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 14namespace 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. 22BASE_EXPORT bool WideToUTF8(const wchar_t* src, size_t src_len, 23 std::string* output); 24BASE_EXPORT std::string WideToUTF8(const std::wstring& wide); 25BASE_EXPORT bool UTF8ToWide(const char* src, size_t src_len, 26 std::wstring* output); 27BASE_EXPORT std::wstring UTF8ToWide(const StringPiece& utf8); 28 29BASE_EXPORT bool WideToUTF16(const wchar_t* src, size_t src_len, 30 string16* output); 31BASE_EXPORT string16 WideToUTF16(const std::wstring& wide); 32BASE_EXPORT bool UTF16ToWide(const char16* src, size_t src_len, 33 std::wstring* output); 34BASE_EXPORT std::wstring UTF16ToWide(const string16& utf16); 35 36BASE_EXPORT bool UTF8ToUTF16(const char* src, size_t src_len, string16* output); 37BASE_EXPORT string16 UTF8ToUTF16(const StringPiece& utf8); 38BASE_EXPORT bool UTF16ToUTF8(const char16* src, size_t src_len, 39 std::string* output); 40BASE_EXPORT std::string UTF16ToUTF8(const string16& utf16); 41 42// These convert an ASCII string, typically a hardcoded constant, to a 43// UTF16/Wide string. 44BASE_EXPORT std::wstring ASCIIToWide(const StringPiece& ascii); 45BASE_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. 49BASE_EXPORT std::string UTF16ToASCII(const string16& utf16); 50 51} // namespace base 52 53#endif // BASE_STRINGS_UTF_STRING_CONVERSIONS_H_ 54