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org.apache.poi.poifs.filesystem
Class NDocumentInputStream

java.lang.Object
  extended by java.io.InputStream
      extended by org.apache.poi.poifs.filesystem.DocumentInputStream
          extended by 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, readPlain, readUInt
 
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
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