ExtUtils::Packlist - manage .packlist files
use ExtUtils::Packlist;
my ($pl) = ExtUtils::Packlist->new('.packlist');
$pl->read('/an/old/.packlist');
my @missing_files = $pl->validate();
$pl->write('/a/new/.packlist');
$pl->{'/some/file/name'}++;
or
$pl->{'/some/other/file/name'} = { type => 'file',
from => '/some/file' };
ExtUtils::Packlist provides a standard way to manage .packlist files. Functions are provided to read and write .packlist files. The original .packlist format is a simple list of absolute pathnames, one per line. In addition, this package supports an extended format, where as well as a filename each line may contain a list of attributes in the form of a space separated list of key=value pairs. This is used by the installperl script to differentiate between files and links, for example.
The hash reference returned by the
new() function can be used to examine and modify the contents of the .packlist. Items may be added/deleted from the .packlist by modifying the hash. If the value associated with a hash key is a scalar, the entry written to the .packlist by any subsequent
write() will be a simple filename. If the value is a hash, the entry written will be the filename followed by the key=value pairs from the hash. Reading back the .packlist will recreate the original entries.
new() method returns a reference to a hash. This hash holds an entry for each line in the .packlist. In the case of old-style .packlists, the value associated with each key is undef. In the case of new-style .packlists, the value associated with each key is a hash containing the key=value pairs following the filename in the .packlist.
new() will be read. If the .packlist does not exist, Carp::croak will be called.
new() will be overwritten.
Here's modrm, a little utility to cleanly remove an installed module.
#!/usr/local/bin/perl -w
use strict;
use IO::Dir;
use ExtUtils::Packlist;
use ExtUtils::Installed;
sub emptydir($) {
my ($dir) = @_;
my $dh = IO::Dir->new($dir) || return(0);
my @count = $dh->read();
$dh->close();
return(@count == 2 ? 1 : 0);
}
# Find all the installed packages
print("Finding all installed modules...\n");
my $installed = ExtUtils::Installed->new();
foreach my $module (grep(!/^Perl$/, $installed->modules())) {
my $version = $installed->version($module) || "???";
print("Found module $module Version $version\n");
print("Do you want to delete $module? [n] ");
my $r = <STDIN>; chomp($r);
if ($r && $r =~ /^y/i) {
# Remove all the files
foreach my $file (sort($installed->files($module))) {
print("rm $file\n");
unlink($file);
}
my $pf = $installed->packlist($module)->packlist_file();
print("rm $pf\n");
unlink($pf);
foreach my $dir (sort($installed->directory_tree($module))) {
if (emptydir($dir)) {
print("rmdir $dir\n");
rmdir($dir);
}
}
}
}
Alan Burlison <Alan.Burlison@uk.sun.com>
If rather than formatting bugs, you encounter substantive content errors in these documents, such as mistakes in the explanations or code, please use the perlbug utility included with the Perl distribution.