Echoing out ant fileset to screen for Debugging

Question

I have this:

Answer 1

You can use the documented (honest, it's in there somewhere...) toString helper:

<echo message="My build-path is ${toString:build-path}" />

Answer 2

To debug what files are include in your fileset you can use this example, which prints the contents of a fileset in a readable format:

<?xml version="1.0" encoding="UTF-8"?>
<project name="de.foo.ant" basedir=".">

<!-- Print path manually -->
<target name="print-path-manually" description="" >
    <path id="example.path">
        <fileset dir="${ant.library.dir}"/>
    </path>

    <!-- Format path -->
    <pathconvert pathsep="${line.separator}|   |-- "             
        property="echo.path.compile"             
        refid="example.path">
    </pathconvert>
    <echo>${echo.path.compile}</echo>
</target>

</project>

Output of this is:

Buildfile: D:\Workspaces\IvyTutorial\de.foo.ant\prettyPrintPath.xml
print-path-manually:
 [echo] D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-antlr.jar
 [echo] |   |-- D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-bcel.jar
 [echo] |   |-- D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-bsf.jar
 [echo] |   |-- D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-log4j.jar
 [echo] |   |-- D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-oro.jar
 [echo] |   |-- D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-regexp.jar
 [echo] |   |-- D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-resolver.jar
....

Answer 3

Enable ant's debug logging:

$ ant -h
ant [options] [target [target2 [target3] ...]]
Options:
...
  -verbose, -v           be extra verbose
  -debug, -d             print debugging information

Note though that this will generate a ton of output, so it may be best to capture the output to a file and then find the fileset info in a text editor:

ant -debug compile > ant-out.txt