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 <stddef.h> 9 10 #include <string> 11 12 #include "base/base_export.h" 13 #include "base/strings/string16.h" 14 #include "base/strings/string_piece.h" 15 16 namespace base { 17 18 // These convert between UTF-8, -16, and -32 strings. They are potentially slow, 19 // so avoid unnecessary conversions. The low-level versions return a boolean 20 // indicating whether the conversion was 100% valid. In this case, it will still 21 // do the best it can and put the result in the output buffer. The versions that 22 // return strings ignore this error and just return the best conversion 23 // possible. 24 BASE_EXPORT bool WideToUTF8(const wchar_t* src, size_t src_len, 25 std::string* output); 26 BASE_EXPORT std::string WideToUTF8(const std::wstring& wide); 27 BASE_EXPORT bool UTF8ToWide(const char* src, size_t src_len, 28 std::wstring* output); 29 BASE_EXPORT std::wstring UTF8ToWide(StringPiece utf8); 30 31 BASE_EXPORT bool WideToUTF16(const wchar_t* src, size_t src_len, 32 string16* output); 33 BASE_EXPORT string16 WideToUTF16(const std::wstring& wide); 34 BASE_EXPORT bool UTF16ToWide(const char16* src, size_t src_len, 35 std::wstring* output); 36 BASE_EXPORT std::wstring UTF16ToWide(const string16& utf16); 37 38 BASE_EXPORT bool UTF8ToUTF16(const char* src, size_t src_len, string16* output); 39 BASE_EXPORT string16 UTF8ToUTF16(StringPiece utf8); 40 BASE_EXPORT bool UTF16ToUTF8(const char16* src, size_t src_len, 41 std::string* output); 42 BASE_EXPORT std::string UTF16ToUTF8(StringPiece16 utf16); 43 44 // This converts an ASCII string, typically a hardcoded constant, to a UTF16 45 // string. 46 BASE_EXPORT string16 ASCIIToUTF16(StringPiece ascii); 47 48 // Converts to 7-bit ASCII by truncating. The result must be known to be ASCII 49 // beforehand. 50 BASE_EXPORT std::string UTF16ToASCII(StringPiece16 utf16); 51 52 } // namespace base 53 54 #endif // BASE_STRINGS_UTF_STRING_CONVERSIONS_H_ 55