Move i18n break iterator C++ code to runtime

src/extensions/i18n/i18n-utils.cc

-// Copyright 2013 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.
-// limitations under the License.
-
-#include "i18n-utils.h"
-
-#include <string.h>
-
-#include "unicode/unistr.h"
-
-namespace v8_i18n {
-
-// static
-void Utils::StrNCopy(char* dest, int length, const char* src) {
-  if (!dest || !src) return;
-
-  strncpy(dest, src, length);
-  dest[length - 1] = '\0';
-}
-
-
-// static
-bool Utils::V8StringToUnicodeString(const v8::Handle<v8::Value>& input,
-                                    icu::UnicodeString* output) {
-  v8::String::Utf8Value utf8_value(input);
-
-  if (*utf8_value == NULL) return false;
-
-  output->setTo(icu::UnicodeString::fromUTF8(*utf8_value));
-
-  return true;
-}
-
-
-// static
-bool Utils::ExtractStringSetting(const v8::Handle<v8::Object>& settings,
-                                 const char* setting,
-                                 icu::UnicodeString* result) {
-  if (!setting || !result) return false;
-
-  v8::HandleScope handle_scope;
-  v8::TryCatch try_catch;
-  v8::Handle<v8::Value> value = settings->Get(v8::String::New(setting));
-  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() && value->IsString()) {
-    return V8StringToUnicodeString(value, result);
-  }
-  return false;
-}
-
-
-// static
-bool Utils::ExtractIntegerSetting(const v8::Handle<v8::Object>& settings,
-                                  const char* setting,
-                                  int32_t* result) {
-  if (!setting || !result) return false;
-
-  v8::HandleScope handle_scope;
-  v8::TryCatch try_catch;
-  v8::Handle<v8::Value> value = settings->Get(v8::String::New(setting));
-  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() && value->IsNumber()) {
-    *result = static_cast<int32_t>(value->Int32Value());
-    return true;
-  }
-  return false;
-}
-
-
-// static
-bool Utils::ExtractBooleanSetting(const v8::Handle<v8::Object>& settings,
-                                  const char* setting,
-                                  bool* result) {
-  if (!setting || !result) return false;
-
-  v8::HandleScope handle_scope;
-  v8::TryCatch try_catch;
-  v8::Handle<v8::Value> value = settings->Get(v8::String::New(setting));
-  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() && value->IsBoolean()) {
-    *result = static_cast<bool>(value->BooleanValue());
-    return true;
-  }
-  return false;
-}
-
-
-// static
-void Utils::AsciiToUChar(const char* source,
-                         int32_t source_length,
-                         UChar* target,
-                         int32_t target_length) {
-  int32_t length =
-      source_length < target_length ? source_length : target_length;
-
-  if (length <= 0) {
-    return;
-  }
-
-  for (int32_t i = 0; i < length - 1; ++i) {
-    target[i] = static_cast<UChar>(source[i]);
-  }
-
-  target[length - 1] = 0x0u;
-}
-
-
-static v8::Local<v8::ObjectTemplate> ToLocal(i::Handle<i::Object> handle) {
-  return v8::Utils::ToLocal(i::Handle<i::ObjectTemplateInfo>::cast(handle));
-}
-
-
-template<int internal_fields, i::EternalHandles::SingletonHandle field>
-static v8::Local<v8::ObjectTemplate> GetEternal(v8::Isolate* external) {
-  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external);
-  if (isolate->eternal_handles()->Exists(field)) {
-    return ToLocal(isolate->eternal_handles()->GetSingleton(field));
-  }
-  v8::Local<v8::ObjectTemplate> raw_template(v8::ObjectTemplate::New());
-  raw_template->SetInternalFieldCount(internal_fields);
-  return ToLocal(
-      isolate->eternal_handles()->CreateSingleton(
-        isolate,
-        *v8::Utils::OpenHandle(*raw_template),
-        field));
-}
-
-
-// static
-v8::Local<v8::ObjectTemplate> Utils::GetTemplate(v8::Isolate* isolate) {
-  return GetEternal<1, i::EternalHandles::I18N_TEMPLATE_ONE>(isolate);
-}
-
-
-// static
-v8::Local<v8::ObjectTemplate> Utils::GetTemplate2(v8::Isolate* isolate) {
-  return GetEternal<2, i::EternalHandles::I18N_TEMPLATE_TWO>(isolate);
-}
-
-
-}  // namespace v8_i18n