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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 2001 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "The Jakarta Project", "Ant", and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.util.regexp; |
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import org.apache.tools.ant.BuildException; |
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import java.util.Vector; |
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/** |
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* Helper class that adapts a RegexpMatcher to a Regexp. |
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* |
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* @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a> |
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* @version $Revision$ |
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*/ |
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public class MatcherWrappedAsRegexp implements Regexp { |
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private RegexpMatcher matcher; |
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public MatcherWrappedAsRegexp(RegexpMatcher matcher) { |
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this.matcher = matcher; |
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} |
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/** |
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* Set the regexp pattern from the String description. |
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*/ |
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public void setPattern(String pattern) throws BuildException { |
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matcher.setPattern(pattern); |
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} |
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/** |
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* Get a String representation of the regexp pattern |
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*/ |
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public String getPattern() throws BuildException { |
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return matcher.getPattern(); |
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} |
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/** |
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* Does the given argument match the pattern? |
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*/ |
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public boolean matches(String argument) throws BuildException { |
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return matcher.matches(argument); |
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} |
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/** |
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* Returns a Vector of matched groups found in the argument. |
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* |
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* <p>Group 0 will be the full match, the rest are the |
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* parenthesized subexpressions</p>. |
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*/ |
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public Vector getGroups(String argument) throws BuildException { |
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return matcher.getGroups(argument); |
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} |
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/** |
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* Does this regular expression match the input, given |
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* certain options |
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* @param input The string to check for a match |
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* @param options The list of options for the match. See the |
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* MATCH_ constants above. |
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*/ |
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public boolean matches(String input, int options) throws BuildException { |
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return matcher.matches(input, options); |
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} |
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/** |
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* Get the match groups from this regular expression. The return |
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* type of the elements is always String. |
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* @param input The string to check for a match |
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* @param options The list of options for the match. See the |
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* MATCH_ constants above. |
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*/ |
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public Vector getGroups(String input, int options) throws BuildException { |
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return matcher.getGroups(input, options); |
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} |
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/** |
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* Perform a substitution on the regular expression. |
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* @param input The string to substitute on |
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* @param argument The string which defines the substitution |
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* @param options The list of options for the match and replace. See the |
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* MATCH_ and REPLACE_ constants above. |
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* REPLACE_ constants will be ignored. |
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*/ |
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public String substitute(String input, String argument, int options) |
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throws BuildException { |
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Vector v = matcher.getGroups(input, options); |
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StringBuffer result = new StringBuffer(); |
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char[] to = argument.toCharArray(); |
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for (int i=0; i<to.length; i++) { |
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if (to[i] == '\\') { |
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if (++i < to.length) { |
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int value = Character.digit(to[i], 10); |
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if (value > -1) { |
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result.append((String) v.elementAt(value)); |
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} else { |
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result.append(to[i]); |
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} |
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} else { |
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// XXX - should throw an exception instead? |
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result.append('\\'); |
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} |
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} else { |
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result.append(to[i]); |
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} |
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} |
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return result.toString(); |
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} |
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} |
Stefan Bodewig