/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.tools.ant.util.regexp;
import org.apache.tools.ant.BuildException;
import org.apache.regexp.RE;
import java.util.Vector;
/***
* Regular expression implementation using the Jakarta Regexp package
* @author Matthew Inger <a href="mailto:mattinger@mindless.com">mattinger@mindless.com</a>
*/
public class JakartaRegexpRegexp extends JakartaRegexpMatcher
implements Regexp {
public JakartaRegexpRegexp() {
super();
}
protected int getSubsOptions(int options) {
int subsOptions = RE.REPLACE_FIRSTONLY;
if (RegexpUtil.hasFlag(options, REPLACE_ALL)) {
subsOptions = RE.REPLACE_ALL;
}
return subsOptions;
}
public String substitute(String input, String argument, int options)
throws BuildException {
Vector v = getGroups(input, options);
// replace \1 with the corresponding group
StringBuffer result = new StringBuffer();
for (int i = 0; i < argument.length(); i++) {
char c = argument.charAt(i);
if (c == '\\') {
if (++i < argument.length()) {
c = argument.charAt(i);
int value = Character.digit(c, 10);
if (value > -1) {
result.append((String) v.elementAt(value));
} else {
result.append(c);
}
} else {
// XXX - should throw an exception instead?
result.append('\\');
}
} else {
result.append(c);
}
}
argument = result.toString();
RE reg = getCompiledPattern(options);
int sOptions = getSubsOptions(options);
return reg.subst(input, argument, sOptions);
}
}