Re: hptools and magicfilter

["Jens B. Jorgensen" <jjorgens@bdsinc.com>]

Mario Filipe wrote:
> 
> On Wed, 26 Nov 1997, Brian K Servis wrote:
> 
> OK
> 
> I tried this but i don't think i have it right so i'll send the files in
> question for you to have a look, if that's ok with you :
> 
> /etc/printcap
> #econo mode
> lpecono|HP Deskjet 660C econo:\
>         :lp=/dev/printer:sd=/var/spool/lpd/hpdj660c:\
>         :sh:pw#80:pl#72:px#1440:mx#0:\
>         :if=/usr/sbin/dj550ce-filter:\
>         :af=/var/log/lp-acct:lf=/var/log/lp-errs:
> # letter quality
> lp|dj|hpdj660c|HP Deskjet 660C:\
>         :lp=/dev/printer:sd=/var/spool/lpd/hpdj660c:\
>         :sh:pw#80:pl#72:px#1440:mx#0:\
>         :if=/usr/sbin/dj550c-filter:\
>         :af=/var/log/lp-acct:lf=/var/log/lp-errs:
> 
> /usr/sbin/dj550ce-filter
> #! /usr/sbin/magicfilter
> #
> # Magic filter setup file for HP DeskJet 500 series color printers with
> # both black and CMY cartridges installed
> #
> # This file has been automatically adapted to your system.
> #
> 
> # PostScript
> 0       %!              filter  /usr/sbin/econogsc $FILE
> #0      \004%!          filter  /usr/bin/gs  -q -dSAFER -dNOPAUSE -r300
> -sDEVICE
> =cdj550 -sOutputFile=- -
> 
> # TeX DVI
> [...]
> 
> /usr/sbin/econogsc
> #!/bin/bash
> # called as: econogsc <psfile>
> # send hpset hp escape codes to a tmp file
> /home/mjnf/hptools_1.2.3/hpset -c econo >! /tmp/prt.$$
> # append the ghostscript hp escape codes to that tmp file
> /bin/cat $1 | /usr/bin/gs -q -dSAFER -dNOPAUSE -r300 -sDEVICE=cdj550
> -sOutputFile=- - >> /tmp/prt.$$
> # cat the tmp file to stdout
> /bin/cat /tmp/prt.$$
> # clean up
> /bin/rm /tmp/prt.$$
> 
> /usr/sbin/dj550c-filter
> #! /usr/sbin/magicfilter
> #
> # Magic filter setup file for HP DeskJet 500 series color printers with
> # both black and CMY cartridges installed
> #
> # This file has been automatically adapted to your system.
> #
> 
> # PostScript
> 0       %!              filter  /usr/bin/gs  -q -dSAFER -dNOPAUSE -r300
> -sDEVICE
> =cdj550 -sOutputFile=- -
> 0       \004%!          filter  /usr/bin/gs  -q -dSAFER -dNOPAUSE -r300
> -sDEVICE
> =cdj550 -sOutputFile=- -
> 
> when i do ls | /usr/sbin/dj550c[e]-filter I get the very same file.
> 
> What did i do wrong ?

No problem. First of all, the reason 'ls | /usr/sbin/dj550ce-filter' doesn't
do anything to the text is because ls doesn't output postscript, it outputs
text (which the filter doesn't do anything with).

Now, your script /usr/sbin/econogsc should only need to do this:

#!/bin/bash
# called as: econogsc
# output hpset hp escape codes to stdout
/home/mjnf/hptools_1.2.3/hpset -c econo
# now output the ghostscript hp escape codes
/usr/bin/gs -q -dSAFER -dNOPAUSE -r300 -sDEVICE=cdj550 -sOutputFile=- - 

That's it! Why create temp files? There's no need for that. Now, your filter
entry should be this:

0       %!              filter  /usr/sbin/econogsc

Again, you don't need to pass the filename. Everything is done with *pipes*.

-- 
Jens B. Jorgensen
jjorgens@bdsinc.com


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