ipc/glue/StringUtil.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "base/string_util.h"
   8
   9 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
  10 // Use of this source code is governed by a BSD-style license that can be
  11 // found in the LICENSE file.
  12
  13 #include "base/sys_string_conversions.h"
  14
  15 #include "base/string_piece.h"
  16 #include "base/string_util.h"
  17
  18 #include "build/build_config.h"
  19
  20 // FIXME/cjones: these really only pertain to the linux sys string
  21 // converters.
  22 #ifdef WCHAR_T_IS_UTF16
  23 #  define ICONV_WCHAR_T_ENCODING "UTF-16"
  24 #else
  25 #  define ICONV_WCHAR_T_ENCODING "WCHAR_T"
  26 #endif
  27
  28 // FIXME/cjones: BIG assumption here that std::string is a good
  29 // container of UTF8-encoded strings.  this is probably wrong, as its
  30 // API doesn't really make sense for UTF8.
  31
  32 namespace base {
  33
  34 // FIXME/cjones: as its name implies, this function is a hack.
  35 template <typename FromType, typename ToType>
  36 ToType GhettoStringConvert(const FromType& in) {
  37   // FIXME/cjones: assumes no non-ASCII characters in |in|
  38   ToType out;
  39   out.resize(in.length());
  40   for (int i = 0; i < static_cast<int>(in.length()); ++i)
  41     out[i] = static_cast<typename ToType::value_type>(in[i]);
  42   return out;
  43 }
  44
  45 }  // namespace base
  46
  47 // Implement functions that were in the chromium ICU library, which
  48 // we're not taking.
  49
  50 std::string WideToUTF8(const std::wstring& wide) {
  51   return base::SysWideToUTF8(wide);
  52 }
  53
  54 std::wstring UTF8ToWide(const StringPiece& utf8) {
  55   return base::SysUTF8ToWide(utf8);
  56 }
  57
  58 namespace base {
  59
  60 // FIXME/cjones: here we're entirely replacing the linux string
  61 // converters, and implementing the one that doesn't exist for OS X
  62 // and Windows.
  63
  64 #if !defined(OS_MACOSX) && !defined(OS_WIN)
  65 std::string SysWideToUTF8(const std::wstring& wide) {
  66   // FIXME/cjones: do this with iconv
  67   return GhettoStringConvert<std::wstring, std::string>(wide);
  68 }
  69 #endif
  70
  71 #if !defined(OS_MACOSX) && !defined(OS_WIN)
  72 std::wstring SysUTF8ToWide(const StringPiece& utf8) {
  73   // FIXME/cjones: do this with iconv
  74   return GhettoStringConvert<StringPiece, std::wstring>(utf8);
  75 }
  76
  77 std::string SysWideToNativeMB(const std::wstring& wide) {
  78   // TODO(evanm): we can't assume Linux is UTF-8.
  79   return SysWideToUTF8(wide);
  80 }
  81
  82 std::wstring SysNativeMBToWide(const StringPiece& native_mb) {
  83   // TODO(evanm): we can't assume Linux is UTF-8.
  84   return SysUTF8ToWide(native_mb);
  85 }
  86 #endif
  87
  88 }  // namespace base