query-fonts.pl revision 04b94745 
1#!/usr/bin/env perl
2# $XTermId: query-fonts.pl,v 1.8 2019/05/19 08:57:31 tom Exp $
3# -----------------------------------------------------------------------------
4# this file is part of xterm
5#
6# Copyright 2010-2018,2019 by Thomas E. Dickey
7#
8#                         All Rights Reserved
9#
10# Permission is hereby granted, free of charge, to any person obtaining a
11# copy of this software and associated documentation files (the
12# "Software"), to deal in the Software without restriction, including
13# without limitation the rights to use, copy, modify, merge, publish,
14# distribute, sublicense, and/or sell copies of the Software, and to
15# permit persons to whom the Software is furnished to do so, subject to
16# the following conditions:
17#
18# The above copyright notice and this permission notice shall be included
19# in all copies or substantial portions of the Software.
20#
21# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24# IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
25# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
26# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
27# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28#
29# Except as contained in this notice, the name(s) of the above copyright
30# holders shall not be used in advertising or otherwise to promote the
31# sale, use or other dealings in this Software without prior written
32# authorization.
33# -----------------------------------------------------------------------------
34# Test the font-query features of xterm.
35
36# TODO:
37# test relative vs absolute font numbering
38# test all font-slots
39# test selection
40# test bold / wide / widebold
41# test actual fontname vs nominal
42# extend "CSI > Ps; Ps T" to query fontname in hex
43
44use strict;
45use warnings;
46
47use Getopt::Std;
48use IO::Handle;
49
50our ( $opt_a, $opt_r, $opt_s );
51
52$Getopt::Std::STANDARD_HELP_VERSION = 1;
53&getopts('ars') || die(
54    "Usage: $0 [options]\n
55Options:\n
56  -a      test using absolute numbers
57  -r      test using relative numbers
58  -s      use ^G rather than ST
59"
60);
61
62our $ST = $opt_s ? "\007" : "\x1b\\";
63
64sub get_reply($) {
65    open TTY, "+</dev/tty" or die("Cannot open /dev/tty\n");
66    autoflush TTY 1;
67    my $old = `stty -g`;
68    system "stty raw -echo min 0 time 5";
69
70    print TTY @_;
71    my $reply = <TTY>;
72    close TTY;
73    system "stty $old";
74    if ( defined $reply ) {
75        die("^C received\n") if ( "$reply" eq "\003" );
76    }
77    return $reply;
78}
79
80sub query_font($) {
81    my $param = $_[0];
82    my $reply;
83    my $n;
84    my $st    = $opt_s ? qr/\007/ : qr/\x1b\\/;
85    my $osc   = qr/\x1b]50/;
86    my $match = qr/${osc}.*${st}/;
87
88    $reply = get_reply( "\x1b]50;?" . $param . $ST );
89
90    printf "query{%s}%*s", $param, 3 - length($param), " ";
91
92    if ( defined $reply ) {
93        printf "%2d ", length($reply);
94        if ( $reply =~ /${match}/ ) {
95
96            $reply =~ s/^${osc}//;
97            $reply =~ s/^;//;
98            $reply =~ s/${st}$//;
99        }
100        else {
101            printf "? ";
102        }
103
104        my $result = "";
105        for ( $n = 0 ; $n < length($reply) ; ) {
106            my $c = substr( $reply, $n, 1 );
107            if ( $c =~ /[[:print:]]/ ) {
108                $result .= $c;
109            }
110            else {
111                my $k = ord substr( $reply, $n, 1 );
112                if ( ord $k == 0x1b ) {
113                    $result .= "\\E";
114                }
115                elsif ( $k == 0x7f ) {
116                    $result .= "^?";
117                }
118                elsif ( $k == 32 ) {
119                    $result .= "\\s";
120                }
121                elsif ( $k < 32 ) {
122                    $result .= sprintf( "^%c", $k + 64 );
123                }
124                elsif ( $k > 128 ) {
125                    $result .= sprintf( "\\%03o", $k );
126                }
127                else {
128                    $result .= chr($k);
129                }
130            }
131            $n += 1;
132        }
133
134        printf "{%s}", $result;
135    }
136    printf "\n";
137}
138
139if ($opt_r) {
140    my $n;
141    query_font("-");
142    foreach $n ( 0 .. 5 ) {
143        query_font( sprintf "-%d", $n );
144    }
145    query_font("+");
146    foreach $n ( 0 .. 5 ) {
147        query_font( sprintf "+%d", $n );
148    }
149}
150if ($opt_a) {
151    my $n;
152    foreach $n ( 0 .. 5 ) {
153        query_font( sprintf "%d", $n );
154    }
155}
156if ( not $opt_a and not $opt_r ) {
157    query_font("");
158}
159