/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
package com.hp.mw.buildsystem.ant;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.BuildException;
import java.util.ArrayList;
import java.util.StringTokenizer;
import java.util.HashSet;
import java.io.*;
/**
* ANT task to enable an ANT script to build up a classpath
* on the fly.
*
* @author Richard A. Begg (richard_begg@hp.com)
*/
public class ClasspathBuilder extends org.apache.tools.ant.Task
{
private static final String FILENAME_DELIMITER = ";";
protected static long COUNT = 0;
protected String[] _filename = null;
protected String _property = null;
protected ArrayList _paths = new ArrayList();
protected boolean _clear = false;
/**
* Set the filename of the file that the classpath will be stored in
*
* @param filename The filename of the file to store the classpath in
*/
public void setFilename(String filename)
{
StringTokenizer st = new StringTokenizer(filename,FILENAME_DELIMITER);
int count = 0;
_filename = new String[st.countTokens()];
while (st.hasMoreTokens())
{
_filename[count++] = st.nextToken();
}
}
/**
* Set the clear flag. If this flag is set (true) then clear the contents
* of the classpath build file.
*
* @param clear True or False
*/
public void setClear(String clear)
{
_clear = new Boolean(clear).booleanValue();
}
/**
* Set the property in which the built classpath is to be placed.
*
* @param property The property to store the classpath in
*/
public void setInproperty(String property)
{
_property = property;
}
public boolean putClasspathInProperty( String[] filename, String property )
{
boolean returnValue = true;
boolean firstEntry = true;
StringBuffer classpathString = new StringBuffer();
/**
* Open classpath file and read each line into a string buffer putting the necessary classpath
* separator between each element.
*/
for (int filenameCount=0;filenameCount<filename.length;filenameCount++)
{
try
{
BufferedReader in = new BufferedReader( new InputStreamReader( new FileInputStream( filename[filenameCount] ) ) );
String inLine = null;
while ( ( inLine = in.readLine() ) != null )
{
if (!firstEntry)
{
classpathString.append( File.pathSeparator );
}
else
{
firstEntry = false;
}
classpathString.append( inLine );
}
in.close();
}
catch (java.io.IOException e)
{
}
}
/**
* Put the built up classpath into the property
*/
log("Property '"+property+"' set to classpath ("+classpathString.toString()+")");
project.setProperty( property, classpathString.toString() );
return(returnValue);
}
public Path createClasspath()
{
Path c = new Path(project);
_paths.add(c);
return(c);
}
public void execute() throws BuildException
{
if ( _filename == null )
{
throw new BuildException("No filename specified to store built classpath!");
}
if (_paths.size() > 0)
{
try
{
for (int filenameCount=0;filenameCount<_filename.length;filenameCount++)
{
BufferedWriter out = new BufferedWriter( new OutputStreamWriter( new FileOutputStream( _filename[filenameCount], !_clear ) ) );
for (int count=0;count<_paths.size();count++)
{
Object obj = _paths.get(count);
if ( obj instanceof Path )
{
Path path = (Path)obj;
String[] paths = path.list();
for (int pathCount=0;pathCount<paths.length;pathCount++)
{
out.write(paths[pathCount] + "\n");
}
}
}
out.close();
}
}
catch (java.io.IOException e)
{
throw new BuildException("Failed to update file (reason: "+e+")");
}
}
else if (_clear)
{
/**
* If a request to clear the file has been made but no entries have been
* given then we need to delete the classpath builder file.
*/
for (int filenameCount=0;filenameCount<_filename.length;filenameCount++)
{
new File(_filename[filenameCount]).delete();
}
}
if ( _property != null )
{
putClasspathInProperty( _filename, _property );
}
}
}