#!/bin/sh
# DL_URL=http://your_remove_pkg_host.tld/packages/

    function gen_packages_txt {
	    echo '' > PACKAGES.TXT
	    find . -type f -name '*.meta' -exec cat {} \; >> PACKAGES.TXT
      cat PACKAGES.TXT | gzip -9 -c - > PACKAGES.TXT.gz
    }

    function gen_md5_checksums {
	    echo '' > CHECKSUMS.md5
	    find . -type f -name '*.tgz' -exec md5sum {} \; >> CHECKSUMS.md5
      cat CHECKSUMS.md5 | gzip -9 -c - > CHECKSUMS.md5.gz
    }

    function gen_meta {
	    if [ ! -f $1 ]; then
		    echo "File not found: $1"
		    exit 1;
	    fi
			if [ "`echo $1|grep -E '(.*{1,})\-(.*[\.\-].*[\.\-].*).tgz[ ]{0,}$'`" == "" ]; then
				return;
			fi
	    NAME=$(echo $1|sed -re "s/(.*\/)(.*.tgz)$/\2/")
	    LOCATION=$(echo $1|sed -re "s/(.*)\/(.*.tgz)$/\1/")
	    SIZE=$( expr `gunzip -l $1 |tail -1|awk '{print $1}'` / 1024 )
	    USIZE=$( expr `gunzip -l $1 |tail -1|awk '{print $2}'` / 1024 )
	    REQUIRED=$(tar xzfO $1 install/slack-required 2>/dev/null|xargs -r -iZ echo -n "Z,"|sed -e "s/,$//")
	    CONFLICTS=$(tar xzfO $1 install/slack-conflicts 2>/dev/null|xargs -r -iZ echo -n "Z,"|sed -e "s/,$//")
	    SUGGESTS=$(tar xzfO $1 install/slack-suggests 2>/dev/null|xargs -r )
	    METAFILE=${NAME%tgz}meta
	    echo "PACKAGE NAME:  $NAME" > $LOCATION/$METAFILE
	    if [ -n "$DL_URL" ]; then
	    	echo "PACKAGE MIRROR:  $DL_URL" >> $LOCATION/$METAFILE
	    fi
	    echo "PACKAGE LOCATION:  $LOCATION" >> $LOCATION/$METAFILE
	    echo "PACKAGE SIZE (compressed):  $SIZE K" >> $LOCATION/$METAFILE
	    echo "PACKAGE SIZE (uncompressed):  $USIZE K" >> $LOCATION/$METAFILE
	    echo "PACKAGE REQUIRED:  $REQUIRED" >> $LOCATION/$METAFILE
	    echo "PACKAGE CONFLICTS:  $CONFLICTS" >> $LOCATION/$METAFILE
	    echo "PACKAGE SUGGESTS:  $SUGGESTS" >> $LOCATION/$METAFILE
	    echo "PACKAGE DESCRIPTION:" >> $LOCATION/$METAFILE
	    tar xzfO $1 install/slack-desc |grep -E '\w+\:'|grep -v '^#' >> $LOCATION/$METAFILE
	    echo "" >> $LOCATION/$METAFILE
    }

    case "$1" in
	    pkg)
		    if [ -n "$2" ]; then
			    gen_meta $2
		    else
			    echo "$0 [pkg [file]|all|new|PACKAGESTXT|MD5]"
		    fi
	    ;;
	    all)
		    for pkg in `find . -type f -name '*.tgz' -print`
		    do
			    gen_meta $pkg
		    done
		    $0 PACKAGESTXT
		    $0 MD5
	    ;;
	    new)
		    for pkg in `find . -type f -name '*.tgz' -print`
		    do
			    if [ ! -f ${pkg%tgz}meta ]; then
				    gen_meta $pkg
			    fi
		    done
	    ;;
	    PACKAGESTXT)
		    gen_packages_txt
	    ;;
	    MD5)
		    gen_md5_checksums
	    ;;
	    *)
		    echo "$0 [pkg [file]|all|new|PACKAGESTXT|MD5]"
	    ;;
    esac