Here's a short example, which shows how I did it. Used extension, but that's not really needed. Only trick is to new the ANT project so you don't get an error when the task does its logging. The ArgsParser class is a Java GNU-getopts-like command line argument parser (not included!). Besides showing how to call an ANT task from Java directly, it also shows how one can provide direct access to the task functionality independently of the XML build file. When thru this exercise because a colleague asked for this functionality, but did tell him he should use ANT normally (with a XML build file) instead.
Anyways, hope this helps. --DD package com.lgc.jax.tools; import java.io.File; import java.io.PrintStream; import org.apache.tools.ant.Project; import org.apache.tools.ant.BuildException; import org.apache.tools.ant.taskdefs.Copydir; import com.lgc.jax.util.ArgsParser; import com.lgc.jax.util.ArgsParser.OptionException; /** * Copies a directory tree from the source to the destination * <p> * <em>requires ant.jar in the classpath!</em> * * @author <a href="mailto:[EMAIL PROTECTED]";>Dominique Devienne</a> */ public class CopydirX extends Copydir { { project = new Project(); } // Avoids NullPointerException during logging! private static void printUsageAndExit(int exitCode) { PrintStream out = (exitCode==0)? System.out: System.err; out.println("Usage: java "+CopydirX.class.getName()); out.println(" -s source -d destination [-i includes] [-e excludes]"); out.print (" [--src=dir1] [-dest==dir2] "); out.println("[-includes=pattern1] [--excludes=pattern2]"); System.exit(exitCode); } public static void execute(File src, File dest, String includes, String excludes) throws BuildException { if (src==null || dest==null) { throw new IllegalArgumentException("null src or dest"); } CopydirX task = new CopydirX(); task.setSrc(src); task.setDest(dest); if (includes!=null) { task.setIncludes(includes); } if (excludes!=null) { task.setExcludes(excludes); } task.execute(); } public static void main(String[] args) throws BuildException, OptionException { File src=null, dest=null; String includes=null, excludes=null; String shortOpts = "hs:d:i:e:"; String[] longOpts = {"help","src=","dst=","includes=","excludes="}; ArgsParser ap = new ArgsParser(args,shortOpts,longOpts); String[] opts = ap.getOptions(); String[] vals = ap.getValues(); for (int i=0; i<opts.length; ++i) { String opt = opts[i]; String val = vals[i]; if (opt.equals("-h") || opt.equals("--help")) { printUsageAndExit(0); } else if (opt.equals("-s") || opt.equals("--src")) { src = new File(val); } else if (opt.equals("-d") || opt.equals("--dest")) { dest = new File(val); } else if (opt.equals("-i") || opt.equals("--includes")) { includes = val; } else if (opt.equals("-e") || opt.equals("--excludes")) { excludes = val; } } if (ap.getOtherArgs().length>0) { printUsageAndExit(-1); } execute(src,dest,includes,excludes); } } // END class CopydirX /* ** DOS session demonstrating the command line driver: ***************************************************** P:\com_lgc_jax\lib\classes>set CLASSPATH=.;..\ext\ant-1.3.jar P:\com_lgc_jax\lib\classes>rem replace | by / in the command line below P:\com_lgc_jax\lib\classes>java com.lgc.jax.tools.CopydirX -s ..\..\src -d deploy -i "**|*.java" -e "**|tools|**" P:\com_lgc_jax\lib\classes>dir deploy\com\lgc\jax 08/07/01 02:40p 3,391 AllClasses.java 08/07/01 02:40p 2,739 com_lgc_jax.java 08/07/01 02:40p <DIR> io 08/07/01 02:40p <DIR> jni 08/07/01 02:40p <DIR> lang 08/07/01 02:40p <DIR> math 08/07/01 02:40p <DIR> mt 08/07/01 02:40p <DIR> util 10 File(s) 6,130 bytes P:\com_lgc_jax\lib\classes>dir ..\..\src\com\lgc\jax 08/06/01 04:37p 3,391 AllClasses.java 08/06/01 05:53p 12,569 com_lgc_jax.dsp 08/06/01 05:52p 12,683 com_lgc_jax.dsp~ 08/06/01 05:19p 2,739 com_lgc_jax.java 08/07/01 11:47a <DIR> io 08/07/01 11:51a <DIR> jni 08/07/01 12:03p <DIR> lang 08/07/01 02:24p 11,733 makefile.nmk 07/31/01 04:53p <DIR> math 07/31/01 04:52p 164 mssccprj.scc 07/31/01 04:53p <DIR> mt 08/07/01 02:40p <DIR> tools 08/07/01 12:05p <DIR> util 08/06/01 05:55p 96 vssver.scc 16 File(s) 43,375 bytes P:\com_lgc_jax\lib\classes> */ -----Original Message----- From: Justin Lawler [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 06, 2002 10:10 AM To: Ant Users List Subject: executing ant task from outside ant How would you go about executing an ant task from a java program rather than from ant itself? Is there any examples of this or has anybody else done it? thanks, Justin -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
