format RGB-CMYK LUT

lut2gbindex.sh

#!/bin/bash -e

#trap "rm -f cmyk.csv rgb.txt" EXIT

if [ $# -ne 1 ]; then
	echo "Usage: `basename $0` rgb_lab.h"
	exit 1
fi

if [ ! -e "$1" ]; then
	echo "File \"$1\" not exist." 1>&2
	exit 1
fi

LINES=`wc -l $1 | tr -d ' ' | sed -e 's/^\(....\).*/\1/'`

sed -e '1d' -e '$d' -e 's/,$//' "$1" >cmyk.csv
eval echo \{$(seq -s, 0 16 256)\},\{$(seq -s, 0 16 256)\},\{$(seq -s, 0 16 256)\}, | sed -e 's/ /\n/g' >rgb.txt
#echo {0,16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256},{0,16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256},{0,16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256}, | sed -e 's/ /\n/g' >rgb.txt
paste rgb.txt cmyk.csv | tr ',' '\t' | sed -e 's/\t\t/\t/g' -e 's/255/256/g'
rm -f cmyk.csv rgb.txt
if [ $LINES -ne 4915 ]; then
	echo "File \"$1\" is not varid." 1>&2
fi