plan9fox/rc/bin/lp
Ori Bernstein 5bc9b0c3ca improve usage messages (thanks henesy)
Fix inconsistencies between programs and their usage
messages,  correct instances where information seems
to be missing or lost. This  includes missing arguments,
making usage consistent with manuals, and so on.
2020-03-10 10:09:34 -07:00

210 lines
5.1 KiB
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Executable file

#!/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 ''