1 files changed, 36 insertions, 0 deletions
diff --git a/tools/DotNetOAuth.Versioning.targets b/tools/DotNetOAuth.Versioning.targets
new file mode 100644
index 0000000..35d5f71
--- /dev/null
+++ b/tools/DotNetOAuth.Versioning.targets
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">
+	<!-- Import this .targets file to automaticaly generate AssemblyVersion 
+	     attribute according to DotNetOAuth convention. -->
+	<PropertyGroup>
+		<ProjectRoot Condition="'$(ProjectRoot)' == ''">$(MSBuildProjectDirectory)\..\..</ProjectRoot>
+		<VersionCsFile>$(ProjectRoot)\obj\$(Configuration)\$(AssemblyName).Version.cs</VersionCsFile>
+	</PropertyGroup>
+
+	<Import Project="$(ProjectRoot)\lib\DotNetOpenId.BuildTasks.targets" />
+	<UsingTask AssemblyFile="$(ProjectRoot)\lib\MSBuild.Community.Tasks.dll" TaskName="AssemblyInfo"/>
+
+	<Target Name="GetBuildVersion">
+		<GetBuildVersion VersionFile="$(ProjectRoot)\src\version.txt" Condition=" '$(BuildVersion)' == '' ">
+			<Output TaskParameter="Version" PropertyName="BuildVersion" />
+		</GetBuildVersion>
+		<Message Text="Building version $(BuildVersion)"/>
+	</Target>
+	
+	<Target Name="BeforeBuild" DependsOnTargets="GetBuildVersion">
+		<PropertyGroup>
+			<NewVersionCsFile>$(VersionCsFile).new</NewVersionCsFile>
+		</PropertyGroup>
+		<MakeDir Directories="$(ProjectRoot)\obj\$(Configuration)"/>
+		<AssemblyInfo OutputFile="$(NewVersionCsFile)" CodeLanguage="C#" AssemblyVersion="$(BuildVersion)" />
+		<!-- Avoid applying the newly generated AssemblyInfo.cs file to the build 
+		     unless it has changed in order to allow for incremental building. -->
+		<CompareFiles OriginalItems="$(VersionCsFile)" NewItems="$(NewVersionCsFile)">
+			<Output TaskParameter="AreChanged" PropertyName="AssemblyInfoChanged" />
+		</CompareFiles>
+		<Copy Condition=" '$(AssemblyInfoChanged)' == 'true' " SourceFiles="$(NewVersionCsFile)" DestinationFiles="$(VersionCsFile)" />
+		<ItemGroup>
+			<Compile Include="$(VersionCsFile)" />
+		</ItemGroup>
+	</Target>
+</Project>