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| 1 | /* | ||
| 2 | * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | /* | ||
| 27 | ******************************************************************************* | ||
| 28 | * Copyright (C) 2009-2010, International Business Machines Corporation and * | ||
| 29 | * others. All Rights Reserved. * | ||
| 30 | ******************************************************************************* | ||
| 31 | */ | ||
| 32 | |||
| 33 | package sun.util.locale; | ||
| 34 | |||
| 35 | |||
| 36 | public final class BaseLocale { | ||
| 37 | |||
| 38 | public static final String SEP = "_"; | ||
| 39 | |||
| 40 | private static final Cache CACHE = new Cache(); | ||
| 41 | |||
| 42 | private final String language; | ||
| 43 | private final String script; | ||
| 44 | private final String region; | ||
| 45 | private final String variant; | ||
| 46 | |||
| 47 | private volatile int hash = 0; | ||
| 48 | |||
| 49 | // This method must be called only when creating the Locale.* constants. | ||
| 50 | private BaseLocale(String language, String region) { | ||
| 51 | this.language = language; | ||
| 52 | this.script = ""; | ||
| 53 | this.region = region; | ||
| 54 | this.variant = ""; | ||
| 55 | } | ||
| 56 | |||
| 57 | private BaseLocale(String language, String script, String region, String variant) { | ||
| 58 | this.language = (language != null) ? LocaleUtils.toLowerString(language).intern() : ""; | ||
| 59 | this.script = (script != null) ? LocaleUtils.toTitleString(script).intern() : ""; | ||
| 60 | this.region = (region != null) ? LocaleUtils.toUpperString(region).intern() : ""; | ||
| 61 | this.variant = (variant != null) ? variant.intern() : ""; | ||
| 62 | } | ||
| 63 | |||
| 64 | // Called for creating the Locale.* constants. No argument | ||
| 65 | // validation is performed. | ||
| 66 | public static BaseLocale createInstance(String language, String region) { | ||
| 67 | BaseLocale base = new BaseLocale(language, region); | ||
| 68 | CACHE.put(new Key(language, region), base); | ||
| 69 | return base; | ||
| 70 | } | ||
| 71 | |||
| 72 | public static BaseLocale getInstance(String language, String script, | ||
| 73 | String region, String variant) { | ||
| 74 | // JDK uses deprecated ISO639.1 language codes for he, yi and id | ||
| 75 | if (language != null) { | ||
| 76 | if (LocaleUtils.caseIgnoreMatch(language, "he")) { | ||
| 77 | language = "iw"; | ||
| 78 | } else if (LocaleUtils.caseIgnoreMatch(language, "yi")) { | ||
| 79 | language = "ji"; | ||
| 80 | } else if (LocaleUtils.caseIgnoreMatch(language, "id")) { | ||
| 81 | language = "in"; | ||
| 82 | } | ||
| 83 | } | ||
| 84 | |||
| 85 | Key key = new Key(language, script, region, variant); | ||
| 86 | BaseLocale baseLocale = CACHE.get(key); | ||
| 87 | return baseLocale; | ||
| 88 | } | ||
| 89 | |||
| 90 | public String getLanguage() { | ||
| 91 | return language; | ||
| 92 | } | ||
| 93 | |||
| 94 | public String getScript() { | ||
| 95 | return script; | ||
| 96 | } | ||
| 97 | |||
| 98 | public String getRegion() { | ||
| 99 | return region; | ||
| 100 | } | ||
| 101 | |||
| 102 | public String getVariant() { | ||
| 103 | return variant; | ||
| 104 | } | ||
| 105 | |||
| 106 | @Override | ||
| 107 | public boolean equals(Object obj) { | ||
| 108 | if (this == obj) { | ||
| 109 | return true; | ||
| 110 | } | ||
| 111 | if (!(obj instanceof BaseLocale)) { | ||
| 112 | return false; | ||
| 113 | } | ||
| 114 | BaseLocale other = (BaseLocale)obj; | ||
| 115 | return language == other.language | ||
| 116 | && script == other.script | ||
| 117 | && region == other.region | ||
| 118 | && variant == other.variant; | ||
| 119 | } | ||
| 120 | |||
| 121 | @Override | ||
| 122 | public String toString() { | ||
| 123 | StringBuilder buf = new StringBuilder(); | ||
| 124 | if (language.length() > 0) { | ||
| 125 | buf.append("language="); | ||
| 126 | buf.append(language); | ||
| 127 | } | ||
| 128 | if (script.length() > 0) { | ||
| 129 | if (buf.length() > 0) { | ||
| 130 | buf.append(", "); | ||
| 131 | } | ||
| 132 | buf.append("script="); | ||
| 133 | buf.append(script); | ||
| 134 | } | ||
| 135 | if (region.length() > 0) { | ||
| 136 | if (buf.length() > 0) { | ||
| 137 | buf.append(", "); | ||
| 138 | } | ||
| 139 | buf.append("region="); | ||
| 140 | buf.append(region); | ||
| 141 | } | ||
| 142 | if (variant.length() > 0) { | ||
| 143 | if (buf.length() > 0) { | ||
| 144 | buf.append(", "); | ||
| 145 | } | ||
| 146 | buf.append("variant="); | ||
| 147 | buf.append(variant); | ||
| 148 | } | ||
| 149 | return buf.toString(); | ||
| 150 | } | ||
| 151 | |||
| 152 | @Override | ||
| 153 | public int hashCode() { | ||
| 154 | int h = hash; | ||
| 155 | if (h == 0) { | ||
| 156 | // Generating a hash value from language, script, region and variant | ||
| 157 | h = language.hashCode(); | ||
| 158 | h = 31 * h + script.hashCode(); | ||
| 159 | h = 31 * h + region.hashCode(); | ||
| 160 | h = 31 * h + variant.hashCode(); | ||
| 161 | hash = h; | ||
| 162 | } | ||
| 163 | return h; | ||
| 164 | } | ||
| 165 | |||
| 166 | private static final class Key implements Comparable<Key> { | ||
| 167 | private final String lang; | ||
| 168 | private final String scrt; | ||
| 169 | private final String regn; | ||
| 170 | private final String vart; | ||
| 171 | private final boolean normalized; | ||
| 172 | private final int hash; | ||
| 173 | |||
| 174 | /** | ||
| 175 | * Creates a Key. language and region must be normalized | ||
| 176 | * (intern'ed in the proper case). | ||
| 177 | */ | ||
| 178 | private Key(String language, String region) { | ||
| 179 | assert language.intern() == language | ||
| 180 | && region.intern() == region; | ||
| 181 | |||
| 182 | lang = language; | ||
| 183 | scrt = ""; | ||
| 184 | regn = region; | ||
| 185 | vart = ""; | ||
| 186 | this.normalized = true; | ||
| 187 | |||
| 188 | int h = language.hashCode(); | ||
| 189 | if (region != "") { | ||
| 190 | int len = region.length(); | ||
| 191 | for (int i = 0; i < len; i++) { | ||
| 192 | h = 31 * h + LocaleUtils.toLower(region.charAt(i)); | ||
| 193 | } | ||
| 194 | } | ||
| 195 | hash = h; | ||
| 196 | } | ||
| 197 | |||
| 198 | public Key(String language, String script, String region, String variant) { | ||
| 199 | this(language, script, region, variant, false); | ||
| 200 | } | ||
| 201 | |||
| 202 | private Key(String language, String script, String region, | ||
| 203 | String variant, boolean normalized) { | ||
| 204 | int h = 0; | ||
| 205 | if (language != null) { | ||
| 206 | lang = language; | ||
| 207 | int len = language.length(); | ||
| 208 | for (int i = 0; i < len; i++) { | ||
| 209 | h = 31*h + LocaleUtils.toLower(language.charAt(i)); | ||
| 210 | } | ||
| 211 | } else { | ||
| 212 | lang = ""; | ||
| 213 | } | ||
| 214 | if (script != null) { | ||
| 215 | scrt = script; | ||
| 216 | int len = script.length(); | ||
| 217 | for (int i = 0; i < len; i++) { | ||
| 218 | h = 31*h + LocaleUtils.toLower(script.charAt(i)); | ||
| 219 | } | ||
| 220 | } else { | ||
| 221 | scrt = ""; | ||
| 222 | } | ||
| 223 | if (region != null) { | ||
| 224 | regn = region; | ||
| 225 | int len = region.length(); | ||
| 226 | for (int i = 0; i < len; i++) { | ||
| 227 | h = 31*h + LocaleUtils.toLower(region.charAt(i)); | ||
| 228 | } | ||
| 229 | } else { | ||
| 230 | regn = ""; | ||
| 231 | } | ||
| 232 | if (variant != null) { | ||
| 233 | vart = variant; | ||
| 234 | int len = variant.length(); | ||
| 235 | for (int i = 0; i < len; i++) { | ||
| 236 | h = 31*h + variant.charAt(i); | ||
| 237 | } | ||
| 238 | } else { | ||
| 239 | vart = ""; | ||
| 240 | } | ||
| 241 | hash = h; | ||
| 242 | this.normalized = normalized; | ||
| 243 | } | ||
| 244 | |||
| 245 | @Override | ||
| 246 | public boolean equals(Object obj) { | ||
| 247 | return (this == obj) || | ||
| 248 | (obj instanceof Key) | ||
| 249 | && this.hash == ((Key)obj).hash | ||
| 250 | && LocaleUtils.caseIgnoreMatch(((Key)obj).lang, this.lang) | ||
| 251 | && LocaleUtils.caseIgnoreMatch(((Key)obj).scrt, this.scrt) | ||
| 252 | && LocaleUtils.caseIgnoreMatch(((Key)obj).regn, this.regn) | ||
| 253 | && ((Key)obj).vart.equals(vart); // variant is case sensitive in JDK! | ||
| 254 | } | ||
| 255 | |||
| 256 | @Override | ||
| 257 | public int compareTo(Key other) { | ||
| 258 | int res = LocaleUtils.caseIgnoreCompare(this.lang, other.lang); | ||
| 259 | if (res == 0) { | ||
| 260 | res = LocaleUtils.caseIgnoreCompare(this.scrt, other.scrt); | ||
| 261 | if (res == 0) { | ||
| 262 | res = LocaleUtils.caseIgnoreCompare(this.regn, other.regn); | ||
| 263 | if (res == 0) { | ||
| 264 | res = this.vart.compareTo(other.vart); | ||
| 265 | } | ||
| 266 | } | ||
| 267 | } | ||
| 268 | return res; | ||
| 269 | } | ||
| 270 | |||
| 271 | @Override | ||
| 272 | public int hashCode() { | ||
| 273 | return hash; | ||
| 274 | } | ||
| 275 | |||
| 276 | public static Key normalize(Key key) { | ||
| 277 | if (key.normalized) { | ||
| 278 | return key; | ||
| 279 | } | ||
| 280 | |||
| 281 | String lang = LocaleUtils.toLowerString(key.lang).intern(); | ||
| 282 | String scrt = LocaleUtils.toTitleString(key.scrt).intern(); | ||
| 283 | String regn = LocaleUtils.toUpperString(key.regn).intern(); | ||
| 284 | String vart = key.vart.intern(); // preserve upper/lower cases | ||
| 285 | |||
| 286 | return new Key(lang, scrt, regn, vart, true); | ||
| 287 | } | ||
| 288 | } | ||
| 289 | |||
| 290 | private static class Cache extends LocaleObjectCache<Key, BaseLocale> { | ||
| 291 | |||
| 292 | public Cache() { | ||
| 293 | } | ||
| 294 | |||
| 295 | @Override | ||
| 296 | protected Key normalizeKey(Key key) { | ||
| 297 | return Key.normalize(key); | ||
| 298 | } | ||
| 299 | |||
| 300 | @Override | ||
| 301 | protected BaseLocale createObject(Key key) { | ||
| 302 | return new BaseLocale(key.lang, key.scrt, key.regn, key.vart); | ||
| 303 | } | ||
| 304 | } | ||
| 305 | } | ||