org.deepfs.util
Class TreePrinter

java.lang.Object
  org.deepfs.util.TreePrinter

All Implemented Interfaces:

FSTraversal

public final class TreePrinter
extends Object
implements FSTraversal

Produces tree(1)-like output of a directory hierarchy.

Author:

Workgroup DBIS, University of Konstanz 2005-10, ISC License, Alexander Holupirek

Constructor Summary

TreePrinter()

Method Summary

void	levelUpdate(int l) Event triggered once tree level has changed.
void	postDirectoryVisit(File d) Nothing is done when a directory is left.
void	postTraversalVisit(File d) Nothing special is done when the traversal is finished.
void	preDirectoryVisit(File d) Prints a line for tree(1)-like output of a directory.
void	preTraversalVisit(File d) Prints absolute path of directory to be visited subsequently.
void	regularFileVisit(File f) Prints a line for tree(1)-like output of a regular file.
void	symLinkVisit(File f) Prints a line for tree(1)-like output of a symbolic link.

Methods inherited from class java.lang.Object

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

Constructor Detail

TreePrinter

public TreePrinter()

Method Detail

preDirectoryVisit

public void preDirectoryVisit(File d)

Prints a line for tree(1)-like output of a directory. The line contains an indentation prefix and the name of the directory and is printed whenever a directory is entered during a filesystem traversal.

Specified by:

preDirectoryVisit in interface FSTraversal

Parameters:

d - the directory node

postDirectoryVisit

public void postDirectoryVisit(File d)

Nothing is done when a directory is left. This method contains no code.

Specified by:

postDirectoryVisit in interface FSTraversal

Parameters:

d - the directory node

regularFileVisit

public void regularFileVisit(File f)

Prints a line for tree(1)-like output of a regular file. The line contains an indentation prefix and the name of the file. It is printed whenever a regular file is visited during a filesystem traversal.

Specified by:

regularFileVisit in interface FSTraversal

Parameters:

f - the file

symLinkVisit

public void symLinkVisit(File f)

Prints a line for tree(1)-like output of a symbolic link. The line contains an indentation prefix and the name of the link. It is printed whenever a symbolic link is visited during a filesystem traversal. The traversal will not follow the link.

Specified by:

symLinkVisit in interface FSTraversal

Parameters:

f - the file

preTraversalVisit

public void preTraversalVisit(File d)

Prints absolute path of directory to be visited subsequently.

Specified by:

preTraversalVisit in interface FSTraversal

Parameters:

d - directory the traversal starts from

postTraversalVisit

public void postTraversalVisit(File d)

Nothing special is done when the traversal is finished. This method contains no code.

Specified by:

postTraversalVisit in interface FSTraversal

Parameters:

d - the directory node the traversal started from

levelUpdate

public void levelUpdate(int l)

Description copied from interface: FSTraversal

Event triggered once tree level has changed.

Specified by:

levelUpdate in interface FSTraversal

Parameters:

l - relative level/depth of traversal in directory hierarchy