119 lines
2.8 KiB
Bash
119 lines
2.8 KiB
Bash
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#!/bin/sh
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# $XTermId: tab0.sh,v 1.6 2022/04/25 22:49:46 tom Exp $
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# -----------------------------------------------------------------------------
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# Copyright 2019,2022 by Thomas E. Dickey
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#
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# All Rights Reserved
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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# IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
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# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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# Except as contained in this notice, the name(s) of the above copyright
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# holders shall not be used in advertising or otherwise to promote the
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# sale, use or other dealings in this Software without prior written
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# authorization.
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# -----------------------------------------------------------------------------
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# Demonstrate hard-tabs.
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: "${TABS:=tabs}"
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: "${TPUT:=tput}"
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show() {
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printf "Tabs %s:" "$1"
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read -r ignore
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p=0
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while [ "$p" -lt "$wide" ]
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do
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printf "%s+----%d" "----" "`expr 1 + \( "$p" / 10 \)`"
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p=`expr $p + 10`
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done
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printf '\n'
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p=1
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printf " "
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while [ "$p" -lt "$wide" ]
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do
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printf "%*s" "$1" "*"
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p=`expr "$p" + "$1"`
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done
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printf '\n'
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p=0
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while [ "$p" -lt "$wide" ]
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do
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printf '\t+'
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p=`expr "$p" + "$1"`
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done
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printf '\n'
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printf "...done"
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read -r ignore
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}
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# enable hard tabs, disable autowrap.
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initialize() {
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"$TPUT" "$1"
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clear
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stty tabs
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printf '\033[?7l'
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}
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setup() {
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initialize reset
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}
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# Turn hard tabs off, reenable autowrap.
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restore() {
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stty -tabs
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printf '\033[?7h'
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}
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wide=`$TPUT cols`
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# If the terminal honors VT100 RIS, try that as a "hard reset" to get the
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# power-on behavior.
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for name in rs1 rs2
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do
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value=`$TPUT $name | sed -e 's//ESC:/g'`
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case "$value" in
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*ESC:c*)
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;;
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*)
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value=
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;;
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esac
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if [ -n "$value" ]
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then
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initialize $name
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printf 'Testing after tput %s\r\n' "$name"
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show 8
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break
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fi
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done
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# The following tests use the normal "reset" behavior.
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setup
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$TABS -8
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show 8
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$TABS -4
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show 4
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# Some terminal emulators are known to be buggy, and "reset" does not get them
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# to reset the tab-stops.
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setup
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show 8
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restore
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