build-release.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--+=======================================================================+
    | Copyright 2014 USRZ.com and Pier Paolo Fumagalli                      |
    +- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -+
    | Licensed 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                           |
    |                                                                       |
    | Unless required by applicable law or agreed to in writing, software   |
    | distributed under the License is distributed on an "AS IS" BASIS,     |
    | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or       |
    | implied. See the License for the specific language governing          |
    | permissions and limitations under the License.                        |
    +=======================================================================+-->

<project xmlns:ivy="antlib:org.apache.ivy.ant">

  <target name="release"
          unless="task.executed.release"
          description="Merge the &quot;master&quot; branch into &quot;release&quot;">
    <property name="task.executed.release" value="true"/>

    <!-- Check for local modifications -->
    <echo message="Checking for local modifications"/>
    <exec executable="git" resultproperty="git.check.1">
      <arg value="diff"/>
      <arg value="--cached"/>
      <arg value="--quiet"/>
    </exec>
    <exec executable="git" resultproperty="git.check.2">
      <arg value="diff"/>
      <arg value="--quiet"/>
    </exec>
    <condition property="git.check.ok">
      <and>
        <equals arg1="${git.check.1}" arg2="0"/>
        <equals arg1="${git.check.2}" arg2="0"/>
      </and>
    </condition>
    <fail unless="git.check.ok" message="Local modifications detected"/>

    <!-- Check out, update and merge "release" branch -->
    <echo message="Updating and merging &quot;release&quot; branch"/>
    <exec failonerror="true" executable="git">
      <arg value="checkout"/>
      <arg value="release"/>
    </exec>
    <exec failonerror="true" executable="git">
      <arg value="pull"/>
    </exec>
    <exec failonerror="true" executable="git">
      <arg value="merge"/>
      <arg value="master"/>
    </exec>
    <exec failonerror="true" executable="git">
      <arg value="checkout"/>
      <arg value="master"/>
    </exec>

    <!-- Push changes to all branches -->
    <echo message="Pushing changes back to origin"/>
    <exec failonerror="true" executable="git">
      <arg value="push"/>
      <arg value="origin"/>
      <arg value="--all"/>
    </exec>

  </target>
</project>