#!/bin/bash

# Address questions to matt silver

echo '';

# get the name of the input and output files
INFILE=${1%};
OUTFILE=${2%};

########################################################

# find the BoundingBox line
BBOX=`grep %%BoundingBox: $INFILE`; 

echo 'Found bounding box:           ' $BBOX;

########################################################

# tokenize the bounding box string
ARR=(${BBOX});

# the bad one is always the first one, I think...
BADBOUND=${ARR[1]};

echo 'Found the offending boundary: ' $BADBOUND;

# replace the undesired boundary with 0
BBOXNEW=${BBOX/$BADBOUND/0};

# find the bound that must now be adjusted
ADJBOUND=${ARR[3]};

# determine the value that this bound should have
NEWBOUND=$(($ADJBOUND - $BADBOUND));

# replace the adjusted bound with the new value
BBOXNEW=${BBOXNEW/$ADJBOUND/$NEWBOUND};

echo 'Correct bounding box:         ' $BBOXNEW;

########################################################

# generate additional line to translate image
TRANSLATE=`echo ${BADBOUND:1} '0 translate'`;

echo 'Translating by adding:        ' $TRANSLATE;

echo '';

#######################################################

# copy the contents of INFILE into OUTFILE
`cp $INFILE $OUTFILE`;

# replace the old bounding box line with the new one
sed -i "s/$BBOX/$BBOXNEW/" $OUTFILE;

# translate the image
sed -i "s/%%EndComments/%%EndComments\n\n$TRANSLATE/" $OUTFILE;
 
echo 'Done!!';