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From "Cyrille Le Clerc (JIRA)" <>
Subject [jira] Created: (JELLY-209) Ant tags do not redirect stderr ou stdout to Ant tag
Date Sat, 16 Apr 2005 23:34:58 GMT
Ant tags do not redirect stderr ou stdout to Ant tag

         Key: JELLY-209
     Project: jelly
        Type: Bug
  Components: taglib.ant  
    Versions: 1.0    
 Environment: Sun JDK 1.4.2_07, commons-jelly-1.0-RC1.jar, commons-jelly-tags-ant-1.0.jar
    Reporter: Cyrille Le Clerc

Ant tag (org.apache.commons.jelly.tags.ant.AntTag) does not redirect System.out and System.err
to the target Ant tag (through the Ant Project). Due to this, System.out and System.err are
not handled by Ant tasks (e.g. JunitTask should output in TEST-xxx.xml stdout and stderr).

Sample of code to redirect stdout and stderr in,
version 1.6.2 :
  System.setOut(new PrintStream(new DemuxOutputStream(project, false)));
  System.setErr(new PrintStream(new DemuxOutputStream(project, true)));

Patch :
To patch this problem, I modified org.apache.commons.jelly.tags.ant.AntTag to redirect stdout
and stderr before calling "task.perform()" and, after the task execution, reset stdout an
stderr to their initial values.

Diff of org.apache.commons.jelly.tags.ant.AntTag
(It does not seem to be possible to attach files in Jira)

RCS file: /home/cvspublic/jakarta-commons/jelly/jelly-tags/ant/src/java/org/apache/commons/jelly/tags/ant/,v
retrieving revision 1.34
diff -r1.34
> import;
> import;
<                 task.perform();
>                 // according to, redirect stdout and stderr
>                 PrintStream initialOut = System.out;
>                 PrintStream initialErr = System.err;
>                 PrintStream newOut = new PrintStream(new DemuxOutputStream(project, false));
>                 PrintStream newErr = new PrintStream(new DemuxOutputStream(project, true));
>                 try{
>                     System.setOut(newOut);
>                     System.setErr(newErr);
>                     task.perform();
>                 } finally {
>                     System.setOut(initialOut);
>                     System.setErr(initialErr);
>                 }

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