The Tor Browser: intl/locale/src/nsLanguageAtomService.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "nsLanguageAtomService.h"

     7 #include "nsICharsetConverterManager.h"

     8 #include "nsILocaleService.h"

     9 #include "nsUnicharUtils.h"

    10 #include "nsIAtom.h"

    11 #include "mozilla/Services.h"

    12 #include "nsServiceManagerUtils.h"

    14 NS_IMPL_ISUPPORTS(nsLanguageAtomService, nsILanguageAtomService)

    16 nsLanguageAtomService::nsLanguageAtomService()

    17 {

    18 }

    20 nsresult

    21 nsLanguageAtomService::InitLangGroupTable()

    22 {

    23   if (mLangGroups)

    24     return NS_OK;

    26   nsCOMPtr<nsIStringBundleService> bundleService =

    27     mozilla::services::GetStringBundleService();

    28   if (!bundleService)

    29     return NS_ERROR_FAILURE;

    31   return bundleService->CreateBundle("resource://gre/res/langGroups.properties",

    32                                      getter_AddRefs(mLangGroups));

    33 }

    35 nsIAtom*

    36 nsLanguageAtomService::LookupLanguage(const nsACString &aLanguage,

    37                                       nsresult *aError)

    38 {

    39   nsAutoCString lowered(aLanguage);

    40   ToLowerCase(lowered);

    42   nsCOMPtr<nsIAtom> lang = do_GetAtom(lowered);

    43   return GetLanguageGroup(lang, aError);

    44 }

    46 already_AddRefed<nsIAtom>

    47 nsLanguageAtomService::LookupCharSet(const char *aCharSet, nsresult *aError)

    48 {

    49   if (!mCharSets) {

    50     mCharSets = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID);

    51     if (!mCharSets) {

    52       if (aError)

    53         *aError = NS_ERROR_FAILURE;

    55       return nullptr;

    56     }

    57   }

    59   nsCOMPtr<nsIAtom> langGroup;

    60   mCharSets->GetCharsetLangGroup(aCharSet, getter_AddRefs(langGroup));

    61   if (!langGroup) {

    62     if (aError)

    63       *aError = NS_ERROR_FAILURE;

    65     return nullptr;

    66   }

    68   if (aError)

    69     *aError = NS_OK;

    71   return langGroup.forget();

    72 }

    74 nsIAtom*

    75 nsLanguageAtomService::GetLocaleLanguage(nsresult *aError)

    76 {

    77   nsresult res = NS_OK;

    79   do {

    80     if (!mLocaleLanguage) {

    81       nsCOMPtr<nsILocaleService> localeService;

    82       localeService = do_GetService(NS_LOCALESERVICE_CONTRACTID);

    83       if (!localeService) {

    84         res = NS_ERROR_FAILURE;

    85         break;

    86       }

    88       nsCOMPtr<nsILocale> locale;

    89       res = localeService->GetApplicationLocale(getter_AddRefs(locale));

    90       if (NS_FAILED(res))

    91         break;

    93       nsAutoString loc;

    94       res = locale->GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), loc);

    95       if (NS_FAILED(res))

    96         break;

    98       ToLowerCase(loc); // use lowercase for all language atoms

    99       mLocaleLanguage = do_GetAtom(loc);

   100     }

   101   } while (0);

   103   if (aError)

   104     *aError = res;

   106   return mLocaleLanguage;

   107 }

   109 nsIAtom*

   110 nsLanguageAtomService::GetLanguageGroup(nsIAtom *aLanguage,

   111                                         nsresult *aError)

   112 {

   113   nsIAtom *retVal;

   114   nsresult res = NS_OK;

   116   retVal = mLangToGroup.GetWeak(aLanguage);

   118   if (!retVal) {

   119     if (!mLangGroups) {

   120       if (NS_FAILED(InitLangGroupTable())) {

   121         if (aError) {

   122           *aError = NS_ERROR_FAILURE;

   123         }

   124         return nullptr;

   125       }

   126     }

   128     nsString langStr;

   129     aLanguage->ToString(langStr);

   131     nsXPIDLString langGroupStr;

   132     res = mLangGroups->GetStringFromName(langStr.get(),

   133                                          getter_Copies(langGroupStr));

   134     if (NS_FAILED(res)) {

   135       int32_t hyphen = langStr.FindChar('-');

   136       if (hyphen >= 0) {

   137         nsAutoString truncated(langStr);

   138         truncated.Truncate(hyphen);

   139         res = mLangGroups->GetStringFromName(truncated.get(),

   140                                              getter_Copies(langGroupStr));

   141         if (NS_FAILED(res)) {

   142           langGroupStr.AssignLiteral("x-unicode");

   143         }

   144       } else {

   145         langGroupStr.AssignLiteral("x-unicode");

   146       }

   147     }

   149     nsCOMPtr<nsIAtom> langGroup = do_GetAtom(langGroupStr);

   151     // The hashtable will keep an owning reference to the atom

   152     mLangToGroup.Put(aLanguage, langGroup);

   153     retVal = langGroup.get();

   154   }

   156   if (aError) {

   157     *aError = res;

   158   }

   160   return retVal;

   161 }

The Tor Browser / file revision