net.sf.sevenzipjbinding.impl
Class RandomAccessFileOutStream

java.lang.Object
  net.sf.sevenzipjbinding.impl.RandomAccessFileOutStream

All Implemented Interfaces:

IOutStream, ISeekableStream, ISequentialOutStream

public class RandomAccessFileOutStream
extends java.lang.Object
implements IOutStream

Implementation of IOutStream using RandomAccessFile.

Since:

4.65-1

Author:

Boris Brodski

Field Summary

Fields inherited from interface net.sf.sevenzipjbinding.ISeekableStream

SEEK_CUR, SEEK_END, SEEK_SET

Constructor Summary

RandomAccessFileOutStream(java.io.RandomAccessFile randomAccessFile)
Constructs instance of the class from random access file.

Method Summary

void	close() Closes random access file.
long	seek(long offset, int seekOrigin) Move current location pointer to the new offset depending on seekOrigin. Note: depending on the archive format and the data size this method may be called from different threads.
void	setSize(long newSize) Set new size for the out stream. Note: depending on the archive format and the data size this method may be called from different threads.
int	write(byte[] data) Write data byte array to the stream.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RandomAccessFileOutStream

public RandomAccessFileOutStream(java.io.RandomAccessFile randomAccessFile)

Constructs instance of the class from random access file.

Parameters:

randomAccessFile - random access file to use

Method Detail

seek

public long seek(long offset,
                 int seekOrigin)
          throws SevenZipException

Move current location pointer to the new offset depending on seekOrigin.

Note: depending on the archive format and the data size this method may be called from different threads. Synchronized implementation may be required.

Specified by:

seek in interface ISeekableStream

Parameters:

offset - absolute or relative offset in the stream to move to

seekOrigin - on of three possible seek origins:

• ISeekableStream.SEEK_SET - offset is an absolute offset to move to,
• ISeekableStream.SEEK_CUR - offset is a relative offset to the current position in stream,
• ISeekableStream.SEEK_END - offset is an offset from the end of the stream

(offset <= 0).

Returns:

new absolute position in the stream.

Throws:

SevenZipException - in error case. If this method ends with an exception, the current operation will be reported to 7-Zip as failed. There are no guarantee, that there are no further call back methods will get called. The first and last thrown exceptions will be saved and thrown later on from the originally called method such as ISevenZipInArchive.extract() or SevenZip.openInArchive(). Up to four exceptions depending on the situation can be saved for further analysis. See SevenZipException and SevenZipException.printStackTraceExtended() for details.

setSize

public void setSize(long newSize)
             throws SevenZipException

Set new size for the out stream.

Note: depending on the archive format and the data size this method may be called from different threads. Synchronized implementation may be required.

Specified by:

setSize in interface IOutStream

Parameters:

newSize - new size

Throws:

SevenZipException - in error case. If this method ends with an exception, the current operation will be reported to 7-Zip as failed. There are no guarantee, that there are no further call back methods will get called. The first and last thrown exceptions will be saved and thrown later on from the originally called method such as ISevenZipInArchive.extract() or SevenZip.openInArchive(). Up to four exceptions depending on the situation can be saved for further analysis. See SevenZipException and SevenZipException.printStackTraceExtended() for details.

write

public int write(byte[] data)
          throws SevenZipException

Write data byte array to the stream. If data.length > 0 this function must write at least 1 byte. This function is allowed to write less than data.length bytes. You must call Write function in loop, if you need to write exact amount of data.

Note: depending on the archive format and the data size this method may be called from different threads. Synchronized implementation may be required.

Specified by:

write in interface ISequentialOutStream

Parameters:

data - data to write

Returns:

count of written bytes

Throws:

SevenZipException - in error case. If this method ends with an exception, the current operation will be reported to 7-Zip as failed. There are no guarantee, that there are no further call back methods will get called. The first and last thrown exceptions will be saved and thrown later on from the originally called method such as ISevenZipInArchive.extract() or SevenZip.openInArchive(). Up to four exceptions depending on the situation can be saved for further analysis. See SevenZipException and SevenZipException.printStackTraceExtended() for details.

close

public void close()
           throws java.io.IOException

Closes random access file. After this call no more methods should be called.

Throws:

java.io.IOException - see RandomAccessFile.close()