net.sf.scuba.smartcards

Interface FileSystemStructured

All Known Implementing Classes:

AbstractFileSystemStructured

public interface FileSystemStructured

Interface for minimal ISO file systems. Implement this interface to tell CardFileInputStream how to deal with card files.

Method Summary

Modifier and Type	Method and Description
FileInfo[]	getSelectedPath() Identifies the currently selected file.
byte[]	readBinary(int offset, int length) Reads a fragment of the currently selected file.
void	selectFile(short fid) Selects a file.

Method Detail

selectFile

void selectFile(short fid)
         throws CardServiceException

Selects a file.

Parameters:

fid - indicates which file to select

Throws:

CardServiceException - in case of error

readBinary

byte[] readBinary(int offset,
                  int length)
           throws CardServiceException

Reads a fragment of the currently selected file.

Parameters:

offset - offset

length - the number of bytes to read (the result may be shorter, though)

Returns:

contents of currently selected file, contains at least 1 byte, at most length.

Throws:

CardServiceException - on error (for instance: end of file)

getSelectedPath

FileInfo[] getSelectedPath()
                    throws CardServiceException

Identifies the currently selected file.

Returns:

a path of file identifiers or null.

Throws:

CardServiceException - on error