124 lines
3.3 KiB
C++
124 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsLanguageAtomService.h"
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#include "nsILocaleService.h"
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#include "nsUConvPropertySearch.h"
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#include "nsUnicharUtils.h"
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#include "nsIAtom.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Services.h"
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#include "nsServiceManagerUtils.h"
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#include "mozilla/dom/EncodingUtils.h"
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using namespace mozilla;
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static const nsUConvProp kLangGroups[] = {
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#include "langGroups.properties.h"
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};
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NS_IMPL_ISUPPORTS(nsLanguageAtomService, nsILanguageAtomService)
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nsLanguageAtomService::nsLanguageAtomService()
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{
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}
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nsIAtom*
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nsLanguageAtomService::LookupLanguage(const nsACString &aLanguage,
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nsresult *aError)
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{
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nsAutoCString lowered(aLanguage);
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ToLowerCase(lowered);
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nsCOMPtr<nsIAtom> lang = NS_Atomize(lowered);
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return GetLanguageGroup(lang, aError);
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}
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already_AddRefed<nsIAtom>
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nsLanguageAtomService::LookupCharSet(const nsACString& aCharSet)
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{
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nsAutoCString group;
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mozilla::dom::EncodingUtils::LangGroupForEncoding(aCharSet, group);
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return NS_Atomize(group);
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}
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nsIAtom*
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nsLanguageAtomService::GetLocaleLanguage(nsresult *aError)
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{
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nsresult res = NS_OK;
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do {
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if (!mLocaleLanguage) {
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nsCOMPtr<nsILocaleService> localeService;
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localeService = do_GetService(NS_LOCALESERVICE_CONTRACTID);
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if (!localeService) {
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res = NS_ERROR_FAILURE;
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break;
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}
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nsCOMPtr<nsILocale> locale;
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res = localeService->GetApplicationLocale(getter_AddRefs(locale));
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if (NS_FAILED(res))
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break;
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nsAutoString loc;
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res = locale->GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), loc);
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if (NS_FAILED(res))
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break;
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ToLowerCase(loc); // use lowercase for all language atoms
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mLocaleLanguage = NS_Atomize(loc);
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}
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} while (0);
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if (aError)
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*aError = res;
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return mLocaleLanguage;
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}
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nsIAtom*
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nsLanguageAtomService::GetLanguageGroup(nsIAtom *aLanguage,
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nsresult *aError)
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{
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nsIAtom *retVal;
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nsresult res = NS_OK;
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retVal = mLangToGroup.GetWeak(aLanguage);
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if (!retVal) {
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nsAutoCString langStr;
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aLanguage->ToUTF8String(langStr);
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nsAutoCString langGroupStr;
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res = nsUConvPropertySearch::SearchPropertyValue(kLangGroups,
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ArrayLength(kLangGroups),
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langStr, langGroupStr);
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while (NS_FAILED(res)) {
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int32_t hyphen = langStr.RFindChar('-');
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if (hyphen <= 0) {
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langGroupStr.AssignLiteral("x-unicode");
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break;
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}
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langStr.Truncate(hyphen);
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res = nsUConvPropertySearch::SearchPropertyValue(kLangGroups,
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ArrayLength(kLangGroups),
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langStr, langGroupStr);
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}
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nsCOMPtr<nsIAtom> langGroup = NS_Atomize(langGroupStr);
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// The hashtable will keep an owning reference to the atom
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mLangToGroup.Put(aLanguage, langGroup);
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retVal = langGroup.get();
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}
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if (aError) {
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*aError = res;
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}
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return retVal;
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}
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