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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | |
| 2 // Redistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Redistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Redistributions in binary form must reproduce the above | |
| 9 // copyright notice, this list of conditions and the following | |
| 10 // disclaimer in the documentation and/or other materials provided | |
| 11 // with the distribution. | |
| 12 // * Neither the name of Google Inc. nor the names of its | |
| 13 // contributors may be used to endorse or promote products derived | |
| 14 // from this software without specific prior written permission. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 // limitations under the License. | |
| 28 | |
| 29 #include "collator.h" | |
| 30 | |
| 31 #include "i18n-utils.h" | |
| 32 #include "unicode/coll.h" | |
| 33 #include "unicode/locid.h" | |
| 34 #include "unicode/ucol.h" | |
| 35 | |
| 36 namespace v8_i18n { | |
| 37 | |
| 38 static icu::Collator* InitializeCollator( | |
| 39 v8::Handle<v8::String>, v8::Handle<v8::Object>, v8::Handle<v8::Object>); | |
| 40 | |
| 41 static icu::Collator* CreateICUCollator( | |
| 42 const icu::Locale&, v8::Handle<v8::Object>); | |
| 43 | |
| 44 static bool SetBooleanAttribute( | |
| 45 UColAttribute, const char*, v8::Handle<v8::Object>, icu::Collator*); | |
| 46 | |
| 47 static void SetResolvedSettings( | |
| 48 const icu::Locale&, icu::Collator*, v8::Handle<v8::Object>); | |
| 49 | |
| 50 static void SetBooleanSetting( | |
| 51 UColAttribute, icu::Collator*, const char*, v8::Handle<v8::Object>); | |
| 52 | |
| 53 icu::Collator* Collator::UnpackCollator(v8::Handle<v8::Object> obj) { | |
| 54 v8::HandleScope handle_scope; | |
| 55 | |
| 56 if (obj->HasOwnProperty(v8::String::New("collator"))) { | |
| 57 return static_cast<icu::Collator*>( | |
| 58 obj->GetAlignedPointerFromInternalField(0)); | |
| 59 } | |
| 60 | |
| 61 return NULL; | |
| 62 } | |
| 63 | |
| 64 void Collator::DeleteCollator(v8::Isolate* isolate, | |
| 65 v8::Persistent<v8::Object>* object, | |
| 66 void* param) { | |
| 67 // First delete the hidden C++ object. | |
| 68 // Unpacking should never return NULL here. That would only happen if | |
| 69 // this method is used as the weak callback for persistent handles not | |
| 70 // pointing to a collator. | |
| 71 v8::HandleScope handle_scope(isolate); | |
| 72 v8::Local<v8::Object> handle = v8::Local<v8::Object>::New(isolate, *object); | |
| 73 delete UnpackCollator(handle); | |
| 74 | |
| 75 // Then dispose of the persistent handle to JS object. | |
| 76 object->Dispose(isolate); | |
| 77 } | |
| 78 | |
| 79 | |
| 80 // Throws a JavaScript exception. | |
| 81 static v8::Handle<v8::Value> ThrowUnexpectedObjectError() { | |
| 82 // Returns undefined, and schedules an exception to be thrown. | |
| 83 return v8::ThrowException(v8::Exception::Error( | |
| 84 v8::String::New("Collator method called on an object " | |
| 85 "that is not a Collator."))); | |
| 86 } | |
| 87 | |
| 88 | |
| 89 // When there's an ICU error, throw a JavaScript error with |message|. | |
| 90 static v8::Handle<v8::Value> ThrowExceptionForICUError(const char* message) { | |
| 91 return v8::ThrowException(v8::Exception::Error(v8::String::New(message))); | |
| 92 } | |
| 93 | |
| 94 | |
| 95 // static | |
| 96 void Collator::JSInternalCompare( | |
| 97 const v8::FunctionCallbackInfo<v8::Value>& args) { | |
| 98 if (args.Length() != 3 || !args[0]->IsObject() || | |
| 99 !args[1]->IsString() || !args[2]->IsString()) { | |
| 100 v8::ThrowException(v8::Exception::SyntaxError( | |
| 101 v8::String::New("Collator and two string arguments are required."))); | |
| 102 return; | |
| 103 } | |
| 104 | |
| 105 icu::Collator* collator = UnpackCollator(args[0]->ToObject()); | |
| 106 if (!collator) { | |
| 107 ThrowUnexpectedObjectError(); | |
| 108 return; | |
| 109 } | |
| 110 | |
| 111 v8::String::Value string_value1(args[1]); | |
| 112 v8::String::Value string_value2(args[2]); | |
| 113 const UChar* string1 = reinterpret_cast<const UChar*>(*string_value1); | |
| 114 const UChar* string2 = reinterpret_cast<const UChar*>(*string_value2); | |
| 115 UErrorCode status = U_ZERO_ERROR; | |
| 116 UCollationResult result = collator->compare( | |
| 117 string1, string_value1.length(), string2, string_value2.length(), status); | |
| 118 | |
| 119 if (U_FAILURE(status)) { | |
| 120 ThrowExceptionForICUError( | |
| 121 "Internal error. Unexpected failure in Collator.compare."); | |
| 122 return; | |
| 123 } | |
| 124 | |
| 125 args.GetReturnValue().Set(result); | |
| 126 } | |
| 127 | |
| 128 void Collator::JSCreateCollator( | |
| 129 const v8::FunctionCallbackInfo<v8::Value>& args) { | |
| 130 if (args.Length() != 3 || !args[0]->IsString() || !args[1]->IsObject() || | |
| 131 !args[2]->IsObject()) { | |
| 132 v8::ThrowException(v8::Exception::SyntaxError( | |
| 133 v8::String::New("Internal error, wrong parameters."))); | |
| 134 return; | |
| 135 } | |
| 136 | |
| 137 v8::Isolate* isolate = args.GetIsolate(); | |
| 138 v8::Local<v8::ObjectTemplate> intl_collator_template = | |
| 139 Utils::GetTemplate(isolate); | |
| 140 | |
| 141 // Create an empty object wrapper. | |
| 142 v8::Local<v8::Object> local_object = intl_collator_template->NewInstance(); | |
| 143 // But the handle shouldn't be empty. | |
| 144 // That can happen if there was a stack overflow when creating the object. | |
| 145 if (local_object.IsEmpty()) { | |
| 146 args.GetReturnValue().Set(local_object); | |
| 147 return; | |
| 148 } | |
| 149 | |
| 150 // Set collator as internal field of the resulting JS object. | |
| 151 icu::Collator* collator = InitializeCollator( | |
| 152 args[0]->ToString(), args[1]->ToObject(), args[2]->ToObject()); | |
| 153 | |
| 154 if (!collator) { | |
| 155 v8::ThrowException(v8::Exception::Error(v8::String::New( | |
| 156 "Internal error. Couldn't create ICU collator."))); | |
| 157 return; | |
| 158 } else { | |
| 159 local_object->SetAlignedPointerInInternalField(0, collator); | |
| 160 | |
| 161 // Make it safer to unpack later on. | |
| 162 v8::TryCatch try_catch; | |
| 163 local_object->Set(v8::String::New("collator"), v8::String::New("valid")); | |
| 164 if (try_catch.HasCaught()) { | |
| 165 v8::ThrowException(v8::Exception::Error( | |
| 166 v8::String::New("Internal error, couldn't set property."))); | |
| 167 return; | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 v8::Persistent<v8::Object> wrapper(isolate, local_object); | |
| 172 // Make object handle weak so we can delete iterator once GC kicks in. | |
| 173 wrapper.MakeWeak<void>(NULL, &DeleteCollator); | |
| 174 args.GetReturnValue().Set(wrapper); | |
| 175 wrapper.ClearAndLeak(); | |
| 176 } | |
| 177 | |
| 178 static icu::Collator* InitializeCollator(v8::Handle<v8::String> locale, | |
| 179 v8::Handle<v8::Object> options, | |
| 180 v8::Handle<v8::Object> resolved) { | |
| 181 // Convert BCP47 into ICU locale format. | |
| 182 UErrorCode status = U_ZERO_ERROR; | |
| 183 icu::Locale icu_locale; | |
| 184 char icu_result[ULOC_FULLNAME_CAPACITY]; | |
| 185 int icu_length = 0; | |
| 186 v8::String::AsciiValue bcp47_locale(locale); | |
| 187 if (bcp47_locale.length() != 0) { | |
| 188 uloc_forLanguageTag(*bcp47_locale, icu_result, ULOC_FULLNAME_CAPACITY, | |
| 189 &icu_length, &status); | |
| 190 if (U_FAILURE(status) || icu_length == 0) { | |
| 191 return NULL; | |
| 192 } | |
| 193 icu_locale = icu::Locale(icu_result); | |
| 194 } | |
| 195 | |
| 196 icu::Collator* collator = CreateICUCollator(icu_locale, options); | |
| 197 if (!collator) { | |
| 198 // Remove extensions and try again. | |
| 199 icu::Locale no_extension_locale(icu_locale.getBaseName()); | |
| 200 collator = CreateICUCollator(no_extension_locale, options); | |
| 201 | |
| 202 // Set resolved settings (pattern, numbering system). | |
| 203 SetResolvedSettings(no_extension_locale, collator, resolved); | |
| 204 } else { | |
| 205 SetResolvedSettings(icu_locale, collator, resolved); | |
| 206 } | |
| 207 | |
| 208 return collator; | |
| 209 } | |
| 210 | |
| 211 static icu::Collator* CreateICUCollator( | |
| 212 const icu::Locale& icu_locale, v8::Handle<v8::Object> options) { | |
| 213 // Make collator from options. | |
| 214 icu::Collator* collator = NULL; | |
| 215 UErrorCode status = U_ZERO_ERROR; | |
| 216 collator = icu::Collator::createInstance(icu_locale, status); | |
| 217 | |
| 218 if (U_FAILURE(status)) { | |
| 219 delete collator; | |
| 220 return NULL; | |
| 221 } | |
| 222 | |
| 223 // Set flags first, and then override them with sensitivity if necessary. | |
| 224 SetBooleanAttribute(UCOL_NUMERIC_COLLATION, "numeric", options, collator); | |
| 225 | |
| 226 // Normalization is always on, by the spec. We are free to optimize | |
| 227 // if the strings are already normalized (but we don't have a way to tell | |
| 228 // that right now). | |
| 229 collator->setAttribute(UCOL_NORMALIZATION_MODE, UCOL_ON, status); | |
| 230 | |
| 231 icu::UnicodeString case_first; | |
| 232 if (Utils::ExtractStringSetting(options, "caseFirst", &case_first)) { | |
| 233 if (case_first == UNICODE_STRING_SIMPLE("upper")) { | |
| 234 collator->setAttribute(UCOL_CASE_FIRST, UCOL_UPPER_FIRST, status); | |
| 235 } else if (case_first == UNICODE_STRING_SIMPLE("lower")) { | |
| 236 collator->setAttribute(UCOL_CASE_FIRST, UCOL_LOWER_FIRST, status); | |
| 237 } else { | |
| 238 // Default (false/off). | |
| 239 collator->setAttribute(UCOL_CASE_FIRST, UCOL_OFF, status); | |
| 240 } | |
| 241 } | |
| 242 | |
| 243 icu::UnicodeString sensitivity; | |
| 244 if (Utils::ExtractStringSetting(options, "sensitivity", &sensitivity)) { | |
| 245 if (sensitivity == UNICODE_STRING_SIMPLE("base")) { | |
| 246 collator->setStrength(icu::Collator::PRIMARY); | |
| 247 } else if (sensitivity == UNICODE_STRING_SIMPLE("accent")) { | |
| 248 collator->setStrength(icu::Collator::SECONDARY); | |
| 249 } else if (sensitivity == UNICODE_STRING_SIMPLE("case")) { | |
| 250 collator->setStrength(icu::Collator::PRIMARY); | |
| 251 collator->setAttribute(UCOL_CASE_LEVEL, UCOL_ON, status); | |
| 252 } else { | |
| 253 // variant (default) | |
| 254 collator->setStrength(icu::Collator::TERTIARY); | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 bool ignore; | |
| 259 if (Utils::ExtractBooleanSetting(options, "ignorePunctuation", &ignore)) { | |
| 260 if (ignore) { | |
| 261 collator->setAttribute(UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED, status); | |
| 262 } | |
| 263 } | |
| 264 | |
| 265 return collator; | |
| 266 } | |
| 267 | |
| 268 static bool SetBooleanAttribute(UColAttribute attribute, | |
| 269 const char* name, | |
| 270 v8::Handle<v8::Object> options, | |
| 271 icu::Collator* collator) { | |
| 272 UErrorCode status = U_ZERO_ERROR; | |
| 273 bool result; | |
| 274 if (Utils::ExtractBooleanSetting(options, name, &result)) { | |
| 275 collator->setAttribute(attribute, result ? UCOL_ON : UCOL_OFF, status); | |
| 276 if (U_FAILURE(status)) { | |
| 277 return false; | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 return true; | |
| 282 } | |
| 283 | |
| 284 static void SetResolvedSettings(const icu::Locale& icu_locale, | |
| 285 icu::Collator* collator, | |
| 286 v8::Handle<v8::Object> resolved) { | |
| 287 SetBooleanSetting(UCOL_NUMERIC_COLLATION, collator, "numeric", resolved); | |
| 288 | |
| 289 UErrorCode status = U_ZERO_ERROR; | |
| 290 | |
| 291 switch (collator->getAttribute(UCOL_CASE_FIRST, status)) { | |
| 292 case UCOL_LOWER_FIRST: | |
| 293 resolved->Set(v8::String::New("caseFirst"), v8::String::New("lower")); | |
| 294 break; | |
| 295 case UCOL_UPPER_FIRST: | |
| 296 resolved->Set(v8::String::New("caseFirst"), v8::String::New("upper")); | |
| 297 break; | |
| 298 default: | |
| 299 resolved->Set(v8::String::New("caseFirst"), v8::String::New("false")); | |
| 300 } | |
| 301 | |
| 302 switch (collator->getAttribute(UCOL_STRENGTH, status)) { | |
| 303 case UCOL_PRIMARY: { | |
| 304 resolved->Set(v8::String::New("strength"), v8::String::New("primary")); | |
| 305 | |
| 306 // case level: true + s1 -> case, s1 -> base. | |
| 307 if (UCOL_ON == collator->getAttribute(UCOL_CASE_LEVEL, status)) { | |
| 308 resolved->Set(v8::String::New("sensitivity"), v8::String::New("case")); | |
| 309 } else { | |
| 310 resolved->Set(v8::String::New("sensitivity"), v8::String::New("base")); | |
| 311 } | |
| 312 break; | |
| 313 } | |
| 314 case UCOL_SECONDARY: | |
| 315 resolved->Set(v8::String::New("strength"), v8::String::New("secondary")); | |
| 316 resolved->Set(v8::String::New("sensitivity"), v8::String::New("accent")); | |
| 317 break; | |
| 318 case UCOL_TERTIARY: | |
| 319 resolved->Set(v8::String::New("strength"), v8::String::New("tertiary")); | |
| 320 resolved->Set(v8::String::New("sensitivity"), v8::String::New("variant")); | |
| 321 break; | |
| 322 case UCOL_QUATERNARY: | |
| 323 // We shouldn't get quaternary and identical from ICU, but if we do | |
| 324 // put them into variant. | |
| 325 resolved->Set(v8::String::New("strength"), v8::String::New("quaternary")); | |
| 326 resolved->Set(v8::String::New("sensitivity"), v8::String::New("variant")); | |
| 327 break; | |
| 328 default: | |
| 329 resolved->Set(v8::String::New("strength"), v8::String::New("identical")); | |
| 330 resolved->Set(v8::String::New("sensitivity"), v8::String::New("variant")); | |
| 331 } | |
| 332 | |
| 333 if (UCOL_SHIFTED == collator->getAttribute(UCOL_ALTERNATE_HANDLING, status)) { | |
| 334 resolved->Set(v8::String::New("ignorePunctuation"), | |
| 335 v8::Boolean::New(true)); | |
| 336 } else { | |
| 337 resolved->Set(v8::String::New("ignorePunctuation"), | |
| 338 v8::Boolean::New(false)); | |
| 339 } | |
| 340 | |
| 341 // Set the locale | |
| 342 char result[ULOC_FULLNAME_CAPACITY]; | |
| 343 status = U_ZERO_ERROR; | |
| 344 uloc_toLanguageTag( | |
| 345 icu_locale.getName(), result, ULOC_FULLNAME_CAPACITY, FALSE, &status); | |
| 346 if (U_SUCCESS(status)) { | |
| 347 resolved->Set(v8::String::New("locale"), v8::String::New(result)); | |
| 348 } else { | |
| 349 // This would never happen, since we got the locale from ICU. | |
| 350 resolved->Set(v8::String::New("locale"), v8::String::New("und")); | |
| 351 } | |
| 352 } | |
| 353 | |
| 354 static void SetBooleanSetting(UColAttribute attribute, | |
| 355 icu::Collator* collator, | |
| 356 const char* property, | |
| 357 v8::Handle<v8::Object> resolved) { | |
| 358 UErrorCode status = U_ZERO_ERROR; | |
| 359 if (UCOL_ON == collator->getAttribute(attribute, status)) { | |
| 360 resolved->Set(v8::String::New(property), v8::Boolean::New(true)); | |
| 361 } else { | |
| 362 resolved->Set(v8::String::New(property), v8::Boolean::New(false)); | |
| 363 } | |
| 364 } | |
| 365 | |
| 366 } // namespace v8_i18n | |
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Chromium Code Reviews
Issue 22671002:
Move i18n collator code to runtime. (Closed)
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge