PDF file to CBZ file for Kobo Glo

pdftocbz.sh

#!/bin/bash -ex
# pdftocbz.sh
# Written by Takashi UNO
# require: poppler, ImageMagick

if [ $# -ne 1 ]; then
  echo "USAGE: `basename $0` hogehoge.pdf"
	exit 1
fi

for cmd in awk zip pdftoppm convert ; do
	if [ ! -x "`which $cmd`" ]; then
		echo "command $cmd is not found."
		exit 1
	fi
done

if [ ! -f "$1" ]; then
	echo "$1: file not exist."
	exit 1
fi

SRC="$(cd "$(dirname "$1")" && pwd)/$(basename "$1")"
TMPDIR="/var/tmp/`basename "$1" .pdf`"
# TMPDIR="${1%.pdf}"
trap 'rm -rf "${TMPDIR}"' EXIT
mkdir "${TMPDIR}" && cd "${TMPDIR}"

pdftoppm -r 300 -png "$SRC" image

TITLE=`pdfinfo "$SRC" | grep Title | awk '{print $2}'`
AUTHOR=`pdfinfo "$SRC" | grep Author | awk '{print $2}'`

TOP=4
BOTTOM=96
RIGHT=4
LEFT=4
SIZE="758x1024"
BORDER=20

for INPUT in image*.png; do
	convert ${INPUT} \
		-chop ${LEFT}x${TOP} \
		-gravity SouthEast -chop ${RIGHT}x${BOTTOM} \
		-gravity NorthWest \
		-fuzz 50% -trim \
		-bordercolor white -border ${BORDER} \
		-type grayscale \
		-geometry ${SIZE} \
		-sharpen 5 \
		-depth 4 ${INPUT%.png}_resized.png
done
test -x `which optipng` && optipng *_resized.png

if [ "a" = "a${AUTHOR}" -a "t" = "t${TITLE}" ]; then
	zip -jqr "${SRC%.pdf}.cbz" *_resized.png
else
	zip -jqr "`dirname "$SRC"`/[${AUTHOR}] ${TITLE}.cbz" *_resized.png
fi