#!/bin/sh
#
# lint-deps.sh -- ensure that dependencies listed in PKGDEPENDS exist
#
# 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.
#

alias basename="busybox basename"
alias dirname="busybox dirname"
alias echo="busybox echo"
alias find="busybox find"
alias grep="busybox grep"
alias realpath="busybox realpath"

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

usage()
{
	echo "usage: $PROGNAME [category/package]" 1>&2
	exit 1
}

scriptfile()
{
	echo $1/$(basename $1).sh
}

list()
{
	if [ $# -eq 0 ]; then
		find $TOP -mindepth 2 -maxdepth 2 -type d | grep -v '\.hg'
	else
		file=$(scriptfile $1)

		if [ ! -f $file ]; then
			echo "abort: invalid package specified '$1'" 1>&2
			exit 1
		fi

		echo $1
	fi
}

check()
{
	file=$(scriptfile $1)
	failed=0

	echo -n "checking dependencies for $1: "

	# Reset PKGDEPENDS in case script is broken.
	PKGDEPENDS=""

	. $file

	for d in $PKGDEPENDS; do
		file=$TOP/$(scriptfile ${d%:*})

		if [ ! -f $file ]; then
			# Only print "error" once.
			if [ $failed -eq 0 ]; then
				failed=1
				echo "error"
			fi

			echo "missing ${d%:*}" 1>&2
		fi
	done

	if [ $failed -eq 0 ]; then
		echo "ok"
	fi
}

process()
{
	list $@ | while read pkg; do
		check $pkg
	done
}

process "$@"