GNU/Linux |
CentOS 2.1AS(Slurm) |
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IO::Dir(3pm) |
IO: :Dir − supply object methods for directory handles
use IO::Dir; $d = new IO::Dir "."; if (defined $d) { while (defined($_ = $d->read)) { something($_); } $d->rewind; while (defined($_ = $d->read)) { something_else($_); } undef $d; } tie %dir, IO::Dir, "."; foreach (keys %dir) { print $_, " " , $dir{$_}->size,"\n"; }
The "IO::Dir" package provides two interfaces to perl’s directory reading routines.
The first
interface is an object approach.
"IO::Dir" provides an object constructor
and methods, which are just wrappers around perl’s
built in directory reading routines.
new ( [ DIRNAME ] )
"new" is the constuctor for "IO::Dir" objects. It accepts one optional argument which, if given, "new" will pass to "open"
The
following methods are wrappers for the directory related
functions built into perl (the trailing ’dir’
has been removed from the names). See the perlfunc manpage
for details of these functions.
open ( DIRNAME )
read ()
seek ( POS )
tell ()
rewind ()
close ()
"IO::Dir"
also provides a interface to reading directories via a
tied HASH . The tied HASH extends the
interface beyond just the directory reading routines by the
use of "lstat", from the
"File::stat" package,
"unlink", "rmdir" and
"utime".
tie %hash, IO: :Dir, DIRNAME
[, OPTIONS ]
The keys of the HASH will be the names of the entries in the directory. Reading a value from the hash will be the result of calling "File::stat::lstat". Deleting an element from the hash will call "unlink" providing that "DIR_UNLINK" is passed in the "OPTIONS".
Assigning to an entry in the HASH will cause the time stamps of the file to be modified. If the file does not exist then it will be created. Assigning a single integer to a HASH element will cause both the access and modification times to be changed to that value. Alternatively a reference to an array of two values can be passed. The first array element will be used to set the access time and the second element will be used to set the modification time.
the File::stat manpage
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perl5−porters@perl.org>.
Copyright (c) 1997−8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
IO::Dir(3pm) |