Ant: Deleting files from ZIP

A common problem is deleting single files from a ZIP. An old workaround is “unzip+zip”. This snippet implements a macro. The <selectors/> statement in line 21 together with the <element> definition in line 14 is the placeholder for all selectors you pass in.

<project default="test">

    <target name="prepare">
        <mkdir dir="zip"/>
        <echo file="zip/one.txt"   message="one"/>
        <echo file="zip/two.txt"   message="two"/>
        <echo file="zip/three.txt" message="three"/>
        <zip destfile="zip.zip" basedir="zip"/>
        <delete dir="zip"/>
    </target>

    <macrodef name="delFromZip">
        <attribute name="zip"/>
        <element   name="selectors" implicit="true" optional="true"/>
        <sequential>
            <mkdir dir="__tmp__"/>
            <unzip dest="__tmp__" src="@{zip}"/>
            <delete file="@{zip}"/>
            <delete>
                <fileset dir="__tmp__">
                    <selectors/>
                </fileset>
            </delete>
            <zip destfile="@{zip}" basedir="__tmp__"/>
            <delete dir="__tmp__"/>
        </sequential>
    </macrodef>

    <target name="test">
        <delFromZip zip="zip.zip">
            <include name="two.*"/> 
        </delFromZip>
    </target>

</project>

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Schlagwörter: Ant, delete from zip, unzip

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