--- /dev/null
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "collator.h"
+
+#include "unicode/coll.h"
+#include "unicode/locid.h"
+#include "unicode/ucol.h"
+
+namespace v8 {
+namespace internal {
+
+v8::Persistent<v8::FunctionTemplate> Collator::collator_template_;
+
+icu::Collator* Collator::UnpackCollator(v8::Handle<v8::Object> obj) {
+ if (collator_template_->HasInstance(obj)) {
+ return static_cast<icu::Collator*>(obj->GetPointerFromInternalField(0));
+ }
+
+ return NULL;
+}
+
+void Collator::DeleteCollator(v8::Persistent<v8::Value> object, void* param) {
+ v8::Persistent<v8::Object> persistent_object =
+ v8::Persistent<v8::Object>::Cast(object);
+
+ // First delete the hidden C++ object.
+ // Unpacking should never return NULL here. That would only happen if
+ // this method is used as the weak callback for persistent handles not
+ // pointing to a collator.
+ delete UnpackCollator(persistent_object);
+
+ // Then dispose of the persistent handle to JS object.
+ persistent_object.Dispose();
+}
+
+// Throws a JavaScript exception.
+static v8::Handle<v8::Value> ThrowUnexpectedObjectError() {
+ // Returns undefined, and schedules an exception to be thrown.
+ return v8::ThrowException(v8::Exception::Error(
+ v8::String::New("Collator method called on an object "
+ "that is not a Collator.")));
+}
+
+// Extract a boolean option named in |option| and set it to |result|.
+// Return true if it's specified. Otherwise, return false.
+static bool ExtractBooleanOption(const v8::Local<v8::Object>& options,
+ const char* option,
+ bool* result) {
+ v8::HandleScope handle_scope;
+ v8::TryCatch try_catch;
+ v8::Handle<v8::Value> value = options->Get(v8::String::New(option));
+ if (try_catch.HasCaught()) {
+ return false;
+ }
+ // No need to check if |value| is empty because it's taken care of
+ // by TryCatch above.
+ if (!value->IsUndefined() && !value->IsNull()) {
+ if (value->IsBoolean()) {
+ *result = value->BooleanValue();
+ return true;
+ }
+ }
+ return false;
+}
+
+// When there's an ICU error, throw a JavaScript error with |message|.
+static v8::Handle<v8::Value> ThrowExceptionForICUError(const char* message) {
+ return v8::ThrowException(v8::Exception::Error(v8::String::New(message)));
+}
+
+v8::Handle<v8::Value> Collator::CollatorCompare(const v8::Arguments& args) {
+ if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsString()) {
+ return v8::ThrowException(v8::Exception::SyntaxError(
+ v8::String::New("Two string arguments are required.")));
+ }
+
+ icu::Collator* collator = UnpackCollator(args.Holder());
+ if (!collator) {
+ return ThrowUnexpectedObjectError();
+ }
+
+ v8::String::Value string_value1(args[0]);
+ v8::String::Value string_value2(args[1]);
+ const UChar* string1 = reinterpret_cast<const UChar*>(*string_value1);
+ const UChar* string2 = reinterpret_cast<const UChar*>(*string_value2);
+ UErrorCode status = U_ZERO_ERROR;
+ UCollationResult result = collator->compare(
+ string1, string_value1.length(), string2, string_value2.length(), status);
+
+ if (U_FAILURE(status)) {
+ return ThrowExceptionForICUError(
+ "Unexpected failure in Collator.compare.");
+ }
+
+ return v8::Int32::New(result);
+}
+
+v8::Handle<v8::Value> Collator::JSCollator(const v8::Arguments& args) {
+ v8::HandleScope handle_scope;
+
+ if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsObject()) {
+ return v8::ThrowException(v8::Exception::SyntaxError(
+ v8::String::New("Locale and collation options are required.")));
+ }
+
+ v8::String::AsciiValue locale(args[0]);
+ icu::Locale icu_locale(*locale);
+
+ icu::Collator* collator = NULL;
+ UErrorCode status = U_ZERO_ERROR;
+ collator = icu::Collator::createInstance(icu_locale, status);
+
+ if (U_FAILURE(status)) {
+ delete collator;
+ return ThrowExceptionForICUError("Failed to create collator.");
+ }
+
+ v8::Local<v8::Object> options(args[1]->ToObject());
+
+ // Below, we change collation options that are explicitly specified
+ // by a caller in JavaScript. Otherwise, we don't touch because
+ // we don't want to change the locale-dependent default value.
+ // The three options below are very likely to have the same default
+ // across locales, but I haven't checked them all. Others we may add
+ // in the future have certainly locale-dependent default (e.g.
+ // caseFirst is upperFirst for Danish while is off for most other locales).
+
+ bool ignore_case, ignore_accents, numeric;
+
+ if (ExtractBooleanOption(options, "ignoreCase", &ignore_case)) {
+ collator->setAttribute(UCOL_CASE_LEVEL, ignore_case ? UCOL_OFF : UCOL_ON,
+ status);
+ if (U_FAILURE(status)) {
+ delete collator;
+ return ThrowExceptionForICUError("Failed to set ignoreCase.");
+ }
+ }
+
+ // Accents are taken into account with strength secondary or higher.
+ if (ExtractBooleanOption(options, "ignoreAccents", &ignore_accents)) {
+ if (!ignore_accents) {
+ collator->setStrength(icu::Collator::SECONDARY);
+ } else {
+ collator->setStrength(icu::Collator::PRIMARY);
+ }
+ }
+
+ if (ExtractBooleanOption(options, "numeric", &numeric)) {
+ collator->setAttribute(UCOL_NUMERIC_COLLATION,
+ numeric ? UCOL_ON : UCOL_OFF, status);
+ if (U_FAILURE(status)) {
+ delete collator;
+ return ThrowExceptionForICUError("Failed to set numeric sort option.");
+ }
+ }
+
+ if (collator_template_.IsEmpty()) {
+ v8::Local<v8::FunctionTemplate> raw_template(v8::FunctionTemplate::New());
+ raw_template->SetClassName(v8::String::New("v8Locale.Collator"));
+
+ // Define internal field count on instance template.
+ v8::Local<v8::ObjectTemplate> object_template =
+ raw_template->InstanceTemplate();
+
+ // Set aside internal fields for icu collator.
+ object_template->SetInternalFieldCount(1);
+
+ // Define all of the prototype methods on prototype template.
+ v8::Local<v8::ObjectTemplate> proto = raw_template->PrototypeTemplate();
+ proto->Set(v8::String::New("compare"),
+ v8::FunctionTemplate::New(CollatorCompare));
+
+ collator_template_ =
+ v8::Persistent<v8::FunctionTemplate>::New(raw_template);
+ }
+
+ // Create an empty object wrapper.
+ v8::Local<v8::Object> local_object =
+ collator_template_->GetFunction()->NewInstance();
+ v8::Persistent<v8::Object> wrapper =
+ v8::Persistent<v8::Object>::New(local_object);
+
+ // Set collator as internal field of the resulting JS object.
+ wrapper->SetPointerInInternalField(0, collator);
+
+ // Make object handle weak so we can delete iterator once GC kicks in.
+ wrapper.MakeWeak(NULL, DeleteCollator);
+
+ return wrapper;
+}
+
+} } // namespace v8::internal
+
--- /dev/null
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_EXTENSIONS_EXPERIMENTAL_COLLATOR_H
+#define V8_EXTENSIONS_EXPERIMENTAL_COLLATOR_H_
+
+#include <v8.h>
+
+#include "unicode/uversion.h"
+
+namespace U_ICU_NAMESPACE {
+class Collator;
+class UnicodeString;
+}
+
+namespace v8 {
+namespace internal {
+
+class Collator {
+ public:
+ static v8::Handle<v8::Value> JSCollator(const v8::Arguments& args);
+
+ // Helper methods for various bindings.
+
+ // Unpacks collator object from corresponding JavaScript object.
+ static icu::Collator* UnpackCollator(v8::Handle<v8::Object> obj);
+
+ // Release memory we allocated for the Collator once the JS object that
+ // holds the pointer gets garbage collected.
+ static void DeleteCollator(v8::Persistent<v8::Value> object, void* param);
+
+ // Compare two strings and returns -1, 0 and 1 depending on
+ // whether string1 is smaller than, equal to or larger than string2.
+ static v8::Handle<v8::Value> CollatorCompare(const v8::Arguments& args);
+
+ private:
+ Collator() {}
+
+ static v8::Persistent<v8::FunctionTemplate> collator_template_;
+};
+
+} } // namespace v8::internal
+
+#endif // V8_EXTENSIONS_EXPERIMENTAL_COLLATOR
+
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