plan9fox/rc/bin/window

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#!/bin/rc
# window [many options] cmd [arg...] - create new window and run cmd in it
rfork e
fn checkwsys{
if(~ $wsys ''){
echo 'window: $wsys not defined'
exit bad
}
}
# original version used mount to do the work
fn oldway{
switch($#*){
case 0 1
echo usage: window '''minx miny maxx maxy''' cmd args ...
exit usage
}
checkwsys
dir = /mnt/wsys
srv = $wsys
rfork ne
{
if(x=`{cat /dev/ppid}; mount $srv $dir N`{{echo $x $1 }| sed 's/^ //g;s/ +/,/g'}){
shift
bind -b $dir /dev
echo -n `{basename $1} > /dev/label >[2] /dev/null
exec $* < /dev/cons > /dev/cons >[2] /dev/cons
}
}&
}
# if argument is of form '100 100 200 200' or '100,100,200,200' use old way
if(~ $1 *[0-9][' ,'][0-9]*){
oldway $*
exit
}
# geometry parameters are:
# -r 0 0 100 100
# -dx n
# -dy n
# -minx n
# -miny n
# -maxx n
# -maxy n
# where n can be a number, to set the value, or +number or -number to change it
# find wctl file
fn getwctl{
if(~ $wctl ''){
if(test -f /dev/wctl) echo /dev/wctl
if not if(test -f /mnt/term/dev/wctl) echo /mnt/term/dev/wctl
if not if(~ $service cpu) echo /mnt/term/srv/riowctl.*.*
if not {
echo window: '$wctl' not defined >[1=2]
exit usage
}
}
if not echo $wctl
}
# use mount to make local window
if(~ $1 -m){
shift
checkwsys
dir = /mnt/wsys
srv = $wsys
rfork ne
{
unmount /mnt/acme /dev >[2]/dev/null
if(mount $srv $dir 'new -pid '^`{cat /dev/ppid}^' '$"*){
bind -b $dir /dev
# toss geometry parameters to find command
while(~ $1 -*)
switch($1){
case -dx -dy -minx -miny -maxx -maxy
shift 2
case -r
shift 5
case -scroll
shift
case -noscroll
shift
case -hide
shift
}
if(~ $#* 0) cmd = rc
if not cmd = $*
echo -n `{basename $cmd(1)} > /dev/label >[2] /dev/null
exec $cmd < /dev/cons > /dev/cons >[2] /dev/cons
}
}&
}
if not echo new -cd `{pwd} $* >> `{getwctl}