001/** 002 * Copyright (c) 2012, The University of Southampton and the individual contributors. 003 * All rights reserved. 004 * 005 * Redistribution and use in source and binary forms, with or without modification, 006 * are permitted provided that the following conditions are met: 007 * 008 * * Redistributions of source code must retain the above copyright notice, 009 * this list of conditions and the following disclaimer. 010 * 011 * * Redistributions in binary form must reproduce the above copyright notice, 012 * this list of conditions and the following disclaimer in the documentation 013 * and/or other materials provided with the distribution. 014 * 015 * * Neither the name of the University of Southampton nor the names of its 016 * contributors may be used to endorse or promote products derived from this 017 * software without specific prior written permission. 018 * 019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 029 */ 030package org.openimaj.tools.twitter.modes.filter; 031 032import java.util.ArrayList; 033import java.util.List; 034import java.util.regex.Pattern; 035 036import org.kohsuke.args4j.Option; 037 038/** 039 * Uses {@link Pattern} to match regex 040 * @author Sina Samangooei (ss@ecs.soton.ac.uk) 041 * 042 */ 043public class JavaRegexEngine implements RegexEngine { 044 enum RegexPatternMode{ 045 CASE_INSENSITIVE { 046 @Override 047 public int ord() { 048 // TODO Auto-generated method stub 049 return 2; 050 } 051 },// 2 052 MULTILINE { 053 @Override 054 public int ord() { 055 // TODO Auto-generated method stub 056 return 8; 057 } 058 },// 8 059 DOTALL { 060 @Override 061 public int ord() { 062 // TODO Auto-generated method stub 063 return 32; 064 } 065 },// 32 066 UNICODE_CASE { 067 @Override 068 public int ord() { 069 // TODO Auto-generated method stub 070 return 64; 071 } 072 }, //64 073 CANON_EQ { 074 @Override 075 public int ord() { 076 // TODO Auto-generated method stub 077 return 128; 078 } 079 }; // 128 080 public abstract int ord(); 081 } 082 083 @Option(name="--regex-pattern-mode", aliases="-rpm", required=false, usage="The integer representing the mode handed to java's Pattern. All provided modes are logically OR-ed together", metaVar="STRING", multiValued=true) 084 List<RegexPatternMode> regexModes = new ArrayList<RegexPatternMode>(); 085 086 private List<Pattern> patterns; 087 088 /** 089 * 090 */ 091 public JavaRegexEngine() { 092 patterns = new ArrayList<Pattern>(); 093 } 094 095 096 097 098 @Override 099 public void add(String regex) { 100 int patternMode = 0; 101 for (RegexPatternMode mode : this.regexModes) { 102 patternMode |= mode.ord(); 103 } 104 this.patterns.add(Pattern.compile(regex, patternMode)); 105 } 106 107 @Override 108 public boolean matches(String str) { 109 for (Pattern p : this.patterns) { 110 if(p.matcher(str).matches()){ 111 return true; 112 } 113 } 114 return false; 115 } 116 117}