001: package org.apache.regexp;
002:
003: /*
004: * ====================================================================
005: *
006: * The Apache Software License, Version 1.1
007: *
008: * Copyright (c) 1999 The Apache Software Foundation. All rights
009: * reserved.
010: *
011: * Redistribution and use in source and binary forms, with or without
012: * modification, are permitted provided that the following conditions
013: * are met:
014: *
015: * 1. Redistributions of source code must retain the above copyright
016: * notice, this list of conditions and the following disclaimer.
017: *
018: * 2. Redistributions in binary form must reproduce the above copyright
019: * notice, this list of conditions and the following disclaimer in
020: * the documentation and/or other materials provided with the
021: * distribution.
022: *
023: * 3. The end-user documentation included with the redistribution, if
024: * any, must include the following acknowlegement:
025: * "This product includes software developed by the
026: * Apache Software Foundation (http://www.apache.org/)."
027: * Alternately, this acknowlegement may appear in the software itself,
028: * if and wherever such third-party acknowlegements normally appear.
029: *
030: * 4. The names "The Jakarta Project", "Jakarta-Regexp", and "Apache Software
031: * Foundation" must not be used to endorse or promote products derived
032: * from this software without prior written permission. For written
033: * permission, please contact apache@apache.org.
034: *
035: * 5. Products derived from this software may not be called "Apache"
036: * nor may "Apache" appear in their names without prior written
037: * permission of the Apache Group.
038: *
039: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
040: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
041: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
042: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
043: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
044: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
045: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
046: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
047: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
048: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
049: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
050: * SUCH DAMAGE.
051: * ====================================================================
052: *
053: * This software consists of voluntary contributions made by many
054: * individuals on behalf of the Apache Software Foundation. For more
055: * information on the Apache Software Foundation, please see
056: * <http://www.apache.org/>.
057: *
058: */
059:
060: /**
061: * This is a class that contains utility helper methods for this package.
062: *
063: * @author <a href="mailto:jonl@muppetlabs.com">Jonathan Locke</a>
064: * @version $Id: REUtil.java,v 1.1.1.1 2002/01/31 03:14:36 rcm Exp $
065: */
066: public class REUtil {
067: /** complex: */
068: private static final String complexPrefix = "complex:";
069:
070: /**
071: * Creates a regular expression, permitting simple or complex syntax
072: * @param expression The expression, beginning with a prefix if it's complex or
073: * having no prefix if it's simple
074: * @param matchFlags Matching style flags
075: * @return The regular expression object
076: * @exception RESyntaxException thrown in case of error
077: */
078: public static RE createRE(String expression, int matchFlags)
079: throws RESyntaxException {
080: if (expression.startsWith(complexPrefix)) {
081: return new RE(expression.substring(complexPrefix.length()),
082: matchFlags);
083: }
084: return new RE(RE
085: .simplePatternToFullRegularExpression(expression),
086: matchFlags);
087: }
088:
089: /**
090: * Creates a regular expression, permitting simple or complex syntax
091: * @param expression The expression, beginning with a prefix if it's complex or
092: * having no prefix if it's simple
093: * @return The regular expression object
094: * @exception RESyntaxException thrown in case of error
095: */
096: public static RE createRE(String expression)
097: throws RESyntaxException {
098: return createRE(expression, RE.MATCH_NORMAL);
099: }
100: }
|