diff -r 000000000000 -r 4f2f89ce4247 WebCore/html/FileStream.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/html/FileStream.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,78 @@
+/*
+ * 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.
+ */
+
+#ifndef FileStream_h
+#define FileStream_h
+
+#if ENABLE(FILE_READER) || ENABLE(FILE_WRITER)
+
+#include "FileStreamClient.h"
+#include "FileSystem.h"
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+
+namespace WebCore {
+
+class Blob;
+class String;
+
+// All methods are synchronous and should be called on File or Worker thread.
+class FileStream : public RefCounted<FileStream> {
+public:
+    static PassRefPtr<FileStream> create(FileStreamClient* client)
+    {
+        return adoptRef(new FileStream(client));
+    }
+    virtual ~FileStream();
+
+    void start();
+    void stop();
+
+    void openForRead(Blob*);
+    void openForWrite(const String& path);
+    void close();
+    void read(char* buffer, int length);
+    void write(Blob* blob, long long position, int length);
+    void truncate(long long position);
+
+private:
+    FileStream(FileStreamClient*);
+
+    FileStreamClient* m_client;
+    PlatformFileHandle m_handle;
+    long long m_bytesProcessed;
+    long long m_totalBytesToRead;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(FILE_READER) || ENABLE(FILE_WRITER)
+
+#endif // FileStream_h