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#!/bin/bash
# Syncs pools against themselves using database contents as filter to cleanup
# them up
# License: GPLv3

# Principles
# * Get repos dbs contents
# * Make them a include list
# * Rsync pools against themselves removing excluded files
# * Instant cleanup!

trap_exit() {
    echo
    error "$@"
    exit 1
}

source "$(dirname "$(readlink -e "$0")")/config"
source "$(dirname "$(readlink -e "$0")")/libremessages"

# From makepkg
set -E

trap 'trap_exit "$(gettext "TERM signal caught. Exiting...")"' TERM HUP QUIT
trap 'trap_exit "$(gettext "Aborted by user! Exiting...")"' INT
trap 'trap_exit "$(gettext "An unknown error has occurred. Exiting...")"' ERR

${CLEANUP_DRYRUN} && EXTRAFLAGS+=" --dry-run"

for _repo in ${PKGREPOS[@]}; do
    for _arch in ${ARCHES[@]}; do
        msg "Getting ${_repo}-${_arch} database"

        dbfile="${FTP_BASE}/${_repo}/os/${_arch}/${_repo}${DBEXT}"

        if [ ! -r "${dbfile}" ]; then
            warning "Not found"
            continue
        fi

# Echo the contents into a filter file
        bsdtar tf "${dbfile}" | \
            cut -d'/' -f1 | \
            sort -u | \
            sed "s|$|*|" >> /tmp/${0##*/}.$$.filter

    done
done

msg "Removing old files:"

for POOL in ${PKGPOOLS[@]} ${SRCPOOLS[@]}; do
    msg2 "${POOL}"

    rsync ${EXTRAFLAGS} -va --delete-excluded \
          --include-from="/tmp/${0##*/}.$$.filter" \
          --exclude="*" \
          ${FTP_BASE}/${POOL}/ \
          ${FTP_BASE}/${POOL}/
done

msg "Removing symlinks:"
find -L ${FTP_BASE}/ -type l 
${CLEANUP_DRYRUN} || find -L ${FTP_BASE}/ -type l -delete

exit $?