Net::FTP::Find - Traverse a directory tree through Net::FTP
use Net::FTP::Find; my $ftp = Net::FTP::Find->new('localhost'); $ftp->login('user', 'pass'); $ftp->find(sub { ... }, '/'); $ftp->finddepth(sub { ... }, '/');
or
use Net::FTP; use Net::FTP::Find::Mixin; my $ftp = Net::FTP->new('localhost'); $ftp->login('user', 'pass'); $ftp->find(sub { ... }, '/'); $ftp->finddepth(sub { ... }, '/');
These are functions for searching through directory trees doing work on each file found similar to the File::Find. Net::FTP::Find provides two functions, "find" and "finddepth". They work similarly but have subtle differences.
$ftp->find(\&wanted, @directories); $ftp->find(\%options, @directories);
$ftp->finddepth(\&wanted, @directories); $ftp->finddepth(\%options, @directories);
The first argument to find() is either a code reference to your &wanted function, or a hash reference describing the operations to be performed for each file. The code reference is described in "The wanted function" below.
find()
&wanted
Here are the possible keys for the hash:
wanted
The value should be a code reference. This code reference is described in "The wanted function" below. The &wanted subroutine is mandatory.
bydepth
Reports the name of a directory only AFTER all its entries have been reported. Entry point finddepth() is a shortcut for specifying { bydepth => 1 } in the first argument of find().
finddepth()
{ bydepth => 1 }
no_chdir
Does not cwd() to each directory as it recurses. The wanted() function will need to be aware of this, of course. In this case, $_ will be the same as $Net::FTP::Find::name.
cwd()
wanted()
$_
$Net::FTP::Find::name
max_depth
The directories that are deeper than this value is traversed.
min_depth
The directories that are shallower than this value is traversed.
The wanted() function does whatever verifications you want on each file and directory. Note that despite its name, the wanted() function is a generic callback function, and does not tell Net::FTP::Find if a file is "wanted" or not. In fact, its return value is ignored.
The wanted function takes no arguments but rather does its work through a collection of variables.
$Net::FTP::Find::dir
The above variables have all been localized and may be changed without effecting data outside of the wanted function.
For example, when examining the file /some/path/foo.ext you will have:
$Net::FTP::Find::dir = /some/path/ $_ = foo.ext $Net::FTP::Find::name = /some/path/foo.ext
You are cwd()'d to $Net::FTP::Find::dir when the function is called, unless no_chdir was specified. Note that when changing to directories is in effect the root directory (/) is a somewhat special case inasmuch as the concatenation of $Net::FTP::Find::dir, '/' and $_ is not literally equal to $Net::FTP::Find::name. The table below summarizes all variants:
'/'
$Net::FTP::Find::name $Net::FTP::Find::dir $_ default / / . no_chdir=>0 /etc / etc /etc/x /etc x no_chdir=>1 / / / /etc / /etc /etc/x /etc /etc/x
Taku Amano <taku@toi-planning.net>
A mostly parts of the document are from File::Find.
File::Find Net::FTP::Find::Mixin
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Net::FTP::Find, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Net::FTP::Find
CPAN shell
perl -MCPAN -e shell install Net::FTP::Find
For more information on module installation, please visit the detailed CPAN module installation guide.