1 // Copyright (c) 2006-2008 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 #include "base/strings/sys_string_conversions.h"
6
7 #include <windows.h>
8 #include <stdint.h>
9
10 #include "base/strings/string_piece.h"
11
12 namespace base {
13
14 // Do not assert in this function since it is used by the asssertion code!
SysWideToUTF8(const std::wstring & wide)15 std::string SysWideToUTF8(const std::wstring& wide) {
16 return SysWideToMultiByte(wide, CP_UTF8);
17 }
18
19 // Do not assert in this function since it is used by the asssertion code!
SysUTF8ToWide(StringPiece utf8)20 std::wstring SysUTF8ToWide(StringPiece utf8) {
21 return SysMultiByteToWide(utf8, CP_UTF8);
22 }
23
SysWideToNativeMB(const std::wstring & wide)24 std::string SysWideToNativeMB(const std::wstring& wide) {
25 return SysWideToMultiByte(wide, CP_ACP);
26 }
27
SysNativeMBToWide(StringPiece native_mb)28 std::wstring SysNativeMBToWide(StringPiece native_mb) {
29 return SysMultiByteToWide(native_mb, CP_ACP);
30 }
31
32 // Do not assert in this function since it is used by the asssertion code!
SysMultiByteToWide(StringPiece mb,uint32_t code_page)33 std::wstring SysMultiByteToWide(StringPiece mb, uint32_t code_page) {
34 if (mb.empty())
35 return std::wstring();
36
37 int mb_length = static_cast<int>(mb.length());
38 // Compute the length of the buffer.
39 int charcount = MultiByteToWideChar(code_page, 0,
40 mb.data(), mb_length, NULL, 0);
41 if (charcount == 0)
42 return std::wstring();
43
44 std::wstring wide;
45 wide.resize(charcount);
46 MultiByteToWideChar(code_page, 0, mb.data(), mb_length, &wide[0], charcount);
47
48 return wide;
49 }
50
51 // Do not assert in this function since it is used by the asssertion code!
SysWideToMultiByte(const std::wstring & wide,uint32_t code_page)52 std::string SysWideToMultiByte(const std::wstring& wide, uint32_t code_page) {
53 int wide_length = static_cast<int>(wide.length());
54 if (wide_length == 0)
55 return std::string();
56
57 // Compute the length of the buffer we'll need.
58 int charcount = WideCharToMultiByte(code_page, 0, wide.data(), wide_length,
59 NULL, 0, NULL, NULL);
60 if (charcount == 0)
61 return std::string();
62
63 std::string mb;
64 mb.resize(charcount);
65 WideCharToMultiByte(code_page, 0, wide.data(), wide_length,
66 &mb[0], charcount, NULL, NULL);
67
68 return mb;
69 }
70
71 } // namespace base
72