1 // $Id: ReverseCodeTable.java,v 1.2 2005/12/14 17:11:30 bpeters Exp $
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3 * Copyright (C) 2002 Bas Peters
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5 * This file is part of MARC4J
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7 * MARC4J is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
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9 * License as published by the Free Software Foundation; either
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10 * version 2.1 of the License, or (at your option) any later version.
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12 * MARC4J is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with MARC4J; if not, write to the Free Software
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19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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21 package org.marc4j.converter.impl;
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23 import java.io.File;
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24 import java.io.FileInputStream;
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25 import java.io.InputStream;
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26 import java.net.URI;
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27 import java.util.Hashtable;
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28 import java.util.Vector;
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30 import javax.xml.parsers.SAXParser;
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31 import javax.xml.parsers.SAXParserFactory;
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33 import org.marc4j.MarcException;
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34 import org.xml.sax.InputSource;
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35 import org.xml.sax.XMLReader;
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36 import org.xml.sax.helpers.DefaultHandler;
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40 * <code>ReverseCodeTable</code> defines a data structure to facilitate
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41 * UnicodeToAnsel character conversion.
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44 * @author Corey Keith
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45 * @version $Revision: 1.2 $
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47 * @see DefaultHandler
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49 public class ReverseCodeTable {
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50 protected static Hashtable charset = null;
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52 protected static Vector combining = null;
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54 public boolean isCombining(Character c) {
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55 return combining.contains(c);
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58 public Hashtable codeTableHash(Character c) {
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59 Hashtable chars = (Hashtable) charset.get(c);
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60 if (chars == null) {
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61 System.err.println("Not Found: " + c);
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67 public static boolean inPreviousCharCodeTable(Character c,
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68 CodeTableTracker ctt) {
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69 Hashtable chars = (Hashtable) charset.get(c);
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70 if (chars == null) {
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71 System.out.println("Not Found: " + c);
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75 if ((chars.get(ctt.getPrevious(CodeTableTracker.G0)) != null)
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76 || (chars.get(ctt.getPrevious(CodeTableTracker.G1)) != null)) {
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77 ctt.makePreviousCurrent();
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85 public static char getChar(Character c, CodeTableTracker ctt) {
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86 Hashtable chars = (Hashtable) charset.get(c);
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88 Integer marc = (Integer) chars.get(ctt.getCurrent(CodeTableTracker.G0));
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91 return (char) marc.intValue();
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93 marc = (Integer) chars.get(ctt.getCurrent(CodeTableTracker.G1));
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95 return (char) marc.intValue();
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100 public ReverseCodeTable(InputStream byteStream) {
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102 SAXParserFactory factory = SAXParserFactory.newInstance();
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103 factory.setNamespaceAware(true);
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104 factory.setValidating(false);
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105 SAXParser saxParser = factory.newSAXParser();
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106 XMLReader rdr = saxParser.getXMLReader();
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108 InputSource src = new InputSource(byteStream);
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110 ReverseCodeTableHandler saxUms = new ReverseCodeTableHandler();
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112 rdr.setContentHandler(saxUms);
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115 charset = saxUms.getCharSets();
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116 combining = saxUms.getCombiningChars();
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118 } catch (Exception e) {
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119 throw new MarcException(e.getMessage(), e);
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124 public ReverseCodeTable(String filename) {
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126 SAXParserFactory factory = SAXParserFactory.newInstance();
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127 factory.setNamespaceAware(true);
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128 factory.setValidating(false);
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129 SAXParser saxParser = factory.newSAXParser();
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130 XMLReader rdr = saxParser.getXMLReader();
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132 File file = new File(filename);
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133 InputSource src = new InputSource(new FileInputStream(file));
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135 ReverseCodeTableHandler saxUms = new ReverseCodeTableHandler();
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137 rdr.setContentHandler(saxUms);
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140 charset = saxUms.getCharSets();
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141 combining = saxUms.getCombiningChars();
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143 } catch (Exception e) {
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144 throw new MarcException(e.getMessage(), e);
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148 public ReverseCodeTable(URI uri) {
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150 SAXParserFactory factory = SAXParserFactory.newInstance();
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151 factory.setNamespaceAware(true);
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152 factory.setValidating(false);
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153 SAXParser saxParser = factory.newSAXParser();
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154 XMLReader rdr = saxParser.getXMLReader();
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156 InputSource src = new InputSource(uri.toURL().openStream());
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158 ReverseCodeTableHandler saxUms = new ReverseCodeTableHandler();
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160 rdr.setContentHandler(saxUms);
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163 charset = saxUms.getCharSets();
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164 combining = saxUms.getCombiningChars();
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166 } catch (Exception e) {
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167 throw new MarcException(e.getMessage(), e);
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