com.crionics.jpdf
Class FileByteReader

java.lang.Object
  com.crionics.jpdf.FileByteReader

All Implemented Interfaces:

ByteReader

Direct Known Subclasses:

URLByteReader

public class FileByteReader
extends java.lang.Object
implements ByteReader

This class is used to parse the document from a random access file

Constructor Summary

FileByteReader(java.io.File theFile)
Creates a new FileByteReader object.

FileByteReader(java.io.File theFile, boolean checkExistance)
Creates a new FileByteReader object.

Method Summary

void	append(java.util.ArrayList buffer) Appends the array at the end of the bytereader.
void	close() Closes the document.
java.io.File	getFile()
java.lang.String	getID() Returns a human readable description of this byte reader (for instance a path for a file,...).
java.io.InputStream	getInputStream() Returns an InputStream on the document.
int	length() Returns the size of the document in bytes.
void	open() Opens the document.
int	readUnsignedByte() Returns an unsigned byte from the document.
void	readUnsignedBytes(byte[] buffer, int len) reads LEN bytes of data to BUFFER
void	seek(int pos) Sets the cursor position of the specified offset.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileByteReader

public FileByteReader(java.io.File theFile)
               throws java.io.IOException

Creates a new FileByteReader object.

Parameters:

theFile - the file to work on

Throws:

java.io.IOException - io issue

FileByteReader

public FileByteReader(java.io.File theFile,
                      boolean checkExistance)
               throws java.io.IOException

Creates a new FileByteReader object.

Parameters:

theFile - the file to read the pdf document from

checkExistance - true is file existance must be checked

Throws:

java.io.IOException - io problem

Method Detail

append

public void append(java.util.ArrayList buffer)
            throws java.io.IOException

Description copied from interface: ByteReader

Appends the array at the end of the bytereader.

Specified by:

append in interface ByteReader

Parameters:

buffer - bytes to append.

Throws:

java.io.IOException - if an IO problem happens.

See Also:

ByteReader.append(ArrayList)

close

public void close()
           throws java.io.IOException

Description copied from interface: ByteReader

Closes the document.

Specified by:

close in interface ByteReader

Throws:

java.io.IOException - if an IO problem happens.

See Also:

ByteReader.close()

getFile

public java.io.File getFile()

getID

public java.lang.String getID()

Description copied from interface: ByteReader

Returns a human readable description of this byte reader (for instance a path for a file,...).

Specified by:

getID in interface ByteReader

Returns:

A human readable description.

See Also:

ByteReader.getID()

getInputStream

public java.io.InputStream getInputStream()
                                   throws java.io.IOException

Description copied from interface: ByteReader

Returns an InputStream on the document.

Specified by:

getInputStream in interface ByteReader

Returns:

an InputStream on the document.

Throws:

java.io.IOException - if an IO problem happens.

See Also:

ByteReader.getInputStream()

length

public int length()

Description copied from interface: ByteReader

Returns the size of the document in bytes.

Specified by:

length in interface ByteReader

Returns:

The size of the document in bytes.

See Also:

ByteReader.length()

open

public void open()
          throws java.io.IOException

Description copied from interface: ByteReader

Opens the document.

Specified by:

open in interface ByteReader

Throws:

java.io.IOException - if an IO problem happens.

See Also:

ByteReader.open()

readUnsignedByte

public int readUnsignedByte()
                     throws java.io.IOException

Description copied from interface: ByteReader

Returns an unsigned byte from the document.

Specified by:

readUnsignedByte in interface ByteReader

Returns:

an unsigned byte from the document

Throws:

java.io.IOException - if an IO problem happens

See Also:

ByteReader.readUnsignedByte()

readUnsignedBytes

public void readUnsignedBytes(byte[] buffer,
                              int len)
                       throws java.io.IOException

reads LEN bytes of data to BUFFER

Specified by:

readUnsignedBytes in interface ByteReader

Parameters:

buffer - when to read the bytes to

len - number of bytes to read

Throws:

java.io.IOException - io issue

seek

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

Description copied from interface: ByteReader

Sets the cursor position of the specified offset.

Specified by:

seek in interface ByteReader

Parameters:

pos - offset in bytes.

Throws:

java.io.IOException - io problem.

See Also:

ByteReader.seek(int)