/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 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 "Ant" and "Apache Software
* Foundation" must not be used to endorse or promote products derived
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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.oro.text.regex.MatchResult;
import org.apache.oro.text.regex.Pattern;
import org.apache.oro.text.regex.Perl5Compiler;
import org.apache.oro.text.regex.Perl5Matcher;
import java.util.Vector;
/**
* Implementation of RegexpMatcher for Jakarta-ORO.
*
* @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
* @author <a href="mailto:mattinger@mindless.com">Matthew Inger</a>
*/
public class JakartaOroMatcher implements RegexpMatcher {
private String pattern;
protected final Perl5Compiler compiler = new Perl5Compiler();
protected final Perl5Matcher matcher = new Perl5Matcher();
public JakartaOroMatcher() {}
/**
* Set the regexp pattern from the String description.
*/
public void setPattern(String pattern) {
this.pattern = pattern;
}
/**
* Get a String representation of the regexp pattern
*/
public String getPattern() {
return this.pattern;
}
/**
* Get a compiled representation of the regexp pattern
*/
protected Pattern getCompiledPattern(int options)
throws BuildException {
try {
// compute the compiler options based on the input options first
Pattern p = compiler.compile(pattern, getCompilerOptions(options));
return p;
} catch (Exception e) {
throw new BuildException(e);
}
}
/**
* Does the given argument match the pattern?
*/
public boolean matches(String argument) throws BuildException {
return matches(argument, MATCH_DEFAULT);
}
/**
* Does the given argument match the pattern?
*/
public boolean matches(String input, int options)
throws BuildException {
Pattern p = getCompiledPattern(options);
return matcher.contains(input, p);
}
/**
* Returns a Vector of matched groups found in the argument.
*
* <p>Group 0 will be the full match, the rest are the
* parenthesized subexpressions</p>.
*/
public Vector getGroups(String argument) throws BuildException {
return getGroups(argument, MATCH_DEFAULT);
}
/**
* Returns a Vector of matched groups found in the argument.
*
* <p>Group 0 will be the full match, the rest are the
* parenthesized subexpressions</p>.
*/
public Vector getGroups(String input, int options)
throws BuildException {
if (!matches(input, options)) {
return null;
}
Vector v = new Vector();
MatchResult mr = matcher.getMatch();
int cnt = mr.groups();
for (int i = 0; i < cnt; i++) {
v.addElement(mr.group(i));
}
return v;
}
protected int getCompilerOptions(int options) {
int cOptions = Perl5Compiler.DEFAULT_MASK;
if (RegexpUtil.hasFlag(options, MATCH_CASE_INSENSITIVE)) {
cOptions |= Perl5Compiler.CASE_INSENSITIVE_MASK;
}
if (RegexpUtil.hasFlag(options, MATCH_MULTILINE)) {
cOptions |= Perl5Compiler.MULTILINE_MASK;
}
if (RegexpUtil.hasFlag(options, MATCH_SINGLELINE)) {
cOptions |= Perl5Compiler.SINGLELINE_MASK;
}
return cOptions;
}
}