| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "DOMFileSystemSync.h" |
| |
| #include "AsyncFileSystem.h" |
| #include "AsyncFileWriter.h" |
| #include "DOMFilePath.h" |
| #include "DirectoryEntrySync.h" |
| #include "ErrorCallback.h" |
| #include "File.h" |
| #include "FileEntrySync.h" |
| #include "FileError.h" |
| #include "FileException.h" |
| #include "FileMetadata.h" |
| #include "FileSystemCallbacks.h" |
| #include "FileWriterBaseCallback.h" |
| #include "FileWriterSync.h" |
| |
| namespace WebCore { |
| |
| class FileWriterBase; |
| |
| PassRefPtr<DOMFileSystemSync> DOMFileSystemSync::create(DOMFileSystemBase* fileSystem) |
| { |
| return adoptRef(new DOMFileSystemSync(fileSystem->m_context, fileSystem->name(), fileSystem->type(), fileSystem->rootURL(), fileSystem->m_asyncFileSystem.release())); |
| } |
| |
| DOMFileSystemSync::DOMFileSystemSync(ScriptExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL, PassOwnPtr<AsyncFileSystem> asyncFileSystem) |
| : DOMFileSystemBase(context, name, type, rootURL, asyncFileSystem) |
| { |
| } |
| |
| DOMFileSystemSync::~DOMFileSystemSync() |
| { |
| } |
| |
| PassRefPtr<DirectoryEntrySync> DOMFileSystemSync::root() |
| { |
| return DirectoryEntrySync::create(this, DOMFilePath::root); |
| } |
| |
| namespace { |
| |
| class CreateFileHelper : public AsyncFileSystemCallbacks { |
| public: |
| class CreateFileResult : public RefCounted<CreateFileResult> { |
| public: |
| static PassRefPtr<CreateFileResult> create() |
| { |
| return adoptRef(new CreateFileResult()); |
| } |
| |
| bool m_failed; |
| int m_code; |
| RefPtr<File> m_file; |
| |
| private: |
| CreateFileResult() |
| : m_failed(false) |
| , m_code(0) |
| { |
| } |
| |
| ~CreateFileResult() |
| { |
| } |
| friend class WTF::RefCounted<CreateFileResult>; |
| }; |
| |
| static PassOwnPtr<CreateFileHelper> create(PassRefPtr<CreateFileResult> result, const String& name, const KURL& url, FileSystemType type) |
| { |
| return adoptPtr(new CreateFileHelper(result, name, url, type)); |
| } |
| |
| virtual void didFail(int code) |
| { |
| m_result->m_failed = true; |
| m_result->m_code = code; |
| } |
| |
| virtual ~CreateFileHelper() |
| { |
| } |
| |
| virtual void didCreateSnapshotFile(const FileMetadata& metadata, PassRefPtr<BlobDataHandle> snapshot) |
| { |
| // We can't directly use the snapshot blob data handle because the content type on it hasn't been set. |
| // The |snapshot| param is here to provide a a chain of custody thru thread bridging that is held onto until |
| // *after* we've coined a File with a new handle that has the correct type set on it. This allows the |
| // blob storage system to track when a temp file can and can't be safely deleted. |
| |
| // For regular filesystem types (temporary or persistent), we should not cache file metadata as it could change File semantics. |
| // For other filesystem types (which could be platform-specific ones), there's a chance that the files are on remote filesystem. |
| // If the port has returned metadata just pass it to File constructor (so we may cache the metadata). |
| // FIXME: We should use the snapshot metadata for all files. |
| // https://www.w3.org/Bugs/Public/show_bug.cgi?id=17746 |
| if (m_type == FileSystemTypeTemporary || m_type == FileSystemTypePersistent) { |
| m_result->m_file = File::createWithName(metadata.platformPath, m_name); |
| } else if (!metadata.platformPath.isEmpty()) { |
| // If the platformPath in the returned metadata is given, we create a File object for the path. |
| m_result->m_file = File::createForFileSystemFile(m_name, metadata).get(); |
| } else { |
| // Otherwise create a File from the FileSystem URL. |
| m_result->m_file = File::createForFileSystemFile(m_url, metadata).get(); |
| } |
| } |
| private: |
| CreateFileHelper(PassRefPtr<CreateFileResult> result, const String& name, const KURL& url, FileSystemType type) |
| : m_result(result) |
| , m_name(name) |
| , m_url(url) |
| , m_type(type) |
| { |
| } |
| |
| RefPtr<CreateFileResult> m_result; |
| String m_name; |
| KURL m_url; |
| FileSystemType m_type; |
| }; |
| |
| } // namespace |
| |
| PassRefPtr<File> DOMFileSystemSync::createFile(const FileEntrySync* fileEntry, ExceptionCode& ec) |
| { |
| ec = 0; |
| KURL fileSystemURL = createFileSystemURL(fileEntry); |
| RefPtr<CreateFileHelper::CreateFileResult> result(CreateFileHelper::CreateFileResult::create()); |
| m_asyncFileSystem->createSnapshotFileAndReadMetadata(fileSystemURL, CreateFileHelper::create(result, fileEntry->name(), fileSystemURL, type())); |
| if (!m_asyncFileSystem->waitForOperationToComplete()) { |
| ec = FileException::ABORT_ERR; |
| return 0; |
| } |
| if (result->m_failed) { |
| ec = result->m_code; |
| return 0; |
| } |
| return result->m_file; |
| } |
| |
| namespace { |
| |
| class ReceiveFileWriterCallback : public FileWriterBaseCallback { |
| public: |
| static PassRefPtr<ReceiveFileWriterCallback> create() |
| { |
| return adoptRef(new ReceiveFileWriterCallback()); |
| } |
| |
| bool handleEvent(FileWriterBase* fileWriterBase) |
| { |
| #ifndef NDEBUG |
| m_fileWriterBase = fileWriterBase; |
| #else |
| ASSERT_UNUSED(fileWriterBase, fileWriterBase); |
| #endif |
| return true; |
| } |
| |
| #ifndef NDEBUG |
| FileWriterBase* fileWriterBase() |
| { |
| return m_fileWriterBase; |
| } |
| #endif |
| |
| private: |
| ReceiveFileWriterCallback() |
| #ifndef NDEBUG |
| : m_fileWriterBase(0) |
| #endif |
| { |
| } |
| |
| #ifndef NDEBUG |
| FileWriterBase* m_fileWriterBase; |
| #endif |
| }; |
| |
| class LocalErrorCallback : public ErrorCallback { |
| public: |
| static PassRefPtr<LocalErrorCallback> create() |
| { |
| return adoptRef(new LocalErrorCallback()); |
| } |
| |
| bool handleEvent(FileError* error) |
| { |
| m_error = error; |
| return true; |
| } |
| |
| FileError* error() |
| { |
| return m_error.get(); |
| } |
| |
| private: |
| LocalErrorCallback() |
| { |
| } |
| RefPtr<FileError> m_error; |
| }; |
| |
| } |
| |
| PassRefPtr<FileWriterSync> DOMFileSystemSync::createWriter(const FileEntrySync* fileEntry, ExceptionCode& ec) |
| { |
| ASSERT(fileEntry); |
| ec = 0; |
| |
| |
| RefPtr<FileWriterSync> fileWriter = FileWriterSync::create(); |
| RefPtr<ReceiveFileWriterCallback> successCallback = ReceiveFileWriterCallback::create(); |
| RefPtr<LocalErrorCallback> errorCallback = LocalErrorCallback::create(); |
| |
| OwnPtr<FileWriterBaseCallbacks> callbacks = FileWriterBaseCallbacks::create(fileWriter, successCallback, errorCallback); |
| m_asyncFileSystem->createWriter(fileWriter.get(), createFileSystemURL(fileEntry), callbacks.release()); |
| if (!m_asyncFileSystem->waitForOperationToComplete()) { |
| ec = FileException::ABORT_ERR; |
| return 0; |
| } |
| if (errorCallback->error()) { |
| ASSERT(!successCallback->fileWriterBase()); |
| ec = FileException::ErrorCodeToExceptionCode(errorCallback->error()->code()); |
| return 0; |
| } |
| ASSERT(successCallback->fileWriterBase()); |
| ASSERT(static_cast<FileWriterSync*>(successCallback->fileWriterBase()) == fileWriter.get()); |
| return fileWriter; |
| } |
| |
| } |