totalcross.io

Class PDBStream

java.lang.Object

totalcross.io.Stream

totalcross.io.PDBStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class PDBStream
extends Stream

Used to make a PDBFile act as a single Stream, reading all records in sequence. Usually you use this to open a photo taken with the Palm's camera. Note that it does not support writings.

Field Summary

Fields

Modifier and Type	Field and Description
protected PDBFile	pdb
protected int	recSize

Fields inherited from class totalcross.io.Stream

skipBuffer

Constructor Summary

Constructors

Constructor and Description
PDBStream(java.lang.String name) Constructs a new PDBStream opening a PDB with the given name in READ_WRITE mode.

Method Summary

Modifier and Type	Method and Description
void	close() Closes the underlying PDBFile.
int	readBytes(byte[] buf, int start, int count) Reads bytes from the stream.
int	writeBytes(byte[] buf, int start, int count) Always throws IOException; not implemented.

Methods inherited from class totalcross.io.Stream

asInputStream, asOutputStream, asStream, asStream, skipBytes, wrapInputStream, wrapInputStreamToStream, write, writeBytes, writeBytes, writeBytes

Methods inherited from class java.lang.Object

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

Field Detail

recSize

protected int recSize

pdb

protected PDBFile pdb

Constructor Detail

PDBStream

public PDBStream(java.lang.String name)
          throws IllegalArgumentIOException,
                 FileNotFoundException,
                 IOException

Constructs a new PDBStream opening a PDB with the given name in READ_WRITE mode.

Parameters:

name - The pdb name of the file to open in the format Name.CRTR.TYPE.

Throws:

IllegalArgumentIOException

FileNotFoundException

IOException

Method Detail

writeBytes

public int writeBytes(byte[] buf,
                      int start,
                      int count)
               throws IOException

Always throws IOException; not implemented.

Specified by:

writeBytes in class Stream

Parameters:

buf - the byte array to write data from

start - the start position in the byte array

count - the number of bytes to write

Returns:

the number of bytes actually written

Throws:

IOException

close

public void close()
           throws IOException

Closes the underlying PDBFile.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

IOException - If an I/O error occurs.

readBytes

public int readBytes(byte[] buf,
                     int start,
                     int count)
              throws IOException

Description copied from class: Stream

Reads bytes from the stream. Returns the number of bytes actually read or -1 if the end of the stream was reached. (if applicable to the stream)

Specified by:

readBytes in class Stream

Parameters:

buf - the byte array to read data into

start - the start position in the array

count - the number of bytes to read

Throws:

IOException