| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef WEBKIT_BLOB_BLOB_URL_REQUEST_JOB_H_ |
| #define WEBKIT_BLOB_BLOB_URL_REQUEST_JOB_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_callback_factory.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/platform_file.h" |
| #include "base/task.h" |
| #include "net/base/completion_callback.h" |
| #include "net/http/http_byte_range.h" |
| #include "net/url_request/url_request_job.h" |
| #include "webkit/blob/blob_data.h" |
| |
| namespace base { |
| class MessageLoopProxy; |
| struct PlatformFileInfo; |
| } |
| |
| namespace net { |
| class FileStream; |
| } |
| |
| namespace webkit_blob { |
| |
| // A request job that handles reading blob URLs. |
| class BlobURLRequestJob : public net::URLRequestJob { |
| public: |
| BlobURLRequestJob(net::URLRequest* request, |
| BlobData* blob_data, |
| base::MessageLoopProxy* resolving_message_loop_proxy); |
| virtual ~BlobURLRequestJob(); |
| |
| // net::URLRequestJob methods. |
| virtual void Start(); |
| virtual void Kill(); |
| virtual bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read); |
| virtual bool GetMimeType(std::string* mime_type) const; |
| virtual void GetResponseInfo(net::HttpResponseInfo* info); |
| virtual int GetResponseCode() const; |
| virtual void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers); |
| |
| private: |
| void CloseStream(); |
| void ResolveFile(const FilePath& file_path); |
| void CountSize(); |
| void Seek(int64 offset); |
| void AdvanceItem(); |
| void AdvanceBytesRead(int result); |
| int ComputeBytesToRead() const; |
| bool ReadLoop(int* bytes_read); |
| bool ReadItem(); |
| bool ReadBytes(const BlobData::Item& item); |
| bool DispatchReadFile(const BlobData::Item& item); |
| bool ReadFile(const BlobData::Item& item); |
| void HeadersCompleted(int status_code, const std::string& status_txt); |
| int ReadCompleted(); |
| void NotifySuccess(); |
| void NotifyFailure(int); |
| |
| void DidStart(); |
| void DidResolve(base::PlatformFileError rv, |
| const base::PlatformFileInfo& file_info); |
| void DidOpen(base::PlatformFileError rv, |
| base::PassPlatformFile file, |
| bool created); |
| void DidRead(int result); |
| |
| base::ScopedCallbackFactory<BlobURLRequestJob> callback_factory_; |
| scoped_refptr<BlobData> blob_data_; |
| scoped_refptr<base::MessageLoopProxy> file_thread_proxy_; |
| net::CompletionCallbackImpl<BlobURLRequestJob> io_callback_; |
| std::vector<int64> item_length_list_; |
| scoped_ptr<net::FileStream> stream_; |
| size_t item_index_; |
| int64 total_size_; |
| int64 current_item_offset_; |
| int64 remaining_bytes_; |
| scoped_refptr<net::IOBuffer> read_buf_; |
| int read_buf_offset_; |
| int read_buf_size_; |
| int read_buf_remaining_bytes_; |
| int bytes_to_read_; |
| bool error_; |
| bool headers_set_; |
| bool byte_range_set_; |
| net::HttpByteRange byte_range_; |
| scoped_ptr<net::HttpResponseInfo> response_info_; |
| ScopedRunnableMethodFactory<BlobURLRequestJob> method_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BlobURLRequestJob); |
| }; |
| |
| } // namespace webkit_blob |
| |
| #endif // WEBKIT_BLOB_BLOB_URL_REQUEST_JOB_H_ |