Ant Nested Loop - ant

Question

I have two txt files: File1.txt – contains list of src dir; and File2.txt – contains list of dest dir. I need to do the copy using a loop from src dir to dest dir.
File1.txt (SVN dire structure)
abcBIN
abcBIN/fdPro
...so on
File2.txt (LINUX structure)
apps/xxx/yyy/bin/abc
apps/xxx/yyy/bin/abc/fdpro
...so on
I need to copy the abcBIN files dir to apps/xxx/yyy/bin/abc and so on. One to one mapping.
<project xmlns:ac="antlib:net.sf.antcontrib">
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="path-to-ant-contrib.jar"/>
</classpath>
</taskdef>
<loadfile property="file1" srcfile="File1.txt"/>
<loadfile property="file2" srcfile="File2.txt"/>
<ac:for param="i" list="${file1}">
<ac:for param="j" list="${file2}">
<sequential>
<echo>#{i}#{j}</echo>
<echo>copying....</echo>
<property name="src.dir" value="/home/name/svn_repo/dir" />
<property name="dest.dir" value="/home/name/mapp" />
<copy todir="${dest.dir}/#{j}">
<fileset dir="${src.dir}/#{i}">
</fileset>
</copy>
</sequential>
</ac:for>
</ac:for>
</project>
It is not working though.
I am getting an error:
ac:for doesn't support the nested "for" element
I can’t use UNIX shell or Perl. It has to be done in Ant.
Please let me know if you have any better idea about the nested loop in Ant.

Answer 1

#PulakAgrawal: I combined two text files into one using colon as a line separator and the magic began :)
e.g. src path:dest path
<loadfile property="allfiles" srcFile="mapping"/>
<ac:for list="${allfiles}" param="line" delimiter="${line.separator}">
<ac:sequential>
<ac:propertyregex property="from" input="#{line}" regexp="(.*):(.*)" select="\1" override="true"/>
<ac:propertyregex property="to" input="#{line}" regexp="(.*):(.*)" select="\2" override="true"/>
<echo>Copying dir ${from} to ${to} ...</echo>
<property name="src.dir" value="." /> <property name="dest.dir" value="." />
<copy todir="${dest.dir}/${to}"> <fileset dir="${src.dir}/${from}"> </fileset> </copy>
</ac:sequential>
</ac:for>