pdfocr.sh: ocr scan pdfs to make them searchable

pdfocr.sh

#!/bin/sh
#
# This is a shell wrapper around the command line version of 
# [VelOCRaptor](http://www.velocraptor.com/), an affordable 
# OCR program for OS X.
#

if [ $# = 2 ]; then
	echo "Scanning file..."
	/Applications/VelOCRaptor.app/Contents/SharedSupport/velocraptor.rb "$1" "$2" && \
	echo "OCRed file saved as $2."

elif [ $# = 1 ]; then
	output=`mktemp -t ${1##*/}`.pdf
	echo "Scanning file..."		
	/Applications/VelOCRaptor.app/Contents/SharedSupport/velocraptor.rb "$1" "$output" && \
	mv "$1" "${1%%.pdf}_notext.pdf" && \
	mv "$output" "$1" && \
	echo "Original file saved as ${1%%.pdf}_notext.pdf"
else
	echo "Usage: ${0##*/} input.pdf <output.pdf>"
fi