custom_rules.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="custom_rules">

<!-- find the Android NDK path -->
  <exec executable="which" outputproperty="which.ndk.build">
    <arg value="ndk-build"/>
  </exec>
  <exec executable="dirname" outputproperty="ndk.build.dir">
    <arg value="${which.ndk.build}"/>
  </exec>
  <condition property="set.ndk.dir" value="${env.ANDROID_NDK_HOME}" else="${ndk.build.dir}">
    <isset property="env.ANDROID_NDK_HOME" />
  </condition>
  <condition property="ndk.dir" value="${set.ndk.dir}">
    <not>
      <isset property="ndk.dir" />
    </not>
  </condition>
  <fail message="Cannot find Android NDK! Either set ANDROID_NDK_HOME or make sure ndk-build is in your PATH.">
    <condition>
      <or>
        <not>
          <isset property="ndk.dir"/>
        </not>
        <equals arg1="${ndk.dir}" arg2=""/>
        <equals arg1="${ndk.dir}" arg2="."/>
      </or>
    </condition>
  </fail>

  <property name="java.source" value="1.6" />
  <property name="java.target" value="1.6" />

  <target name="javadoc" description="Generate Javadocs">
    <javadoc sourcepath="${source.dir}"
             destdir="${out.dir}/javadoc"
             packagenames="info.guardianproject.iocipher.*"
             additionalparam="-notimestamp"
             windowtitle="${ant.project.name}"
             doctitle="${ant.project.name}" />
  </target>

  <target name="-pre-build">
    <exec executable="make" failonerror="true">
      <arg value="-C" />
      <arg value="external" />
    </exec>
    <exec executable="${ndk.dir}/ndk-build" failonerror="true">
      <arg value="-j8" />
    </exec>
  </target>

  <target name="-pre-clean">
    <exec executable="make" failonerror="true">
      <arg value="-C" />
      <arg value="external" />
      <arg value="clean" />
    </exec>
    <exec executable="${ndk.dir}/ndk-build" failonerror="true">
      <arg value="-j8" />
      <arg value="clean" />
    </exec>
    <delete>
      <fileset dir=".">
        <include name="IOCipher*-*.zip" />
        <include name="IOCipher*-*.zip.asc" />
        <include name="IOCipher*-*.aar" />
        <include name="IOCipher*-*.aar.asc" />
        <include name="IOCipher*-*.pom" />
        <include name="IOCipher*-*.pom.asc" />
      </fileset>
    </delete>
  </target>

  <target name="-getgitdetails" >
    <exec executable="git" outputproperty="git.describe">
      <arg value="describe"/>
    </exec>
    <exec executable="git" outputproperty="git.revision">
      <arg value="rev-parse"/>
      <arg value="HEAD"/>
    </exec>
  </target>

  <target name="-post-build" depends="-getgitdetails">
    <property name="jar.dir" value="libs" />
    <condition property="build.is.debug" value="true" else="false">
      <equals arg1="${build.target}" arg2="debug" />
    </condition>
    <if condition="${build.is.debug}">
      <then>
        <property name="jar.name" value="${jar.dir}/${ant.project.name}-${git.describe}-debug.jar" />
        <property name="zip.name" value="${ant.project.name}-${git.describe}-debug.zip" />
        <property name="aar.name" value="${ant.project.name}-${git.describe}-debug.aar" />
        <property name="pom.name" value="${ant.project.name}-${git.describe}-debug.pom" />
        <property name="aar.standalone.name" value="${ant.project.name}Standalone-${git.describe}-debug.aar" />
        <property name="pom.standalone.name" value="${ant.project.name}Standalone-${git.describe}-debug.pom" />
      </then>
      <else>
        <property name="jar.name" value="${jar.dir}/${ant.project.name}-${git.describe}.jar" />
        <property name="zip.name" value="${ant.project.name}-${git.describe}.zip" />
        <property name="aar.name" value="${ant.project.name}-${git.describe}.aar" />
        <property name="pom.name" value="${ant.project.name}-${git.describe}.pom" />
        <property name="aar.standalone.name" value="${ant.project.name}Standalone-${git.describe}.aar" />
        <property name="pom.standalone.name" value="${ant.project.name}Standalone-${git.describe}.pom" />
      </else>
    </if>
    <property file="${sdk.dir}/tools/source.properties" />
    <exec executable="cat" outputproperty="ndk.release">
      <arg value="${ndk.dir}/RELEASE.TXT"/>
    </exec>
    <delete file="${jar.name}"/>
    <mkdir dir="${jar.dir}" />
    <jar destfile="${jar.name}"
         includes="info/**"
         basedir="${out.classes.absolute.dir}">
      <manifest>
        <attribute name="Implementation-Vendor" value="Guardian Project"/>
        <attribute name="Implementation-Title" value="IOCipher"/>
        <attribute name="Implementation-URL" value="https://dev.guardianproject.info/projects/iocipher"/>
        <attribute name="Implementation-Version" value="${git.describe}"/>
        <attribute name="Git-Revision" value="${git.revision}"/>
        <attribute name="Android-SDK-Release" value="${Pkg.Revision}"/>
        <attribute name="Android-SDK-Host-OS" value="${Archive.HostOs}"/>
        <attribute name="Android-NDK-Release" value="${ndk.release}"/>
      </manifest>
    </jar>
    <delete file="${zip.name}"/>
    <delete file="${zip.name}.asc"/>
    <zip destfile="${zip.name}" level="9">
      <zipfileset dir="libs" />
    </zip>
    <!-- AARs require R.txt and res/ even if they are empty -->
    <delete file="R.txt"/>
    <touch file="R.txt"/>
    <!-- reset timestamp for reproducibility -->
    <touch>
      <fileset file="AndroidManifest.xml"/>
      <fileset file="bin/classes.jar"/>
      <fileset dir="res"/>
      <fileset dir="libs"/>
    </touch>
    <!-- AAR for use with SQLCipher-for-Android -->
    <zip destfile="${aar.name}" level="9">
      <zipfileset dir="." includes="AndroidManifest.xml"/>
      <zipfileset dir="bin" includes="classes.jar"/>
      <zipfileset dir="." includes="R.txt"/>
      <zipfileset dir="res" excludes=".README" prefix="res"/>
      <zipfileset dir="libs" includes="**/libiocipher.so **/sqlfs*" prefix="jni"/>
    </zip>
    <!-- AAR that includes the SQLCipher shared libraries -->
    <zip destfile="${aar.standalone.name}" level="9">
      <zipfileset dir="." includes="AndroidManifest.xml"/>
      <zipfileset dir="bin" includes="classes.jar"/>
      <zipfileset dir="." includes="R.txt"/>
      <zipfileset dir="res" excludes=".README" prefix="res"/>
      <zipfileset dir="libs" includes="**/*.so **/sqlfs*" prefix="jni"/>
    </zip>
    <!-- generate .pom for maven repos -->
    <copy file="IOCipher.pom" tofile="${pom.name}"/>
    <replaceregexp file="${pom.name}"
                   match="VERSION"
                   replace="${git.describe}"
                   flags="m"/>
    <copy file="${pom.name}" tofile="${pom.standalone.name}"/>
    <replaceregexp file="${pom.standalone.name}"
                   match="IOCipher&lt;"
                   replace="IOCipherStandalone"
                   flags="m"/>
    <!-- don't leave this jar in libs/ since it confuses Eclipse -->
    <delete file="${jar.name}"/>
    <delete file="${release.jar.name}"/>
    <if condition="${build.is.debug}">
      <else>
        <exec executable="gpg">
          <arg value="--armor" />
          <arg value="--detach-sign" />
          <arg value="${zip.name}" />
        </exec>
        <exec executable="gpg">
          <arg value="--armor" />
          <arg value="--detach-sign" />
          <arg value="${aar.name}" />
        </exec>
        <exec executable="gpg">
          <arg value="--armor" />
          <arg value="--detach-sign" />
          <arg value="${pom.name}" />
        </exec>
        <exec executable="gpg">
          <arg value="--armor" />
          <arg value="--detach-sign" />
          <arg value="${aar.standalone.name}" />
        </exec>
        <exec executable="gpg">
          <arg value="--armor" />
          <arg value="--detach-sign" />
          <arg value="${pom.standalone.name}" />
        </exec>
      </else>
    </if>
  </target>

</project>