#!/usr/bin/perl -w
#
# Copyright (C) 2009 Edwin Groothuis. All rights reserved.
#
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``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 AUTHORS OR CONTRIBUTORS 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.
#
# $FreeBSD$
#
use strict;
use Data::Dumper;
if ($#ARGV < 0) {
print <<EOF;
Usage: $0 -c <term1> <term2>
Compares the entries in the termcap.src for <term1> and <term2> and
print the keys and definitions on the screen. This can be used to reduce
the size of two similar termcap entries with the "tc" option.
Usage: $0 -l [term]
Show all lengths or the ones for terminals matching [term]
Usage: $0 -p <term>
Print all information about <term>
Usage: $0 -r <term>
Print all relations from and to <term>
EOF
exit(0);
}
my $command = $ARGV[0];
my $tca = $ARGV[1];
my $tcb = $ARGV[2];
open(FIN, "termcap.src");
my @lines = <FIN>;
chomp(@lines);
close(FIN);
my %tcs = ();
my $tc = "";
foreach my $l (@lines) {
next if ($l =~ /^#/);
next if ($l eq "");
$tc .= $l;
next if ($l =~ /\\$/);
$tc =~ s/:\\\s+:/:/g;
my @a = split(/:/, $tc);
next if ($#a < 0);
my @b = split(/\|/, $a[0]);
if ($#b >= 0) {
$tcs{$b[0]} = $tc;
} else {
$tcs{$a[0]} = $tc;
}
if (length($tc) - length($a[0]) > 1023) {
print "$a[0] has a length of ", length($tc) - length($a[0]), "\n";
exit(0);
}
$tc = "";
}
my %tc = ();
my %keys = ();
my %len = ();
my %refs = ();
for my $tcs (keys(%tcs)) {
$len{$tcs} = 0;
my $first = 0;
foreach my $tc (split(/:/, $tcs{$tcs})) {
if ($first++ == 0) {
foreach my $ref (split(/\|/, $tc)) {
$refs{$ref} = $tcs;
}
next;
}
next if ($tc =~ /^\\/);
$tc{$tcs}{$tc} = 0 if (!defined $tc{$tcs}{$tc});
$tc{$tcs}{$tc}++;
$len{$tcs} += length($tc) + 1;
$keys{$tc} = 0;
}
}
$tca = $refs{$tca} if (defined $tca && defined $refs{$tca});
$tcb = $refs{$tcb} if (defined $tcb && defined $refs{$tca});
die "Cannot find definitions for $tca" if (defined $tca && !defined $tcs{$tca});
die "Cannot find definitions for $tcb" if (defined $tcb && !defined $tcs{$tcb});
if ($command eq "-c") {
foreach my $key (sort(keys(%keys))) {
next if (!defined $tc{$tca}{$key} && !defined $tc{$tcb}{$key});
printf("%-3s %-3s %s\n",
defined $tc{$tca}{$key} ? "+" : "",
defined $tc{$tcb}{$key} ? "+" : "",
$key,
);
}
print "$len{$tca} - $len{$tcb}\n";
}
if ($command eq "-l") {
foreach my $tcs (sort(keys(%tcs))) {
next if (defined $tca && $tcs !~ /$tca/);
printf("%4d %s\n", $len{$tcs}, $tcs);
}
}
if ($command eq "-p") {
printf("%s (%d bytes)\n", $tca, $len{$tca});
foreach my $key (sort(keys(%keys))) {
next if (!defined $tc{$tca}{$key});
printf("%s\n", $key);
}
}
if ($command eq "-r") {
foreach my $key (keys(%{$tc{$tca}})) {
next if ($key !~ /^tc=/);
$key =~ s/tc=//;
print "Links to:\t$key\n";
}
my $first = 0;
foreach my $ref (sort(keys(%refs))) {
next if ($refs{$ref} ne $tca);
foreach my $tc (sort(keys(%tcs))) {
if (defined $tc{$tc}{"tc=$ref"}) {
if ($first++ == 0) {
print "Links from:\t";
} else {
print "\t\t";
}
print "$ref -> $tc\n";
}
}
}
}
