1#!/bin/sh
2# $XTermId: doublechars.sh,v 1.26 2022/04/25 23:25:41 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# Illustrate the use of double-size characters by drawing successive lines in
35# the commonly used video attributes.
36#
37# Use the -w option to force the output to wrap.  It will look ugly, because
38# the double-high lines will be split.
39
40ESC=""
41CSI="${ESC}["
42CMD='/bin/echo'
43OPT='-n'
44SUF=''
45: "${TMPDIR=/tmp}"
46TMP=`(mktemp "$TMPDIR/xterm.XXXXXXXX") 2>/dev/null` || TMP="$TMPDIR/xterm$$"
47eval '$CMD $OPT >$TMP || echo fail >$TMP' 2>/dev/null
48{ test ! -f "$TMP" || test -s "$TMP"; } &&
49for verb in "printf" "print" ; do
50    rm -f "$TMP"
51    eval '$verb "\c" >$TMP || echo fail >$TMP' 2>/dev/null
52    if test -f "$TMP" ; then
53	if test ! -s "$TMP" ; then
54	    CMD="$verb"
55	    OPT=
56	    SUF='\c'
57	    break
58	fi
59    fi
60done
61rm -f "$TMP"
62
63ITAL=no
64SAVE=yes
65WRAP=no
66if test $# != 0 ; then
67    while test $# != 0
68    do
69    	case $1 in
70	-i)	ITAL=yes ;;
71	-n)	SAVE=no ;;
72	-w)	WRAP=yes ;;
73	*)
74		echo "usage: $0 [-i] [-n] [-w]"
75		exit 1
76	esac
77	shift
78    done
79fi
80
81if test $SAVE = yes ; then
82    exec </dev/tty
83    old=`stty -g`
84    stty raw -echo min 0  time 5
85
86    $CMD $OPT "${CSI}18t${SUF}" > /dev/tty
87    IFS=';' read -r junk high wide
88
89    stty $old
90
91    wide=`echo "$wide"|sed -e 's/t.*//'`
92    original=${CSI}8\;${high}\;${wide}t${SUF}
93
94    trap '$CMD $OPT "$original" >/dev/tty; exit 1' 1 2 3 15
95    trap '$CMD $OPT "$original" >/dev/tty' 0
96
97fi
98
99if test $WRAP = yes ; then
100	# turn on wrapping and force the screen to 80 columns
101	$CMD $OPT "${CSI}?7h" >/dev/tty
102	$CMD $OPT "${CSI}?40l" >/dev/tty
103else
104	# force the screen to 132 columns
105	$CMD $OPT "${CSI}?40h" >/dev/tty
106	$CMD $OPT "${CSI}?3h" >/dev/tty
107fi
108
109for SGR in 0 1 4 5 7
110do
111	$CMD $OPT "${CSI}0;${SGR}m" >/dev/tty
112	test "$ITAL" = yes && $CMD $OPT "${CSI}3m" >/dev/tty
113	for DBL in 5 3 4 6 5
114	do
115		$CMD $OPT "${ESC}#${DBL}" >/dev/tty
116		echo "The quick brown fox jumps over the lazy dog" >/dev/tty
117	done
118	echo
119done
120$CMD $OPT "${CSI}0m" >/dev/tty
121