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File::Find::Object.3pm

NAME

File::Find::Object - An object oriented File::Find replacement

SYNOPSIS

     use File::Find::Object;
     my $tree = File::Find::Object->new({}, @targets);
 
     while (my $r = $tree->next()) {
         print $r ."\n";
     }
 
 

DESCRIPTION

File::Find::Object does same job as File::Find but works like an object and with an iterator. As File::Find is not object oriented, one cannot perform multiple searches in the same application. The second problem of File::Find is its file processing: after starting its main loop, one cannot easilly wait for another event and so get the next result.

With File::Find::Object you can get the next file by calling the next() function, but setting a callback is still possible.

FUNCTIONS

new

     my $ffo = File::Find::Object->new( { options }, @targets);
 
 

Create a new File::Find::Object object. @targets is the list of directories or files which the object should explore.

options

depth

Boolean - returns the directory content before the directory itself.

nocrossfs

Boolean - doesn't continue on filesystems different than the parent.

followlink

Boolean - follow symlinks when they point to a directory.

You can safely set this option to true as File::Find::Object does not follow the link if it detects a loop.

filter

Function reference - should point to a function returning TRUE or FALSE. This function is called with the filename to filter, if the function return FALSE, the file is skipped.

callback

Function reference - should point to a function, which would be called each time a new file is returned. The function is called with the current filename as an argument.

next

Returns the next file found by the File::Find::Object. It returns undef once the scan is completed.

item

Returns the current filename found by the File::Find::Object object, i.e: the last value returned by next().

next_obj

Like next() only returns the result as a convenient File::Find::Object::Result object. "$ff->next()" is equivalent to "$ff->next_obj()->path()".

item_obj

Like item() only returns the result as a convenient File::Find::Object::Result object. "$ff->item()" is equivalent to "$ff->item_obj()->path()".

$ff->set_traverse_to([@children])

Sets the children to traverse to from the current node. Useful for pruning items to traverse.

$ff->prune()

Prunes the current directory. Equivalent to $ff->set_traverse_to([]).

[@children] = $ff->get_traverse_to()

Retrieves the children that will be traversed to.

[@files] = $ff->get_current_node_files_list()

Gets all the files that appear in the current directory. This value is constant for every node, and is useful to use as the basis of the argument for "set_traverse_to()".

BUGS

No bugs are known, but it doesn't mean there aren't any.

SEE ALSO

There's an article about this module in the Perl Advent Calendar of 2006: <http://perladvent.pm.org/2006/2/>.

File::Find is the core module for traversing files in perl, which has several limitations.

File::Next, File::Find::Iterator, File::Walker and the unmaintained File::FTS are alternatives to this module.

LICENSE

Copyright (C) 2005, 2006 by Olivier Thauvin

This package is free software; you can redistribute it and/or modify it under the following terms:

1. The GNU General Public License Version 2.0 - http://www.opensource.org/licenses/gpl-license.php

2. The Artistic License Version 2.0 - http://www.perlfoundation.org/legal/licenses/artistic-2_0.html

3. At your option - any later version of either or both of these licenses.