Give Usage when called with no arguments

[pgp-tools.git] / gpglist / gpglist

diff --git a/gpglist/gpglist b/gpglist/gpglist
index 68e10f5f23aa6c52d097ca73d5afcb6cf590bf71..42b4dcea3d00abc04cb9d5cc6cd7dac80f461e6a 100755 (executable)
--- a/gpglist/gpglist
+++ b/gpglist/gpglist
@@ -1,21 +1,44 @@
 #!/usr/bin/perl
 
+# $Id$
+
 # small script to show in an intuitive way who signed which of your user ids
 #
 # Copyright (c) 2004 Uli Martens <uli@youam.net>
 # Copyright (c) 2005 Peter Palfrader <peter@palfrader.org>
 # All rights reserved.
 #
-# Released under a BSD style license as given in http://www.debian.org/misc/bsd.license
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 use strict;
 use warnings;
+use English;
 
 my $key=shift @ARGV;
-if ( $key eq "" ) {
-       die
+unless (defined $key) {
+       die "Usage: $PROGRAM_NAME <keyid>\n";
 }
-       
+
 open SIGS, "gpg --fixed-list-mode --with-colons --list-sigs $key 2>/dev/null |"
        or die "can't get gpg listing";
 
@@ -41,7 +64,7 @@ while (<SIGS>) {
                $rev{$uid} = "x" if ($longkey eq $1);
                $sigs{$1}->{$uid} = "R";
                next;
-       }               
+       }
        if ( m/^uat:.:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:(.*):$/ ) {
                $uid = "Photo ID";
                push @uids, $uid;
@@ -55,9 +78,13 @@ while (<SIGS>) {
        next if ( m/^(tru):/ );
        print STDERR "hi, i'm a bug. please report me to my owner";
        die "input: $_, key: $key";
-}      
+}
 close SIGS;
 
+# XXX: Add an option for this
+my $c = 0;
+@uids = grep { ! defined $rev{$uids[$c++]} } @uids;
+
 my $n = scalar @uids -1;
 for ( my $a=0; $a <= $n; $a++ ) {
        printf "|  " x ($a)
@@ -74,7 +101,7 @@ print "\n";
 
 for my $id (sort keys %ids) {
        print((defined $sigs{$ids{$id}}->{$_} ? $sigs{$ids{$id}}->{$_} : " ") . "  ") for (@uids);
-       print $ids{$id}." $id\n"; 
+       print $ids{$id}." $id\n";
 }
 for my $id (sort keys %unknownID) {
        print((defined $sigs{$id}->{$_} ? $sigs{$id}->{$_} : " ") . "  ") for (@uids);