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#!/usr/bin/perl
#
# dselect - Debian package maintenance user interface
# mkcurkeys.pl - generate strings mapping key names to ncurses numbers
#
# Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
#
# This is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
use strict;
use warnings;
use Scalar::Util qw(looks_like_number);
die 'usage: mkcurkeys.pl <filename> <curses.h>' if @ARGV != 2;
my (%over, %base, %name);
open(my $override_fh, '<', $ARGV[0]) or die $!;
while (<$override_fh>) {
chomp;
/^#/ && next; # skip comments
/\S/ || next; # ignore blank lines
if (/^(\w+)\s+(\S.*\S)\s*$/) {
$over{$1} = $2;
$base{$1} = '';
} else {
die "cannot parse line:\n$_\n";
}
}
close($override_fh);
my $let = 'A';
for my $i (1 .. 26) {
$name{$i} = "^$let";
$base{$i} = '';
$let++;
}
open(my $header_fh, '<', $ARGV[1]) or die $!;
while (<$header_fh>) {
s/\s+$//;
m/#define KEY_(\w+)\s+\d+\s+/p || next;
my $rhs = ${^POSTMATCH};
my $k = "KEY_$1";
$base{$k} = capit($1);
$rhs =~ s/(\w)[\(\)]/$1/g;
$rhs =~ s/\w+ \((\w+)\)/$1/;
next unless $rhs =~ m{^/\* (\w[\w ]+\w) \*/$};
my $name = $1;
$name =~ s/ key$//;
if ($name =~ s/^shifted /shift /) {
next if $name =~ m/ .* .* /;
} else {
next if $name =~ m/ .* /;
}
$name{$k} = capit($name);
}
close($header_fh);
printf(<<'END') or die $!;
/*
* WARNING - THIS FILE IS GENERATED AUTOMATICALLY - DO NOT EDIT
* It is generated by mkcurkeys.pl from <curses.h>
* and keyoverride. If you want to override things try adding
* them to keyoverride.
*/
END
my ($comma);
for my $i (33 .. 126) {
my $k = $i;
my $v = pack('C', $i);
if ($v eq ',') { $comma = $k; next; }
p($k, $v);
}
## no critic (BuiltinFunctions::ProhibitReverseSortBlock)
for my $k (sort {
looks_like_number($a) ?
looks_like_number($b) ? $a <=> $b : -1
: looks_like_number($b) ? 1 :
$a cmp $b
} keys %base) {
## use critic
my $v;
$v = $base{$k};
$v = $name{$k} if defined($name{$k});
$v = $over{$k} if defined($over{$k});
next if $v eq '[elide]';
p($k, $v);
}
for my $i (1 .. 63) {
p("KEY_F($i)", "F$i");
}
p($comma, ',');
print(<<'END') or die $!;
{ -1, nullptr }
END
close(STDOUT) or die $!;
exit(0);
sub capit {
my $str = shift;
my $o = '';
$str =~ y/A-Z/a-z/;
$str = " $str";
while ($str =~ m/ (\w)/p) {
$o .= ${^PREMATCH} . ' ';
$str = $1;
$str =~ y/a-z/A-Z/;
$o .= $str;
$str = ${^POSTMATCH};
}
$str = $o . $str;
$str =~ s/^ //;
return $str;
}
sub p {
my ($k, $v) = @_;
$v =~ s/(["\\])/\\$1/g;
printf(" { %-15s \"%-20s },\n", $k . ',', $v . '"') or die $!;
}
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