The Tor Browser: ipc/chromium/src/base/sys_string_conversions

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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.

     5 #include "base/sys_string_conversions.h"

     7 #include <windows.h>

     9 #include "base/string_piece.h"

    11 namespace base {

    13 // Do not assert in this function since it is used by the asssertion code!

    14 std::string SysWideToUTF8(const std::wstring& wide) {

    15   return SysWideToMultiByte(wide, CP_UTF8);

    16 }

    18 // Do not assert in this function since it is used by the asssertion code!

    19 std::wstring SysUTF8ToWide(const StringPiece& utf8) {

    20   return SysMultiByteToWide(utf8, CP_UTF8);

    21 }

    23 std::string SysWideToNativeMB(const std::wstring& wide) {

    24   return SysWideToMultiByte(wide, CP_ACP);

    25 }

    27 std::wstring SysNativeMBToWide(const StringPiece& native_mb) {

    28   return SysMultiByteToWide(native_mb, CP_ACP);

    29 }

    31 // Do not assert in this function since it is used by the asssertion code!

    32 std::wstring SysMultiByteToWide(const StringPiece& mb, uint32_t code_page) {

    33   if (mb.empty())

    34     return std::wstring();

    36   int mb_length = static_cast<int>(mb.length());

    37   // Compute the length of the buffer.

    38   int charcount = MultiByteToWideChar(code_page, 0,

    39                                       mb.data(), mb_length, NULL, 0);

    40   if (charcount == 0)

    41     return std::wstring();

    43   std::wstring wide;

    44   wide.resize(charcount);

    45   MultiByteToWideChar(code_page, 0, mb.data(), mb_length, &wide[0], charcount);

    47   return wide;

    48 }

    50 // Do not assert in this function since it is used by the asssertion code!

    51 std::string SysWideToMultiByte(const std::wstring& wide, uint32_t code_page) {

    52   int wide_length = static_cast<int>(wide.length());

    53   if (wide_length == 0)

    54     return std::string();

    56   // Compute the length of the buffer we'll need.

    57   int charcount = WideCharToMultiByte(code_page, 0, wide.data(), wide_length,

    58                                       NULL, 0, NULL, NULL);

    59   if (charcount == 0)

    60     return std::string();

    62   std::string mb;

    63   mb.resize(charcount);

    64   WideCharToMultiByte(code_page, 0, wide.data(), wide_length,

    65                       &mb[0], charcount, NULL, NULL);

    67   return mb;

    68 }

    70 }  // namespace base

The Tor Browser / file revision