1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef PLATFORM_UTIL_HELPER_H 17 #define PLATFORM_UTIL_HELPER_H 18 19 #include <codecvt> 20 #include <locale> 21 #include <string> 22 23 #include "unicode/unistr.h" 24 #include "unicode/ucnv.h" 25 #include "napi/native_api.h" 26 #include "napi/native_node_api.h" 27 #include "tools/log.h" 28 29 namespace Commonlibrary::Platform { 30 constexpr uint8_t HIGER_4_BITS_MASK = 0xF0; 31 constexpr uint8_t FOUR_BYTES_STYLE = 0xF0; 32 constexpr uint8_t THREE_BYTES_STYLE = 0xE0; 33 constexpr uint8_t TWO_BYTES_STYLE1 = 0xD0; 34 constexpr uint8_t TWO_BYTES_STYLE2 = 0xC0; 35 constexpr uint32_t LOWER_10_BITS_MASK = 0x03FFU; 36 constexpr uint8_t LOWER_6_BITS_MASK = 0x3FU; 37 constexpr uint8_t LOWER_5_BITS_MASK = 0x1FU; 38 constexpr uint8_t LOWER_4_BITS_MASK = 0x0FU; 39 constexpr uint8_t LOWER_3_BITS_MASK = 0x07U; 40 constexpr uint32_t HIGH_AGENT_MASK = 0xD800U; 41 constexpr uint32_t LOW_AGENT_MASK = 0xDC00U; 42 constexpr uint32_t UTF8_VALID_BITS = 6; 43 constexpr uint32_t UTF16_SPECIAL_VALUE = 0x10000; 44 45 struct TextEcodeInfo { TextEcodeInfoTextEcodeInfo46 TextEcodeInfo(napi_env napiEnv, napi_value srcValue, std::string encodingStr): env(napiEnv), 47 src(srcValue), 48 encoding(encodingStr) 49 {} 50 napi_env env; 51 napi_value src; 52 std::string encoding; 53 }; 54 UConverter* CreateConverter(const std::string& encStr_, UErrorCode& codeflag); 55 std::string ConvertToString(UChar* uchar, size_t length); 56 void EncodeIntoChinese(napi_env env, napi_value src, std::string encoding, std::string& buffer); 57 std::string UnicodeConversion(std::string encoding, char16_t* originalBuffer, size_t inputSize); 58 void EncodeToUtf8(TextEcodeInfo encodeInfo, char* writeResult, int32_t* written, size_t length, int32_t* nchars); 59 void EncodeConversion(napi_env env, napi_value src, napi_value* arrayBuffer, size_t &outLens, 60 std::string encoding); 61 void FreedMemory(char *data); 62 int GetMaxByteSize(std::string encoding); 63 bool IsOneByte(uint8_t u8Char); 64 std::u16string Utf8ToUtf16BE(const std::string &u8Str, bool *ok = nullptr); 65 std::u16string Utf16BEToLE(const std::u16string &wstr); 66 void OtherEncode(napi_env env, napi_value src, napi_value* arrayBuffer, size_t &outLens, std::string encoding); 67 std::u16string EncodeUtf16BE(napi_env env, napi_value src); 68 void OtherEncodeUtf8(TextEcodeInfo encodeInfo, char* writeResult, int32_t* written, size_t length, int32_t* nchars); 69 void EncodeTo16BE(TextEcodeInfo encodeInfo, char* writeResult, int32_t* written, size_t length, int32_t* nchars); 70 } // namespace Commonlibrary::Platform 71 #endif // PLATFORM_UTIL_HELPER_H