#!/bin/sh -e

. "$LIXROOT/lib/built.sh"
. "$LIXROOT/lib/reverse.sh"
. "$LIXROOT/lib/versionpasses.sh"

dependencies() { # <contents of a 'deps' file>
    seen=""
    deps="$(echo "$1" | while read line; do
        eval "printf '%s\n' "\"$line\"""
    done)"

    echo "$deps" | while read line; do
        [ "$line" ] || continue;

        # eval inline expressions and convert all whitespace to single spaces.
        line="$(echo "$line" | tr -s '[:space:]' ' ')"
        dep="$(echo "$line" | cut -d' ' -f1)"
        depreq="$(echo "$line" | cut -d' ' -f2-)"
        depver="$(built "$dep" | reverse | while read ver; do
            [ "$ver" ] || continue;
            if [ "$(versionpasses "$dep" "$ver" "$depreq")" = "yes" ]; then
                echo "$ver"
                break
            fi
        done)"

        resolved="$(printf '%s\t%s\n' "$dep" "$depver")"
        echo "$seen" | grep -q "^$resolved\$" || echo "$resolved"

	seen="$resolved\n$seen"
    done
}