pdf-add-blanks
652f189c11d7master

pdf-add-blanks
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			#!/bin/bash

			function usage() {
			if [ $# -gt 0 ]; then
			echo "Error: $@"
			fi
			echo "USAGE: $(basename $0) source.pdf [destination.pdf]"
			}

			# Sanity checks
			for com in $(echo "ps2pdf pdftk pdfinfo"); do
			command -v $com > /dev/null
			if [ $? -eq 1 ]; then
			usage "Command \"$com\" not found. Please, make sure the command is available."
			exit
			fi
			done

			TMP_DIR='/tmp'


			if [ $# -lt 1 ]
			then
			usage "No arguments provided."
			exit 1
			else
			INPUT=$1
			OUTPUT=$2
			if [ -z $2 ]; then
			OUTPUT=$1
			fi

			TMP_OUTPUT=$TMP_DIR/$$_tmp
			BLANK=$TMP_DIR/$$_blank

			if [ ! -r $INPUT ]; then
			usage "File not found: $INPUT"
			exit 1
			fi

			NUM=$(pdftk $1 dump_data \| grep 'NumberOfPages' \| awk '{split($0,a,": "); print a[2]}')
			if [ -z "$NUM" ]; then
			usage "Number of pages not detected :-("
			exit 1
			fi
			PAPER_SIZE=$(pdfinfo $INPUT \| grep '^Page size:' \| cut -d ':' -f 2- \| cut -d '(' -f 2 \| cut -d ')' -f 1 \| tr '[A-Z]' '[a-z]')
			if [ -z "$PAPER_SIZE" ]; then
			echo "Defaulting to A4 paper size..."
			PAPER_SIZE="a4"
			fi

			COMMSTR=''
			for i in $(eval echo {1..$NUM}); do
			COMMSTR="$COMMSTR A$i B1"
			done

			echo "" \| ps2pdf -sPAPERSIZE=$PAPER_SIZE - $BLANK
			pdftk A=$INPUT B=$BLANK cat $COMMSTR output $TMP_OUTPUT
			mv $TMP_OUTPUT $OUTPUT
			rm -f $TMP_DIR/$$_*
			fi

			# RIP
			exit 0