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chrome/browser/renderer_host/redirect_to_file_resource_handler.h

Index: chrome/browser/renderer_host/redirect_to_file_resource_handler.h
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--- chrome/browser/renderer_host/redirect_to_file_resource_handler.h	(revision 0)
+++ chrome/browser/renderer_host/redirect_to_file_resource_handler.h	(revision 0)
@@ -0,0 +1,73 @@
+// Copyright (c) 2006-2008 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 CHROME_BROWSER_RENDERER_HOST_REDIRECT_TO_FILE_RESOURCE_HANDLER_H_
+#define CHROME_BROWSER_RENDERER_HOST_REDIRECT_TO_FILE_RESOURCE_HANDLER_H_
+
+#include "base/file_path.h"
+#include "base/ref_counted.h"
+#include "chrome/browser/renderer_host/resource_handler.h"
+#include "net/base/completion_callback.h"
+#include "net/base/file_stream.h"
+
+class ResourceDispatcherHost;
+
+namespace net {
+class GrowableIOBuffer;
+}
+
+// Redirects network data to a file.  This is intended to be layered in front
+// of either the AsyncResourceHandler or the SyncResourceHandler.
+class RedirectToFileResourceHandler : public ResourceHandler {
+ public:
+  RedirectToFileResourceHandler(
+      ResourceHandler* next_handler,
+      int process_id,
+      ResourceDispatcherHost* resource_dispatcher_host);
+
+  // ResourceHandler implementation:
+  bool OnUploadProgress(int request_id, uint64 position, uint64 size);
+  bool OnRequestRedirected(int request_id, const GURL& new_url,
+                           ResourceResponse* response, bool* defer);
+  bool OnResponseStarted(int request_id, ResourceResponse* response);
+  bool OnWillStart(int request_id, const GURL& url, bool* defer);
+  bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size,
+                  int min_size);
+  bool OnReadCompleted(int request_id, int* bytes_read);
+  bool OnResponseCompleted(int request_id,
+                           const URLRequestStatus& status,
+                           const std::string& security_info);
+  void OnRequestClosed();
+
+ private:
+  virtual ~RedirectToFileResourceHandler();
+  void DidWriteToFile(int result);
+  bool WriteMore();
+  bool BufIsFull() const;
+
+  ResourceDispatcherHost* host_;
+  scoped_refptr<ResourceHandler> next_handler_;
+  int process_id_;
+  int request_id_;
+
+  // We allocate a single, fixed-size IO buffer (buf_) used to read from the
+  // network (buf_write_pending_ is true while the system is copying data into
+  // buf_), and then write this buffer out to disk (write_callback_pending_ is
+  // true while writing to disk).  Reading from the network is suspended while
+  // the buffer is full (BufIsFull returns true).  The write_cursor_ member
+  // tracks the offset into buf_ that we are writing to disk.
+
+  scoped_refptr<net::GrowableIOBuffer> buf_;
+  bool buf_write_pending_;
+  int write_cursor_;
+
+  FilePath file_path_;
+  net::FileStream file_stream_;
+  net::CompletionCallbackImpl<RedirectToFileResourceHandler> write_callback_;
+  bool write_callback_pending_;
+
+  DISALLOW_COPY_AND_ASSIGN(RedirectToFileResourceHandler);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_REDIRECT_TO_FILE_RESOURCE_HANDLER_H_
Property changes on: chrome\browser\renderer_host\redirect_to_file_resource_handler.h
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Added: svn:eol-style
   + LF