Sass Macros for Ant

sassmacros.xml

<?xml version="1.0"?>
<!--
# Sass Macros for Ant
# http://github.com/gbakernet
# Authored 2012 Glenn Baker; Licensed MIT */
 
<sass> Usage - Compile sass files 
 * jarpath - is path to jruby-complete.jar and gem-sass.jar
 * src - input
 * dest - output
eg. <scss jarpath="${pathToJars}" src="${input}" dest="${output}" />

<scss> Usage - Compile scss files
 / Same as <sass> 

<installsass> Usage - Create gem-sass.jar from a "gem install sass"
 * jarpath - is path to jruby-complete.jar
eg. <scssjar jarpath="${pathToJars}" />

Inspiration from these posts
 - http://stackoverflow.com/questions/1751479/sass-implementation-for-java
 - http://blog.nicksieger.com/articles/2009/01/10/jruby-1-1-6-gems-in-a-jar
-->
<project name="sassmacros" basedir=".">

	<macrodef name="sass">
		<attribute name="src"/>
		<attribute name="dest"/>
		<attribute name="jarpath"/>
		<attribute name="type" default="sass" />
		<sequential>
			<echo message="Compiling scss/sass files..." />
			<path id="JRuby">
				<fileset file="@{jarpath}/jruby-complete-1.6.7.2.jar"/>
				<fileset file="@{jarpath}/gem-sass.jar"/>
			</path>
		
			<property name="scss" value="@{src}/**/[^_]*.@{type}" />			
			<property name="scss.build" value="@{dest}" />
			<script language="ruby" classpathref="JRuby">
				<![CDATA[
					require 'rubygems'
					require 'sass'
					require 'sass/exec'
					
					files = Dir.glob($project.getProperty('scss'))
					Dir.mkdir($project.getProperty('scss.build')) unless File.exists?($project.getProperty('scss.build'))
					files.each do 
						| file |
						puts '[SCSS] Compiling ' + File.basename(file, ".*")  + '.scss'
						opts = Sass::Exec::Sass.new(["-t", "compressed", file, File.join($project.getProperty('scss.build'), File.basename(file, ".*") + ".css")])
						opts.parse
					end
				]]>
			</script>
			<echo message="Done compiling files!" />
		</sequential>
	</macrodef>
	
	<macrodef name="scss">
		<attribute name="src"/>
		<attribute name="dest"/>
		<attribute name="jarpath"/>
		<attribute name="type" default="scss" />
		<sequential>
			<sass jarpath="@{jarpath}" src="@{src}" dest="@{dest}" type="scss" />	
		</sequential>
	</macrodef>
	
	<macrodef name="installsass">
		<attribute name="jarpath"/>
		<sequential>
			<delete dir="@{jarpath}/sass-tmp"/>
			
			<echo message="Warning: ruby gems may require HTTP_PROXY environment variable" />
			
			<echo message="Fetching SASS Gem" />
			<java dir="@{jarpath}" fork="true" failonerror="true" jar="@{jarpath}/jruby-complete-1.6.7.2.jar">
				<arg value="-S"/>
				<arg value="gem"/>
				<arg value="install"/>
				<arg value="-i"/>
				<arg path="@{jarpath}/sass-tmp/sass"/>
				<arg value="sass"/>
				<arg value="--no-rdoc"/>
				<arg value="--no-ri"/>
			</java>

			<jar destfile="@{jarpath}/sass-tmp/gem-sass.jar" basedir="@{jarpath}/sass-tmp/sass" />
			
			<copy
				file="@{jarpath}/sass-tmp/gem-sass.jar"
				tofile="@{jarpath}/gem-sass.jar" overwrite="yes"/>
			
			<echo message="Created lib/gem-sass.jar" />
			
			<delete dir="@{jarpath}/sass-tmp"/>	
		</sequential>
	</macrodef>
</project>

Massively useful. Thanks for sharing this.