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106 lines
3.8 KiB
106 lines
3.8 KiB
/* |
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* Copyright (C) 2015 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#ifndef ANDROID_BASE_UTF8_H |
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#define ANDROID_BASE_UTF8_H |
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#ifdef _WIN32 |
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#include <string> |
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#else |
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// Bring in prototypes for standard APIs so that we can import them into the utf8 namespace. |
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#include <fcntl.h> // open |
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#include <stdio.h> // fopen |
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#include <sys/stat.h> // mkdir |
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#include <unistd.h> // unlink |
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#endif |
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namespace android { |
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namespace base { |
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// Only available on Windows because this is only needed on Windows. |
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#ifdef _WIN32 |
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// Convert size number of UTF-16 wchar_t's to UTF-8. Returns whether the |
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// conversion was done successfully. |
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bool WideToUTF8(const wchar_t* utf16, const size_t size, std::string* utf8); |
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// Convert a NULL-terminated string of UTF-16 characters to UTF-8. Returns |
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// whether the conversion was done successfully. |
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bool WideToUTF8(const wchar_t* utf16, std::string* utf8); |
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// Convert a UTF-16 std::wstring (including any embedded NULL characters) to |
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// UTF-8. Returns whether the conversion was done successfully. |
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bool WideToUTF8(const std::wstring& utf16, std::string* utf8); |
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// Convert size number of UTF-8 char's to UTF-16. Returns whether the conversion |
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// was done successfully. |
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bool UTF8ToWide(const char* utf8, const size_t size, std::wstring* utf16); |
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// Convert a NULL-terminated string of UTF-8 characters to UTF-16. Returns |
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// whether the conversion was done successfully. |
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bool UTF8ToWide(const char* utf8, std::wstring* utf16); |
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// Convert a UTF-8 std::string (including any embedded NULL characters) to |
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// UTF-16. Returns whether the conversion was done successfully. |
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bool UTF8ToWide(const std::string& utf8, std::wstring* utf16); |
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// Convert a file system path, represented as a NULL-terminated string of |
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// UTF-8 characters, to a UTF-16 string representing the same file system |
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// path using the Windows extended-lengh path representation. |
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// |
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// See https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#MAXPATH: |
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// ```The Windows API has many functions that also have Unicode versions to |
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// permit an extended-length path for a maximum total path length of 32,767 |
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// characters. To specify an extended-length path, use the "\\?\" prefix. |
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// For example, "\\?\D:\very long path".``` |
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// |
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// Returns whether the conversion was done successfully. |
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bool UTF8PathToWindowsLongPath(const char* utf8, std::wstring* utf16); |
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#endif |
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// The functions in the utf8 namespace take UTF-8 strings. For Windows, these |
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// are wrappers, for non-Windows these just expose existing APIs. To call these |
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// functions, use: |
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// |
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// // anonymous namespace to avoid conflict with existing open(), unlink(), etc. |
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// namespace { |
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// // Import functions into anonymous namespace. |
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// using namespace android::base::utf8; |
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// |
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// void SomeFunction(const char* name) { |
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// int fd = open(name, ...); // Calls android::base::utf8::open(). |
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// ... |
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// unlink(name); // Calls android::base::utf8::unlink(). |
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// } |
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// } |
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namespace utf8 { |
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#ifdef _WIN32 |
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FILE* fopen(const char* name, const char* mode); |
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int mkdir(const char* name, mode_t mode); |
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int open(const char* name, int flags, ...); |
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int unlink(const char* name); |
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#else |
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using ::fopen; |
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using ::mkdir; |
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using ::open; |
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using ::unlink; |
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#endif |
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} // namespace utf8 |
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} // namespace base |
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} // namespace android |
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#endif // ANDROID_BASE_UTF8_H
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