Import the v8-i18n extension into v8

src/extensions/i18n/i18n-utils.h

+// 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.
+
+#ifndef V8_EXTENSIONS_I18N_SRC_UTILS_H_
+#define V8_EXTENSIONS_I18N_SRC_UTILS_H_
+
+#include "unicode/uversion.h"
+#include "v8.h"
+
+namespace U_ICU_NAMESPACE {
+class UnicodeString;
+}
+
+namespace v8_i18n {
+
+class Utils {
+ public:
+  // Safe string copy. Null terminates the destination. Copies at most
+  // (length - 1) bytes.
+  // We can't use snprintf since it's not supported on all relevant platforms.
+  // We can't use OS::SNPrintF, it's only for internal code.
+  static void StrNCopy(char* dest, int length, const char* src);
+
+  // Converts v8::String into UnicodeString. Returns false if input
+  // can't be converted into utf8.
+  static bool V8StringToUnicodeString(const v8::Handle<v8::Value>& input,
+                                      icu::UnicodeString* output);
+
+  // Extract a String setting named in |settings| and set it to |result|.
+  // Return true if it's specified. Otherwise, return false.
+  static bool ExtractStringSetting(const v8::Handle<v8::Object>& settings,
+                                   const char* setting,
+                                   icu::UnicodeString* result);
+
+  // Extract a Integer setting named in |settings| and set it to |result|.
+  // Return true if it's specified. Otherwise, return false.
+  static bool ExtractIntegerSetting(const v8::Handle<v8::Object>& settings,
+                                    const char* setting,
+                                    int32_t* result);
+
+  // Extract a Boolean setting named in |settings| and set it to |result|.
+  // Return true if it's specified. Otherwise, return false.
+  static bool ExtractBooleanSetting(const v8::Handle<v8::Object>& settings,
+                                    const char* setting,
+                                    bool* result);
+
+  // Converts ASCII array into UChar array.
+  // Target is always \0 terminated.
+  static void AsciiToUChar(const char* source,
+                           int32_t source_length,
+                           UChar* target,
+                           int32_t target_length);
+
+  // Creates an ObjectTemplate with one internal field.
+  static v8::Local<v8::ObjectTemplate> GetTemplate(v8::Isolate* isolate);
+
+  // Creates an ObjectTemplate with two internal fields.
+  static v8::Local<v8::ObjectTemplate> GetTemplate2(v8::Isolate* isolate);
+
+ private:
+  Utils() {}
+};
+
+}  // namespace v8_i18n
+
+#endif  // V8_EXTENSIONS_I18N_UTILS_H_