share/examples/printing/hpdf

   1 #!/bin/sh
   2 #
   3 #  hpdf - Print DVI data on HP/PCL printer
   4 #  Installed in /usr/local/libexec/hpdf
   5
   6 PATH=/usr/local/bin:$PATH; export PATH
   7
   8 #
   9 #  Define a function to clean up our temporary files.  These exist
  10 #  in the current directory, which will be the spooling directory
  11 #  for the printer.
  12 #
  13 cleanup() {
  14    rm -f hpdf$$.dvi
  15 }
  16
  17 #
  18 #  Define a function to handle fatal errors: print the given message
  19 #  and exit 2.  Exiting with 2 tells LPD to do not try to reprint the
  20 #  job.
  21 #
  22 fatal() {
  23     echo "$@" 1>&2
  24     cleanup
  25     exit 2
  26 }
  27
  28 #
  29 #  If user removes the job, LPD will send SIGINT, so trap SIGINT
  30 #  (and a few other signals) to clean up after ourselves.
  31 #
  32 trap cleanup 1 2 15
  33
  34 #
  35 #  Make sure we are not colliding with any existing files.
  36 #
  37 cleanup
  38
  39 #
  40 #  Link the DVI input file to standard input (the file to print).
  41 #
  42 ln -s /dev/fd/0 hpdf$$.dvi || fatal "Cannot symlink /dev/fd/0"
  43
  44 #
  45 #  Make LF = CR+LF
  46 #
  47 printf "\033&k2G" || fatal "Cannot initialize printer"
  48
  49 #
  50 #  Convert and print.  Return value from dvilj2p does not seem to be
  51 #  reliable, so we ignore it.
  52 #
  53 dvilj2p -M1 -q -e- dfhp$$.dvi
  54
  55 #
  56 #  Clean up and exit
  57 #
  58 cleanup
  59 exit 0