- /*
- * Copyright 2001-2002,2004 The Apache Software Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
- package org.apache.tools.ant.util.regexp;
-
-
- import java.util.Vector;
- import org.apache.regexp.RE;
- import org.apache.tools.ant.BuildException;
-
- /***
- * Regular expression implementation using the Jakarta Regexp package
- */
- 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);
- }
- }