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Blame etc/rotate_archives.sh

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#!/bin/sh
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glob() { set +o noglob; echo ${@}; set -o noglob; };
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map() { local _ifs="${IFS}" _sep="${1}"; shift; IFS="${_sep}"; echo "${*}"; IFS="${_ifs}"; };
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rc() { echo "${@}"; "${@}"; };
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rotate_build() {
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	local _build_dname="${1}" _hostname="${2}" _limit="${3}";
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	local _dist_dates="";
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	for _dist_fname in $(glob			\
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			${_build_dname}/*.tar.*		\
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			${_build_dname}/*.zip		\
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			${_build_dname}/*.zip.*); do
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		if [ -e "${_dist_fname}" ]; then
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			_dist_date="${_dist_fname#*@${_hostname}-}";
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			_dist_date="${_dist_date%.tar.*}";
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			_dist_date="${_dist_date%.zip}";
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			_dist_date="${_dist_date%.zip.*}";
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			_dist_date="${_dist_date%-[0-9][0-9]-[0-9][0-9]-[0-9][0-9]}";
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			_dist_dates="${_dist_dates:+${_dist_dates} }${_dist_date}";
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		fi;
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	done;
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	if [ -n "${_dist_dates}" ]; then
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		rotate_build_dates "${_build_dname}" "${_dist_dates}" "${_limit}";
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	fi;
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};
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rotate_build_dates() {
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	local _build_dname="${1}" _dist_dates="${2}" _limit="${3}";
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	local _dist_dates_count="" _dist_dates_count_limit="" _dist_fname="" _nl="
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";	_dist_dates="$(map "${_nl}" ${_dist_dates} | sort | uniq)";
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	_dist_dates_count="$(echo "${_dist_dates}" | wc -l)";
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	if [ "${_dist_dates_count}" -gt "${_limit}" ]; then
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		_dist_dates_count_limit=$((${_dist_dates_count}-${_limit}));
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		_dist_dates="$(echo "${_dist_dates}" |\
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				sed -n "1,${_dist_dates_count_limit}p")";
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		for _dist_date in ${_dist_dates}; do
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			for _dist_fname in $(glob	\
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					${_build_dname}/*-${_dist_date}-*.tar.xz*); do
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				rc rm -f "${_dist_fname}";
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			done;
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		done;
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	fi;
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};
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rotate_builds() {
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	local _build_dnames="${1}" _limit="${2}";
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	local _hostname="$(hostname)";
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	for _build_dname in ${_build_dnames}; do
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		rotate_build "${_build_dname}" "${_hostname}" "${_limit}";
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	done;
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};
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set -o errexit -o noglob;
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rotate_builds "${1}" "${2:-3}";
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# vim:noexpandtab sw=8 ts=8