1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_STRINGS_UTF_STRING_CONVERSIONS_H_ 6 #define BASE_STRINGS_UTF_STRING_CONVERSIONS_H_ 7 8 #include <string> 9 10 #include "base/base_export.h" 11 #include "base/strings/string16.h" 12 #include "base/strings/string_piece.h" 13 14 namespace base { 15 16 // These convert between UTF-8, -16, and -32 strings. They are potentially slow, 17 // so avoid unnecessary conversions. The low-level versions return a boolean 18 // indicating whether the conversion was 100% valid. In this case, it will still 19 // do the best it can and put the result in the output buffer. The versions that 20 // return strings ignore this error and just return the best conversion 21 // possible. 22 BASE_EXPORT bool WideToUTF8(const wchar_t* src, size_t src_len, 23 std::string* output); 24 BASE_EXPORT std::string WideToUTF8(const std::wstring& wide); 25 BASE_EXPORT bool UTF8ToWide(const char* src, size_t src_len, 26 std::wstring* output); 27 BASE_EXPORT std::wstring UTF8ToWide(const StringPiece& utf8); 28 29 BASE_EXPORT bool WideToUTF16(const wchar_t* src, size_t src_len, 30 string16* output); 31 BASE_EXPORT string16 WideToUTF16(const std::wstring& wide); 32 BASE_EXPORT bool UTF16ToWide(const char16* src, size_t src_len, 33 std::wstring* output); 34 BASE_EXPORT std::wstring UTF16ToWide(const string16& utf16); 35 36 BASE_EXPORT bool UTF8ToUTF16(const char* src, size_t src_len, string16* output); 37 BASE_EXPORT string16 UTF8ToUTF16(const StringPiece& utf8); 38 BASE_EXPORT bool UTF16ToUTF8(const char16* src, size_t src_len, 39 std::string* output); 40 BASE_EXPORT std::string UTF16ToUTF8(const string16& utf16); 41 42 // These convert an ASCII string, typically a hardcoded constant, to a 43 // UTF16/Wide string. 44 BASE_EXPORT std::wstring ASCIIToWide(const StringPiece& ascii); 45 BASE_EXPORT string16 ASCIIToUTF16(const StringPiece& ascii); 46 47 // Converts to 7-bit ASCII by truncating. The result must be known to be ASCII 48 // beforehand. 49 BASE_EXPORT std::string UTF16ToASCII(const string16& utf16); 50 51 } // namespace base 52 53 #endif // BASE_STRINGS_UTF_STRING_CONVERSIONS_H_ 54