#!/bin/sh
#
#  scratchpkg
#
#  Copyright (c) 2018 by Emmett1  (emmett1.2miligrams@gmail.com)
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <https://www.gnu.org/licenses/>.
#
#
#  script to check shared libraries dependencies
#

get_libpath() {
	ldd $1 2>/dev/null | grep $2 | awk '{print $3}'
}

scratch files $1 | while read -r line; do
	case $line in
		usr/share/gir-1.0/*.gir) extra_dep="$extra_dep gobject-introspection";;
		usr/share/vala/vapi/*.vapi) extra_dep="$extra_dep vala";;
	esac
	case $line in
		*/) continue;;
	esac
	case "$(file -bi /$line)" in
		*application/x-sharedlib* | *application/x-executable* | *application/x-pie-executable*)
			for NEEDED in $(objdump -x /$line | grep NEEDED | awk '{print $2}'); do
				case $NEEDED in
					libc.so|libc.so.6) continue;;
				esac
				[ "$NEEDED" ] || continue
				[ -f /"$line" ] || continue
				libs=$(get_libpath /$line $NEEDED)
				[ "$libs" ] || continue
				if ! echo $all_libs | grep -qw $libs; then
					pkg=$(scratch provide $libs$ | awk '{print $1}' | head -n1)
					case $pkg in
						$1|gcc|glibc|musl) continue;;
					esac
					[ "$pkg" ] || continue
					if ! echo $all_pkgs | grep -qw $pkg; then
						echo $pkg
						all_pkgs="$all_pkgs $pkg"
						unset pkg
					fi
					all_libs="$all_libs $libs"
					unset libs
				fi
			done ;;
	esac
	[ "$extra_dep" ] && {
		for e in $extra_dep; do
			if ! echo $all_pkgs | grep -qw $e; then
				echo $e
				all_pkgs="$all_pkgs $e"
			fi
		done
	}
done

exit 0