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_OLD_UTF_STRING_CONVERSIONS_H_ 6 #define BASE_STRINGS_OLD_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_old { 17 18 using base::char16; 19 using base::string16; 20 using base::StringPiece16; 21 using base::StringPiece; 22 23 // These convert between UTF-8, -16, and -32 strings. They are potentially slow, 24 // so avoid unnecessary conversions. The low-level versions return a boolean 25 // indicating whether the conversion was 100% valid. In this case, it will still 26 // do the best it can and put the result in the output buffer. The versions that 27 // return strings ignore this error and just return the best conversion 28 // possible. 29 BASE_EXPORT bool WideToUTF8(const wchar_t* src, 30 size_t src_len, 31 std::string* output); 32 BASE_EXPORT std::string WideToUTF8(const std::wstring& wide); 33 BASE_EXPORT bool UTF8ToWide(const char* src, 34 size_t src_len, 35 std::wstring* output); 36 BASE_EXPORT std::wstring UTF8ToWide(StringPiece utf8); 37 38 BASE_EXPORT bool WideToUTF16(const wchar_t* src, 39 size_t src_len, 40 string16* output); 41 BASE_EXPORT string16 WideToUTF16(const std::wstring& wide); 42 BASE_EXPORT bool UTF16ToWide(const char16* src, 43 size_t src_len, 44 std::wstring* output); 45 BASE_EXPORT std::wstring UTF16ToWide(const string16& utf16); 46 47 BASE_EXPORT bool UTF8ToUTF16(const char* src, size_t src_len, string16* output); 48 BASE_EXPORT string16 UTF8ToUTF16(StringPiece utf8); 49 BASE_EXPORT bool UTF16ToUTF8(const char16* src, 50 size_t src_len, 51 std::string* output); 52 BASE_EXPORT std::string UTF16ToUTF8(StringPiece16 utf16); 53 54 // This converts an ASCII string, typically a hardcoded constant, to a UTF16 55 // string. 56 BASE_EXPORT string16 ASCIIToUTF16(StringPiece ascii); 57 58 // Converts to 7-bit ASCII by truncating. The result must be known to be ASCII 59 // beforehand. 60 BASE_EXPORT std::string UTF16ToASCII(StringPiece16 utf16); 61 62 } // namespace base_old 63 64 #endif // BASE_STRINGS_OLD_UTF_STRING_CONVERSIONS_H_ 65