diff options
Diffstat (limited to 'comm/mailnews/intl/nsCharsetConverterManager.cpp')
| -rw-r--r-- | comm/mailnews/intl/nsCharsetConverterManager.cpp | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/comm/mailnews/intl/nsCharsetConverterManager.cpp b/comm/mailnews/intl/nsCharsetConverterManager.cpp new file mode 100644 index 0000000000..a15917206e --- /dev/null +++ b/comm/mailnews/intl/nsCharsetConverterManager.cpp @@ -0,0 +1,184 @@ +/* -*- 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 "nsCOMPtr.h" +#include "nsString.h" +#include "nsUnicharUtils.h" +#include "nsCharsetAlias.h" +#include "nsICharsetConverterManager.h" +#include "nsIStringBundle.h" +#include "nsTArray.h" +#include "mozilla/Components.h" + +#include "nsComponentManagerUtils.h" +#include "nsServiceManagerUtils.h" +#include "../base/src/nsMsgI18N.h" + +// just for CONTRACTIDs +#include "nsCharsetConverterManager.h" + +static nsCOMPtr<nsIStringBundle> sDataBundle; +static nsCOMPtr<nsIStringBundle> sTitleBundle; + +// Class nsCharsetConverterManager [implementation] + +NS_IMPL_ISUPPORTS(nsCharsetConverterManager, nsICharsetConverterManager) + +nsCharsetConverterManager::nsCharsetConverterManager() {} + +nsCharsetConverterManager::~nsCharsetConverterManager() { + sDataBundle = nullptr; + sTitleBundle = nullptr; +} + +static nsresult LoadBundle(const char* aBundleURLSpec, + nsIStringBundle** aResult) { + nsCOMPtr<nsIStringBundleService> sbServ = + mozilla::components::StringBundle::Service(); + if (!sbServ) return NS_ERROR_FAILURE; + + return sbServ->CreateBundle(aBundleURLSpec, aResult); +} + +static nsresult GetBundleValueInner(nsIStringBundle* aBundle, const char* aName, + const nsString& aProp, nsAString& aResult) { + nsAutoString key; + + CopyASCIItoUTF16(mozilla::MakeStringSpan(aName), key); + ToLowerCase(key); // we lowercase the main comparison key + key.Append(aProp); + + return aBundle->GetStringFromName(NS_ConvertUTF16toUTF8(key).get(), aResult); +} + +static nsresult GetBundleValue(nsIStringBundle* aBundle, const char* aName, + const nsString& aProp, nsAString& aResult) { + nsresult rv = NS_OK; + + nsAutoString value; + rv = GetBundleValueInner(aBundle, aName, aProp, value); + if (NS_FAILED(rv)) return rv; + + aResult = value; + + return NS_OK; +} + +static nsresult GetCharsetDataImpl(const char* aCharset, const char16_t* aProp, + nsAString& aResult) { + NS_ENSURE_ARG_POINTER(aCharset); + // aProp can be nullptr + + if (!sDataBundle) { + nsresult rv = LoadBundle("resource://gre-resources/charsetData.properties", + getter_AddRefs(sDataBundle)); + if (NS_FAILED(rv)) return rv; + } + + return GetBundleValue(sDataBundle, aCharset, nsDependentString(aProp), + aResult); +} + +// static +bool nsCharsetConverterManager::IsInternal(const nsACString& aCharset) { + nsAutoString str; + // fully qualify to possibly avoid vtable call + nsresult rv = GetCharsetDataImpl(PromiseFlatCString(aCharset).get(), + u".isInternal", str); + + return NS_SUCCEEDED(rv); +} + +//----------------------------------------------------------------------------//---------------------------------------------------------------------------- +// Interface nsICharsetConverterManager [implementation] + +// XXX Improve the implementation of this method. Right now, it is build on +// top of the nsCharsetAlias service. We can make the nsCharsetAlias +// better, with its own hash table (not the StringBundle anymore) and +// a nicer file format. +NS_IMETHODIMP +nsCharsetConverterManager::GetCharsetAlias(const char* aCharset, + nsACString& aResult) { + NS_ENSURE_ARG_POINTER(aCharset); + + // We try to obtain the preferred name for this charset from the charset + // aliases. + nsresult rv; + + rv = nsCharsetAlias::GetPreferred(nsDependentCString(aCharset), aResult); + NS_ENSURE_SUCCESS(rv, rv); + + return NS_OK; +} + +NS_IMETHODIMP +nsCharsetConverterManager::GetCharsetTitle(const char* aCharset, + nsAString& aResult) { + NS_ENSURE_ARG_POINTER(aCharset); + + if (!sTitleBundle) { + nsresult rv = + LoadBundle("chrome://messenger/locale/charsetTitles.properties", + getter_AddRefs(sTitleBundle)); + NS_ENSURE_SUCCESS(rv, rv); + } + + return GetBundleValue(sTitleBundle, aCharset, u".title"_ns, aResult); +} + +NS_IMETHODIMP +nsCharsetConverterManager::GetCharsetData(const char* aCharset, + const char16_t* aProp, + nsAString& aResult) { + return GetCharsetDataImpl(aCharset, aProp, aResult); +} + +NS_IMETHODIMP +nsCharsetConverterManager::GetCharsetLangGroup(const char* aCharset, + nsACString& aResult) { + // resolve the charset first + nsAutoCString charset; + + nsresult rv = GetCharsetAlias(aCharset, charset); + NS_ENSURE_SUCCESS(rv, rv); + + // fully qualify to possibly avoid vtable call + return nsCharsetConverterManager::GetCharsetLangGroupRaw(charset.get(), + aResult); +} + +NS_IMETHODIMP +nsCharsetConverterManager::GetCharsetLangGroupRaw(const char* aCharset, + nsACString& aResult) { + nsAutoString langGroup; + // fully qualify to possibly avoid vtable call + nsresult rv = nsCharsetConverterManager::GetCharsetData( + aCharset, u".LangGroup", langGroup); + + if (NS_SUCCEEDED(rv)) { + ToLowerCase(langGroup); // use lowercase for all language groups + aResult = NS_ConvertUTF16toUTF8(langGroup); + } + + return rv; +} + +NS_IMETHODIMP +nsCharsetConverterManager::Utf7ToUnicode(const nsACString& aSrc, + nsAString& aDest) { + return CopyUTF7toUTF16(aSrc, aDest); +} + +NS_IMETHODIMP +nsCharsetConverterManager::Mutf7ToUnicode(const nsACString& aSrc, + nsAString& aDest) { + return CopyMUTF7toUTF16(aSrc, aDest); +} + +NS_IMETHODIMP +nsCharsetConverterManager::UnicodeToMutf7(const nsAString& aSrc, + nsACString& aDest) { + return CopyUTF16toMUTF7(aSrc, aDest); +} |