.build/build-git.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

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  distributed under the License is distributed on an "AS IS" BASIS,
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  See the License for the specific language governing permissions and
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-->
<project basedir="." name="apache-cassandra-git-tasks"
         xmlns:if="ant:if">

    <target name="_get-git-sha">
        <exec executable="git" osfamily="unix" dir="${basedir}" logError="false" failonerror="false" failifexecutionfails="false" resultproperty="git.is-available.exit-code">
            <arg value="rev-parse"/>
            <arg value="--is-inside-work-tree"/>
            <redirector outputproperty="git.is-available.output"/>
        </exec>
        <condition property="git.is-available" else="false">
            <equals arg1="${git.is-available.exit-code}" arg2="0"/>
        </condition>
        <echo message="git.is-available=${git.is-available}"/>

        <exec if:true="${git.is-available}" executable="git" osfamily="unix" dir="${basedir}" logError="true" failonerror="false" failifexecutionfails="false">
            <arg value="describe"/>
            <arg value="--match=''"/>
            <arg value="--always"/>
            <arg value="--abbrev=0"/>
            <arg value="--dirty"/>
            <redirector outputproperty="git.sha"/>
        </exec>
        <property name="git.sha" value="Unknown"/>
        <echo level="info">git.sha=${git.sha}</echo>

        <exec if:true="${git.is-available}" executable="git" osfamily="unix" dir="${basedir}" logError="true" failonerror="false" failifexecutionfails="false">
            <arg value="diff"/>
            <arg value="--stat"/>
            <redirector outputproperty="git.diffstat"/>
        </exec>
        <condition property="is-dirty">
            <contains string="${git.sha}" substring="-dirty"/>
        </condition>
        <echo level="warning" if:true="${is-dirty}">Repository state is dirty</echo>
        <echo level="warning" if:true="${is-dirty}">${git.diffstat}</echo>

        <exec if:true="${git.is-available}" executable="bash" dir="${basedir}" logError="true" failonerror="false" failifexecutionfails="false">
            <arg value="-c"/>
            <arg value="([[ -f .git ]] &amp;&amp; (basename `cat .git | cut -f 2 -d ' '`)) || (basename `pwd`)"/>
            <redirector outputproperty="git.worktree.name"/>
        </exec>
        <echo message="git.worktree.name=${git.worktree.name}"/>

        <exec if:true="${git.is-available}" executable="bash" dir="${basedir}" logError="true" failonerror="false" failifexecutionfails="false">
            <arg value="-c"/>
            <arg value="git branch --show-current"/>
            <redirector outputproperty="git.branch.name"/>
        </exec>
        <echo message="git.branch.name=${git.branch.name}"/>

    </target>
</project>