michael@0: // Copyright (c) 2011 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #ifndef BASE_STRINGS_UTF_STRING_CONVERSIONS_H_
michael@0: #define BASE_STRINGS_UTF_STRING_CONVERSIONS_H_
michael@0: 
michael@0: #include <string>
michael@0: 
michael@0: #include "base/base_export.h"
michael@0: #include "base/strings/string16.h"
michael@0: #include "base/strings/string_piece.h"
michael@0: 
michael@0: namespace base {
michael@0: 
michael@0: // These convert between UTF-8, -16, and -32 strings. They are potentially slow,
michael@0: // so avoid unnecessary conversions. The low-level versions return a boolean
michael@0: // indicating whether the conversion was 100% valid. In this case, it will still
michael@0: // do the best it can and put the result in the output buffer. The versions that
michael@0: // return strings ignore this error and just return the best conversion
michael@0: // possible.
michael@0: BASE_EXPORT bool WideToUTF8(const wchar_t* src, size_t src_len,
michael@0:                             std::string* output);
michael@0: BASE_EXPORT std::string WideToUTF8(const std::wstring& wide);
michael@0: BASE_EXPORT bool UTF8ToWide(const char* src, size_t src_len,
michael@0:                             std::wstring* output);
michael@0: BASE_EXPORT std::wstring UTF8ToWide(const StringPiece& utf8);
michael@0: 
michael@0: BASE_EXPORT bool WideToUTF16(const wchar_t* src, size_t src_len,
michael@0:                              string16* output);
michael@0: BASE_EXPORT string16 WideToUTF16(const std::wstring& wide);
michael@0: BASE_EXPORT bool UTF16ToWide(const char16* src, size_t src_len,
michael@0:                              std::wstring* output);
michael@0: BASE_EXPORT std::wstring UTF16ToWide(const string16& utf16);
michael@0: 
michael@0: BASE_EXPORT bool UTF8ToUTF16(const char* src, size_t src_len, string16* output);
michael@0: BASE_EXPORT string16 UTF8ToUTF16(const StringPiece& utf8);
michael@0: BASE_EXPORT bool UTF16ToUTF8(const char16* src, size_t src_len,
michael@0:                              std::string* output);
michael@0: BASE_EXPORT std::string UTF16ToUTF8(const string16& utf16);
michael@0: 
michael@0: // We are trying to get rid of wstring as much as possible, but it's too big
michael@0: // a mess to do it all at once.  These conversions should be used when we
michael@0: // really should just be passing a string16 around, but we haven't finished
michael@0: // porting whatever module uses wstring and the conversion is being used as a
michael@0: // stopcock.  This makes it easy to grep for the ones that should be removed.
michael@0: #if defined(OS_WIN)
michael@0: # define WideToUTF16Hack
michael@0: # define UTF16ToWideHack
michael@0: #else
michael@0: # define WideToUTF16Hack WideToUTF16
michael@0: # define UTF16ToWideHack UTF16ToWide
michael@0: #endif
michael@0: 
michael@0: // These convert an ASCII string, typically a hardcoded constant, to a
michael@0: // UTF16/Wide string.
michael@0: BASE_EXPORT std::wstring ASCIIToWide(const StringPiece& ascii);
michael@0: BASE_EXPORT string16 ASCIIToUTF16(const StringPiece& ascii);
michael@0: 
michael@0: }  // namespace base
michael@0: 
michael@0: // TODO(brettw) remove these when callers are fixed up.
michael@0: using base::WideToUTF8;
michael@0: using base::UTF8ToWide;
michael@0: using base::WideToUTF16;
michael@0: using base::UTF16ToWide;
michael@0: using base::UTF8ToUTF16;
michael@0: using base::UTF16ToUTF8;
michael@0: using base::ASCIIToWide;
michael@0: using base::ASCIIToUTF16;
michael@0: 
michael@0: #endif  // BASE_STRINGS_UTF_STRING_CONVERSIONS_H_