build.proj

<?xml version="1.0" encoding="utf-8"?>
<!--
   Copyright 2014 Clarius Consulting SA

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-->
<Project ToolsVersion="4.0"
         DefaultTargets="Build"
         xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

	<PropertyGroup>
        <AutoPush Condition="'$(AutoPush)' == ''">false</AutoPush>
		<BuildRoot>$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), .gitignore))</BuildRoot>
		<BuildRoot Condition="!HasTrailingSlash('$(BuildRoot)')">$(BuildRoot)\</BuildRoot>
        <DropDir>$(MSBuildThisFileDirectory)drop</DropDir>
		<_PackageVersion Condition="'$(PackageVersion)' == ''">0.1</_PackageVersion>
		<_PackageVersion Condition="'$(PackageVersion)' != ''">$(PackageVersion)</_PackageVersion>		
		<TrackFileAccess>false</TrackFileAccess>
		
		<!-- MyGet already provides a %nuget% environment variable with its own nuget path -->
		<nuget Condition="'$(nuget)' == ''">$(SolutionDir).nuget\nuget.exe</nuget>
	</PropertyGroup>
	
	<ItemGroup>
		<NuSpec Include="**\*.nuspec" />
		<PackageConfig Include="**\packages.config" />
	</ItemGroup>
		
    <Target Name="Build" DependsOnTargets="BuildNuGet;PushNuGet" />

	<Target Name="BuildNuGet" Inputs="@(NuSpec)" Outputs="%(Identity)-BATCH" DependsOnTargets="_DownloadNuGet;RestorePackages">      
		<PropertyGroup>
			<ReadmePath>%(NuSpec.RootDir)%(NuSpec.Directory)Readme.txt</ReadmePath>
			<Readme Condition="Exists('$(ReadmePath)')">$([System.IO.File]::ReadAllText('$(ReadmePath)'))</Readme>
		</PropertyGroup>

		<ItemGroup>
			<_NuSpecTransform Include="@(NuSpec)" Condition="'$(Readme)' != ''">
				<Find><![CDATA[<releaseNotes />|<releaseNotes/>|<releaseNotes>.*</releaseNotes>]]></Find>
				<ReplaceWith><![CDATA[<releaseNotes>$(Readme)</releaseNotes>]]></ReplaceWith>
				<Options>Singleline</Options>
			</_NuSpecTransform>
		</ItemGroup>

		<Message Text="Updating %(NuSpec.Filename)%(NuSpec.Extension) release notes from existing readme file"
				 Condition="'$(Readme)' != ''"
				 Importance="High" />
		<RegexTransform Items="@(_NuSpecTransform)" Condition="'$(Readme)' != ''" />

        <MakeDir Directories="$(DropDir)" Condition="!Exists('$(DropDir)')" />

        <Exec Command="&quot;$(nuget)&quot; pack -NoPackageAnalysis &quot;%(NuSpec.FullPath)&quot; -Version &quot;$(_PackageVersion)&quot; -OutputDirectory &quot;$(DropDir)&quot;"
              ContinueOnError="false" />
	</Target>

    <Target Name="PushNuGet" Condition="'$(AutoPush)' == 'true'">
        <Exec Command="&quot;$(nuget)&quot; push &quot;$(DropDir)\*&quot;" ContinueOnError="false" />
    </Target>
   
	<Target Name="RestorePackages" Condition="'@(PackageConfig)' != ''">
		<Message Text="Restoring NuGet packages..." Importance="High" />
		<Exec Command="$(nuget) restore %(PackageConfig.FullPath) -NonInteractive -Verbosity quiet" />
	</Target>

	<Target Name="_DownloadNuGet" Condition="!Exists('$(nuget)')">
		<MakeDir Directories="$(BuildRoot).nuget" />
		<DownloadNuGet OutputFilename="$(nuget)" />
	</Target>

	<UsingTask TaskName="DownloadNuGet" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
		<ParameterGroup>
			<OutputFilename ParameterType="System.String" Required="true" />
		</ParameterGroup>
		<Task>
			<Reference Include="System.Core" />
			<Using Namespace="System" />
			<Using Namespace="System.IO" />
			<Using Namespace="System.Net" />
			<Using Namespace="Microsoft.Build.Framework" />
			<Using Namespace="Microsoft.Build.Utilities" />
			<Code Type="Fragment" Language="cs">
				<![CDATA[
         try {
             OutputFilename = Path.GetFullPath(OutputFilename);

             Log.LogMessage("Downloading latest version of NuGet.exe...");
             WebClient webClient = new WebClient();
             webClient.DownloadFile("https://nuget.org/nuget.exe", OutputFilename);

             return true;
         }
         catch (Exception ex) {
             Log.LogErrorFromException(ex);
             return false;
         }
       ]]>
			</Code>
		</Task>
	</UsingTask>

	<!--
    ============================================================
				RegexTransform

    Transforms the input Items parameter by evaluating the 
    regular expression in their Find metadata and 
    replacing with their ReplaceWith metadata. Optional, the 
    options for the regular expression evaluation can be specified.
    
    Example input item:
            <RegexTransform Include="$(BuildRoot)Src\GlobalAssemblyInfo.cs">
                <Find>AssemblyFileVersion\(".*?"\)</Find>
                <ReplaceWith>AssemblyFileVersion("$(FileVersion)")</ReplaceWith>
                <Options>Multiline | IgnorePatternWhitespace</Options>
            </RegexTransform>
    
    Invoking the target:
        <RegexTransform Items="@(RegexTransform)" />   
    ============================================================
    -->
	<UsingTask TaskName="RegexTransform"
               TaskFactory="CodeTaskFactory"
               AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
		<ParameterGroup>
			<Items ParameterType="Microsoft.Build.Framework.ITaskItem[]" />
		</ParameterGroup>
		<Task>
			<Using Namespace="System.IO" />
			<Using Namespace="System.Text.RegularExpressions" />
			<Using Namespace="Microsoft.Build.Framework" />
			<Code Type="Fragment"
                  Language="cs">
				<![CDATA[
           foreach(var item in Items)
           {
             string fileName = item.GetMetadata("FullPath");
             string find = item.GetMetadata("Find");
             string replaceWith = item.GetMetadata("ReplaceWith");
             string optionsValue = item.GetMetadata("Options") ?? "";
             
             var options = string.IsNullOrWhiteSpace(optionsValue) ? 
                RegexOptions.None : (RegexOptions)Enum.Parse(typeof(RegexOptions), optionsValue.Replace('|', ','));

             if(!File.Exists(fileName))
             {
               Log.LogError("Could not find file: {0}", fileName);
               return false;
             }
             string content = File.ReadAllText(fileName);
             File.WriteAllText(
               fileName,
               Regex.Replace(
                 content,
                 find,
                 replaceWith, 
                 options
               )
             );
           }
         ]]>
			</Code>
		</Task>
	</UsingTask>

</Project>