org.apache.poi.poifs.filesystem
Class NDocumentInputStream

java.lang.Object
  java.io.InputStream
      org.apache.poi.poifs.filesystem.DocumentInputStream
          org.apache.poi.poifs.filesystem.NDocumentInputStream

All Implemented Interfaces:

java.io.Closeable, LittleEndianInput

public final class NDocumentInputStream
extends DocumentInputStream

This class provides methods to read a DocumentEntry managed by a NPOIFSFileSystem instance.

Field Summary

Fields inherited from class org.apache.poi.poifs.filesystem.DocumentInputStream

EOF, SIZE_INT, SIZE_LONG, SIZE_SHORT

Constructor Summary

NDocumentInputStream(DocumentEntry document)
Create an InputStream from the specified DocumentEntry

NDocumentInputStream(NPOIFSDocument document)
Create an InputStream from the specified Document

Method Summary

int	available()
void	close()
void	mark(int ignoredReadlimit)
int	read()
int	read(byte[] b, int off, int len)
byte	readByte()
double	readDouble()
void	readFully(byte[] buf, int off, int len)
int	readInt()
long	readLong()
short	readShort()
int	readUByte()
int	readUShort()
void	reset() Repositions this stream to the position at the time the mark() method was last called on this input stream.
long	skip(long n)

Methods inherited from class org.apache.poi.poifs.filesystem.DocumentInputStream

markSupported, read, readFully

Methods inherited from class java.lang.Object

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

Constructor Detail

NDocumentInputStream

public NDocumentInputStream(DocumentEntry document)
                     throws java.io.IOException

Create an InputStream from the specified DocumentEntry

Parameters:

document - the DocumentEntry to be read

Throws:

java.io.IOException - if the DocumentEntry cannot be opened (like, maybe it has been deleted?)

NDocumentInputStream

public NDocumentInputStream(NPOIFSDocument document)

Create an InputStream from the specified Document

Parameters:

document - the Document to be read

Method Detail

available

public int available()

Specified by:

available in interface LittleEndianInput

Overrides:

available in class DocumentInputStream

close

public void close()

Specified by:

close in interface java.io.Closeable

Overrides:

close in class DocumentInputStream

mark

public void mark(int ignoredReadlimit)

Overrides:

mark in class DocumentInputStream

read

public int read()
         throws java.io.IOException

Overrides:

read in class DocumentInputStream

Throws:

java.io.IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws java.io.IOException

Overrides:

read in class DocumentInputStream

Throws:

java.io.IOException

reset

public void reset()

Repositions this stream to the position at the time the mark() method was last called on this input stream. If mark() has not been called this method repositions the stream to its beginning.

Overrides:

reset in class DocumentInputStream

skip

public long skip(long n)
          throws java.io.IOException

Overrides:

skip in class DocumentInputStream

Throws:

java.io.IOException

readFully

public void readFully(byte[] buf,
                      int off,
                      int len)

Specified by:

readFully in interface LittleEndianInput

Overrides:

readFully in class DocumentInputStream

readByte

public byte readByte()

Specified by:

readByte in interface LittleEndianInput

Overrides:

readByte in class DocumentInputStream

readDouble

public double readDouble()

Specified by:

readDouble in interface LittleEndianInput

Overrides:

readDouble in class DocumentInputStream

readLong

public long readLong()

Specified by:

readLong in interface LittleEndianInput

Overrides:

readLong in class DocumentInputStream

readShort

public short readShort()

Specified by:

readShort in interface LittleEndianInput

Overrides:

readShort in class DocumentInputStream

readInt

public int readInt()

Specified by:

readInt in interface LittleEndianInput

Overrides:

readInt in class DocumentInputStream

readUShort

public int readUShort()

Specified by:

readUShort in interface LittleEndianInput

Overrides:

readUShort in class DocumentInputStream

readUByte

public int readUByte()

Specified by:

readUByte in interface LittleEndianInput

Overrides:

readUByte in class DocumentInputStream