зеркало из https://github.com/mozilla/pjs.git
305 строки
7.8 KiB
C++
305 строки
7.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* ***** 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 Original Code is Indexed Database.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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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 "FileManager.h"
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#include "mozIStorageConnection.h"
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#include "mozIStorageServiceQuotaManagement.h"
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#include "mozIStorageStatement.h"
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#include "nsISimpleEnumerator.h"
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#include "mozStorageCID.h"
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#include "mozStorageHelper.h"
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#include "nsContentUtils.h"
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#include "FileInfo.h"
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#include "IndexedDatabaseManager.h"
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USING_INDEXEDDB_NAMESPACE
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namespace {
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PLDHashOperator
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EnumerateToTArray(const PRUint64& aKey,
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FileInfo* aValue,
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void* aUserArg)
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{
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NS_ASSERTION(aValue, "Null pointer!");
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NS_ASSERTION(aUserArg, "Null pointer!");
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nsTArray<FileInfo*>* array =
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static_cast<nsTArray<FileInfo*>*>(aUserArg);
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array->AppendElement(aValue);
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return PL_DHASH_NEXT;
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}
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} // anonymous namespace
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nsresult
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FileManager::Init(nsIFile* aDirectory,
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mozIStorageConnection* aConnection)
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{
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NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
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NS_ENSURE_TRUE(mFileInfos.Init(), NS_ERROR_OUT_OF_MEMORY);
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bool exists;
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nsresult rv = aDirectory->Exists(&exists);
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NS_ENSURE_SUCCESS(rv, rv);
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if (exists) {
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bool isDirectory;
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rv = aDirectory->IsDirectory(&isDirectory);
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NS_ENSURE_SUCCESS(rv, rv);
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NS_ENSURE_TRUE(isDirectory, NS_ERROR_FAILURE);
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}
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else {
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rv = aDirectory->Create(nsIFile::DIRECTORY_TYPE, 0755);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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mozStorageTransaction transaction(aConnection, false);
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rv = aConnection->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"CREATE VIRTUAL TABLE fs USING filesystem;"
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));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<mozIStorageStatement> stmt;
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rv = aConnection->CreateStatement(NS_LITERAL_CSTRING(
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"SELECT name, (name IN (SELECT id FROM file)) FROM fs "
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"WHERE path = :path"
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), getter_AddRefs(stmt));
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NS_ENSURE_SUCCESS(rv, rv);
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nsString path;
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rv = aDirectory->GetPath(path);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = stmt->BindStringByName(NS_LITERAL_CSTRING("path"), path);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<mozIStorageServiceQuotaManagement> ss =
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do_GetService(MOZ_STORAGE_SERVICE_CONTRACTID);
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NS_ENSURE_TRUE(ss, NS_ERROR_FAILURE);
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bool hasResult;
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while (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
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nsString name;
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rv = stmt->GetString(0, name);
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NS_ENSURE_SUCCESS(rv, rv);
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PRInt32 flag = stmt->AsInt32(1);
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nsCOMPtr<nsIFile> file;
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rv = aDirectory->Clone(getter_AddRefs(file));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = file->Append(name);
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NS_ENSURE_SUCCESS(rv, rv);
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if (flag) {
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rv = ss->UpdateQuotaInformationForFile(file);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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else {
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rv = file->Remove(false);
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if (NS_FAILED(rv)) {
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NS_WARNING("Failed to remove orphaned file!");
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}
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}
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}
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rv = aConnection->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
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"DROP TABLE fs;"
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));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = aDirectory->GetPath(mDirectoryPath);
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NS_ENSURE_SUCCESS(rv, rv);
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transaction.Commit();
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return NS_OK;
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}
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nsresult
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FileManager::Load(mozIStorageConnection* aConnection)
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{
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NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
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nsCOMPtr<mozIStorageStatement> stmt;
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nsresult rv = aConnection->CreateStatement(NS_LITERAL_CSTRING(
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"SELECT id, refcount "
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"FROM file"
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), getter_AddRefs(stmt));
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NS_ENSURE_SUCCESS(rv, rv);
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bool hasResult;
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while (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
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PRInt64 id;
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rv = stmt->GetInt64(0, &id);
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NS_ENSURE_SUCCESS(rv, rv);
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PRInt32 refcount;
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rv = stmt->GetInt32(1, &refcount);
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NS_ENSURE_SUCCESS(rv, rv);
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NS_ASSERTION(refcount, "This shouldn't happen!");
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nsRefPtr<FileInfo> fileInfo = FileInfo::Create(this, id);
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fileInfo->mDBRefCnt = refcount;
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if (!mFileInfos.Put(id, fileInfo)) {
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NS_WARNING("Out of memory?");
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return NS_ERROR_OUT_OF_MEMORY;
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}
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mLastFileId = NS_MAX(id, mLastFileId);
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}
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mLoaded = true;
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return NS_OK;
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}
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nsresult
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FileManager::Invalidate()
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{
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if (IndexedDatabaseManager::IsClosed()) {
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NS_ERROR("Shouldn't be called after shutdown!");
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return NS_ERROR_UNEXPECTED;
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}
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nsTArray<FileInfo*> fileInfos;
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{
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MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
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NS_ASSERTION(!mInvalidated, "Invalidate more than once?!");
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mInvalidated = true;
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fileInfos.SetCapacity(mFileInfos.Count());
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mFileInfos.EnumerateRead(EnumerateToTArray, &fileInfos);
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}
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for (PRUint32 i = 0; i < fileInfos.Length(); i++) {
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FileInfo* fileInfo = fileInfos.ElementAt(i);
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fileInfo->ClearDBRefs();
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}
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return NS_OK;
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}
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already_AddRefed<nsIFile>
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FileManager::GetDirectory()
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{
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nsCOMPtr<nsILocalFile> directory =
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do_CreateInstance(NS_LOCAL_FILE_CONTRACTID);
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NS_ENSURE_TRUE(directory, nsnull);
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nsresult rv = directory->InitWithPath(mDirectoryPath);
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NS_ENSURE_SUCCESS(rv, nsnull);
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return directory.forget();
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}
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already_AddRefed<FileInfo>
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FileManager::GetFileInfo(PRInt64 aId)
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{
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if (IndexedDatabaseManager::IsClosed()) {
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NS_ERROR("Shouldn't be called after shutdown!");
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return nsnull;
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}
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FileInfo* fileInfo = nsnull;
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{
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MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
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fileInfo = mFileInfos.Get(aId);
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}
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nsRefPtr<FileInfo> result = fileInfo;
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return result.forget();
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}
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already_AddRefed<FileInfo>
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FileManager::GetNewFileInfo()
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{
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if (IndexedDatabaseManager::IsClosed()) {
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NS_ERROR("Shouldn't be called after shutdown!");
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return nsnull;
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}
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nsAutoPtr<FileInfo> fileInfo;
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{
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MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
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PRInt64 id = mLastFileId + 1;
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fileInfo = FileInfo::Create(this, id);
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if (!mFileInfos.Put(id, fileInfo)) {
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NS_WARNING("Out of memory?");
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return nsnull;
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}
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mLastFileId = id;
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}
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nsRefPtr<FileInfo> result = fileInfo.forget();
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return result.forget();
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}
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already_AddRefed<nsIFile>
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FileManager::GetFileForId(nsIFile* aDirectory, PRInt64 aId)
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{
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NS_ASSERTION(aDirectory, "Null pointer!");
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nsAutoString id;
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id.AppendInt(aId);
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nsCOMPtr<nsIFile> file;
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nsresult rv = aDirectory->Clone(getter_AddRefs(file));
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NS_ENSURE_SUCCESS(rv, nsnull);
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rv = file->Append(id);
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NS_ENSURE_SUCCESS(rv, nsnull);
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return file.forget();
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}
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