wok view syslinux/stuff/tools/keytab-lilo.pl @ rev 25096

created recipe for wordgrinder
author Hans-G?nter Theisgen
date Sat Jun 18 15:13:12 2022 +0100 (2022-06-18)
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children
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1 #!/usr/bin/perl
2 # --------------------------------------------------------------------------
3 # This program was taken from the LILO-20 distribution; only this header
4 # was added.
5 #
6 # LILO program code, documentation and auxiliary programs are
7 # Copyright 1992-1997 Werner Almesberger.
8 # All rights reserved.
9 #
10 # Redistribution and use in source and binary forms of parts of or the
11 # whole original or derived work are permitted provided that the
12 # original work is properly attributed to the author. The name of the
13 # author may not be used to endorse or promote products derived from
14 # this software without specific prior written permission. This work
15 # is provided "as is" and without any express or implied warranties.
16 # --------------------------------------------------------------------------
17
18 eval { use bytes; }; eval { binmode STDOUT; };
19
20 $DEFAULT_PATH = "/usr/lib/kbd/keytables";
21 $DEFAULT_MAP = "us";
22 $DEFAULT_EXT = ".map";
23
24 sub usage
25 {
26 print STDERR
27 "usage: $0 [ -p old_code=new_code ] ...\n".
28 (" "x(8+length $0))."[path]default_layout[.map] ] ".
29 "[path]kbd_layout[.map]\n";
30 exit 1;
31 }
32
33
34 while ($ARGV[0] eq "-p") {
35 shift(@ARGV);
36 &usage unless $ARGV[0] =~ /=/;
37 $table[eval($`)] = eval($');
38 shift(@ARGV);
39 }
40 &usage unless defined $ARGV[0];
41 load_map("def",defined $ARGV[1] ? $ARGV[0] : undef);
42 load_map("kbd",defined $ARGV[1] ? $ARGV[1] : $ARGV[0]);
43 &build_table("plain","shift","ctrl","altgr","shift_ctrl",
44 "altgr_ctrl","alt","shift_alt","ctrl_alt");
45 for ($i = 0; $i < 256; $i++) {
46 printf("%c",$table[$i] ? $table[$i] : $i) || die "print: $!";
47 }
48 close STDOUT || die "close: $!";
49
50
51 sub load_map
52 {
53 local ($pfx,$map) = @_;
54 local ($empty,$current);
55
56 $map = $DEFAULT_MAP unless defined $map;
57 $map = $DEFAULT_PATH."/".$map unless $map =~ m|/|;
58 $map .= $DEFAULT_EXT unless $map =~ m|/[^/]+\.[^/]+$|;
59 if (!open(FILE,"loadkeys -m $map |")) {
60 print STDERR "loadkeys -m $map: $!\n";
61 exit 1;
62 }
63 undef $current;
64 $empty = 1;
65 while (<FILE>) {
66 chop;
67 if (/^(static\s+)?u_short\s+(\S+)_map\[\S+\]\s+=\s+{\s*$/) {
68 die "active at beginning of map" if defined $current;
69 $current = $pfx.":".$2;
70 next;
71 }
72 undef $current if /^};\s*$/;
73 next unless defined $current;
74 s/\s//g;
75 $map{$current} .= $_;
76 $empty = 0;
77 }
78 close FILE;
79 return unless $empty;
80 print STDERR "Keymap is empty\n";
81 exit 1;
82 }
83
84
85 sub build_table
86 {
87 local (@maps) = @_;
88 local (@tmp);
89
90 $set = 0;
91 for $map (@maps) {
92 $code = $set;
93 for (split(",",$map{"def:".$map})) {
94 die "bad map entry $_ (def, map $map)" unless /^0x\S\S(\S\S)$/;
95 $tmp[$code] = hex $1 unless $tmp[$code];
96 $code++;
97 }
98 $set += 256;
99 }
100 $set = 0;
101 for $map (@maps) {
102 $code = $set;
103 for (split(",",$map{"kbd:".$map})) {
104 die "bad map entry $_ (kbd, map $map)" unless /^0x\S\S(\S\S)$/;
105 $table[$tmp[$code]] = hex $1 unless $table[$tmp[$code]];
106 $code++;
107 }
108 $set += 256;
109 }
110 $table[0] = 0;
111 }