l10n_string_util.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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
19namespace {
20
21const installer::LanguageSelector& GetLanguageSelector() {
22  static const installer::LanguageSelector instance;
23
24  return instance;
25}
26
27installer::TranslationDelegate* g_translation_delegate = NULL;
28
29}  // namespace
30
31namespace installer {
32
33TranslationDelegate::~TranslationDelegate() {
34}
35
36void SetTranslationDelegate(TranslationDelegate* delegate) {
37  g_translation_delegate = delegate;
38}
39
40std::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
58base::string16 GetLocalizedStringF(int base_message_id,
59                                   const base::string16& a) {
60  return ReplaceStringPlaceholders(GetLocalizedString(base_message_id),
61                                   std::vector<base::string16>(1, a),
62                                   NULL);
63}
64
65// Here we generate the url spec with the Microsoft res:// scheme which is
66// explained here : http://support.microsoft.com/kb/220830
67std::wstring GetLocalizedEulaResource() {
68  wchar_t full_exe_path[MAX_PATH];
69  int len = ::GetModuleFileName(NULL, full_exe_path, MAX_PATH);
70  if (len == 0 || len == MAX_PATH)
71    return L"";
72
73  // The resource names are more or less the upcased language names.
74  std::wstring language(GetLanguageSelector().selected_translation());
75  std::replace(language.begin(), language.end(), L'-', L'_');
76  StringToUpperASCII(&language);
77
78  std::wstring resource(L"IDR_OEMPG_");
79  resource.append(language).append(L".HTML");
80
81  // Fall back on "en" if we don't have a resource for this language.
82  if (NULL == FindResource(NULL, resource.c_str(), RT_HTML))
83    resource = L"IDR_OEMPG_EN.HTML";
84
85  // Spaces and DOS paths must be url encoded.
86  std::wstring url_path =
87      base::StringPrintf(L"res://%ls/#23/%ls", full_exe_path, resource.c_str());
88
89  // The cast is safe because url_path has limited length
90  // (see the definition of full_exe_path and resource).
91  DCHECK(kuint32max > (url_path.size() * 3));
92  DWORD count = static_cast<DWORD>(url_path.size() * 3);
93  scoped_ptr<wchar_t[]> url_canon(new wchar_t[count]);
94  HRESULT hr = ::UrlCanonicalizeW(url_path.c_str(), url_canon.get(),
95                                  &count, URL_ESCAPE_UNSAFE);
96  if (SUCCEEDED(hr))
97    return std::wstring(url_canon.get());
98  return url_path;
99}
100
101std::wstring GetCurrentTranslation() {
102  return GetLanguageSelector().selected_translation();
103}
104
105}  // namespace installer
106