001/*
002 * Copyright © 2012, 2013, 2014 Royal Botanic Gardens, Kew.
003 *
004 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
005 *
006 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
007 *
008 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
009 */
010package org.kew.rmf.transformers;
011
012/**
013 * This is just a best-practise chain of three transformations:
014 * (1) replaces diacritic characters with their ASCII equivalent (NormaliseDiacriticsTransformer)
015 * (2) replaces all non-alphanumeric characters with `b` (default: whitespace)
016 * (3) replaces multiple whitespace occurrences with one whitespace
017 * returns a trimmed result
018 */
019public class SafeStripNonAlphanumericsTransformer implements Transformer {
020
021        final private String a = "[^A-Za-z0-9]";
022        private String replaceWith = " ";
023
024        @Override
025        public String transform(String s) {
026                s = new NormaliseDiacritsTransformer().transform(s);
027                return s.replaceAll(a, replaceWith).replaceAll("\\s+", " ").trim();
028        }
029
030        public String getA() {
031                return a;
032        }
033        public String getReplaceWith() {
034                return replaceWith;
035        }
036        public void setReplaceWith(String replaceWith) {
037                this.replaceWith = replaceWith;
038        }
039
040}