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