1 /* 2 * Copyright (C) 2015 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 #ifndef ANDROID_BASE_UTF8_H 18 #define ANDROID_BASE_UTF8_H 19 20 #ifdef _WIN32 21 #include <string> 22 #else 23 // Bring in prototypes for standard APIs so that we can import them into the utf8 namespace. 24 #include <fcntl.h> // open 25 #include <unistd.h> // unlink 26 #endif 27 28 namespace android { 29 namespace base { 30 31 // Only available on Windows because this is only needed on Windows. 32 #ifdef _WIN32 33 // Convert size number of UTF-16 wchar_t's to UTF-8. Returns whether the 34 // conversion was done successfully. 35 bool WideToUTF8(const wchar_t* utf16, const size_t size, std::string* utf8); 36 37 // Convert a NULL-terminated string of UTF-16 characters to UTF-8. Returns 38 // whether the conversion was done successfully. 39 bool WideToUTF8(const wchar_t* utf16, std::string* utf8); 40 41 // Convert a UTF-16 std::wstring (including any embedded NULL characters) to 42 // UTF-8. Returns whether the conversion was done successfully. 43 bool WideToUTF8(const std::wstring& utf16, std::string* utf8); 44 45 // Convert size number of UTF-8 char's to UTF-16. Returns whether the conversion 46 // was done successfully. 47 bool UTF8ToWide(const char* utf8, const size_t size, std::wstring* utf16); 48 49 // Convert a NULL-terminated string of UTF-8 characters to UTF-16. Returns 50 // whether the conversion was done successfully. 51 bool UTF8ToWide(const char* utf8, std::wstring* utf16); 52 53 // Convert a UTF-8 std::string (including any embedded NULL characters) to 54 // UTF-16. Returns whether the conversion was done successfully. 55 bool UTF8ToWide(const std::string& utf8, std::wstring* utf16); 56 #endif 57 58 // The functions in the utf8 namespace take UTF-8 strings. For Windows, these 59 // are wrappers, for non-Windows these just expose existing APIs. To call these 60 // functions, use: 61 // 62 // // anonymous namespace to avoid conflict with existing open(), unlink(), etc. 63 // namespace { 64 // // Import functions into anonymous namespace. 65 // using namespace android::base::utf8; 66 // 67 // void SomeFunction(const char* name) { 68 // int fd = open(name, ...); // Calls android::base::utf8::open(). 69 // ... 70 // unlink(name); // Calls android::base::utf8::unlink(). 71 // } 72 // } 73 namespace utf8 { 74 75 #ifdef _WIN32 76 int open(const char* name, int flags, ...); 77 int unlink(const char* name); 78 #else 79 using ::open; 80 using ::unlink; 81 #endif 82 83 } // namespace utf8 84 } // namespace base 85 } // namespace android 86 87 #endif // ANDROID_BASE_UTF8_H 88
