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#!/bin/bash
# Solves issue165... on the old roundup install.  From the database
# backups, the title was "Older/deprecated packages never leave the
# repo", I don't know how the body of the issue is stored in the DB,
# but the title says enough, I think.

. "$(dirname "$(readlink -e "$0")")/../config"
. "$(dirname "$(readlink -e "$0")")/../db-functions"

# Traverse all repos
for _repo in "${PKGREPOS[@]}"; do
	msg "Cleaning up [%s]" "${_repo}"

	# Find all pkgnames on this repo's abs
	on_abs=($(
			find "${SVN_repository}/${_repo}" -name PKGBUILD | \
				while read pkgbuild; do
				source "${pkgbuild}" >/dev/null 2>&1
				# cleanup to save memory
				unset build package source md5sums pkgdesc pkgver pkgrel epoch \
					url license arch depends makedepends optdepends options \
					>/dev/null 2>&1

				# also cleanup package functions
				for _pkg in "${pkgname[@]}"; do
					unset "package_${pkg}" >/dev/null 2>&1
				done

				# this fills the on_abs array
				echo "${pkgname[@]}"
			done
			))

	# quit if abs is empty
	if [ ${#on_abs[*]} -eq 0 ]; then
		warning "[%s]'s ABS tree is empty, skipping" "${_repo}"
		break
	fi

	# Find all pkgnames on repos
	on_repo=($(
			find "${root_dir}/${_repo}" -name "*.pkg.tar.?z" \
				-printf "%f\n" | sed "s/^\(.\+\)-[^-]\+-[^-]\+-[^-]\+$/\1/"
			))

	# Compares them, whatever is on repos but not on abs should be removed
	remove=($(comm -13 \
	               <(printf '%s\n' "${on_abs[@]}"  | sort -u) \
	               <(printf '%s\n' "${on_repo[@]}" | sort -u) ))

	# Remove them from databases, ftpdir-cleanup will take care of the rest
	find "${root_dir}/${_repo}" -name "*.db.tar.?z" \
		-exec repo-remove {} "${remove[@]}" \; >/dev/null 2>&1

	msg2 "Removed the following packages:"
	plain '%s' "${remove[@]}"
done