<project default="all" xmlns:ac="antlib:net.sf.antcontrib">
  <description>
    This build file is designed to report the performance
    of ant from various releases.
    to use:
    * install ant-contrib.jar to ($ANT_HOME|$HOME/.ant)/lib
    * install beanshell jar and bsf jar
    * use unix (with bash) or install cygwin
    * set the env variables {whichever needs testing}
      ANT_HOME
      ANT_HOME_6_5 (the directory containing ant 1.6.5)
      ANT_HOME_6_4
      ANT_HOME_5_4
    
    * run ant
    For example:
       export ANT_HOME="c:/cygwin/home/me/svn/trunk/dist"
       export ANT_HOME_5_4="l:/apps/apache-ant-1.5.4"
       ant.bat

    TODO: more build files.
  </description>
  <property environment="env"/>

  <target name="all" depends="gen,do-times"/>

  <target name="clean">
    <delete quiet="yes" dir="build"/>
  </target>

  <macrodef name="run-ant-files">
    <attribute name="env-ant"/>
    <sequential>
      <ac:if>
        <isset property="@{env-ant}"/>
        <then>
          <ac:shellscript shell="bash">
            export ANT_HOME=${@{env-ant}}
            echo $ANT_HOME
            echo -n "--  props.xml     --: "
            $ANT_HOME/bin/ant -f build/gen/props.xml | grep time
            echo -n "-- ant-call.xml   --: "
            $ANT_HOME/bin/ant -f build/gen/ant-call.xml | grep time
          </ac:shellscript>
        </then>
      </ac:if>
    </sequential>
  </macrodef>
  
  <target name="do-times">
    <run-ant-files env-ant="env.ANT_HOME"/>
    <run-ant-files env-ant="env.ANT_HOME_6_5"/>
    <run-ant-files env-ant="env.ANT_HOME_6_2"/>
    <run-ant-files env-ant="env.ANT_HOME_5_4"/>
  </target>


  <target name="gen-dirs">
    <mkdir dir="build/gen"/>
  </target>

  <target name="avail">
    <available property="avail.props.xml"
               file="props.xml" filepath="build/gen"/>
    <available property="avail.ant-call.xml"
               file="ant-call.xml" filepath="build/gen"/>
  </target>

  <target name="gen-props" depends="gen-dirs,avail" unless="avail.props.xml">
    <script language="beanshell">
      import java.io.*;
      out = new PrintWriter(new BufferedWriter(new FileWriter(
          "build/gen/props.xml")));
      out.println("<project name='props' default='props'>");
      out.println("  <target name='props'>");
      for (int i = 0; i < 20000; ++i) {
          out.println(
              "    <property name='prop" + i + "' value='val'/>");
      }
      out.println("  </target>");
      out.println("</project>");
      out.close();
      self.log("Created build/gen/props.xml");
    </script>
  </target>

  <target name="gen-ant-call" depends="gen-dirs,avail"
          unless="avail.ant-call.xml">
    <script language="beanshell">
      import java.io.*;
      out = new PrintWriter(new BufferedWriter(new FileWriter(
          "build/gen/ant-call.xml")));
      out.println("<project name='ant-call' default='call'>");
      out.println("  <target name='me'/>");
      out.println("  <target name='call'>");
      for (int i = 0; i < 1000; ++i) {
          out.println("    <antcall target='me'/>");
      }
      out.println("  </target>");
      out.println("</project>");
      out.close();
      self.log("Created build/gen/ant-call.xml");
    </script>
  </target>

  <target name="gen" depends="gen-ant-call,gen-props"/>
</project>