharing your NAnt script.
I'm not using NAnt, but only MSBuild to compile my projects.
My approach is to use the aforementioned plugin for ccnet and a nant echo task to generate a VersionInfo.cs file containing nothing but the version attributes. I only have to include the VersionInfo.cs file into the build
The echo task simply outputs the string I give it to a file.
If there is a similar MSBuild task, you can use the same approach. Here's the small nant task I use:
<target name="version" description="outputs version number to VersionInfo.cs">
<echo file="${projectdir}/Properties/VersionInfo.cs">
[assembly: System.Reflection.AssemblyVersion("$(CCNetLabel)")]
[assembly: System.Reflection.AssemblyFileVersion("$(CCNetLabel)")]
</echo>
</target>
Try this:
<ItemGroup>
<VersionInfoFile Include="VersionInfo.cs"/>
<VersionAttributes>
[assembly: System.Reflection.AssemblyVersion("${CCNetLabel}")]
[assembly: System.Reflection.AssemblyFileVersion("${CCNetLabel}")]
</VersionAttributes>
</ItemGroup>
<Target Name="WriteToFile">
<WriteLinesToFile
File="@(VersionInfoFile)"
Lines="@(VersionAttributes)"
Overwrite="true"/>
</Target>
Please note that I'm not very intimate with MSBuild, so my script will probably not work out-of-the-box and need corrections...
Be careful. The structure used for build numbers is only a short so you have a ceiling on how high your revision can go.
In our case, we've already exceeded the limit.
If you attempt to put in the build number 99.99.99.599999, the file version property will actually come out as 99.99.99.10175.
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="$(MSBuildExtensionsPath)\MSBuildCommunityTasks\MSBuild.Community.Tasks.Targets"/>
<Target Name="BeforeBuild">
<AssemblyInfo Condition="'$(CCNetLabel)' != ''" CodeLanguage="CS" OutputFile="Properties\AssemblyInfo.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>
Based on skolimas solution I updated the NAnt script to also update the AssemblyFileVersion. Thanks to skolima for the code!
<target name="setversion" description="Sets the version number to current 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();
// replace assembly version
string replacement = "[assembly: AssemblyVersion(\"" + Project.Properties["label"] + "\")]";
contents = Regex.Replace(contents, @"\[assembly: AssemblyVersion\("".*""\)\]", replacement);
// replace assembly file version
replacement = "[assembly: AssemblyFileVersion(\"" + Project.Properties["label"] + "\")]";
contents = Regex.Replace(contents, @"\[assembly: AssemblyFileVersion\("".*""\)\]", replacement);
StreamWriter writer = new StreamWriter(Project.Properties["filename"], false);
writer.Write(contents);
writer.Close();
}
}
]]>
</code>
</script>
<foreach item="File" property="filename">
<in>
<items basedir="${srcDir}">
<include name="**\AssemblyInfo.cs"></include>
</items>
</in>
<do>
<setversion-task />
</do>
</foreach>
</target>
I'm not sure if this work with CCNET or not, but I've created an SVN version plug-in for the Build Version Increment project on CodePlex. This tool is pretty flexible and can be set to automatically create a version number for you using the svn revision. It doesn't require writing any code or editing xml, so yay!
I hope this is helps!