1 // Copyright (c) 2009 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_UTF_STRING_CONVERSIONS_H_ 6 #define BASE_UTF_STRING_CONVERSIONS_H_ 7 8 #include <string> 9 10 #include "base/string16.h" 11 12 namespace base { 13 class StringPiece; 14 } 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 // 23 // Note that only the structural validity is checked and non-character 24 // codepoints and unassigned are regarded as valid. 25 // TODO(jungshik): Consider replacing an invalid input sequence with 26 // the Unicode replacement character or adding |replacement_char| parameter. 27 // Currently, it's skipped in the ouput, which could be problematic in 28 // some situations. 29 bool WideToUTF8(const wchar_t* src, size_t src_len, std::string* output); 30 std::string WideToUTF8(const std::wstring& wide); 31 bool UTF8ToWide(const char* src, size_t src_len, std::wstring* output); 32 std::wstring UTF8ToWide(const base::StringPiece& utf8); 33 34 bool WideToUTF16(const wchar_t* src, size_t src_len, string16* output); 35 string16 WideToUTF16(const std::wstring& wide); 36 bool UTF16ToWide(const char16* src, size_t src_len, std::wstring* output); 37 std::wstring UTF16ToWide(const string16& utf16); 38 39 bool UTF8ToUTF16(const char* src, size_t src_len, string16* output); 40 string16 UTF8ToUTF16(const std::string& utf8); 41 bool UTF16ToUTF8(const char16* src, size_t src_len, std::string* output); 42 std::string UTF16ToUTF8(const string16& utf16); 43 44 // We are trying to get rid of wstring as much as possible, but it's too big 45 // a mess to do it all at once. These conversions should be used when we 46 // really should just be passing a string16 around, but we haven't finished 47 // porting whatever module uses wstring and the conversion is being used as a 48 // stopcock. This makes it easy to grep for the ones that should be removed. 49 #if defined(OS_WIN) 50 # define WideToUTF16Hack 51 # define UTF16ToWideHack 52 #else 53 # define WideToUTF16Hack WideToUTF16 54 # define UTF16ToWideHack UTF16ToWide 55 #endif 56 57 #endif // BASE_UTF_STRING_CONVERSIONS_H_ 58