fonts.sh revision 4419d26b 
1#!/bin/sh
2# $XTermId: fonts.sh,v 1.17 2022/02/13 14:35:50 tom Exp $
3# -----------------------------------------------------------------------------
4# this file is part of xterm
5#
6# Copyright 1999-2021,2022 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# Demonstrate control sequence which sets relative fonts.
35
36ESC=""
37CSI="${ESC}["
38CMD='/bin/echo'
39OPT='-n'
40SUF=''
41TMP=`(mktemp) 2>/dev/null` || TMP=/tmp/xterm$$
42eval '$CMD $OPT >$TMP || echo fail >$TMP' 2>/dev/null
43{ test ! -f $TMP || test -s $TMP; } &&
44for verb in "printf" "print" ; do
45    rm -f $TMP
46    eval '$verb "\c" >$TMP || echo fail >$TMP' 2>/dev/null
47    if test -f $TMP ; then
48	if test ! -s $TMP ; then
49	    CMD="$verb"
50	    OPT=
51	    SUF='\c'
52	    break
53	fi
54    fi
55done
56rm -f $TMP
57
58exec </dev/tty
59old=`stty -g`
60stty raw -echo min 0  time 5
61
62$CMD $OPT "${ESC}]50;?${SUF}" > /dev/tty
63read original
64
65stty $old
66original="${original}${SUF}"
67
68trap '$CMD $OPT "$original" >/dev/tty; exit 1' 1 2 3 15
69trap '$CMD $OPT "$original" >/dev/tty' 0
70
71F=1
72D=1
73T=6
74while true
75do
76    $CMD $OPT "${ESC}]50;#$F${SUF}" >/dev/tty
77    sleep 1
78    if test .$D = .1 ; then
79	test $F = $T && D=-1
80    else
81	test $F = 1 && D=1
82    fi
83    F=`expr $F + $D`
84done
85