1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Copyright 1999-2004 The Apache Software Foundation. 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 package com.sun.org.apache.regexp.internal; 22 23 /** 24 * This is a class that contains utility helper methods for this package. 25 * 26 * @author <a href="mailto:jonl@muppetlabs.com">Jonathan Locke</a> 27 */ 28 public class REUtil 29 { 30 /** complex: */ 31 private static final String complexPrefix = "complex:"; 32 33 /** 34 * Creates a regular expression, permitting simple or complex syntax 35 * @param expression The expression, beginning with a prefix if it's complex or 36 * having no prefix if it's simple 37 * @param matchFlags Matching style flags 38 * @return The regular expression object 39 * @exception RESyntaxException thrown in case of error 40 */ 41 public static RE createRE(String expression, int matchFlags) throws RESyntaxException 42 { 43 if (expression.startsWith(complexPrefix)) 44 { 45 return new RE(expression.substring(complexPrefix.length()), matchFlags); 46 } 47 return new RE(RE.simplePatternToFullRegularExpression(expression), matchFlags); 48 } 49 50 /** 51 * Creates a regular expression, permitting simple or complex syntax 52 * @param expression The expression, beginning with a prefix if it's complex or 53 * having no prefix if it's simple 54 * @return The regular expression object 55 * @exception RESyntaxException thrown in case of error 56 */ 57 public static RE createRE(String expression) throws RESyntaxException 58 { 59 return createRE(expression, RE.MATCH_NORMAL); 60 } 61 }