зеркало из https://github.com/mozilla/gecko-dev.git
582 строки
16 KiB
C++
582 строки
16 KiB
C++
/******* BEGIN LICENSE BLOCK *******
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Initial Developers of the Original Code are Kevin Hendricks (MySpell)
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* and László Németh (Hunspell). Portions created by the Initial Developers
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* are Copyright (C) 2002-2005 the Initial Developers. All Rights Reserved.
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*
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* Contributor(s): Kevin Hendricks (kevin.hendricks@sympatico.ca)
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* David Einstein (deinst@world.std.com)
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* Michiel van Leeuwen (mvl@exedo.nl)
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* Caolan McNamara (cmc@openoffice.org)
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* László Németh (nemethl@gyorsposta.hu)
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* Davide Prina
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* Giuseppe Modugno
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* Gianluca Turconi
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* Simon Brouwer
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* Noll Janos
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* Biro Arpad
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* Goldman Eleonora
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* Sarlos Tamas
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* Bencsath Boldizsar
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* Halacsy Peter
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* Dvornik Laszlo
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* Gefferth Andras
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* Nagy Viktor
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* Varga Daniel
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* Chris Halls
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* Rene Engelhard
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* Bram Moolenaar
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* Dafydd Jones
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* Harri Pitkanen
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* Andras Timar
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* Tor Lillqvist
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* Jesper Kristensen (mail@jesperkristensen.dk)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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******* END LICENSE BLOCK *******/
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#include "mozHunspell.h"
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#include "nsReadableUtils.h"
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#include "nsString.h"
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#include "nsIObserverService.h"
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#include "nsISimpleEnumerator.h"
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#include "nsIDirectoryEnumerator.h"
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#include "nsIFile.h"
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#include "nsUnicharUtils.h"
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#include "nsCRT.h"
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#include "mozInlineSpellChecker.h"
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#include <stdlib.h>
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#include "nsIPrefService.h"
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#include "nsIPrefBranch.h"
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#include "nsNetUtil.h"
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#include "mozilla/dom/ContentParent.h"
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using mozilla::dom::ContentParent;
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using namespace mozilla;
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NS_IMPL_CYCLE_COLLECTING_ADDREF(mozHunspell)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(mozHunspell)
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NS_INTERFACE_MAP_BEGIN(mozHunspell)
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NS_INTERFACE_MAP_ENTRY(mozISpellCheckingEngine)
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NS_INTERFACE_MAP_ENTRY(nsIObserver)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_ENTRY(nsIMemoryReporter)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, mozISpellCheckingEngine)
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NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(mozHunspell)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION(mozHunspell, mPersonalDictionary)
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template<> mozilla::CountingAllocatorBase<HunspellAllocator>::AmountType
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mozilla::CountingAllocatorBase<HunspellAllocator>::sAmount(0);
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mozHunspell::mozHunspell()
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: mHunspell(nullptr)
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{
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#ifdef DEBUG
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// There must be only one instance of this class: it reports memory based on
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// a single static count in HunspellAllocator.
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static bool hasRun = false;
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MOZ_ASSERT(!hasRun);
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hasRun = true;
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#endif
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}
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nsresult
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mozHunspell::Init()
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{
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LoadDictionaryList(false);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->AddObserver(this, "profile-do-change", true);
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obs->AddObserver(this, "profile-after-change", true);
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}
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mozilla::RegisterWeakMemoryReporter(this);
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return NS_OK;
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}
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mozHunspell::~mozHunspell()
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{
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mozilla::UnregisterWeakMemoryReporter(this);
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mPersonalDictionary = nullptr;
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delete mHunspell;
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}
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NS_IMETHODIMP
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mozHunspell::GetDictionary(nsAString& aDictionary)
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{
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aDictionary = mDictionary;
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return NS_OK;
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}
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/* set the Dictionary.
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* This also Loads the dictionary and initializes the converter using the dictionaries converter
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*/
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NS_IMETHODIMP
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mozHunspell::SetDictionary(const nsAString& aDictionary)
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{
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if (aDictionary.IsEmpty()) {
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delete mHunspell;
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mHunspell = nullptr;
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mDictionary.Truncate();
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mAffixFileName.Truncate();
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mDecoder = nullptr;
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mEncoder = nullptr;
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return NS_OK;
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}
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nsIURI* affFile = mDictionaries.GetWeak(aDictionary);
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if (!affFile) {
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return NS_ERROR_FILE_NOT_FOUND;
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}
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nsAutoCString dictFileName, affFileName;
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nsresult rv = affFile->GetSpec(affFileName);
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NS_ENSURE_SUCCESS(rv, rv);
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if (mAffixFileName.Equals(affFileName)) {
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return NS_OK;
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}
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dictFileName = affFileName;
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int32_t dotPos = dictFileName.RFindChar('.');
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if (dotPos == -1)
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return NS_ERROR_FAILURE;
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dictFileName.SetLength(dotPos);
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dictFileName.AppendLiteral(".dic");
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// SetDictionary can be called multiple times, so we might have a
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// valid mHunspell instance which needs cleaned up.
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delete mHunspell;
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mDictionary = aDictionary;
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mAffixFileName = affFileName;
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mHunspell = new Hunspell(affFileName.get(),
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dictFileName.get());
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if (!mHunspell)
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return NS_ERROR_OUT_OF_MEMORY;
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auto encoding =
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Encoding::ForLabelNoReplacement(mHunspell->get_dict_encoding());
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if (!encoding) {
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return NS_ERROR_UCONV_NOCONV;
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}
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mEncoder = encoding->NewEncoder();
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mDecoder = encoding->NewDecoderWithoutBOMHandling();
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return NS_OK;
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}
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NS_IMETHODIMP mozHunspell::GetPersonalDictionary(mozIPersonalDictionary * *aPersonalDictionary)
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{
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*aPersonalDictionary = mPersonalDictionary;
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NS_IF_ADDREF(*aPersonalDictionary);
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return NS_OK;
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}
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NS_IMETHODIMP mozHunspell::SetPersonalDictionary(mozIPersonalDictionary * aPersonalDictionary)
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{
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mPersonalDictionary = aPersonalDictionary;
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return NS_OK;
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}
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NS_IMETHODIMP mozHunspell::GetDictionaryList(char16_t ***aDictionaries,
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uint32_t *aCount)
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{
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if (!aDictionaries || !aCount)
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return NS_ERROR_NULL_POINTER;
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uint32_t count = 0;
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char16_t** dicts =
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(char16_t**) moz_xmalloc(sizeof(char16_t*) * mDictionaries.Count());
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for (auto iter = mDictionaries.Iter(); !iter.Done(); iter.Next()) {
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dicts[count] = ToNewUnicode(iter.Key());
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if (!dicts[count]) {
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while (count) {
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--count;
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free(dicts[count]);
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}
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free(dicts);
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return NS_ERROR_OUT_OF_MEMORY;
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}
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++count;
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}
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*aDictionaries = dicts;
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*aCount = count;
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return NS_OK;
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}
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void
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mozHunspell::LoadDictionaryList(bool aNotifyChildProcesses)
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{
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mDictionaries.Clear();
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nsresult rv;
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// find built in dictionaries, or dictionaries specified in
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// spellchecker.dictionary_path in prefs
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nsCOMPtr<nsIFile> dictDir;
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// check preferences first
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nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID));
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if (prefs) {
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nsAutoCString extDictPath;
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rv = prefs->GetCharPref("spellchecker.dictionary_path", extDictPath);
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if (NS_SUCCEEDED(rv)) {
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// set the spellchecker.dictionary_path
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rv = NS_NewNativeLocalFile(extDictPath, true, getter_AddRefs(dictDir));
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}
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if (dictDir) {
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LoadDictionariesFromDir(dictDir);
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}
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}
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// find dictionaries in DICPATH
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char* dicEnv = PR_GetEnv("DICPATH");
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if (dicEnv) {
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// do a two-pass dance so dictionaries are loaded right-to-left as preference
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nsTArray<nsCOMPtr<nsIFile>> dirs;
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nsAutoCString env(dicEnv); // assume dicEnv is UTF-8
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char* currPath = nullptr;
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char* nextPaths = env.BeginWriting();
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while ((currPath = NS_strtok(":", &nextPaths))) {
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nsCOMPtr<nsIFile> dir;
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rv = NS_NewNativeLocalFile(nsCString(currPath), true, getter_AddRefs(dir));
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if (NS_SUCCEEDED(rv)) {
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dirs.AppendElement(dir);
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}
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}
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// load them in reverse order so they override each other properly
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for (int32_t i = dirs.Length() - 1; i >= 0; i--) {
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LoadDictionariesFromDir(dirs[i]);
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}
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}
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// find dictionaries from restartless extensions
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for (int32_t i = 0; i < mDynamicDirectories.Count(); i++) {
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LoadDictionariesFromDir(mDynamicDirectories[i]);
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}
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for (auto iter = mDynamicDictionaries.Iter(); !iter.Done(); iter.Next()) {
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mDictionaries.Put(iter.Key(), iter.Data());
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}
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DictionariesChanged(aNotifyChildProcesses);
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}
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void
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mozHunspell::DictionariesChanged(bool aNotifyChildProcesses)
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{
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// Now we have finished updating the list of dictionaries, update the current
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// dictionary and any editors which may use it.
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mozInlineSpellChecker::UpdateCanEnableInlineSpellChecking();
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if (aNotifyChildProcesses) {
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ContentParent::NotifyUpdatedDictionaries();
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}
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// Check if the current dictionary is still available.
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// If not, try to replace it with another dictionary of the same language.
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if (!mDictionary.IsEmpty()) {
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nsresult rv = SetDictionary(mDictionary);
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if (NS_SUCCEEDED(rv))
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return;
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}
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// If the current dictionary has gone, and we don't have a good replacement,
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// set no current dictionary.
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if (!mDictionary.IsEmpty()) {
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SetDictionary(EmptyString());
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}
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}
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NS_IMETHODIMP
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mozHunspell::LoadDictionariesFromDir(nsIFile* aDir)
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{
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nsresult rv;
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bool check = false;
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rv = aDir->Exists(&check);
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if (NS_FAILED(rv) || !check)
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return NS_ERROR_UNEXPECTED;
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rv = aDir->IsDirectory(&check);
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if (NS_FAILED(rv) || !check)
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return NS_ERROR_UNEXPECTED;
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nsCOMPtr<nsIDirectoryEnumerator> files;
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rv = aDir->GetDirectoryEntries(getter_AddRefs(files));
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if (NS_FAILED(rv))
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return NS_ERROR_UNEXPECTED;
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nsCOMPtr<nsIFile> file;
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while (NS_SUCCEEDED(files->GetNextFile(getter_AddRefs(file))) && file) {
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nsAutoString leafName;
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file->GetLeafName(leafName);
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if (!StringEndsWith(leafName, NS_LITERAL_STRING(".dic")))
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continue;
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nsAutoString dict(leafName);
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dict.SetLength(dict.Length() - 4); // magic length of ".dic"
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// check for the presence of the .aff file
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leafName = dict;
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leafName.AppendLiteral(".aff");
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file->SetLeafName(leafName);
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rv = file->Exists(&check);
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if (NS_FAILED(rv) || !check)
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continue;
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#ifdef DEBUG_bsmedberg
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printf("Adding dictionary: %s\n", NS_ConvertUTF16toUTF8(dict).get());
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#endif
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// Replace '_' separator with '-'
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dict.ReplaceChar("_", '-');
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nsCOMPtr<nsIURI> uri;
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rv = NS_NewFileURI(getter_AddRefs(uri), file);
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NS_ENSURE_SUCCESS(rv, rv);
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mDictionaries.Put(dict, uri);
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}
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return NS_OK;
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}
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nsresult
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mozHunspell::ConvertCharset(const nsAString& aStr, std::string& aDst)
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{
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if (NS_WARN_IF(!mEncoder)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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auto src = MakeSpan(aStr.BeginReading(), aStr.Length());
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CheckedInt<size_t> needed =
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mEncoder->MaxBufferLengthFromUTF16WithoutReplacement(src.Length());
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if (!needed.isValid()) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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aDst.resize(needed.value());
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char* dstPtr = &aDst[0];
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auto dst = MakeSpan(reinterpret_cast<uint8_t*>(dstPtr), needed.value());
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uint32_t result;
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size_t read;
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size_t written;
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Tie(result, read, written) =
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mEncoder->EncodeFromUTF16WithoutReplacement(src, dst, true);
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Unused << read;
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MOZ_ASSERT(result != kOutputFull);
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if (result != kInputEmpty) {
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return NS_ERROR_UENC_NOMAPPING;
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}
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aDst.resize(written);
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mEncoder->Encoding()->NewEncoderInto(*mEncoder);
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return NS_OK;
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}
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NS_IMETHODIMP
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mozHunspell::CollectReports(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData, bool aAnonymize)
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{
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MOZ_COLLECT_REPORT(
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"explicit/spell-check", KIND_HEAP, UNITS_BYTES,
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HunspellAllocator::MemoryAllocated(),
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"Memory used by the spell-checking engine.");
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return NS_OK;
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}
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NS_IMETHODIMP
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mozHunspell::Check(const nsAString& aWord, bool* aResult)
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{
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if (NS_WARN_IF(!aResult)) {
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return NS_ERROR_INVALID_ARG;
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}
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NS_ENSURE_TRUE(mHunspell, NS_ERROR_FAILURE);
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std::string charsetWord;
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nsresult rv = ConvertCharset(aWord, charsetWord);
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NS_ENSURE_SUCCESS(rv, rv);
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*aResult = mHunspell->spell(charsetWord);
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if (!*aResult && mPersonalDictionary)
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rv = mPersonalDictionary->Check(aWord, aResult);
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return rv;
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}
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NS_IMETHODIMP
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mozHunspell::Suggest(const nsAString& aWord, char16_t*** aSuggestions,
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uint32_t* aSuggestionCount)
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{
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if (NS_WARN_IF(!aSuggestions)) {
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return NS_ERROR_INVALID_ARG;
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}
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if (NS_WARN_IF(!aSuggestionCount)) {
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return NS_ERROR_INVALID_ARG;
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}
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NS_ENSURE_TRUE(mHunspell, NS_ERROR_FAILURE);
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nsresult rv;
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*aSuggestionCount = 0;
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std::string charsetWord;
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rv = ConvertCharset(aWord, charsetWord);
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NS_ENSURE_SUCCESS(rv, rv);
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std::vector<std::string> suggestions = mHunspell->suggest(charsetWord);
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*aSuggestionCount = static_cast<uint32_t>(suggestions.size());
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if (*aSuggestionCount) {
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*aSuggestions = (char16_t **)moz_xmalloc(*aSuggestionCount * sizeof(char16_t *));
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uint32_t index = 0;
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for (index = 0; index < *aSuggestionCount && NS_SUCCEEDED(rv); ++index) {
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// If the IDL used an array of AString, we could use
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// Encoding::DecodeWithoutBOMHandling() here.
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// Convert the suggestion to utf16
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Span<const char> charSrc(suggestions[index]);
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auto src = AsBytes(charSrc);
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CheckedInt<size_t> needed =
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mDecoder->MaxUTF16BufferLength(src.Length());
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if (!needed.isValid()) {
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rv = NS_ERROR_OUT_OF_MEMORY;
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break;
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}
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size_t dstLen = needed.value();
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needed += 1;
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needed *= sizeof(char16_t);
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if (!needed.isValid()) {
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rv = NS_ERROR_OUT_OF_MEMORY;
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break;
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}
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(*aSuggestions)[index] = (char16_t*)moz_xmalloc(needed.value());
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auto dst = MakeSpan((*aSuggestions)[index], dstLen);
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uint32_t result;
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size_t read;
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size_t written;
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bool hadErrors;
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Tie(result, read, written, hadErrors) =
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mDecoder->DecodeToUTF16(src, dst, true);
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MOZ_ASSERT(result == kInputEmpty);
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MOZ_ASSERT(read == src.Length());
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MOZ_ASSERT(written <= dstLen);
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Unused << hadErrors;
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(*aSuggestions)[index][written] = 0;
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mDecoder->Encoding()->NewDecoderWithoutBOMHandlingInto(*mDecoder);
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}
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if (NS_FAILED(rv))
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|
NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(index, *aSuggestions); // free the char16_t strings up to the point at which the error occurred
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
mozHunspell::Observe(nsISupports* aSubj, const char *aTopic,
|
|
const char16_t *aData)
|
|
{
|
|
NS_ASSERTION(!strcmp(aTopic, "profile-do-change")
|
|
|| !strcmp(aTopic, "profile-after-change"),
|
|
"Unexpected observer topic");
|
|
|
|
LoadDictionaryList(false);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP mozHunspell::AddDirectory(nsIFile *aDir)
|
|
{
|
|
mDynamicDirectories.AppendObject(aDir);
|
|
LoadDictionaryList(true);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP mozHunspell::RemoveDirectory(nsIFile *aDir)
|
|
{
|
|
mDynamicDirectories.RemoveObject(aDir);
|
|
LoadDictionaryList(true);
|
|
|
|
#ifdef MOZ_THUNDERBIRD
|
|
/*
|
|
* This notification is needed for Thunderbird. Thunderbird derives the dictionary
|
|
* from the document's "lang" attribute. If a dictionary is removed,
|
|
* we need to change the "lang" attribute.
|
|
*/
|
|
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
|
|
if (obs) {
|
|
obs->NotifyObservers(nullptr,
|
|
SPELLCHECK_DICTIONARY_REMOVE_NOTIFICATION,
|
|
nullptr);
|
|
}
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP mozHunspell::AddDictionary(const nsAString& aLang, nsIURI *aFile)
|
|
{
|
|
NS_ENSURE_TRUE(aFile, NS_ERROR_INVALID_ARG);
|
|
|
|
mDynamicDictionaries.Put(aLang, aFile);
|
|
mDictionaries.Put(aLang, aFile);
|
|
DictionariesChanged(true);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP mozHunspell::RemoveDictionary(const nsAString& aLang, nsIURI *aFile, bool* aRetVal)
|
|
{
|
|
NS_ENSURE_TRUE(aFile, NS_ERROR_INVALID_ARG);
|
|
*aRetVal = false;
|
|
|
|
nsCOMPtr<nsIURI> file = mDynamicDictionaries.Get(aLang);
|
|
bool equal;
|
|
if (file && NS_SUCCEEDED(file->Equals(aFile, &equal)) && equal) {
|
|
mDynamicDictionaries.Remove(aLang);
|
|
LoadDictionaryList(true);
|
|
*aRetVal = true;
|
|
}
|
|
return NS_OK;
|
|
}
|