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 "i18n-utils.h" 30 31 #include <string.h> 32 33 #include "unicode/unistr.h" 34 35 namespace v8_i18n { 36 37 // static 38 void Utils::StrNCopy(char* dest, int length, const char* src) { 39 if (!dest || !src) return; 40 41 strncpy(dest, src, length); 42 dest[length - 1] = '\0'; 43 } 44 45 46 // static 47 bool Utils::V8StringToUnicodeString(const v8::Handle<v8::Value>& input, 48 icu::UnicodeString* output) { 49 v8::String::Utf8Value utf8_value(input); 50 51 if (*utf8_value == NULL) return false; 52 53 output->setTo(icu::UnicodeString::fromUTF8(*utf8_value)); 54 55 return true; 56 } 57 58 59 // static 60 bool Utils::ExtractStringSetting(const v8::Handle<v8::Object>& settings, 61 const char* setting, 62 icu::UnicodeString* result) { 63 if (!setting || !result) return false; 64 65 v8::HandleScope handle_scope; 66 v8::TryCatch try_catch; 67 v8::Handle<v8::Value> value = settings->Get(v8::String::New(setting)); 68 if (try_catch.HasCaught()) { 69 return false; 70 } 71 // No need to check if |value| is empty because it's taken care of 72 // by TryCatch above. 73 if (!value->IsUndefined() && !value->IsNull() && value->IsString()) { 74 return V8StringToUnicodeString(value, result); 75 } 76 return false; 77 } 78 79 80 // static 81 bool Utils::ExtractIntegerSetting(const v8::Handle<v8::Object>& settings, 82 const char* setting, 83 int32_t* result) { 84 if (!setting || !result) return false; 85 86 v8::HandleScope handle_scope; 87 v8::TryCatch try_catch; 88 v8::Handle<v8::Value> value = settings->Get(v8::String::New(setting)); 89 if (try_catch.HasCaught()) { 90 return false; 91 } 92 // No need to check if |value| is empty because it's taken care of 93 // by TryCatch above. 94 if (!value->IsUndefined() && !value->IsNull() && value->IsNumber()) { 95 *result = static_cast<int32_t>(value->Int32Value()); 96 return true; 97 } 98 return false; 99 } 100 101 102 // static 103 bool Utils::ExtractBooleanSetting(const v8::Handle<v8::Object>& settings, 104 const char* setting, 105 bool* result) { 106 if (!setting || !result) return false; 107 108 v8::HandleScope handle_scope; 109 v8::TryCatch try_catch; 110 v8::Handle<v8::Value> value = settings->Get(v8::String::New(setting)); 111 if (try_catch.HasCaught()) { 112 return false; 113 } 114 // No need to check if |value| is empty because it's taken care of 115 // by TryCatch above. 116 if (!value->IsUndefined() && !value->IsNull() && value->IsBoolean()) { 117 *result = static_cast<bool>(value->BooleanValue()); 118 return true; 119 } 120 return false; 121 } 122 123 124 // static 125 void Utils::AsciiToUChar(const char* source, 126 int32_t source_length, 127 UChar* target, 128 int32_t target_length) { 129 int32_t length = 130 source_length < target_length ? source_length : target_length; 131 132 if (length <= 0) { 133 return; 134 } 135 136 for (int32_t i = 0; i < length - 1; ++i) { 137 target[i] = static_cast<UChar>(source[i]); 138 } 139 140 target[length - 1] = 0x0u; 141 } 142 143 144 static v8::Local<v8::ObjectTemplate> ToLocal(i::Handle<i::Object> handle) { 145 return v8::Utils::ToLocal(i::Handle<i::ObjectTemplateInfo>::cast(handle)); 146 } 147 148 149 template<int internal_fields, i::EternalHandles::SingletonHandle field> 150 static v8::Local<v8::ObjectTemplate> GetEternal(v8::Isolate* external) { 151 i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external); 152 if (isolate->eternal_handles()->Exists(field)) { 153 return ToLocal(isolate->eternal_handles()->GetSingleton(field)); 154 } 155 v8::Local<v8::ObjectTemplate> raw_template(v8::ObjectTemplate::New()); 156 raw_template->SetInternalFieldCount(internal_fields); 157 return ToLocal( 158 isolate->eternal_handles()->CreateSingleton( 159 isolate, 160 *v8::Utils::OpenHandle(*raw_template), 161 field)); 162 } 163 164 165 // static 166 v8::Local<v8::ObjectTemplate> Utils::GetTemplate(v8::Isolate* isolate) { 167 return GetEternal<1, i::EternalHandles::I18N_TEMPLATE_ONE>(isolate); 168 } 169 170 171 // static 172 v8::Local<v8::ObjectTemplate> Utils::GetTemplate2(v8::Isolate* isolate) { 173 return GetEternal<2, i::EternalHandles::I18N_TEMPLATE_TWO>(isolate); 174 } 175 176 177 } // namespace v8_i18n 178
