chrome/installer/util/l10n_string_util.cc

   1 // Copyright (c) 2012 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 // This file defines utility functions for fetching localized resources.
   6
   7 #include "chrome/installer/util/l10n_string_util.h"
   8
   9 #include <atlbase.h>
  10
  11 #include <algorithm>
  12
  13 #include "base/logging.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/strings/string_util.h"
  16 #include "base/strings/stringprintf.h"
  17 #include "chrome/installer/util/language_selector.h"
  18
  19 namespace {
  20
  21 const installer::LanguageSelector& GetLanguageSelector() {
  22   static const installer::LanguageSelector instance;
  23
  24   return instance;
  25 }
  26
  27 installer::TranslationDelegate* g_translation_delegate = NULL;
  28
  29 }  // namespace
  30
  31 namespace installer {
  32
  33 TranslationDelegate::~TranslationDelegate() {
  34 }
  35
  36 void SetTranslationDelegate(TranslationDelegate* delegate) {
  37   g_translation_delegate = delegate;
  38 }
  39
  40 std::wstring GetLocalizedString(int base_message_id) {
  41   if (g_translation_delegate)
  42     return g_translation_delegate->GetLocalizedString(base_message_id);
  43
  44   std::wstring localized_string;
  45
  46   int message_id = base_message_id + GetLanguageSelector().offset();
  47   const ATLSTRINGRESOURCEIMAGE* image = AtlGetStringResourceImage(
  48       _AtlBaseModule.GetModuleInstance(), message_id);
  49   if (image) {
  50     localized_string = std::wstring(image->achString, image->nLength);
  51   } else {
  52     NOTREACHED() << "Unable to find resource id " << message_id;
  53   }
  54
  55   return localized_string;
  56 }
  57
  58 // Here we generate the url spec with the Microsoft res:// scheme which is
  59 // explained here : http://support.microsoft.com/kb/220830
  60 std::wstring GetLocalizedEulaResource() {
  61   wchar_t full_exe_path[MAX_PATH];
  62   int len = ::GetModuleFileName(NULL, full_exe_path, MAX_PATH);
  63   if (len == 0 || len == MAX_PATH)
  64     return L"";
  65
  66   // The resource names are more or less the upcased language names.
  67   std::wstring language(GetLanguageSelector().selected_translation());
  68   std::replace(language.begin(), language.end(), L'-', L'_');
  69   StringToUpperASCII(&language);
  70
  71   std::wstring resource(L"IDR_OEMPG_");
  72   resource.append(language).append(L".HTML");
  73
  74   // Fall back on "en" if we don't have a resource for this language.
  75   if (NULL == FindResource(NULL, resource.c_str(), RT_HTML))
  76     resource = L"IDR_OEMPG_EN.HTML";
  77
  78   // Spaces and DOS paths must be url encoded.
  79   std::wstring url_path =
  80       base::StringPrintf(L"res://%ls/#23/%ls", full_exe_path, resource.c_str());
  81
  82   // The cast is safe because url_path has limited length
  83   // (see the definition of full_exe_path and resource).
  84   DCHECK(kuint32max > (url_path.size() * 3));
  85   DWORD count = static_cast<DWORD>(url_path.size() * 3);
  86   scoped_ptr<wchar_t[]> url_canon(new wchar_t[count]);
  87   HRESULT hr = ::UrlCanonicalizeW(url_path.c_str(), url_canon.get(),
  88                                   &count, URL_ESCAPE_UNSAFE);
  89   if (SUCCEEDED(hr))
  90     return std::wstring(url_canon.get());
  91   return url_path;
  92 }
  93
  94 std::wstring GetCurrentTranslation() {
  95   return GetLanguageSelector().selected_translation();
  96 }
  97
  98 }  // namespace installer