to add support for InputStream's and InputSource's (code below, its mostly a cut-n-paste job from ProjectHelper2). Everything appears to just work. If you don't use Project.setBaseDir() then it appears to simply use PWD; obviously, if you setBaseDir() it does stuff there. I haven't run into any problems with error reporting or otherwise. I'll be doing some more testing on bigger-than-toy build scripts soon.
It seems to me that the restriction is mostly in people's heads :)
===================================================
import java.net.URL; import org.xml.sax.*; import org.xml.sax.helpers.DefaultHandler; import org.apache.tools.ant.util.JAXPUtils; import org.apache.tools.ant.*; import org.apache.tools.ant.helper.*;
public class TestMain
{
public static class MyHelper extends ProjectHelper2
{
public void parse( Project project, Object source, RootHandler handler )
throws BuildException
{
InputStream inputStream = null;
InputSource inputSource = null; if (source instanceof File) {
super.parse( project, source, handler );
} else if (source instanceof URL) {
super.parse( project, source, handler );
} else if (source instanceof InputStream ) {
inputStream = (InputStream) source;
inputSource = new InputSource(inputStream);
} else if (source instanceof InputSource ) {
inputSource = (InputSource) source;
} else {
throw new BuildException("Source " + source.getClass().getName()
+ " not supported by this plugin");
}
try {
XMLReader parser = JAXPUtils.getNamespaceXMLReader();DefaultHandler hb = handler;
parser.setContentHandler(hb);
parser.setEntityResolver(hb);
parser.setErrorHandler(hb);
parser.setDTDHandler(hb);
parser.parse(inputSource);
} catch (SAXParseException exc) {
Location location = new Location(exc.getSystemId(),
exc.getLineNumber(), exc.getColumnNumber());
Throwable t = exc.getException();
if (t instanceof BuildException) {
BuildException be = (BuildException) t;
if (be.getLocation() == Location.UNKNOWN_LOCATION) {
be.setLocation(location);
}
throw be;
}
throw new BuildException(exc.getMessage(), t, location);
} catch (SAXException exc) {
Throwable t = exc.getException();
if (t instanceof BuildException) {
throw (BuildException) t;
}
throw new BuildException(exc.getMessage(), t);
} catch (IOException exc) {
throw new BuildException("Error reading project file : " + exc.getMessage(),
exc);
}
}
}
public static void main( String args[] ) throws Exception { Project proj = new Project(); ProjectHelper helper = new MyHelper();
helper.parse( proj, new FileInputStream( new File( "test.xml")) );
proj.setBaseDir( new File("/path/to/whereever") );
proj.init();
proj.executeTarget( "test" );} }
Peter Reilly wrote:
[EMAIL PROTECTED] wrote:
The problem lies in the fact that so much revolves around the build
file's
basedir, which can only be a File in Ant as of today. Even importing a
build file from a URL or resources didn't reach consensus, for the same
reasons. It seems that Ant is pretty much strictly file based for build
files, unless so major restructuring happens, which would probably not
be
backward compatible. At least that's my current understanding. --DD
Basically thats the same I think. But it should be possible to work with
a buildfile from another datasource, if specify the basedir. So something
like
setBuildfile(File file)
setBuildfile(InputStream is, File basedir)
setBuildfile(Document dom, File basedir)
may be possible.
One also need to know (or does one?), the source name for error reporting. This is something that I had to do for the antlib.xml processing (which is retrieved from a URL).
Peter
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