001/**
002 * Copyright (c) 2011, 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.text.nlp.patterns;
031
032import java.util.List;
033
034import org.apache.commons.lang.StringUtils;
035import org.openimaj.text.util.RegexUtil;
036
037/**
038 * Matches embedded apostrophies and dashes e.g.: "That's" and "word-count"
039 * 
040 * @author Sina Samangooei (ss@ecs.soton.ac.uk)
041 * 
042 */
043public class EmbeddedApostrophePatternProvider extends PatternProvider {
044        private final String EmbeddedApostrophe;
045        private final String[] potentialApostrphe = new String[] { "'", "\u2019", "\u2018", "\u201B", "\\-" };
046
047        /**
048         * @param punctuation
049         *            used to
050         */
051        public EmbeddedApostrophePatternProvider(PunctuationPatternProvider punctuation) {
052                final List<String> puncs = punctuation.notMinus();
053                puncs.add(" ");
054                final String notpuncs = RegexUtil.regex_char_neg(puncs);
055                final String apostrophePuncs = "(?:[" + StringUtils.join(potentialApostrphe, "]+|[") + "])"; // Exactly
056                                                                                                                                                                                                                // 1
057                                                                                                                                                                                                                // apostrophe
058
059                // final String notApostrophePuncs = "[^" +
060                // StringUtils.join(potentialApostrphe, "") + "]"; // Exactly
061                // // 1
062                // // apostrophe
063                // this.EmbeddedApostrophe = String.format(notpuncs+"+"+
064                // notApostrophePuncs + apostrophePuncs+notApostrophePuncs
065                // +notpuncs+"+");
066                this.EmbeddedApostrophe = String.format(notpuncs + "+" + apostrophePuncs + "" + notpuncs + "+");
067        }
068
069        @Override
070        public String patternString() {
071                return EmbeddedApostrophe;
072        }
073
074}