Block Oriya locale on Windows XP.

Add IsLocaleSupportedByOS to l10n_util_{win,posix}.cc. Posix version always returns true. Windows blocks Oriya on Windows XP. 

BUG=7325
TEST=1. L10n*.GetAppLocale
     2. On Win XP, Oriya should not be shown in the UI language switch menu while it should be shown elsewhere.

Review URL: http://codereview.chromium.org/45054

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@12557 0039d316-1c4b-4281-b951-d872f2087c98

chrome/chrome.gyp

@@ -197,6 +197,7 @@
         'common/jstemplate_builder.h',
         'common/l10n_util.cc',
         'common/l10n_util.h',
+        'common/l10n_util_posix.cc',
         'common/l10n_util_win.cc',
         'common/l10n_util_win.h',
         'common/libxml_utils.cc',

chrome/common/common.scons

@@ -154,6 +154,7 @@ input_files = ChromeFileList([
     'jstemplate_builder.h',
     'l10n_util.cc',
     'l10n_util.h',
+    'l10n_util_posix.cc',
     'libxml_utils.cc',
     'libxml_utils.h',
     'logging_chrome.cc',
@@ -292,6 +293,7 @@ if not env.Bit('mac'):
 if not env.Bit('posix'):
   input_files.Remove(
       'ipc_channel_posix.cc',
+      'l10n_util_posix.cc',
   )
 
 if env.Bit('windows'):

chrome/common/l10n_util.cc

@@ -128,6 +128,9 @@ bool IsLocaleAvailable(const std::wstring& locale,
   if (test_locale != locale)
     return false;
 
+  if (!l10n_util::IsLocaleSupportedByOS(locale))
+    return false;
+
   FilePath test_path = FilePath::FromWStringHack(locale_path)
       .Append(FilePath::FromWStringHack(locale))
       .ReplaceExtension(kLocaleFileExtension);
@@ -641,6 +644,8 @@ const std::vector<std::string>& GetAvailableLocales() {
       // Filter out the names that have aliases.
       if (IsDuplicateName(locale_name))
         continue;
+      if (!IsLocaleSupportedByOS(ASCIIToWide(locale_name)))
+        continue;
       // Normalize underscores to hyphens because that's what our locale files
       // use.
       std::replace(locale_name.begin(), locale_name.end(), '_', '-');

chrome/common/l10n_util.h

@@ -48,6 +48,11 @@ const char16 kPopDirectionalFormatting = 0x202C;
 // we fall back to en-us.
 std::wstring GetApplicationLocale(const std::wstring& pref_locale);
 
+// Given a locale code, return true if the OS is capable of supporting it.
+// For instance, Oriya is not well supported on Windows XP and we return
+// false for "or".
+bool IsLocaleSupportedByOS(const std::wstring& locale);
+
 // This method returns the Local Name of the Locale Code. For example, for
 // |local_code_wstr| = "en-US", it returns "English (United States)".
 // |app_locale_wstr| can be obtained in the UI thread - for example:

chrome/common/l10n_util_posix.cc

+// Copyright (c) 2009 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 "chrome/common/l10n_util.h"
+
+namespace l10n_util {
+
+// Return true blindly for now.
+bool IsLocaleSupportedByOS(const std::wstring& locale) {
+  return true;
+}
+
+}  // namespace l10n_util

chrome/common/l10n_util_unittest.cc

@@ -8,6 +8,9 @@
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
+#if defined(OS_WIN)
+#include "base/win_util.h"
+#endif
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/l10n_util.h"
 #include "chrome/common/stl_util-inl.h"
@@ -114,6 +117,7 @@ TEST_F(L10nUtilTest, GetAppLocale) {
     L"he",
     L"fil",
     L"nb",
+    L"or",
   };
 
 #if defined(OS_WIN)
@@ -184,6 +188,21 @@ TEST_F(L10nUtilTest, GetAppLocale) {
   SetICUDefaultLocale(L"he");
   EXPECT_EQ(L"en-US", l10n_util::GetApplicationLocale(L"en"));
 
+#if defined(OS_WIN)
+  // Oriya should be blocked unless OS is Vista or newer.
+  if (win_util::GetWinVersion() < win_util::WINVERSION_VISTA) {
+    SetICUDefaultLocale(L"or");
+    EXPECT_EQ(L"en-US", l10n_util::GetApplicationLocale(L""));
+    SetICUDefaultLocale(L"en-GB");
+    EXPECT_EQ(L"en-GB", l10n_util::GetApplicationLocale(L"or"));
+  } else {
+    SetICUDefaultLocale(L"or");
+    EXPECT_EQ(L"or", l10n_util::GetApplicationLocale(L""));
+    SetICUDefaultLocale(L"en-GB");
+    EXPECT_EQ(L"or", l10n_util::GetApplicationLocale(L"or"));
+  }
+#endif
+
   // Clean up.
   PathService::Override(chrome::DIR_LOCALES, orig_locale_dir);
   file_util::Delete(new_locale_dir, true);

chrome/common/l10n_util_win.cc

@@ -5,6 +5,8 @@
 #include "chrome/common/l10n_util.h"
 #include "chrome/common/l10n_util_win.h"
 
+#include "base/win_util.h"
+
 namespace l10n_util {
 
 int GetExtendedStyles() {
@@ -31,4 +33,10 @@ void HWNDSetRTLLayout(HWND hwnd) {
   }
 }
 
+bool IsLocaleSupportedByOS(const std::wstring& locale) {
+  // Block Oriya on Windows XP.
+  return !(LowerCaseEqualsASCII(locale, "or") &&
+      win_util::GetWinVersion() < win_util::WINVERSION_VISTA);
+}
+
 }  // namespace l10n_util