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Packlist (3)
  • >> Packlist (3) ( Solaris man: Библиотечные вызовы )
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    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 <[email protected]>
    
    
    
    


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