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#
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# set -o noglob is assumed.
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#
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exp_rtl_fileop_check() {
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	local _prefix="${1}" _pname="" _rname=""; shift;
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	while [ ${#} -gt 0 ]; do
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		return 0;
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	shift; done;
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};
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ex_rtl_fileop() {
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	local _op="${1}" _src="" _dst=""; shift;
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	case "${_op}" in
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	cd)	if [ \( -z "${1}" \) -o ! \( -L "${1}" -o -e "${1}" \) ]; then
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			ex_rtl_log_msg failexit "Invalid or non-existent directory \`${1}'.";
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		else
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			ex_rtl_log_msg vvvo "Changing working directory to \`${1}'.";
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			exp_rtl_fileop_check "${PREFIX}" "${1}";
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			cd -- "${1}";
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		fi; ;;
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	cp_follow)
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		if [ ${#} -lt 2 ]; then
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			ex_rtl_log_msg failexit "Missing parameters (in: cp_follow ${*}.)";
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		else
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			_src="${*}"; _src="${_src% *}";
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			_dst="${*}"; _dst="${_dst##* }";
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			ex_rtl_log_msg vvvo "Copying \`${_src}' into \`${_dst}' w/ -pLR.";
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			exp_rtl_fileop_check "${PREFIX}" "${*}";
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			cp -pLR -- "${@}";
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		fi; ;;
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	cp)	if [ ${#} -lt 2 ]; then
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			ex_rtl_log_msg failexit "Missing parameters (in: cp ${*}.)";
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		else
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			_src="${*}"; _src="${_src% *}";
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			_dst="${*}"; _dst="${_dst##* }";
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			ex_rtl_log_msg vvvo "Copying \`${_src}' into \`${_dst}' w/ -pPR.";
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			exp_rtl_fileop_check "${PREFIX}" "${*}";
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			cp -pPR -- "${@}";
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		fi; ;;
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	ln_symbolic)
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		if [ \( -z "${1}" \) -o \( -z "${2}" \) ]; then
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			ex_rtl_log_msg failexit "Missing parameters (in: ln_symbolic ${*}.)";
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		else
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			exp_rtl_fileop_check "${PREFIX}" "${2}";
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			if ex_rtl_fileop test "${2}"; then
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				ex_rtl_fileop rm "${2}";
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			fi;
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			ex_rtl_log_msg vvvo "Linking \`${1}' to \`${2}' w/ -fs";
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			ln -fs -- "${1}" "${2}";
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		fi; ;;
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	mv)	if [ \( -z "${1}" \) -o \( -z "${2}" \) ]; then
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			ex_rtl_log_msg failexit "Missing parameters (in: mv ${*}.)";
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		else
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			ex_rtl_log_msg vvvo "Moving \`${1}' to \`${2}' w/ -fs";
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			exp_rtl_fileop_check "${PREFIX}" "${1}" "${2}";
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			mv -f -- "${1}" "${2}";
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		fi; ;;
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	mkdir|mkfifo|rm|source_opt|test|touch)
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		while [ ${#} -gt 0 ]; do
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			if [ -z "${1}" ]; then
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				ex_rtl_log_msg failexit "Missing parameters (in: ${_op} ${*}.)";
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			elif [ "${_op}" = mkdir ]\
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			&& [ ! -d "${1}" ]; then
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				exp_rtl_fileop_check "${PREFIX}" "${1}";
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				if ex_rtl_fileop test "${1}"; then
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					ex_rtl_fileop rm "${1}";
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				fi;
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				ex_rtl_log_msg vvvo "Making directory \`${1}'.";
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				mkdir -p -- "${1}";
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			elif [ "${_op}" = mkfifo ]; then
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				exp_rtl_fileop_check "${PREFIX}" "${1}";
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				if ex_rtl_fileop test "${1}"; then
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					ex_rtl_fileop rm "${1}";
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				fi;
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				ex_rtl_log_msg vvvo "Creating FIFO \`${1}'.";
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				exp_rtl_fileop_check "${PREFIX}" "${1}";
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				mkfifo -- "${1}";
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			elif [ "${_op}" = rm ]\
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			&& ex_rtl_fileop test "${1}"; then
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				ex_rtl_log_msg vvvo "Removing directory or file \`${1}'.";
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				exp_rtl_fileop_check "${PREFIX}" "${1}";
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				rm -rf -- "${1}";
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			elif [ "${_op}" = source_opt ]\
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			&& ex_rtl_fileop test "${1}"; then
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				ex_rtl_log_msg vvvo "Sourcing file \`${1}'.";
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				exp_rtl_fileop_check "${PREFIX}" "${1}";
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				. "${1}";
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			elif [ "${_op}" = test ]\
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			&& ! [ \( -L "${1}" \) -o \( -e "${1}" \) ]; then
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				return 1;
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			elif [ "${_op}" = touch ]; then
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				ex_rtl_log_msg vvvo "Touching file \`${1}'.";
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				exp_rtl_fileop_check "${PREFIX}" "${1}";
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				touch -- "${1}";
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			fi; shift;
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		done; ;;
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	*)	ex_rtl_log_msg failexit "Error: ex_rtl_fileop() called w/ invalid parameter(s): ${*}"; ;;
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	esac; return 0;
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};
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# vim:filetype=sh