ref: e49d187dff43a823a6c987c5bb595d1fa52cc02f
dir: /rc/bin/lp/
#!/bin/rc
# lp - enqueues the file to be printed and starts the daemon, when necessary.
# Make changes to /sys/src/cmd/lp/lp.rc;
# changes made directly to /rc/bin/lp will be lost.
rfork en # so that environment and name space are not polluted
#
# put 'fn sigexit { rm /tmp/lpcrap; exit interrupted }' into processes that create /tmp/lpcrap.
ifs='
' # set ifs in case it is munged in user's environment
LPLIB=/sys/lib/lp # lp scripts directories and configuration file are here
LPBIN=/$cputype/bin/aux # lp specific binaries are here
LPSPOOL=$LPLIB/queue # lp queues
LPLOGDIR=$LPLIB/log # lp logs
$LPLIB/bin/lpscratch
x=$status
if(! ~ $x '') exit $x
# build /bin from the ground up
bind /$cputype/bin /bin # general compiled binaries
bind -a /rc/bin /bin # general rc scripts
# This needs to be fixed for the real thing
bind -a $LPLIB/bin /bin # lp specific rc scripts
bind -a $LPBIN /bin # lp specific compiled binaries
path=(/bin)
USAGE='usage: lp [-d printer] [-p process] [options] [files]
lp [-d printer] -q
lp [-d printer] -k jobnos
options include:
-D turn on debugging output
-H no header
-L landscape mode
-M<mach> print on machine <mach>
-Q put task only into the queue
-R restart printer daemon
-c<n> make <n> copies
-f<font.size> specify font and size
-i<src> take media from <src> input bin
-l<n> print <n> lines per logical page
-m<n> magnify <n> times
-n<n> print <n> logical pages per physical page
-o<i-j,k> print only pages i-j and k
-r reverse pages
-u<userid> print as <userid>
-x<n> x page offset in inches
-y<n> y page offset in inches
'
# umask 000 # this doesn't work in plan 9
if (~ $#sysname 0)
THIS_HOST=plan9
if not {
THIS_HOST=`{ndb/query sys $sysname dom}
if(~ $#THIS_HOST 0)
THIS_HOST=$sysname
}
LPMACHID=$THIS_HOST
THIS_USERID=$user
LPUSERID=$THIS_USERID
LPLOC=''
# Set default printer to be output device
if (~ $#LPDEST 0 && test -f $LPLIB/defdevice) LPDEST=`{cat $LPLIB/defdevice}
# option parameters
COPIES=1
FONT=''
IBIN=''
KILLFLAG=0
LAND=''
LINES=''
LPQ=0
MAG=''
NOHEAD=''
NPAG=''
OLIST=''
POINT=''
RESET=''
REVERSE=''
QONLY=''
TRAY=''
XOFF=''
YOFF=''
# Process options
flagfmt='D,H,L,Q,R,r,q,M mach,c copies,d printer,f font.size,i src,k jobnos,l lines,m magnify,n lpages,o pages,p proc,u userid,x offset,y offset'
argv0=lp
if(! ifs=() eval `{aux/getflags $*}) {
echo $USAGE >[1=2]
exit usage
}
if(~ $flagd '?'){
awk 'BEGIN {print "device location host class"}
/^[^#]/ { printf "%-12s %-9s %-22s %s\n", $1, $2, $3, $6 }' $LPLIB/devices
exit
}
if(~ $flagp '?'){
ls $LPLIB/process
exit
}
if (! ~ $#flagD 0) { DEBUG=1; flag x + }; if not { DEBUG=''; flag x - }
if (! ~ $#flagH 0) NOHEAD=1
if (! ~ $#flagL 0) LAND=1
if (! ~ $#flagM 0 && ~ $LPUSERID daemon) LPMACHID=$flagM
if (! ~ $#flagQ 0) QONLY=1
if (! ~ $#flagR 0) RESET=1
if (! ~ $#flagc 0) COPIES=$flagc
if(! ~ $#flagd 0) LPDEST=$flagd
if (! ~ $#flagf 0) eval `{echo $flagf | sed -e 's/([^.]*)\.([0-9.]*)/FONT=\1;POINT=\2;/'}
if (! ~ $#flagi 0) IBIN=$flagi
if (! ~ $#flagk 0) KILLFLAG=1
if (! ~ $#flagl 0) LINES=$flagl
if (! ~ $#flagm 0) MAG=$flagm
if (! ~ $#flagn 0) NPAG=$flagn
if (! ~ $#flago 0) OLIST=-o^$flago
if (! ~ $#flagp 0) LPPROC=$flagp
if (! ~ $#flagq 0) LPQ=1
if (! ~ $#flagr 0) REVERSE=1
if (! ~ $#flagu 0) LPUSERID=$flagu
if (! ~ $#flagx 0) XOFF=$flagx
if (! ~ $#flagy 0) YOFF=$flagy
if (~ $#LPDEST 0) {
echo 'Set environment variable LPDEST or use the
''-d printer'' option to set the destination.' >[1=2]
exit 'LPDEST not set'
}
if (~ $LPDEST */*) { # handles MHCC destinations like mh/lino
LPLOC=`{echo $LPDEST|sed 's/^(.*)\/(.*)/\1/'}
LPDEST=`{echo $LPDEST|sed 's/^(.*)\/(.*)/\2/'}
}
# look up device, get info
LPDLINE=`{grep '^'$LPDEST'[ ]' $LPLIB/devices}
if (! ~ $status '') {
echo 'device '$LPDEST' is not in '$LPLIB'/devices' >[1=2]
exit 'LPDEST is bad'
}
LOC=$LPDLINE(2)
DEST_HOST=$LPDLINE(3)
OUTDEV=$LPDLINE(4)
SPEED=$LPDLINE(5)
LPCLASS=$LPDLINE(6)
if (~ $#LPPROC 0) LPPROC=$LPDLINE(7)
SPOOLER=$LPDLINE(8)
STAT=$LPDLINE(9)
KILL=$LPDLINE(10)
DAEMON=$LPDLINE(11)
SCHED=$LPDLINE(12)
if (~ $LPCLASS *nohead*)
NOHEAD=1
if (~ $LPCLASS *duplex*)
DUPLEX=1
if (~ $#SCHED 0) SCHED=FIFO # everyone uses FIFO
if (~ $KILLFLAG 1)
switch ($KILL) {
case -; echo kill option not available on $LPDEST >[1=2]
exit 'kill n/a'
case *; bind -b $LPLIB/kill /bin
exec $KILL $*
exit 'kill command '"$KILL"' not found'
}
if (~ $LPQ 1)
switch ($STAT) {
case -; echo queue status option not available on $LPDEST >[1=2]
exit 'stat option not available'
case *; bind -b $LPLIB/stat /bin
exec $STAT $* < /dev/null
exit 'stat command '"$STAT"' not found'
}
DATE=`{date}
LPLOG=$LPLOGDIR/$LPDEST
if (! test -e $LPLOG) {
>$LPLOG
chmod +rwa $LPLOG >[2]/dev/null
}
if (~ $RESET '') {
switch ($SPOOLER) {
case -; echo spooler does not exist for $LPDEST >[1=2]
exit 'no spooler'
case *; bind -b $LPLIB/spooler /bin
if (~ $#* 0) $SPOOLER
if not $SPOOLER $*
}
}
if not {
echo restarting daemon for printer $LPDEST >[1=2]
UNLOCK $LPSPOOL/$LPDEST
sleep 5
}
# run daemon
if (~ $QONLY '') {
if (! ~ $DAEMON -) {
bind -b $LPLIB/daemon /bin
$DAEMON $* >>$LPLOG >[2=1] &
}
}
exit ''