 the substring representing the path relative to the source dir
 return a new string representing the destination path
 not supported, as jasper in tomcat4.0 doesnt either</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../../org/apache/tools/ant/taskdefs/optional/jsp/JspMangler.html#mapPath(java.lang.String)">mapPath</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../org/apache/tools/ant/taskdefs/optional/jsp/JspMangler.html" title="interface in org.a