us.zuercher.gpx2map.image.netpbm
Class NetpbmImageFactory.CanLoadLogicTarget

java.lang.Object
  us.zuercher.gpx2map.image.netpbm.NetpbmImageFactory.CanLoadLogicTarget

All Implemented Interfaces:

NetpbmImageFactory.GzipRetryLogicTarget

Enclosing class:

NetpbmImageFactory

private class NetpbmImageFactory.CanLoadLogicTarget
extends Object
implements NetpbmImageFactory.GzipRetryLogicTarget

CanLoadLogicTarget implements NetpbmImageFactory.GzipRetryLogicTarget to retrieve the Netpbm magic number from an image file.

Constructor Summary

private

NetpbmImageFactory.CanLoadLogicTarget()

Method Summary

Object

performAction(BufferedInputStream input, NetpbmImageFactory.ExceptionHolder exceptionHolder) Attempts to read a the magic number for a Netpbm image from the given stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

NetpbmImageFactory.CanLoadLogicTarget

private NetpbmImageFactory.CanLoadLogicTarget()

Method Detail

performAction

public Object performAction(BufferedInputStream input,
                            NetpbmImageFactory.ExceptionHolder exceptionHolder)
                     throws IOException

Attempts to read a the magic number for a Netpbm image from the given stream.

Specified by:

performAction in interface NetpbmImageFactory.GzipRetryLogicTarget

Parameters:

input - a BufferedInputStream that supports mark/reset.

exceptionHolder - not used

Returns:

a NetpbmImage

Throws:

IOException - if the stream cannot be read or doesn't support mark/reset