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-rw-r--r--WebCore/html/FileStream.h101
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diff --git a/WebCore/html/FileStream.h b/WebCore/html/FileStream.h
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-/*
- * 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(BLOB) || ENABLE(FILE_WRITER)
-
-#include "ExceptionCode.h"
-#include "FileSystem.h"
-#include <wtf/Forward.h>
-#include <wtf/PassRefPtr.h>
-#include <wtf/RefCounted.h>
-
-namespace WebCore {
-
-class Blob;
-
-// All methods are synchronous.
-class FileStream : public RefCounted<FileStream> {
-public:
- static PassRefPtr<FileStream> create()
- {
- return adoptRef(new FileStream());
- }
- virtual ~FileStream();
-
- // FIXME: To be removed when we switch to using BlobData.
- void start();
-
- // Aborts the operation.
- void stop();
-
- // Gets the size of a file. Also validates if the file has been changed or not if the expected modification time is provided, i.e. non-zero.
- // Returns total number of bytes if successful. -1 otherwise.
- long long getSize(const String& path, double expectedModificationTime);
-
- // Opens a file for reading. The reading starts at the specified offset and lasts till the specified length.
- // Returns 0 on success. Exception code otherwise.
- ExceptionCode openForRead(const String& path, long long offset, long long length);
-
- // Opens a file for writing.
- // Returns 0 on success. Exception code otherwise.
- ExceptionCode openForWrite(const String& path);
-
- // Closes the file.
- void close();
-
- // Reads a file into the provided data buffer.
- // Returns number of bytes being read on success. -1 otherwise.
- // If 0 is returned, it means that the reading is completed.
- int read(char* buffer, int length);
-
- // Writes a blob to the file.
- // Returns number of bytes being written on success. -1 otherwise.
- int write(Blob*, long long position, int length);
-
- // Truncates the file to the specified position.
- // Returns 0 on success. Exception code otherwise.
- ExceptionCode truncate(long long position);
-
-private:
- FileStream();
-
- PlatformFileHandle m_handle;
- long long m_bytesProcessed;
- long long m_totalBytesToRead;
-};
-
-} // namespace WebCore
-
-#endif // ENABLE(BLOB) || ENABLE(FILE_WRITER)
-
-#endif // FileStream_h