# This file belongs to TLPM v2.19, TeX Live Package Manager
# Public Domain, P.Jackowski@gust.org.pl

# list [-pfe] <mask>
# list packages matching <mask>

sub list
{
      my ($arg,$reg,$mask);
      my $pkges = $source_pkges;
      local $tl_target_new;
      local $list_method = \&list_packages;
      local $reg_method  = \&string2reg;
      local $read_method = \&read_source;
      while(defined($arg = shift))
      {
             $arg eq ''                     and next
          or &no_opt($arg)                  and $mask = $arg
          or &is_opt($arg,'f','files')      and $list_method = \&list_files
          or &is_opt($arg,'p','packages')   and $list_method = \&list_packages
          or &is_opt($arg,'e','expression') and $reg_method  = \&string2preg
          or &is_opt($arg,'d','directory')  and $read_method = \&read_target
                                            and $pkges = $target_pkges
                                            and do {$tl_target_new = shift;1}
          or &is_opt($arg,'h','help')       and return $heeelp -> ('list')
          or &rem_opt($arg) and return $error{'wrong_opt'} -> ($arg,'list --help');
      }
      eval '$reg = $reg_method -> ($mask)';
      if($@){return $error{'wrong_reg'} -> ($mask)}
      return if $read_method -> ();
      return $list_method -> ($reg,$pkges);
}

sub list_packages
{
      my ($reg,$pkges) = @_;
      my $count = 0;
      $mess -> (grep {/$reg/ and ++$count} &get_pkg_all($pkges));
      $mess -> ("\n");
      if($tlpm_redir < 2)
      {
            $message -> (&one_or_more($count,'matching package','matching packages'));
      }
}

sub list_files
{
      my ($reg,$pkges) = @_;
      my $count = 0;
      $mess -> (grep {/$reg/ and ++$count} &get_file_all($pkges));
      $mess -> ("\n");
      if($tlpm_redir < 2)
      {
            $message -> (&one_or_more($count,'matching file','matching files'));
      }
}

1;