Halfbaked build setup script for Android SDK r20 (WIP)

halfsetup.xml

<?xml version="1.0" encoding="utf-8"?>
<project name="runner-setup">
  <!-- Half-baked pre build setup from Android SDK r20 -->
  <target name="sdk-build-setup">
    <!-- read the previous build mode -->
    <property file="${out.build.prop.file}" />
    <!-- if empty the props won't be set, meaning it's a new build.
	 To force a build, set the prop to empty values. -->
    <property name="build.last.target" value="" />
    <property name="build.last.is.instrumented" value="" />
    <property name="build.last.is.packaging.debug" value="" />
    <property name="build.last.is.signing.debug" value="" />

    <echo level="info">Resolving Build Target for ${ant.project.name}...</echo>
    <!-- load project properties, resolve Android target, library dependencies
	 and set some properties with the results.
	 All property names are passed as parameters ending in -Out -->
    <gettarget
	androidJarFileOut="project.target.android.jar"
	androidAidlFileOut="project.target.framework.aidl"
	bootClassPathOut="project.target.class.path"
	targetApiOut="project.target.apilevel"
	minSdkVersionOut="project.minSdkVersion" />

    <!-- Value of the hasCode attribute (Application node) extracted from manifest file -->
    <xpath input="${manifest.abs.file}" expression="/manifest/application/@android:hasCode"
	   output="manifest.hasCode" default="true"/>

    <echo level="info">----------</echo>
    <echo level="info">Creating output directories if needed...</echo>
    <mkdir dir="${resource.absolute.dir}" />
    <mkdir dir="${jar.libs.absolute.dir}" />
    <mkdir dir="${out.absolute.dir}" />
    <mkdir dir="${out.res.absolute.dir}" />
    <do-only-if-manifest-hasCode>
      <mkdir dir="${gen.absolute.dir}" />
      <mkdir dir="${out.classes.absolute.dir}" />
    </do-only-if-manifest-hasCode>


    <echo level="info">----------</echo>
    <echo level="info">Resolving Dependencies for ${ant.project.name}...</echo>
    <dependency
	libraryFolderPathOut="project.library.folder.path"
	libraryPackagesOut="project.library.packages"
	libraryManifestFilePathOut="project.library.manifest.file.path"
	libraryResFolderPathOut="project.library.res.folder.path"
	libraryBinAidlFolderPathOut="project.library.bin.aidl.folder.path"
	libraryNativeFolderPathOut="project.library.native.folder.path"
	jarLibraryPathOut="project.all.jars.path"
	targetApi="${project.target.apilevel}"
	verbose="${verbose}" />
  </target>

  <!-- Half-baked package regenerator -->
  <!-- TBD: dependency handling -->
  <target name="regenerate" depends="sdk-build-setup">
    <property name="renderscript.opt.level" value="O0" />

    <!-- always merge manifest -->
    <mergemanifest
	appManifest="${manifest.abs.file}"
	outManifest="${out.manifest.abs.file}"
	enabled="${manifestmerger.enabled}">
      <library refid="project.library.manifest.file.path" />
    </mergemanifest>

    <do-only-if-manifest-hasCode
	elseText="hasCode = false. Skipping aidl/renderscript/R.java">
      <echo level="info">Handling aidl files...</echo>
      <aidl executable="${aidl}"
	    framework="${project.target.framework.aidl}"
	    libraryBinAidlFolderPathRefid="project.library.bin.aidl.folder.path"
	    genFolder="${gen.absolute.dir}"
	    aidlOutFolder="${out.aidl.absolute.dir}">
	<source path="${source.absolute.dir}"/>
      </aidl>

      <!-- renderscript generates resources so it must be called before aapt -->
      <echo level="info">----------</echo>
      <echo level="info">Handling RenderScript files...</echo>
      <renderscript executable="${renderscript}"
                    includePath="${android.renderscript.include.path}"
                    genFolder="${gen.absolute.dir}"
                    resFolder="${out.res.absolute.dir}/raw"
                    targetApi="${project.minSdkVersion}"
                    optLevel="${renderscript.opt.level}"
                    buildType="${build.is.packaging.debug}"
                    previousBuildType="${build.last.is.packaging.debug}">
	<source path="${source.absolute.dir}"/>
      </renderscript>

      <echo level="info">----------</echo>
      <echo level="info">Handling Resources...</echo>
      <aapt executable="${aapt}"
	    command="package"
	    verbose="${verbose}"
	    manifest="${out.manifest.abs.file}"
	    androidjar="${project.target.android.jar}"
	    rfolder="${gen.absolute.dir}"
	    nonConstantId="${android.library}"
	    libraryResFolderPathRefid="project.library.res.folder.path"
	    libraryPackagesRefid="project.library.packages"
	    ignoreAssets="${aapt.ignore.assets}"
	    proguardFile="${out.absolute.dir}/proguard.txt">
	<res path="${out.res.absolute.dir}" />
	<res path="${resource.absolute.dir}" />
      </aapt>
    </do-only-if-manifest-hasCode>
  </target>
</project>