#!/bin/sh
#
# grab_md5
# (c) 2004 Steve McIntyre <steve@einval.com>
#
# GPL v2
#
# Parse Packages and Sources files out of a mirror and pre-process
# them into a single list ready for mkisofs to check later

MIRROR=$1
ARCH=$2
SUITE=$3
OUT=$4

case $ARCH in
    source)
        FILES=`find $MIRROR/dists/$SUITE/ -name Sources.gz`
        echo -e "Using MD5 sums from Sources files:\n$FILES"
        zcat -f $FILES | awk '
            /^Directory:/ 	{
                                DIR = $2
                                next
                            }
            /^Files:/       {
                                in_files = 1
                                next
                            }
            /^ /            {
                                if (in_files) { 
                                    gsub("^ ", "", $0)
                                    MD5 = $1
                                    FILE = $3
                                    printf("%s  %s%s\n", MD5, DIR, FILE);
                                }
                            }
            /.*/            {
                                if (!length($0)) {
                                    in_files = 0
                                    next
                                }
                            }' | sort | uniq >> $OUT
        ;;
    alpha|arm|hppa|i386|ia64|m68k|mips|mipsel|powerpc|s390|sparc)
        FILES=`find $MIRROR/dists/$SUITE/ -name Packages -o -name Packages.gz | grep binary-$ARCH`
        echo -e "Using MD5 sums from Packages files:\n$FILES"
        zcat -f $FILES | awk '
            /^Filename:/    {
                                FILE = $2
                            }
            /^MD5sum:/      {
                                MD5 = $2
                                printf("%s  %s\n", MD5, FILE)
                            }' | sort | uniq >> $OUT
        ;;
    *)
        echo "Unknown arch/source $ARCH!"
        exit 1
        ;;
esac

exit 0