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#!/bin/bash
# Solves issue165

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

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

	# Find all pkgnames on this repo's abs
	on_abs=($(
			find ${SVNREPO}/${_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 [ ${#on_abs[*]} -eq 0 ]; then
		warning "[${_repo}]'s ABS tree is empty, skipping"
		break
	fi

	# Find all pkgnames on repos
	on_repo=($(
			find ${FTP_BASE}/${_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 <(echo ${on_abs[@]} | tr ' ' "\n" | sort -u) \
		<(echo ${on_repo[@]} | tr ' ' "\n" | sort -u)))

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

	msg2 "Removed the following packages:"
	plain "$(echo ${remove[@]} | tr ' ' "\n")"

done

exit $?