1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2014 Eric Lafortune (eric (at) graphics.cornell.edu) 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 package proguard.util; 22 23 /** 24 * This StringMatcher tests whether strings start with a given fixed string 25 * and then match another optional given StringMatcher. 26 * 27 * @author Eric Lafortune 28 */ 29 public class FixedStringMatcher implements StringMatcher 30 { 31 private final String fixedString; 32 private final StringMatcher nextMatcher; 33 34 35 public FixedStringMatcher(String fixedString) 36 { 37 this(fixedString, null); 38 } 39 40 41 public FixedStringMatcher(String fixedString, StringMatcher nextMatcher) 42 { 43 this.fixedString = fixedString; 44 this.nextMatcher = nextMatcher; 45 } 46 47 48 // Implementations for StringMatcher. 49 50 public boolean matches(String string) 51 { 52 return string.startsWith(fixedString) && 53 (nextMatcher == null || 54 nextMatcher.matches(string.substring(fixedString.length()))); 55 } 56 } 57
