<?xml version="1.0" encoding="ISO-8859-1"?>
 
<!--
   The <project> tag defines the ant project and 
   the default build task to run initiated. It 
   also defines the base directory which is set
   to the current folder this file lives in.
-->
<project name="sample_project" default="build" basedir=".">
   <!--
      The <property> tag defines variables we 
      are using to store the path to different 
      files and tools required and input/output 
      directories. You use those variables by
      like this: ${variable}
   -->
   <property name="BUILD_DIR"      value="build" />
   <property name="SOURCE_DIR"     value="src" />
   <property name="SHARED_DIR"     value="../shared" />
   <property name="EXTERNAL_DIR"   value="${SHARED_DIR}/external" />
   <property name="LOCAL_DIR"      value="${SHARED_DIR}/local" />
   <property name="RESOURCE_DIR"   value="${SHARED_DIR}/bin" />
   <property name="YUI_COMPRESSOR" value="${RESOURCE_DIR}/yui-compressor/yuicompressor-2.4.2.jar" />
   <!--
      The <target> tags defines an ant task.
      You have to give it a unique name and
      list other task (if any) this task 
      depends on. Ant will run those task first.
 
      This task below is the default task defined
      in the <project> tag. It will run all the
      dependents.
   -->
   <target name="build" depends="clean, bundle_javascript, compress_javascript" />
   <!--
      This is the "create JavaScript bundles" task
      used to create concatenated files for each 
      category defined and a main application bundle
      which contains all the code we need in one file.
   -->
   <target name="bundle_javascript">
      <!-- create the output directory for built files -->
      <mkdir dir="${BUILD_DIR}/js"/>
      <echo>Bundle JavaScript Files...</echo>
      <!-- external.js: all shared third party code -->
      <concat destfile="${BUILD_DIR}/js/external.js">
         <fileset dir="${EXTERNAL_DIR}/js" casesensitive="yes">
            <include name="**/*.js"/>
         </fileset>
      </concat>
      <!-- local.js: all shared local code -->
      <concat destfile="${BUILD_DIR}/js/local.js">
         <fileset dir="${LOCAL_DIR}/js" casesensitive="yes">
            <include name="**/*.js"/>
         </fileset>
      </concat>
      <!-- core.js: all the core project related code -->
      <concat destfile="${BUILD_DIR}/js/core.js">
         <fileset dir="${SOURCE_DIR}/js" casesensitive="yes">
            <include name="**/*.js"/>
         </fileset>
      </concat>
      <!-- main.js: the main big bundle of all the previous bundles -->
      <concat destfile="${BUILD_DIR}/js/main.js">
         <filelist dir="${BUILD_DIR}/js/" files="external.js, local.js, core.js"/>
      </concat>
      <echo>JavaScript Bundles Done!!!</echo>
   </target>
   <!--
      This task will compress the main.js bundle using YUI 
      compressor and rename the file main.compress.js
   -->
   <target name="compress_javascript" depends="bundle_javascript">
      <echo>Compressing JavaScript Files...</echo>
      <apply executable="java" parallel="false">
         <fileset dir="${BUILD_DIR}/js" includes="main.js"/>
         <arg line="-jar"/>            
         <arg path="${YUI_COMPRESSOR}"/>            
         <srcfile/>            
         <arg line="-o"/>            
         <mapper type="glob" from="*.js" to="${BUILD_DIR}/js/*.compress.js"/>            
         <targetfile/>
      </apply>
      <echo>JavaScript Compression Done!!!</echo>
   </target>
   <!--
      This task will clean out any previous build files by
      deleting the current build folder and re-creating it
   -->
   <target name="clean">
      <echo>Delete old build folder...</echo>
      <delete dir="build"/>
      <echo>Create new build folder...</echo>
      <mkdir dir="${BUILD_DIR}"/>
   </target>
</project>