SetEnv.targets

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
	<PropertyGroup>
		<!--
			Date when Semantic Version was changed. 
			Update for every public release.
		-->
		<SemanticVersionDate>2016-9-28</SemanticVersionDate>
		<!--
			Pre-release version is used to distinguish internally built NuGet packages.
			Pre-release version = Minutes since semantic version was set, divided by 5 (to make it fit in a UInt16).
		-->
		<PreReleaseVersion>$([MSBuild]::Divide($([System.DateTime]::Now.Subtract($([System.DateTime]::Parse($(SemanticVersionDate)))).TotalMinutes), 5).ToString('F0'))</PreReleaseVersion>
	</PropertyGroup>
	
	<Target Name="SetEnvironmentVariables" Condition="'$(IsOfficialBuild)' != 'True'" BeforeTargets="BeforeBuild">
		<!--
			Variable DNX_BUILD_VERSION controls the pre-release version of the nuget package that is being generated.
			It replaces "*" from the version number present in project.json of all the projects corresponding to this solution.
		-->
		<SetEnv Name="DNX_BUILD_VERSION" Value="$(PreReleaseVersion)"/>
		<Message Importance="high" Text=" SetEnvironmentVariables executed on $(ProjectName)"></Message>
	</Target>

	<UsingTask	TaskName="SetEnv"
				TaskFactory="CodeTaskFactory"
				AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v12.0.dll">
		<ParameterGroup>
			<Name ParameterType="System.String" Required="true" />
			<Value ParameterType="System.String" Required="true" />
		</ParameterGroup>
		<Task>
			<Reference Include="System" />
			<Code Type="Fragment" Language="cs">
				<![CDATA[        
					Environment.SetEnvironmentVariable(Name, Value);
					
					Log.LogMessage (
						"Environment varible is set, name={0}, value:{1}", 
                        Name, 
						Value);
				]]>
			</Code>
		</Task>
	</UsingTask>
</Project>