import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

ipc/glue/StringUtil.cpp

@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "base/string_util.h"
+
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/sys_string_conversions.h"
+
+#include "base/string_piece.h"
+#include "base/string_util.h"
+
+#include "build/build_config.h"
+
+// FIXME/cjones: these really only pertain to the linux sys string
+// converters.
+#ifdef WCHAR_T_IS_UTF16
+#  define ICONV_WCHAR_T_ENCODING "UTF-16"
+#else
+#  define ICONV_WCHAR_T_ENCODING "WCHAR_T"
+#endif
+
+// FIXME/cjones: BIG assumption here that std::string is a good
+// container of UTF8-encoded strings.  this is probably wrong, as its
+// API doesn't really make sense for UTF8.
+
+namespace base {
+
+// FIXME/cjones: as its name implies, this function is a hack.
+template<typename FromType, typename ToType>
+ToType
+GhettoStringConvert(const FromType& in)
+{
+  // FIXME/cjones: assumes no non-ASCII characters in |in|
+  ToType out;
+  out.resize(in.length());
+  for (int i = 0; i < static_cast<int>(in.length()); ++i)
+      out[i] = static_cast<typename ToType::value_type>(in[i]);
+  return out;
+}
+
+} // namespace base
+
+// Implement functions that were in the chromium ICU library, which
+// we're not taking.
+
+std::string
+WideToUTF8(const std::wstring& wide)
+{
+    return base::SysWideToUTF8(wide);
+}
+
+std::wstring
+UTF8ToWide(const StringPiece& utf8)
+{
+    return base::SysUTF8ToWide(utf8);
+}
+
+namespace base {
+
+// FIXME/cjones: here we're entirely replacing the linux string
+// converters, and implementing the one that doesn't exist for OS X
+// and Windows.
+
+#if !defined(OS_MACOSX) && !defined(OS_WIN)
+std::string SysWideToUTF8(const std::wstring& wide) {
+  // FIXME/cjones: do this with iconv
+  return GhettoStringConvert<std::wstring, std::string>(wide);
+}
+#endif
+
+#if !defined(OS_MACOSX) && !defined(OS_WIN)
+std::wstring SysUTF8ToWide(const StringPiece& utf8) {
+  // FIXME/cjones: do this with iconv
+  return GhettoStringConvert<StringPiece, std::wstring>(utf8);
+}
+
+std::string SysWideToNativeMB(const std::wstring& wide) {
+  // TODO(evanm): we can't assume Linux is UTF-8.
+  return SysWideToUTF8(wide);
+}
+
+std::wstring SysNativeMBToWide(const StringPiece& native_mb) {
+  // TODO(evanm): we can't assume Linux is UTF-8.
+  return SysUTF8ToWide(native_mb);
+}
+#endif
+
+} // namespace base