1 // Copyright 2011 Google Inc. All Rights Reserved.
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3 // Licensed under the Apache License, Version 2.0 (the "License");
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4 // you may not use this file except in compliance with the License.
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5 // You may obtain a copy of the License at
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7 // http://www.apache.org/licenses/LICENSE-2.0
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9 // Unless required by applicable law or agreed to in writing, software
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10 // distributed under the License is distributed on an "AS IS" BASIS,
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11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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12 // See the License for the specific language governing permissions and
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13 // limitations under the License.
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15 package com.hughes.android.dictionary.engine;
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17 import com.hughes.android.dictionary.DictionaryApplication;
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18 import java.text.Collator;
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20 import java.util.Comparator;
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21 import java.util.LinkedHashMap;
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22 import java.util.Locale;
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23 import java.util.Map;
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24 import java.util.regex.Pattern;
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26 public class Language {
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28 public static final class LanguageResources {
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29 public final String englishName;
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30 public final int nameId;
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31 public final int flagId;
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33 public LanguageResources(final String englishName, int nameId, int flagId) {
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34 this.englishName = englishName;
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35 this.nameId = nameId;
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36 this.flagId = flagId;
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39 public LanguageResources(final String englishName, int nameId) {
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40 this(englishName, nameId, 0);
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44 private static final Map<String, Language> registry = new LinkedHashMap<String, Language>();
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46 final String isoCode;
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47 final Locale locale;
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49 private Collator collator;
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51 private Language(final Locale locale, final String isoCode) {
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52 this.locale = locale;
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53 this.isoCode = isoCode;
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55 registry.put(isoCode.toLowerCase(), this);
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59 public String toString() {
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60 return locale.toString();
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63 public String getIsoCode() {
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67 public synchronized Comparator getCollator() {
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68 if (!DictionaryApplication.USE_COLLATOR)
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69 return String.CASE_INSENSITIVE_ORDER;
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70 // Don't think this is thread-safe...
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71 // if (collator == null) {
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72 this.collator = Collator.getInstance(locale);
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73 this.collator.setStrength(Collator.IDENTICAL);
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78 public String getDefaultNormalizerRules() {
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79 return ":: Any-Latin; ' ' > ; :: Lower; :: NFD; :: [:Nonspacing Mark:] Remove; :: NFC ;";
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83 * A practical pattern to identify strong RTL characters. This pattern is
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84 * not completely correct according to the Unicode standard. It is
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85 * simplified for performance and small code size.
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87 private static final String rtlChars =
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88 "\u0591-\u07FF\uFB1D-\uFDFD\uFE70-\uFEFC";
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90 private static final String puncChars =
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91 "\\[\\]\\(\\)\\{\\}\\=";
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93 private static final Pattern RTL_LEFT_BOUNDARY = Pattern.compile("([" + puncChars + "])(["
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95 private static final Pattern RTL_RIGHT_BOUNDARY = Pattern.compile("([" + rtlChars + "])(["
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96 + puncChars + "])");
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98 public static String fixBidiText(String text) {
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99 // text = RTL_LEFT_BOUNDARY.matcher(text).replaceAll("$1\u200e $2");
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100 // text = RTL_RIGHT_BOUNDARY.matcher(text).replaceAll("$1 \u200e$2");
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104 // ----------------------------------------------------------------
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106 public static final Language en = new Language(Locale.ENGLISH, "EN");
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107 public static final Language fr = new Language(Locale.FRENCH, "FR");
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108 public static final Language it = new Language(Locale.ITALIAN, "IT");
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110 public static final Language de = new Language(Locale.GERMAN, "DE") {
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112 public String getDefaultNormalizerRules() {
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113 return ":: Lower; 'ae' > 'ä'; 'oe' > 'ö'; 'ue' > 'ü'; 'ß' > 'ss'; ";
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117 // ----------------------------------------------------------------
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119 public static synchronized Language lookup(final String isoCode) {
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120 Language lang = registry.get(isoCode.toLowerCase());
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121 if (lang == null) {
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122 lang = new Language(new Locale(isoCode), isoCode);
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