#!/bin/bash
#
# pdfs2djvu
#

if [ -z `which pdftoppm` -o -z `which cjb2` -o -z `which djvm` ]; then
echo
echo "Error: pdftoppm, cjb2 and djvm are needed"
echo
exit 1
fi

shopt -s extglob

OUTFILE="#0.djvu"
DEFMASK="*.pdf"
DPI=300

if [ -n "$1" ]; then
 MASK=$1
else
 MASK=$DEFMASK
fi

for PDF in $MASK; do
 if [ ! -e $PDF ]; then
  echo
  echo "Error: current directory must contain files with the mask $MASK"
  echo
  exit 1
 fi 
 echo $PDF 
 pdftoppm -r 300 -aa no $PDF $PDF
 for PBM in $PDF*.pbm; do
  echo $PBM
  cjb2 -dpi $DPI $PBM $PBM.djvu
  rm -f $PBM
 done

done

djvm -c $OUTFILE $MASK*.pbm.djvu