scratchpkg/pkgdeplist

#!/bin/bash

RED='\e[0;31m'      #Red
GREEN='\e[0;32m'    #Green
YELLOW='\e[0;33m'   #Yellow
CYAN='\e[0;36m'     #Cyan
CRESET='\e[0m'		#Reset color

msgerr() {
	echo -e "${RED}==> ERROR:${CRESET} $1"
}

msginst() {
	echo -e "[${GREEN}i${CRESET}] $1"
}

msgmiss() {
	echo -e "[${YELLOW}m${CRESET}] $1"
}

msgnoinst() {
	echo -e "[ ] $1"
}

if [ ! "$1" ]; then
	msgerr "Please specify package name to list its dependencies order."
	exit 1
fi

while read repodir repourl junk; do
	case $repodir in
		""|"#"*) continue ;;
	esac
	PORT_REPO+=($repodir)
done < /etc/scratchpkg.repo

checkdep() {
	local depends
	
	depends=$(grep "^# depends[[:blank:]]*:" $(getportpath "$1")/spkgbuild | sed 's/^# depends[[:blank:]]*:[[:blank:]]*//')
	source $(getportpath "$1")/spkgbuild
	for dep in ${depends[@]}; do
		echo $dep
	done
}

getportpath() {	
	for repo in ${PORT_REPO[@]}; do
		if [[ -f $repo/$1/spkgbuild ]]; then
			echo "$(dirname $repo/$1/spkgbuild)"
			return 0
		fi
	done
	return 1	
}

deplist() {	
	# check currently process package for loop
	if [ ${#CHECK[@]} -gt 0 ]; then
		if [[ "$(echo ${CHECK[@]} | tr " " "\n" | grep -x $1)" == "$1" ]]; then
			if [ "$IGNORE_LOOP" = 1 ]; then
				return 0
			else
				msgerr "loop dependency found: $1"
				exit 1
			fi
		fi
	fi
	
	# add package to currently process
	CHECK+=($1)
	
	# check dependencies
	for i in $(checkdep $1); do
		if [[ $(echo ${DEP[@]} | tr " " "\n" | grep -x $i) = "" ]]; then
			deplist $i
		fi
	done
	
	# add dependency to list checked dep
	if [[ $(echo ${DEP[@]} | tr " " "\n" | grep -x $1) = "" ]]; then
		DEP+=($1)
	fi
	
	# delete process package array
	for i in "${!CHECK[@]}"; do
		if [[ ${CHECK[i]} = "$1" ]]; then
			unset 'CHECK[i]'
		fi
	done	
}

INDEX_DIR="/var/lib/scratchpkg/index"

while [ "$1" ]; do
	case $1 in
		-i|--installed)     INSTALLED=1 ;;
		-n|--not-installed) NOT_INSTALLED=1 ;;
		-m|--missing)       MISSING=1 ;;
		-l|--loop)          IGNORE_LOOP=1 ;;
		*)                  PKG+=($1) ;;
	esac
	shift
done

for pkg in ${PKG[@]}; do
	if [ ! $(getportpath $pkg) ]; then
		msgerr "Package '$pkg' not found."
		exit 1
	fi
done

for pkg in ${PKG[@]}; do
	deplist $pkg
done

for deps in ${DEP[@]}; do
	if [ "$NOT_INSTALLED" = 1 ]; then
		if [ ! -e $INDEX_DIR/$deps/.pkginfo ]; then
			echo "$deps"
		fi
	elif [ "$MISSING" = 1 ]; then
		if [ ! $(getportpath "$deps") ]; then
			echo "$deps"
		fi
	elif [ "$INSTALLED" ]; then
		if [ -e $INDEX_DIR/$deps/.pkginfo ]; then
			echo "$deps"
		fi
	else
		if [ -e $INDEX_DIR/$deps/.pkginfo ]; then
			msginst "$deps"
		elif ! getportpath "$deps" >/dev/null; then
			msgmiss "$deps"
		else
			msgnoinst "$deps"
		fi
	fi
done

exit 0