build-dependencies.xml

<?xml version="1.0"?>

<project name="Doctrine Dependency Management" default="resolve-dependencies" basedir=".">

    <property file="build-dependencies.properties" />
    <property name="download.dir" value="download"/>

    <target name="resolve-dependencies" description="Resolves the project dependencies.">
        <echo message="Resolving dependencies"/>
        <foreach list="${dependencies}" param="dependency" target="resolve-dependency" />
    </target>

    <target name="resolve-dependency">
        <fail unless="${dependency}.version" message="${dependency}.version not set."/>
        <fail unless="${dependency}.srcdir" message="${dependency}.srcdir not set."/>
        <fail unless="${dependency}.targetdir" message="${dependency}.targetdir not set."/>

        <property name="dependency.version" value="${${dependency}.version}"/>
        <property name="dependency.srcdir" value="${${dependency}.srcdir}"/>
        <property name="dependency.targetdir" value="${${dependency}.targetdir}"/>

        <echo message="${dependency.targetdir}"/>

        <!--
            Check out dependency. If ${dependency.targetdir} does not exist or versions dont match.
            When done, place version info file into ${dependency.targetdir}.
        -->
        <available file="${dependency.targetdir}" type="dir" property="target.dir.exists" />
        <if>
            <istrue value="${target.dir.exists}"/>
            <then>
                <property file="${dependency.targetdir}/current-version.properties" />
            </then>
        </if>
        <if>
            <or>
                <isfalse value="${target.dir.exists}" />
                <not><equals arg1="${dependency.version}" arg2="${current.version}"/></not>
            </or>
            <then>
                <echo message="Fetching dependency '${dependency}' at version '${dependency.version}'." />
                <delete dir="${download.dir}/${dependency}" includeemptydirs="true" />
                <mkdir dir="${download.dir}/${dependency}" />
                <exec command="git clone git://github.com/doctrine/${dependency}.git ${download.dir}/${dependency}" />
                <exec command="git checkout ${dependency.version}" dir="${download.dir}/${dependency}" />
                <delete dir="${dependency.targetdir}" includeemptydirs="true" />
                <copy todir="${dependency.targetdir}">
                    <fileset dir="${download.dir}/${dependency}/${dependency.srcdir}">
                        <include name="**" />
                    </fileset>
                </copy>
                <delete file="${dependency.targetdir}/current-version.properties" />
                <touch file="${dependency.targetdir}/current-version.properties"/>
                <append destFile="${dependency.targetdir}/current-version.properties" text="current.version=${dependency.version}"/>
                <delete dir="${download.dir}/${dependency}" includeemptydirs="true" />
            </then>
            <else>
                <echo message="Dependency ${dependency} is available in the correct version: ${dependency.version}." />
            </else>
        </if>
    </target>
</project>