dom/indexedDB/IDBFileHandle.cpp@6474c204b198 (annotated)
dom/indexedDB/IDBFileHandle.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 5 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #include "IDBFileHandle.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #include "mozilla/dom/file/File.h" |
| michael@0 | 10 | #include "mozilla/dom/IDBFileHandleBinding.h" |
| michael@0 | 11 | #include "mozilla/dom/quota/FileStreams.h" |
| michael@0 | 12 | |
| michael@0 | 13 | #include "IDBDatabase.h" |
| michael@0 | 14 | |
| michael@0 | 15 | USING_INDEXEDDB_NAMESPACE |
| michael@0 | 16 | USING_QUOTA_NAMESPACE |
| michael@0 | 17 | |
| michael@0 | 18 | namespace { |
| michael@0 | 19 | |
| michael@0 | 20 | inline |
| michael@0 | 21 | already_AddRefed<nsIFile> |
| michael@0 | 22 | GetFileFor(FileInfo* aFileInfo) |
| michael@0 | 23 | |
| michael@0 | 24 | { |
| michael@0 | 25 | FileManager* fileManager = aFileInfo->Manager(); |
| michael@0 | 26 | nsCOMPtr<nsIFile> directory = fileManager->GetDirectory(); |
| michael@0 | 27 | NS_ENSURE_TRUE(directory, nullptr); |
| michael@0 | 28 | |
| michael@0 | 29 | nsCOMPtr<nsIFile> file = fileManager->GetFileForId(directory, |
| michael@0 | 30 | aFileInfo->Id()); |
| michael@0 | 31 | NS_ENSURE_TRUE(file, nullptr); |
| michael@0 | 32 | |
| michael@0 | 33 | return file.forget(); |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | } // anonymous namespace |
| michael@0 | 37 | |
| michael@0 | 38 | IDBFileHandle::IDBFileHandle(IDBDatabase* aOwner) |
| michael@0 | 39 | : FileHandle(aOwner) |
| michael@0 | 40 | { |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | // static |
| michael@0 | 44 | already_AddRefed<IDBFileHandle> |
| michael@0 | 45 | IDBFileHandle::Create(IDBDatabase* aDatabase, |
| michael@0 | 46 | const nsAString& aName, |
| michael@0 | 47 | const nsAString& aType, |
| michael@0 | 48 | already_AddRefed<FileInfo> aFileInfo) |
| michael@0 | 49 | { |
| michael@0 | 50 | NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); |
| michael@0 | 51 | |
| michael@0 | 52 | nsRefPtr<FileInfo> fileInfo(aFileInfo); |
| michael@0 | 53 | NS_ASSERTION(fileInfo, "Null pointer!"); |
| michael@0 | 54 | |
| michael@0 | 55 | nsRefPtr<IDBFileHandle> newFile = new IDBFileHandle(aDatabase); |
| michael@0 | 56 | |
| michael@0 | 57 | newFile->mFileStorage = aDatabase; |
| michael@0 | 58 | newFile->mName = aName; |
| michael@0 | 59 | newFile->mType = aType; |
| michael@0 | 60 | |
| michael@0 | 61 | newFile->mFile = GetFileFor(fileInfo); |
| michael@0 | 62 | NS_ENSURE_TRUE(newFile->mFile, nullptr); |
| michael@0 | 63 | newFile->mFileName.AppendInt(fileInfo->Id()); |
| michael@0 | 64 | |
| michael@0 | 65 | fileInfo.swap(newFile->mFileInfo); |
| michael@0 | 66 | |
| michael@0 | 67 | return newFile.forget(); |
| michael@0 | 68 | } |
| michael@0 | 69 | |
| michael@0 | 70 | already_AddRefed<nsISupports> |
| michael@0 | 71 | IDBFileHandle::CreateStream(nsIFile* aFile, bool aReadOnly) |
| michael@0 | 72 | { |
| michael@0 | 73 | nsCOMPtr<nsIOfflineStorage> storage = do_QueryInterface(mFileStorage); |
| michael@0 | 74 | NS_ASSERTION(storage, "This should always succeed!"); |
| michael@0 | 75 | |
| michael@0 | 76 | PersistenceType persistenceType = storage->Type(); |
| michael@0 | 77 | const nsACString& group = storage->Group(); |
| michael@0 | 78 | const nsACString& origin = storage->Origin(); |
| michael@0 | 79 | |
| michael@0 | 80 | nsCOMPtr<nsISupports> result; |
| michael@0 | 81 | |
| michael@0 | 82 | if (aReadOnly) { |
| michael@0 | 83 | nsRefPtr<FileInputStream> stream = |
| michael@0 | 84 | FileInputStream::Create(persistenceType, group, origin, aFile, -1, -1, |
| michael@0 | 85 | nsIFileInputStream::DEFER_OPEN); |
| michael@0 | 86 | result = NS_ISUPPORTS_CAST(nsIFileInputStream*, stream); |
| michael@0 | 87 | } |
| michael@0 | 88 | else { |
| michael@0 | 89 | nsRefPtr<FileStream> stream = |
| michael@0 | 90 | FileStream::Create(persistenceType, group, origin, aFile, -1, -1, |
| michael@0 | 91 | nsIFileStream::DEFER_OPEN); |
| michael@0 | 92 | result = NS_ISUPPORTS_CAST(nsIFileStream*, stream); |
| michael@0 | 93 | } |
| michael@0 | 94 | NS_ENSURE_TRUE(result, nullptr); |
| michael@0 | 95 | |
| michael@0 | 96 | return result.forget(); |
| michael@0 | 97 | } |
| michael@0 | 98 | |
| michael@0 | 99 | already_AddRefed<nsIDOMFile> |
| michael@0 | 100 | IDBFileHandle::CreateFileObject(mozilla::dom::file::LockedFile* aLockedFile, |
| michael@0 | 101 | uint32_t aFileSize) |
| michael@0 | 102 | { |
| michael@0 | 103 | nsCOMPtr<nsIDOMFile> file = new mozilla::dom::file::File( |
| michael@0 | 104 | mName, mType, aFileSize, mFile, aLockedFile, mFileInfo); |
| michael@0 | 105 | |
| michael@0 | 106 | return file.forget(); |
| michael@0 | 107 | } |
| michael@0 | 108 | |
| michael@0 | 109 | // virtual |
| michael@0 | 110 | JSObject* |
| michael@0 | 111 | IDBFileHandle::WrapObject(JSContext* aCx) |
| michael@0 | 112 | { |
| michael@0 | 113 | return IDBFileHandleBinding::Wrap(aCx, this); |
| michael@0 | 114 | } |
| michael@0 | 115 | |
| michael@0 | 116 | IDBDatabase* |
| michael@0 | 117 | IDBFileHandle::Database() |
| michael@0 | 118 | { |
| michael@0 | 119 | NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); |
| michael@0 | 120 | |
| michael@0 | 121 | IDBDatabase* database = static_cast<IDBDatabase*>(mFileStorage.get()); |
| michael@0 | 122 | MOZ_ASSERT(database); |
| michael@0 | 123 | |
| michael@0 | 124 | return database; |
| michael@0 | 125 | } |
