#!/bin/sh
##############################################################################
# Copyright (c) 2016 Free Software Foundation, Inc.                          #
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##############################################################################
# $Id: tput-initc,v 1.1 2016/12/10 23:35:46 tom Exp $
# Some of the ".dat" files in ncurses' test-directory give r/g/b numbers for
# default palettes of xterm and Linux console.  This script reads the numbers
# and (assuming the same or compatible terminal) uses tput to (re)initialize
# the palette using those numbers.

failed() {
	printf "?? $*\n" >&2
	exit 1
}

if [ $# = 1 ]
then
	file=$1
elif [ $# = 0 ]
then
	file=$TERM.dat
else
	failed "expected one parameter or none"
fi

if [ ! -f "$file" ]
then
	if [ -f "$file.dat" ]
	then
		file="$file.dat"
	else
		failed "no such file: $file"
	fi
fi

myterm=${file%%.dat}
colors=$(tput -T $myterm colors 2>/dev/null)
if [ ${colors:-0} -le 0 ]
then
	myterm=${myterm%%-color}
	colors=$(tput -T $myterm colors 2>/dev/null)
fi
if [ ${colors:-0} -le 0 ]
then
	failed "terminal $myterm does not support color"
fi

cat $file |\
awk -v myterm=$myterm '
BEGIN { limit=1000; }
function scaled(n) {
	return (n * 1000)/limit;
}

/^scale:[0-9]+/{
	sub("^scale:","",$0);
	limit = $0;
}

/^[0-9]+:/{
	sub(":","",$1);
	printf "tput -T%s initc %d %d %d %d\n", myterm, $1,scaled($2),scaled($3),scaled($4);
}' |sh -