package org.apache.regexp;
/*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 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", "Jakarta-Regexp", 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"
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*
* 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
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* 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/>.
*
*/
/**
* This is a class that contains utility helper methods for this package.
*
* @author <a href="mailto:jonl@muppetlabs.com">Jonathan Locke</a>
* @version $Id: REUtil.java,v 1.1 2004/04/10 00:17:47 guehene Exp $
*/
public class REUtil
{
/** complex: */
private static final String complexPrefix = "complex:";
/**
* Creates a regular expression, permitting simple or complex syntax
* @param expression The expression, beginning with a prefix if it's complex or
* having no prefix if it's simple
* @param matchFlags Matching style flags
* @return The regular expression object
* @exception RESyntaxException thrown in case of error
*/
public static RE createRE(String expression, int matchFlags) throws RESyntaxException
{
if (expression.startsWith(complexPrefix))
{
return new RE(expression.substring(complexPrefix.length()), matchFlags);
}
return new RE(RE.simplePatternToFullRegularExpression(expression), matchFlags);
}
/**
* Creates a regular expression, permitting simple or complex syntax
* @param expression The expression, beginning with a prefix if it's complex or
* having no prefix if it's simple
* @return The regular expression object
* @exception RESyntaxException thrown in case of error
*/
public static RE createRE(String expression) throws RESyntaxException
{
return createRE(expression, RE.MATCH_NORMAL);
}
}