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comparison: dom/indexedDB/IDBFileHandle.cpp
dom/indexedDB/IDBFileHandle.cpp
- changeset 2
- 7e26c7da4463
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| -1:000000000000 | 0:ff952f61932a |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "IDBFileHandle.h" | |
| 8 | |
| 9 #include "mozilla/dom/file/File.h" | |
| 10 #include "mozilla/dom/IDBFileHandleBinding.h" | |
| 11 #include "mozilla/dom/quota/FileStreams.h" | |
| 12 | |
| 13 #include "IDBDatabase.h" | |
| 14 | |
| 15 USING_INDEXEDDB_NAMESPACE | |
| 16 USING_QUOTA_NAMESPACE | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 inline | |
| 21 already_AddRefed<nsIFile> | |
| 22 GetFileFor(FileInfo* aFileInfo) | |
| 23 | |
| 24 { | |
| 25 FileManager* fileManager = aFileInfo->Manager(); | |
| 26 nsCOMPtr<nsIFile> directory = fileManager->GetDirectory(); | |
| 27 NS_ENSURE_TRUE(directory, nullptr); | |
| 28 | |
| 29 nsCOMPtr<nsIFile> file = fileManager->GetFileForId(directory, | |
| 30 aFileInfo->Id()); | |
| 31 NS_ENSURE_TRUE(file, nullptr); | |
| 32 | |
| 33 return file.forget(); | |
| 34 } | |
| 35 | |
| 36 } // anonymous namespace | |
| 37 | |
| 38 IDBFileHandle::IDBFileHandle(IDBDatabase* aOwner) | |
| 39 : FileHandle(aOwner) | |
| 40 { | |
| 41 } | |
| 42 | |
| 43 // static | |
| 44 already_AddRefed<IDBFileHandle> | |
| 45 IDBFileHandle::Create(IDBDatabase* aDatabase, | |
| 46 const nsAString& aName, | |
| 47 const nsAString& aType, | |
| 48 already_AddRefed<FileInfo> aFileInfo) | |
| 49 { | |
| 50 NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); | |
| 51 | |
| 52 nsRefPtr<FileInfo> fileInfo(aFileInfo); | |
| 53 NS_ASSERTION(fileInfo, "Null pointer!"); | |
| 54 | |
| 55 nsRefPtr<IDBFileHandle> newFile = new IDBFileHandle(aDatabase); | |
| 56 | |
| 57 newFile->mFileStorage = aDatabase; | |
| 58 newFile->mName = aName; | |
| 59 newFile->mType = aType; | |
| 60 | |
| 61 newFile->mFile = GetFileFor(fileInfo); | |
| 62 NS_ENSURE_TRUE(newFile->mFile, nullptr); | |
| 63 newFile->mFileName.AppendInt(fileInfo->Id()); | |
| 64 | |
| 65 fileInfo.swap(newFile->mFileInfo); | |
| 66 | |
| 67 return newFile.forget(); | |
| 68 } | |
| 69 | |
| 70 already_AddRefed<nsISupports> | |
| 71 IDBFileHandle::CreateStream(nsIFile* aFile, bool aReadOnly) | |
| 72 { | |
| 73 nsCOMPtr<nsIOfflineStorage> storage = do_QueryInterface(mFileStorage); | |
| 74 NS_ASSERTION(storage, "This should always succeed!"); | |
| 75 | |
| 76 PersistenceType persistenceType = storage->Type(); | |
| 77 const nsACString& group = storage->Group(); | |
| 78 const nsACString& origin = storage->Origin(); | |
| 79 | |
| 80 nsCOMPtr<nsISupports> result; | |
| 81 | |
| 82 if (aReadOnly) { | |
| 83 nsRefPtr<FileInputStream> stream = | |
| 84 FileInputStream::Create(persistenceType, group, origin, aFile, -1, -1, | |
| 85 nsIFileInputStream::DEFER_OPEN); | |
| 86 result = NS_ISUPPORTS_CAST(nsIFileInputStream*, stream); | |
| 87 } | |
| 88 else { | |
| 89 nsRefPtr<FileStream> stream = | |
| 90 FileStream::Create(persistenceType, group, origin, aFile, -1, -1, | |
| 91 nsIFileStream::DEFER_OPEN); | |
| 92 result = NS_ISUPPORTS_CAST(nsIFileStream*, stream); | |
| 93 } | |
| 94 NS_ENSURE_TRUE(result, nullptr); | |
| 95 | |
| 96 return result.forget(); | |
| 97 } | |
| 98 | |
| 99 already_AddRefed<nsIDOMFile> | |
| 100 IDBFileHandle::CreateFileObject(mozilla::dom::file::LockedFile* aLockedFile, | |
| 101 uint32_t aFileSize) | |
| 102 { | |
| 103 nsCOMPtr<nsIDOMFile> file = new mozilla::dom::file::File( | |
| 104 mName, mType, aFileSize, mFile, aLockedFile, mFileInfo); | |
| 105 | |
| 106 return file.forget(); | |
| 107 } | |
| 108 | |
| 109 // virtual | |
| 110 JSObject* | |
| 111 IDBFileHandle::WrapObject(JSContext* aCx) | |
| 112 { | |
| 113 return IDBFileHandleBinding::Wrap(aCx, this); | |
| 114 } | |
| 115 | |
| 116 IDBDatabase* | |
| 117 IDBFileHandle::Database() | |
| 118 { | |
| 119 NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); | |
| 120 | |
| 121 IDBDatabase* database = static_cast<IDBDatabase*>(mFileStorage.get()); | |
| 122 MOZ_ASSERT(database); | |
| 123 | |
| 124 return database; | |
| 125 } |
