Mega Code Archive
Parses the CLASSPATH and returns the directories used within it
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/*
* 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.
*/
/*
* Copyright (C) 2001,
*
* Arjuna Solutions Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: ClassPathParser.java 2342 2006-03-30 13:06:17Z $
*/
import java.lang.StringIndexOutOfBoundsException;
/**
* This class parses the CLASSPATH and returns the directories used
* within it.
*
* @author Mark Little (mark@arjuna.com)
* @version $Id: ClassPathParser.java 2342 2006-03-30 13:06:17Z $
* @since JTS 2.1.
*/
public class ClassPathParser
{
public ClassPathParser ()
{
_classPath = System.getProperty("java.class.path");
_start = 0;
}
/**
* @return the directory path of the next entry in the CLASSPATH that
* contains the specified string.
*/
public final String getPath (String contains)
{
String toReturn = null;
if ((_classPath != null) && (contains != null))
{
int indx = _classPath.indexOf(contains, _start);
if (indx != -1)
{
int lastIndex = _classPath.indexOf(pathSeparator, _start);
int sepIndex = lastIndex+1;
if (lastIndex > indx) // at start of path?
sepIndex = 0;
else
{
while ((lastIndex < indx) && (lastIndex != -1))
{
lastIndex = _classPath.indexOf(pathSeparator, sepIndex);
if (lastIndex == -1)
lastIndex = _classPath.length();
else
{
if (lastIndex < indx)
sepIndex = lastIndex+1;
}
}
}
try
{
toReturn = _classPath.substring(sepIndex, lastIndex);
_start = indx+1;
}
catch (StringIndexOutOfBoundsException e)
{
// nothing left!!
}
}
}
return toReturn;
}
/**
* Reload the classpath and reset the class ready to re-parse.
*
* @return <code>true</code> if a non-null CLASSPATH was loaded,
* <code>false</code> otherwise.
*/
public final boolean reset ()
{
_classPath = System.getProperty("java.class.path");
_start = 0;
return (boolean) (_classPath != null);
}
private String _classPath;
private int _start;
private static final char winSeparator = ';';
private static final char unixSeparator = ':';
private static char pathSeparator = unixSeparator;
static
{
pathSeparator = System.getProperty("path.separator").charAt(0);
}
}
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