sync code with last improvements from OpenBSD
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commit
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109
app/xterm/vttests/resize.sh
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109
app/xterm/vttests/resize.sh
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#!/bin/sh
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# $XTermId: resize.sh,v 1.25 2022/04/25 08:19:38 tom Exp $
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# -----------------------------------------------------------------------------
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# this file is part of xterm
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#
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# Copyright 1999-2021,2022 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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# Obtain the current screen size, then resize the terminal to the nominal
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# screen width/height, and restore the size.
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ESC=""
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CSI="${ESC}["
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CMD='/bin/echo'
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OPT='-n'
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SUF=''
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: "${TMPDIR=/tmp}"
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TMP=`(mktemp "$TMPDIR/xterm.XXXXXXXX") 2>/dev/null` || TMP="$TMPDIR/xterm$$"
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eval '$CMD $OPT >$TMP || echo fail >$TMP' 2>/dev/null
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{ test ! -f "$TMP" || test -s "$TMP"; } &&
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for verb in "printf" "print" ; do
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rm -f "$TMP"
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eval '$verb "\c" >$TMP || echo fail >$TMP' 2>/dev/null
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if test -f "$TMP" ; then
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if test ! -s "$TMP" ; then
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CMD="$verb"
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OPT=
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SUF='\c'
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break
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fi
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fi
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done
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rm -f "$TMP"
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exec </dev/tty
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old=`stty -g`
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stty raw -echo min 0 time 5
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$CMD $OPT "${CSI}18t${SUF}" > /dev/tty
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IFS=';' read -r junk high wide
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$CMD $OPT "${CSI}19t${SUF}" > /dev/tty
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IFS=';' read -r junk maxhigh maxwide
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stty $old
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wide=`echo "$wide"|sed -e 's/t.*//'`
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maxwide=`echo "$maxwide"|sed -e 's/t.*//'`
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original=${CSI}8\;${high}\;${wide}t${SUF}
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test "$maxwide" = 0 && maxwide=`expr "$wide" \* 2`
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test "$maxhigh" = 0 && maxhigh=`expr "$high" \* 2`
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trap '$CMD $OPT "$original" >/dev/tty; exit 1' 1 2 3 15
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trap '$CMD $OPT "$original" >/dev/tty' 0
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w=$wide
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h=$high
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a=1
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while true
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do
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# sleep 1
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echo "resizing to $h by $w"
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$CMD $OPT "${CSI}8;${h};${w}t" >/dev/tty
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if test $a = 1 ; then
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if test "$w" = "$maxwide" ; then
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h=`expr "$h" + "$a"`
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if test "$h" = "$maxhigh" ; then
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a=-1
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fi
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else
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w=`expr "$w" + "$a"`
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fi
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else
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if test "$w" = "$wide" ; then
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h=`expr "$h" + "$a"`
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if test "$h" = "$high" ; then
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a=1
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fi
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else
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w=`expr "$w" + "$a"`
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fi
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fi
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done
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