#!/usr/bin/perl -P
;#
;#  @(#)from.faces 1.4 91/11/19
;#
;#  Copyright (c) Steve Kinzler - April 1991.
;#
;#  Permission is given to distribute these sources, as long as the
;#  copyright messages are not removed, and no monies are exchanged.
;#
;#  No responsibility is taken for any errors on inaccuracies inherent
;#  either to the comments or the code of this program, but if reported
;#  to me, then an attempt will be made to fix them.

;# Uncomment this line if you are running a version of faces earlier
;# than version 1.5.0:
;# $oldformat = 1;

$cols = 7;

;# from.faces - alternate, experimental faces script to monitor one's mail
;#		spool file
;# Steve Kinzler, kinzler@cs.indiana.edu, 28 Jan 1991

$format = $oldformat ? "%-20s%-20s%-10s%-10s%-10s%-10s\n" :
		       "%s\t%s\t%s\t%s\t%s\t%s\n";

$ENV{'MAIL'} = "/var/spool/mail/$ENV{'USER'}" unless defined $ENV{'MAIL'};

print("Cols=1 Rows=1\nNOMAIL\n"), exit unless -s $ENV{'MAIL'};

%cal = ('Jan',   0, 'Feb',  31, 'Mar',  59, 'Apr',  90, 'May', 120,
	'Jun', 151, 'Jul', 181, 'Aug', 212, 'Sep', 243, 'Oct', 273,
	'Nov', 304, 'Dec', 334);

($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime time;
$now = int((1900 + $year - 1) * 365.25) + $yday + ($hour * 60 + $min) / 1440;

open(MAIL, $ENV{'MAIL'});

while (<MAIL>) {
	if (/^From /) {
		%hdr = ();
		$host = '';

		DO:
			/^(\S*)\s*(.*)/;
			$f = $1; $v = $2;
			if ($f =~ /./) {
				$field = $f;
				$field =~ y/A-Z/a-z/;
				$hdr{$field} = $v;
			} else {
				$hdr{$field} .= " $v";
			}
			$_ = <MAIL>;
		goto DO unless eof || /^$/;

		($from, $wday, $mon, $mday, $time, $year) =
		    split(/\s+/, $hdr{'from'});

#include "/usr/local/faces/lib/allrc";

		$from =~ s/.*<([^>]*)>.*/\1/;
		$from =~ s/\(.*\)//;
		$from =~ s/\s.*//;

		while ($from =~ /^@([^:]*):([^:].*)/) {
			$from = $2; $host = $1;
		}
		while ($from =~ /(.*)[%@](.*)/) {
			$from = $1; $host = $2;
		}
		while ($from =~ /([^!]*)!(.*)/) {
			$from = $2; $host = $1;
			$host .= '.uucp' unless $host =~ /\./;
		}
		while ($from =~ /([^:]*)::(.*)/) {
			$from = $2; $host = $1;
		}

		$from =~ s/^(.{0,20}).*/\1/ if $oldformat;
		$from =~ y/A-Z/a-z/ unless $from =~ /[a-z]/;
		$from =~ s/^postmaster$/postmaster/i;
		$wind = $from;
		$wind =~ s/^(.{0,10}).*/\1/ if $oldformat;

		if ($oldformat) {
			$host =~ s/^[^\.]*.// while length $host > 20;
		}
		$host =~ y/A-Z/a-z/;

		$day = $cal{$mon};
		if ($year % 4 == 0 && $day > 31) { $day++; }
		$time =~ /(.*):(.*):.*/;
		$then = int(($year - 1) * 365.25) +
			$day + $mday - 1 + ($1 * 60 + $2) / 1440;

		$days = int($now - $then);
		$hrs  = ($now - $then - $days) * 24;
		$mins = int(($hrs - int($hrs)) * 60);
		$hrs  = int($hrs);

		$hrs  = "0$hrs"  if  $hrs < 10;
		$mins = "0$mins" if $mins < 10;
		$icon = "$days,$hrs:$mins";
		$icon =~ s/^(.{0,10}).*/\1/ if $oldformat;

		$n++;
		$output .= sprintf($format, $from, $host, $wind, '', $icon, '');
	}
}

close(MAIL);

printf("Cols=1 Rows=1\nNOMAIL\n"), exit if $n <= 0;

printf $format, $from, $host, $wind, $n, '', '';
printf "Cols=%d Rows=%d\n", ($n > $cols) ? $cols : $n, ($n - 1) / $cols + 1;
print $output;