ExtUtils::Packlist - phpMan

NAME
    ExtUtils::Packlist - manage .packlist files

SYNOPSIS
       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' };

DESCRIPTION
    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.

USAGE
    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.

FUNCTIONS
    new()
        This takes an optional parameter, the name of a .packlist. If the
        file exists, it will be opened and the contents of the file will be
        read. The 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.

    read()
        This takes an optional parameter, the name of the .packlist to be
        read. If no file is specified, the .packlist specified to new() will
        be read. If the .packlist does not exist, Carp::croak will be
        called.

    write()
        This takes an optional parameter, the name of the .packlist to be
        written. If no file is specified, the .packlist specified to new()
        will be overwritten.

    validate()
        This checks that every file listed in the .packlist actually exists.
        If an argument which evaluates to true is given, any missing files
        will be removed from the internal hash. The return value is a list
        of the missing files, which will be empty if they all exist.

    packlist_file()
        This returns the name of the associated .packlist file

EXAMPLE
    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);
                 }
              }
           }
        }

AUTHOR
    Alan Burlison <Alan.Burlison AT uk.com>