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com.imagero.uio.io
Class MSInputStream  view MSInputStream download MSInputStream.java

java.lang.Object
  extended byjava.io.InputStream
      extended bycom.imagero.uio.io.MSInputStream
All Implemented Interfaces:
java.io.Closeable

public class MSInputStream
extends java.io.InputStream

MSInputStream.java
MS = MultipleSource


Field Summary
protected  byte[] buf
           
(package private)  com.imagero.uio.buffer.BufferManager bufferManager
           
protected  int count
           
protected  int mark
           
protected  int pos
           
(package private)  int totalCount
           
(package private)  int totalRead
           
(package private)  int vcount
           
(package private)  int vpos
           
 
Constructor Summary
MSInputStream(com.imagero.uio.buffer.Buffer[] ds)
          create InputStream over multiple Buffers
MSInputStream(com.imagero.uio.buffer.BufferManager bufferManager)
           
MSInputStream(java.util.Vector v)
          create InputStream over multiple byte arrays
 
Method Summary
 int available()
          This method returns the number of bytes that can be read from this stream before a read can block.
protected  int countBytes()
           
 void debug()
           
 void debug(int len)
           
 void debug(java.io.OutputStream out)
           
protected  void gotoAbsPos(int absPos)
           
 void mark(int readAheadLimit)
          This method marks a position in the input to which the stream can be "reset" by calling the reset() method.
 boolean markSupported()
          This method returns a boolean that indicates whether the mark/reset methods are supported in this class.
protected  void nextArray()
           
static void printHex(int value)
           
 int read()
          This method reads an unsigned byte from the input stream and returns it as an int in the range of 0-255.
 int read(byte[] b, int off, int len)
          This method read bytes from a stream and stores them into a caller supplied buffer.
 void reset()
          This method resets a stream to the point where the mark() method was called.
 long skip(long n)
          This method skips the specified number of bytes in the stream.
 
Methods inherited from class java.io.InputStream
close, read
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

bufferManager

com.imagero.uio.buffer.BufferManager bufferManager

vpos

int vpos

vcount

int vcount

totalRead

int totalRead

totalCount

int totalCount

buf

protected byte[] buf

pos

protected int pos

count

protected int count

mark

protected int mark
Constructor Detail

MSInputStream

public MSInputStream(java.util.Vector v)
create InputStream over multiple byte arrays


MSInputStream

public MSInputStream(com.imagero.uio.buffer.Buffer[] ds)
create InputStream over multiple Buffers


MSInputStream

public MSInputStream(com.imagero.uio.buffer.BufferManager bufferManager)
Method Detail

countBytes

protected int countBytes()

nextArray

protected void nextArray()

read

public int read(byte[] b,
                int off,
                int len)
         throws java.io.IOException
Description copied from class: java.io.InputStream
This method read bytes from a stream and stores them into a caller supplied buffer. It starts storing the data at index off into the buffer and attempts to read len bytes. This method can return before reading the number of bytes requested. The actual number of bytes read is returned as an int. A -1 is returned to indicate the end of the stream.

This method will block until some data can be read.

This method operates by calling the single byte read() method in a loop until the desired number of bytes are read. The read loop stops short if the end of the stream is encountered or if an IOException is encountered on any read operation except the first. If the first attempt to read a bytes fails, the IOException is allowed to propagate upward. And subsequent IOException is caught and treated identically to an end of stream condition. Subclasses can (and should if possible) override this method to provide a more efficient implementation.


read

public int read()
         throws java.io.IOException
Description copied from class: java.io.InputStream
This method reads an unsigned byte from the input stream and returns it as an int in the range of 0-255. This method also will return -1 if the end of the stream has been reached.

This method will block until the byte can be read.


printHex

public static void printHex(int value)

skip

public long skip(long n)
Description copied from class: java.io.InputStream
This method skips the specified number of bytes in the stream. It returns the actual number of bytes skipped, which may be less than the requested amount.

This method reads and discards bytes into a byte array until the specified number of bytes were skipped or until either the end of stream is reached or a read attempt returns a short count. Subclasses can override this metho to provide a more efficient implementation where one exists.


available

public int available()
Description copied from class: java.io.InputStream
This method returns the number of bytes that can be read from this stream before a read can block. A return of 0 indicates that blocking might (or might not) occur on the very next read attempt.

This method always returns 0 in this class


mark

public void mark(int readAheadLimit)
Description copied from class: java.io.InputStream
This method marks a position in the input to which the stream can be "reset" by calling the reset() method. The parameter @code{readlimit} is the number of bytes that can be read from the stream after setting the mark before the mark becomes invalid. For example, if mark() is called with a read limit of 10, then when 11 bytes of data are read from the stream before the reset() method is called, then the mark is invalid and the stream object instance is not required to remember the mark.

This method does nothing in this class, but subclasses may override it to provide mark/reset functionality.


gotoAbsPos

protected void gotoAbsPos(int absPos)
                   throws java.io.IOException

reset

public void reset()
           throws java.io.IOException
Description copied from class: java.io.InputStream
This method resets a stream to the point where the mark() method was called. Any bytes that were read after the mark point was set will be re-read during subsequent reads.

This method always throws an IOException in this class, but subclasses can override this method if they provide mark/reset functionality.


markSupported

public boolean markSupported()
Description copied from class: java.io.InputStream
This method returns a boolean that indicates whether the mark/reset methods are supported in this class. Those methods can be used to remember a specific point in the stream and reset the stream to that point.

This method always returns false in this class, but subclasses can override this method to return true if they support mark/reset functionality.


debug

public void debug(int len)
           throws java.io.IOException

debug

public void debug()
           throws java.io.IOException

debug

public void debug(java.io.OutputStream out)
           throws java.io.IOException