Previously i have published a post about using for loop in Ant to read a text file line by line.
The <for> task requires a list attribute containing a comma separated string. Here is an example.
<echo message="The first five letters of the alphabet are:"/>
<for list="a,b,c,d,e" param="letter">
<sequential>
<echo>Letter @{letter}</echo>
</sequential>
</for>
But how about if we want to iterate with a specific range? I did it by using Javascript in Ant.
<project name="AntLoopExample" default="run" basedir=".">
<!-- Load the ant contrib lib -->
<taskdef resource="net/sf/antcontrib/antlib.xml">
<classpath>
<pathelement location="${basedir}/ant-lib/ant-contrib-1.0b3.jar"/>
</classpath>
</taskdef>
<target name="run">
<property name="loop.start" value="4"/>
<property name="loop.end" value="7"/>
<script language="javascript">
<![CDATA[
var start = AntLoopExample.getProperty("loop.start");
var end = AntLoopExample.getProperty("loop.end");
var list = start;
for (i = parseInt(start)+1; i <= end; i++) {
// Construct the list
list += "," + i.toString();
}
AntLoopExample.setProperty("loop.list", list);
]]>
</script>
<!-- Iterate the list -->
<for list="${loop.list}" param="letter">
<sequential>
<echo>Letter @{letter}</echo>
</sequential>
</for>
</target>
</project>
Check it out.
Done =)
Reference:
- Apache Ant – for loop example for reading a text file
- Apache Ant – Get and Set Ant property in Javascript when using the script task
Eureka! 
Can use ant to run JavaScript! Amazing! 😀
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You can even run ruby and groovy too.
<property name="message" value="Hello world"/> <script language="groovy"> println("message is " + message) </script> <script language="beanshell"> System.out.println("message is " + message); </script> <script language="judoscript"> println 'message is ', message </script> <script language="ruby"> print 'message is ', $message, "\n" </script> <script language="jython"> print "message is %s" % message </script>But i haven’t tried others~ XD
Reference: Ant – Scriptdef
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