#!/bin/bash
# A script to print all sheets of a hierarchical gschem schematic to PDF
#################################################-<(kmk)>- 2010 ########

if [ $# -eq 0 ]    # If script invoked with no command-line args
then
  echo "Collects all sub sheets of a hierarchical design and prints them to multi"
  echo "page postscript and PDF. Schematics are sorted according to page attribute."
  echo "Uses awk, psmerge, ps2pdf and optionally evince"
  echo "Usage: `basename $0` [-p][-V] foobar.sch"
  echo "-V     launch viewer on produced output"
  exit
fi  

STARTVIEWER=0
while getopts ":V" Option
do
  case $Option in
    V     ) echo "will start PDF viewer "; STARTVIEWER=1 ;;
    *     ) echo "Unknown option: "$Option ;;   # Default.
  esac
done
shift $(($OPTIND - 1))   # go to next argument

###########
# Some shell variables

SCHFILE=`basename $1`
SCHEMDIR=`dirname $1`
WORKINGDIR=$PWD
PRINTSCM="/usr/local/share/gEDA/scheme/print.scm"
PREFIX="/tmp/out_schaltplandruck"

OUTPDF=`basename $SCHFILE .sch`"_schematic_"`date +%F`".pdf"
OUTPS=`basename $SCHFILE .sch`"_schematic_"`date +%F`".ps"

##########
# This function is called for every subsheet 

function subsheet {
  # Check for source attributes sort and drop duplicates
  SUBSCH=`awk 'BEGIN { FS = "=" } ; $1 == "source" { print $2 }' $1 | sort -u`
  for i in $SUBSCH
    do
      PAGE=`awk 'BEGIN { FS = "=" } ; $1 == "page" { print $2 }' $i`
      echo "found sub sheet: "$i" with page number "$PAGE
      # syntesize a name with padded pagenumber for correct sorting downstream
      OUT=$PREFIX"_"`printf "%03d" $PAGE`"_"$i".ps"
      # print schematic using the scheme script provided by gnetlist
      gschem -p -o $OUT -s $PRINTSCM $i
      subsheet $i
    done
}


###########
# main block

cd $SCHEMDIR

# print the top schematic
gschem -p -o $PREFIX"_001.ps" -s $PRINTSCM $SCHFILE

# recursively descend into subsheets
subsheet $SCHFILE
 
## Combine to a single document
psmerge -o$PREFIX"merged.ps" $PREFIX"_"*".ps"
echo $PREFIX"merged.ps nach "$OUTPS" kopieren" 
cp $PREFIX"merged.ps" $WORKINGDIR/$OUTPS

## Convert to PDF
ps2pdf $PREFIX"merged.ps" $WORKINGDIR/$OUTPDF

## optionally start viewer
if [ "$STARTVIEWER" = "1" ]
then
  evince $WORKINGDIR/$OUTPDF
fi

# remove temporary files
rm $PREFIX"_"*".ps"
rm /tmp/gschem.save*.sch