1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "androidfw/Util.h" 18 19 #include <string> 20 21 #include "utils/ByteOrder.h" 22 #include "utils/Unicode.h" 23 24 #ifdef _WIN32 25 #ifdef ERROR 26 #undef ERROR 27 #endif 28 #endif 29 30 namespace android { 31 namespace util { 32 33 void ReadUtf16StringFromDevice(const uint16_t* src, size_t len, std::string* out) { 34 char buf[5]; 35 while (*src && len != 0) { 36 char16_t c = static_cast<char16_t>(dtohs(*src)); 37 utf16_to_utf8(&c, 1, buf, sizeof(buf)); 38 out->append(buf, strlen(buf)); 39 ++src; 40 --len; 41 } 42 } 43 44 std::u16string Utf8ToUtf16(const StringPiece& utf8) { 45 ssize_t utf16_length = 46 utf8_to_utf16_length(reinterpret_cast<const uint8_t*>(utf8.data()), utf8.length()); 47 if (utf16_length <= 0) { 48 return {}; 49 } 50 51 std::u16string utf16; 52 utf16.resize(utf16_length); 53 utf8_to_utf16(reinterpret_cast<const uint8_t*>(utf8.data()), utf8.length(), &*utf16.begin(), 54 utf16_length + 1); 55 return utf16; 56 } 57 58 std::string Utf16ToUtf8(const StringPiece16& utf16) { 59 ssize_t utf8_length = utf16_to_utf8_length(utf16.data(), utf16.length()); 60 if (utf8_length <= 0) { 61 return {}; 62 } 63 64 std::string utf8; 65 utf8.resize(utf8_length); 66 utf16_to_utf8(utf16.data(), utf16.length(), &*utf8.begin(), utf8_length + 1); 67 return utf8; 68 } 69 70 } // namespace util 71 } // namespace android 72
