org.egothor.io
Class MemoryInputStream

java.lang.Object
  org.egothor.io.DataInputStream
      org.egothor.io.MemoryInputStream

All Implemented Interfaces:

DataInput

public class MemoryInputStream
extends DataInputStream

Author:

galambos

Constructor Summary

MemoryInputStream(byte[] buffer)
Creates a new instance of MemoryInputStream

MemoryInputStream(byte[] buffer, int begin)
Creates a new instance of MemoryInputStream

MemoryInputStream(byte[] buffer, int begin, int end)
Create an InputStream on top of a byte array.

MemoryInputStream(DataInput in, int size)

Method Summary

int	directRead(long from, byte[] arr) Read from the offset position without buffering.
long	getFilePointer() Gets the filePointer attribute of the DataInputStream object
long	getMarkPointer() Returns the offset of the mark if any, else returns 0.
void	jump()
long	length() Description of the Method
void	mark(long skip) Denote position at getFilePointer+skip for DataInput.jump().
int	read(byte[] arr, int offset, int max_len)
byte	readByte() Description of the Method
int	readFully(byte[] arr) Description of the Method
static int	readInt(byte[] rd_buff, int i) Reads the integer value from the array at the offset.
static long	readLong(byte[] rd_buff, int i) Reads the long-int value from the array at the offset.
void	seek(long pos) Description of the Method
java.lang.String	toString()

Methods inherited from class org.egothor.io.DataInputStream

close, readBoolean, readInt, readLong, readPack7, readPack7I, readShort, readString, readString, skipBytes, skipPack7, skipPack7I

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MemoryInputStream

public MemoryInputStream(byte[] buffer)

Creates a new instance of MemoryInputStream

MemoryInputStream

public MemoryInputStream(DataInput in,
                         int size)
                  throws java.io.IOException

Throws:

java.io.IOException

MemoryInputStream

public MemoryInputStream(byte[] buffer,
                         int begin)

Creates a new instance of MemoryInputStream

MemoryInputStream

public MemoryInputStream(byte[] buffer,
                         int begin,
                         int end)

Create an InputStream on top of a byte array.

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

readFully

public int readFully(byte[] arr)
              throws java.io.IOException

Description copied from class: DataInputStream

Description of the Method

Specified by:

readFully in interface DataInput

Specified by:

readFully in class DataInputStream

Parameters:

arr - Description of the Parameter

Returns:

Description of the Return Value

Throws:

java.io.IOException - Description of the Exception

read

public int read(byte[] arr,
                int offset,
                int max_len)
         throws java.io.IOException

Specified by:

read in interface DataInput

Specified by:

read in class DataInputStream

Parameters:

arr - Description of the Parameter

max_len - Description of the Parameter

Returns:

number of bytes read

Throws:

java.io.IOException - Description of the Exception

readByte

public byte readByte()
              throws java.io.IOException

Description copied from class: DataInputStream

Description of the Method

Specified by:

readByte in interface DataInput

Specified by:

readByte in class DataInputStream

Returns:

Description of the Return Value

Throws:

java.io.IOException - Description of the Exception

directRead

public int directRead(long from,
                      byte[] arr)
               throws java.io.IOException

Description copied from interface: DataInput

Read from the offset position without buffering. This operation moves the read head which may collide with buffered methods.

Specified by:

directRead in interface DataInput

Specified by:

directRead in class DataInputStream

Throws:

java.io.IOException

seek

public void seek(long pos)
          throws java.io.IOException

Description copied from class: DataInputStream

Description of the Method

Specified by:

seek in interface DataInput

Overrides:

seek in class DataInputStream

Parameters:

pos - Description of the Parameter

Throws:

java.io.IOException - Description of the Exception

length

public long length()
            throws java.io.IOException

Description copied from class: DataInputStream

Description of the Method

Specified by:

length in interface DataInput

Overrides:

length in class DataInputStream

Returns:

Description of the Return Value

Throws:

java.io.IOException - Description of the Exception

getMarkPointer

public long getMarkPointer()

Description copied from interface: DataInput

Returns the offset of the mark if any, else returns 0.

Specified by:

getMarkPointer in interface DataInput

Overrides:

getMarkPointer in class DataInputStream

jump

public void jump()
          throws java.io.IOException

Specified by:

jump in interface DataInput

Overrides:

jump in class DataInputStream

Throws:

java.io.IOException

mark

public void mark(long skip)

Description copied from interface: DataInput

Denote position at getFilePointer+skip for DataInput.jump().

Specified by:

mark in interface DataInput

Overrides:

mark in class DataInputStream

getFilePointer

public long getFilePointer()

Description copied from class: DataInputStream

Gets the filePointer attribute of the DataInputStream object

Specified by:

getFilePointer in interface DataInput

Overrides:

getFilePointer in class DataInputStream

Returns:

The filePointer value

readLong

public static long readLong(byte[] rd_buff,
                            int i)

Reads the long-int value from the array at the offset.

readInt

public static int readInt(byte[] rd_buff,
                          int i)

Reads the integer value from the array at the offset.