#!/bin/busybox sh
#
# script.subr -- subroutines for Vanilla scripts
#
# Copyright (c) 2019 David Demelier <markand@malikania.fr>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

: ${COLORS:=auto}

for applet in $(busybox --list); do
	alias applet="busybox $applet"
done

TOP=$(realpath $(dirname $0)/../)

case $COLORS in
"auto")
	if [ ! -t 1 ]; then
		COLORS=""
	else
		COLORS="yes"
	fi
	;;
"no")
	COLORS=""
	;;
esac

if [ -n "$COLORS" ]; then
	RESET="\033[0m"
	BOLD="\033[1m"
fi

vnl_warn()
{
	echo "abort: $1" 1>&2
}

vnl_err()
{
	vnl_warn "$@"
	exit 1
}

vnl_open_build()
{
	local path
	local name

	if [ -n "$1" ]; then
		path=$TOP/$1
	else
		path=$(pwd)
	fi

	name=$(basename $path)

	if [ ! -f $path/$name.sh ]; then
		vnl_err "not a source package directory"
	fi

	. $path/$name.sh
}