#/bin/bash

# Copyright (C) 2010 LAFKON/Christoph Haag.
# ---------------------------------------------------------------------- #
# This is free software, and you may redistribute it under the GPL.
# This Software comes with absolutely no warranty.
# For details see the license: http://www.forkable.eu/utils/licenses/gpl
# ---------------------------------------------------------------------- #
# http://www.forkable.eu/generators/i-bd/i/TRUNK/separateLayers--1-00.sh
# ______________________________________________________________________ #
#
# Extract layers from an inkscape SVG files and write them to .tmp files. 
# This require an supplemental tag 'layerid'.
# ______________________________________________________________________ #

TMPDIR=tmp; rm $TMPDIR/*.layer

INCLUDE="\-\-5\-"
EXCLUDE="BASH|offset"

GRPOPEN=\<g
GRPSHUT=\</g\>
HEADEND=\</metadata\>
				DATE=`date +%y%m%d`; TIME=`date +%H%M%S`
#----------------------------------------------------------------------- #
# FOR EVERY SVG: WRITE LAYERS TO TMP FILES (ONE LAYER -> ONE TMP FILE    #
#----------------------------------------------------------------------- #
for SVG in `ls . | egrep "$INCLUDE" | egrep -v "$EXCLUDE" | grep svg`
 do TOTAL=`wc -l $SVG  | cut -d ' ' -f 1`; COUNT=1
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #
 for GRPSTART in `grep -n $GRPOPEN $SVG | cut -d ':' -f 1`
  do
   GRPEND=`cat -n $SVG | \
	   sed -n "${GRPSTART},${TOTAL}p" | \
	   grep $GRPSHUT | \
	   cut -f 1 | \
	   head -1`
   ISALAYER=`sed -n "${GRPSTART},${GRPEND}p" $SVG | \
	     grep inkscape:groupmode=\"layer\" | \
	     wc -l` 
   if [ $ISALAYER -eq 1 ]; 
    then
        COUNTGRPOPEN=`sed -n "${GRPSTART},${GRPEND}p" $SVG | \
		      grep $GRPOPEN | wc -l`
	GRPEND=`cat -n $SVG | \
		sed -n "${GRPSTART},${TOTAL}p" | \
		grep $GRPSHUT | \
		cut -f 1 | \
		head -$COUNTGRPOPEN | tail -1`
       NAME=`echo $SVG | cut -d "." -f 1`;
       UNINAME=`echo 0000${COUNT} | rev | cut -c 1-4 | rev`
       UNINAME=${NAME}_${UNINAME}
       echo $UNINAME; COUNT=`expr $COUNT + 1`
       sed -n "${GRPSTART},${GRPEND}p" $SVG > $TMPDIR/$UNINAME.layer 
   fi
  done
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #
 done
# ---------------------------------------------------------------------- #
# ADD MISSING CLOSING TAGS (=BUG)                                        #

 for LAYERFILE in `ls $TMPDIR/*.layer`
  do
     COUNTGRPOPEN=`grep $GRPOPEN $LAYERFILE | wc -l`
     COUNTGRPSHUT=`grep $GRPSHUT $LAYERFILE | wc -l`
     TEST=`expr $COUNTGRPOPEN - $COUNTGRPSHUT`
     while [ $TEST -gt 0 ]
      do
         echo $GRPSHUT >> $LAYERFILE
         TEST=`expr $TEST - 1`          
      done
  done
# --------------------------------------------------------------------- #

exit 0;