#

# set -o errexit -o noglob are assumed.

#

EXP_IFS_NL="

";

ex_basename() { echo "${1##*/}"; };

ex_date() { command date "+${1:-${TIMESTAMP_FMT}}"; };

ex_dirname() { echo "${1%/*}"; };

ex_get_var_unsafe() { eval echo \${${1}}; };

ex_set_var_unsafe() { [ -n "${2}" ] && eval ${1}=\"${2}\" || return 0; };

ex_pop_IFS() { IFS="${EXP_OLDIFS}"; };

ex_push_IFS() { EXP_OLDIFS="${IFS}"; IFS="${1}"; };

ex_push_IFS_nl() { ex_push_IFS "${EXP_IFS_NL}"; };

ex_test_cmd() { command -v "${1}" >/dev/null; };

ex_toupper() { echo "${1}" | tr a-z A-Z; };

ex_lfilter() {

	[ "x${1}" = "x-not" ] && { local _notfl=1; shift; }

	local _list="${1}" _filter="${2}" _lnew _litem _ex_lfilter _filterfl;

	[ -z "${_filter}" ] && { echo "${_list}"; return 0; };

	for _litem in ${_list}; do

		_filterfl=0;

		for _ex_lfilter in ${_filter}; do

			if [ "${_notfl:-0}" -eq 0 ]\

			&& [ "${_ex_lfilter}" = "${_litem}" ]; then

				_lnew="${_lnew:+${_lnew} }${_litem}"; break;

			elif [ "${_notfl:-0}" -eq 1 ]\

			&& [ "${_ex_lfilter}" = "${_litem}" ]; then

				_filterfl=1; break;

			fi;

		done;

		if [ "${_notfl:-0}" -eq 1 ]\

		&& [ "${_filterfl:-0}" -eq 0 ]; then

			_lnew="${_lnew:+${_lnew} }${_litem}";

		fi;

	done;

	echo "${_lnew}";

};

ex_lmatch() {

	local _cmp="${3}" IFS="${2}"; set -- ${1};

	while [ ${#} -gt 0 ]; do

		if [ "${1}" = "${_cmp}" ]; then

			return 0;

		fi; shift;

	done; return 1;

};

ex_run_cmd_unsplit() {

	local _cmd="${1}" _cmdline _rc IFS; shift;

	while [ ${#} -gt 0 ]; do

		[ -n "${1}" ] &&\

			_cmdline="${_cmdline:+${_cmdline}:}${1}";

		shift;

	done;

	IFS=:; ${_cmd} ${_cmdline}; _rc=$?;

	return ${_rc};

};

# vim:filetype=sh