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#
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# set -o errexit -o noglob are assumed.
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#
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IFS_NL="
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";
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ex_basename() { echo "${1##*/}"; };
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ex_date() { command date "+${1:-${TIMESTAMP_FMT}}"; };
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ex_dirname() { echo "${1%/*}"; };
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ex_get_var_unsafe() { eval echo \${${1}}; };
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ex_set_var_unsafe() { [ -n "${2}" ] && eval ${1}=\"${2}\" || return 0; };
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ex_split() { local IFS="${1}"; set -- $(echo "${2}"); IFS="${IFS_NL}"; echo "${*}"; };
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ex_test_cmd() { command -v "${1}" >/dev/null; };
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ex_toupper() { echo "${1}" | tr a-z A-Z; };
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ex_lfilter() {
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	[ "x${1}" = "x-not" ] && { local _notfl=1; shift; }
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	local _list="${1}" _filter="${2}" _lnew _litem _ex_lfilter _filterfl;
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	[ -z "${_filter}" ] && { echo "${_list}"; return 0; };
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	for _litem in ${_list}; do
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		_filterfl=0;
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		for _ex_lfilter in ${_filter}; do
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			if [ "${_notfl:-0}" -eq 0 ]\
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			&& [ "${_ex_lfilter}" = "${_litem}" ]; then
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				_lnew="${_lnew:+${_lnew} }${_litem}"; break;
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			elif [ "${_notfl:-0}" -eq 1 ]\
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			&& [ "${_ex_lfilter}" = "${_litem}" ]; then
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				_filterfl=1; break;
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			fi;
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		done;
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		if [ "${_notfl:-0}" -eq 1 ]\
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		&& [ "${_filterfl:-0}" -eq 0 ]; then
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			_lnew="${_lnew:+${_lnew} }${_litem}";
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		fi;
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	done;
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	echo "${_lnew}";
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};
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ex_lmatch() {
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	local _cmp="${3}" IFS="${2}"; set -- ${1};
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	while [ ${#} -gt 0 ]; do
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		if [ "${1}" = "${_cmp}" ]; then
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			return 0;
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		fi; shift;
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	done; return 1;
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};
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ex_run_cmd_unsplit() {
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	local _cmd="${1}" _cmdline _rc IFS; shift;
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	while [ ${#} -gt 0 ]; do
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		[ -n "${1}" ] &&\
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			_cmdline="${_cmdline:+${_cmdline}:}${1}";
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		shift;
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	done;
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	IFS=:; ${_cmd} ${_cmdline}; _rc=$?;
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	return ${_rc};
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};
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# vim:filetype=sh