javascript eclipse yui eclipse-pdt yui-compressor

Automate Eclipse "Yui Compressor..."

Eclipse PDT has this handy built-in Yui Compressor in the context menu for files. But when building a webapp that uses multiple such files, it becomes tedious to compress the files manually after each update. It doesn't even remember what files compress to which filenames, so you have to enter that again.

Is it possible to automate this process easily within Eclipse, so you can click on "build" or something and all specified files will be compressed to their targets?

There is really a vacuum concerning documentation about this Yui feature in Eclipse.

I am using Eclipse Indigo 3.7.0 with PDT 3.0.0.v20110516-11, but both PDT and the Yui option have remained pretty similar since Galileo

-update-

Automation solutions, not Eclipse-native but close:

GNU make makefile

%-min.js: %.js
    ${java} -jar ${compressor} $< -o ${<:.js=-min.js}

Windows Batch

FOR %f IN (*.js) DO java -jar yuicompressor.jar %f -o deploy\%f

Linux Shellscript

ls -1 *.js | awk '{printf("java -jar yuicompressor.jar %s -o deploy/%s",$1,$1)}' | /bin/sh

ANT file

See here: http://www.ubik-ingenierie.com/ubikwiki/index.php?title=Minifying_JS/CSS
How do I paste html/xml here?

Also see this question.

Solution

Well, I actually downloaded the jar and created an ANT task to to CSS and JS compression. I work on Tomcat, so it includes tasks to upload stuff, clean work/ directory and things like that. Hope it helps.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE project>
<project name="MyProject" default="subir">

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <property name="project.name" value="MyProject" />

    <property name="src.dir" location="src" />
    <property name="web.dir" location="WebContent" />
    <property name="lib.dir" location="WebContent/WEB-INF/lib" />
    <property name="bin.dir" location="WebContent/WEB-INF/classes" />

    <property name="minify.dir" location="minified" />
    <property name="minify.sourcedir" location="${skin.dir}/resources/" />
    <!-- <property name="minify.sourcedir" location="${web.dir}/resources/" /> -->

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <property prefix="env" file="build.properties" />

    <path id="project.classpath">
        <pathelement location="${src.dir}" />
        <fileset dir="${lib.dir}">
            <include name="*.jar" />
        </fileset>
    </path>

    <path id="yui.classpath.minifier">
        <fileset dir="${lib.dir}">
            <include name="YUIAnt.jar" />
            <include name="yuicompressor-2.4.2.jar" />
        </fileset>
    </path>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="checkTomcatHome">
        <condition property="local.tomcathome.exists">
            <available file="${env.TOMCAT_PRUEBAS}" type="dir" />
    </condition>
    </target>

    <target name="subir" depends="checkTomcatHome" if="local.tomcathome.exists">

        <echo message="El servidor Tomcat destino existe, buscando archivos para copia en el proyecto y en en OsmoCore/WebContent..." />

        <copy todir="${env.TOMCAT_PRUEBAS}/webapps/${project.name}">
            <fileset dir="${web.dir}">
                <include name="**/*.*" />
            </fileset>
        </copy>

        <!--<echo message="Buscando archivos para copia en ${env.TOMCAT_PRUEBAS}/webapps/${project.name}/WEB-INF/classes..." />
        <copy todir="${env.TOMCAT_PRUEBAS}/webapps/${project.name}/WEB-INF/classes">
            <fileset dir="${bin.dir}">
                <include name="**/*.*" />
            </fileset>
        </copy>-->

    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="WAR">

        <delete file="${project.name}.war"/>
        <delete dir="TMP_WAR"/>
        <mkdir dir="TMP_WAR"/>


        <copy todir="TMP_WAR">
            <fileset dir="${web.dir}">
                <include name="**/*.*" />
            </fileset>
        </copy>

        <copy todir="TMP_WAR/WEB-INF/classes">
            <fileset dir="${bin.dir}">
                <include name="**/*.*" />
            </fileset>
        </copy>

        <delete dir="${project.name}.war"/>

        <zip destfile="${project.name}.war">
            <zipfileset dir="TMP_WAR">
                <include name="**/*.*" />
            </zipfileset>
        </zip>

        <delete dir="TMP_WAR"/>

    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="subirCompleto" depends="checkTomcatHome" if="local.tomcathome.exists">
        <echo message="El servidor Tomcat destino existe, buscando carpetas Work y ${project.name} en Webapps, para eliminar" />
        <delete dir="${env.TOMCAT_PRUEBAS}/work" />
        <delete dir="${env.TOMCAT_PRUEBAS}/webapps/${project.name}" />
        <antcall target="subir" />
    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="borrarWork" depends="checkTomcatHome" if="local.tomcathome.exists">
        <echo message="El servidor Tomcat destino existe, buscando carpeta Work a eliminar..." />
        <delete dir="${env.TOMCAT_PRUEBAS}/work"/>
    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="css.minify">

        <echo message="Creando directorio temporal ${minify.dir} (si no existe aún)..." />
        <mkdir dir="${minify.dir}" />

        <echo message="Borrando versión anterior de la carpeta temporal ${minify.dir}/css-min/..." />
        <delete dir="${minify.dir}/css-min/" />
        <echo message="Creando carpeta temporal ${minify.dir}/css-min/..." />
        <mkdir dir="${minify.dir}/css-min/" />

        <echo message="Copiando estructura de ${web.dir}/resources/styles/ en carpeta temporal..." />
        <copy todir="${minify.dir}/css-min/">
            <fileset dir="${minify.sourcedir}/styles/">
                <include name="**/*.*" />
            </fileset>
        </copy>

        <echo message="Borrando los CSS copiados a la carpeta temporal..." />
        <delete>
            <fileset dir="${minify.dir}/css-min/" >
                <include name="**/*.css"/>
            </fileset>
        </delete>

        <echo message="Comprimiendo!!!..." />
        <apply executable="java" parallel="false" dest="${minify.dir}/css-min/">
            <fileset dir="${minify.sourcedir}/styles/">
                <include name="**/*.css"/>
            </fileset>
            <arg line="-jar"/>
            <arg path="${lib.dir}/yui_compressor/yuicompressor-2.4.7.jar"/>
            <arg line="--line-break 0"/>
            <arg line="--type css"/>
            <arg line="--charset ISO-8859-1"/>
            <arg line="--nomunge"/>
            <!-- <arg line="- -verbose"/> -->
            <srcfile />
            <arg line="-o"/>
            <mapper type="glob" from="*.css" to="*.css"/>
            <targetfile />
        </apply>
    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="js.minify">

        <echo message="Creando directorio temporal ${minify.dir} (si no existe aún)..." />
        <mkdir dir="${minify.dir}" />

        <echo message="Borrando versión anterior de la carpeta temporal ${web.dir}/resources/js-min/..." />
        <delete dir="${minify.dir}/js-min/" />
        <echo message="Creando carpeta temporal ${web.dir}/resources/js-min/..." />
        <mkdir dir="${minify.dir}/js-min/" />

        <echo message="Copiando estructura de ${web.dir}/resources/scripts/ en carpeta temporal..." />
        <copy todir="${minify.dir}/js-min/">
            <fileset dir="${minify.sourcedir}/scripts/">
                <include name="**/*.*" />
            </fileset>
        </copy>

        <echo message="Borrando los JS copiados a la carpeta temporal..." />
        <delete>
            <fileset dir="${minify.dir}/js-min/" >
                <include name="**/*.js"/>
            </fileset>
        </delete>

        <echo message="Comprimiendo!!!..." />
        <apply executable="java" parallel="false" dest="${minify.dir}/js-min/">

            <fileset dir="${minify.sourcedir}/scripts">
                <include name="**/*.js"/>
            </fileset>
            <arg line="-jar"/>
            <arg path="${lib.dir}/yui_compressor/yuicompressor-2.4.7.jar"/>
            <arg line="--line-break 0"/>
            <arg line="--type js"/>
            <arg line="--charset ISO-8859-1"/>
            <arg line="--nomunge"/>
            <!--<arg line="- -verbose"/>-->
            <srcfile />
            <arg line="-o"/>
            <mapper type="glob" from="*.js" to="*.js"/>
            <targetfile />
        </apply>

    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="js.minified.subir" depends="checkTomcatHome" if="local.tomcathome.exists">
        <echo message="El servidor Tomcat destino existe, copiando archivos 'encogidos' a  ${env.TOMCAT_PRUEBAS}/webapps/${project.name}/resources/scripts..." />
        <copy todir="${env.TOMCAT_PRUEBAS}/webapps/${project.name}/resources/scripts" overwrite="yes">
            <fileset dir="${minify.dir}/js-min/">
                <include name="**/*.*" />
            </fileset>
        </copy>
    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="css.minified.subir" depends="checkTomcatHome" if="local.tomcathome.exists">
        <echo message="El servidor Tomcat destino existe, copiando archivos 'encogidos' a  ${env.TOMCAT_PRUEBAS}/webapps/${project.name}/resources/styles..." />
        <copy todir="${env.TOMCAT_PRUEBAS}/webapps/${project.name}/resources/styles" overwrite="yes">
            <fileset dir="${minify.dir}/css-min/">
                <include name="**/*.*" />
            </fileset>
        </copy>
    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="css.minified.process">
        <echo message="Reduciendo el tamaño de los archivos CSS..." />
        <antcall target="css.minify" />

        <echo message="Cargando los archivos CSS..." />
        <antcall target="css.minified.subir" />

        <echo message="Borrando la carpeta temporal..." />
        <delete dir="${minify.dir}" />
    </target>

    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

    <target name="js.minified.process">
        <echo message="Reduciendo el tamaño de los archivos JS..." />
        <antcall target="js.minify" />

        <echo message="Cargando los archivos JS..." />
        <antcall target="js.minified.subir" />

        <echo message="Borrando la carpeta temporal..." />
        <delete dir="${minify.dir}" />
    </target>
    <!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-->

</project>