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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 | +} | |