build.xml

<?xml version="1.0" encoding="utf-8"?>
<project name="html2canvas" basedir="." default="build">
    <property name="src.dir" location="src"/>
    <property name="lib.dir" location="../lib"/>
    <property name="build.dir" location="build"/>
    <property name="dist"  location="dist"/>
    <property name="jquery-externs" value="jquery-1.4.4.externs.js"/>

    <property name="JS_NAME" value="html2canvas.js"/>
    <property name="JS_NAME_MIN" value="html2canvas.min.js"/>
    <property name="JQUERY_PLUGIN_NAME" value="jquery.plugin.html2canvas.js"/>
    <loadfile property="version" srcfile="version.txt" />

    <path id="sourcefiles">
        <filelist dir="${src.dir}">
            <file name="LICENSE"/>
            <file name="html2canvas-pre.txt"/>
            <file name="Core.js"/>
            <file name="Generate.js"/>
            <file name="Parse.js"/>
            <file name="Preload.js"/>
            <file name="Queue.js"/>
            <file name="Renderer.js"/>
            <file name="Util.js"/>
            <file name="renderers/Canvas.js"/>
            <file name="html2canvas-post.txt"/>
        </filelist>
    </path>

    <path id="jquery-plugin">
        <fileset dir="${src.dir}" includes="LICENSE"/>
        <fileset dir="${src.dir}/plugins" includes="${JQUERY_PLUGIN_NAME}"/>
    </path>

    <target name="build-dir">
        <echo>Creating directory ${build.dir}...</echo>
        <mkdir dir="${build.dir}"/>
    </target>

    <target name="plugins" depends="build-dir">
        <echo>Creating ${JQUERY_PLUGIN_NAME}...</echo>
        <concat fixlastline="yes" destfile="${build.dir}/${JQUERY_PLUGIN_NAME}">
            <path refid="jquery-plugin"/>
        </concat>
        <replaceregexp match="@VERSION@" replace="${version}" flags="g" byline="true" file="${build.dir}/${JQUERY_PLUGIN_NAME}" />
    </target>

    <pathconvert property="prettty-sourcefiles" pathsep="${line.separator}" refid="sourcefiles"></pathconvert>

    <target name="build" depends="build-dir,plugins">
        <echo>Concatenating files:${line.separator}${prettty-sourcefiles}${line.separator}into ${build.dir}/${JS_NAME}...</echo>
        <concat fixlastline="yes" destfile="${build.dir}/${JS_NAME}">
            <path refid="sourcefiles"/>
        </concat>
        <replaceregexp match="@VERSION@" replace="${version}" flags="g" byline="true" file="${build.dir}/${JS_NAME}" />
    </target>

    <taskdef name="jscomp" classname="com.google.javascript.jscomp.ant.CompileTask"
           classpath="${lib.dir}/compiler.jar" onerror="report"/>

    <target name="syntaxcheck" depends="build-dir,build">
        <jscomp compilationLevel="simple" warning="verbose"
            debug="false"
            output="${build.dir}/${JS_NAME_MIN}.tmp">
            <externs dir="${lib.dir}">
                 <file name="${jquery-externs}"/>
            </externs>
            <sources dir="${src.dir}">
                <!-- need to write them again here since the closure compiler doesn't understand filesets,... -->
                <file name="LICENSE"/>
                <file name="Core.js"/>
                <file name="Generate.js"/>
                <file name="Parse.js"/>
                <file name="Preload.js"/>
                <file name="Queue.js"/>
                <file name="Renderer.js"/>
                <file name="Util.js"/>
                <file name="renderers/Canvas.js"/>
            </sources>
        </jscomp>
        <delete file="${build.dir}/${JS_NAME_MIN}.tmp"></delete>
    </target>

    <target name="release" depends="build-dir,build,syntaxcheck">
        <jscomp compilationLevel="simple" warning="verbose"
            debug="false"
            output="${build.dir}/${JS_NAME_MIN}">
            <externs dir="${lib.dir}">
                 <file name="${jquery-externs}"/>
            </externs>
            <sources dir="${build.dir}">
                <file name="${JS_NAME}"/>
            </sources>
        </jscomp>
        <replaceregexp match="@VERSION@" replace="${version}" flags="g" byline="true" file="${build.dir}/${JS_NAME_MIN}" />
    </target>

    <target name="clean">
        <delete dir="${build.dir}"></delete>
    </target>
</project>