#

# set +o errexit -o noglob -o nounset is assumed.

#

#

# Private globals and subroutines

#

RTLP_FILEOP_LOG=0;

rtl_fileop_set_log() { RTLP_FILEOP_LOG="${1}"; };

rtlp_fileop_check() {

	local _prefix="${1}" _pname="" _rname=""; shift;

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

		return 0;

	shift; done;

};

rtlp_fileop_log() {

	local _msg="${1}";

	if [ "${RTLP_FILEOP_LOG:-0}" -eq 1 ]; then

		rtl_log_msg debug "${_msg}";

	fi;

};

rtl_fileop() {

	local _op="${1}" _dst="" _group="" _install_args="" _mode="" _owner="" _rc=0 _src=""; shift;

	case "${_op}" in

	cd)	if [ \( -z "${1}" \) -o ! \( -L "${1}" -o -e "${1}" \) ]; then

			rtl_log_msg fatalexit "Invalid or non-existent directory \`%s'." "${1}";

		elif rtlp_fileop_check "${PREFIX:-}" "${1}"; then

			rtlp_fileop_log "Changing working directory to \`${1}'.";

			cd -- "${1}"; _rc="${?}";

		fi; ;;

	chmod)	if [ "${#}" -lt 2 ]; then

			rtl_log_msg fatalexit "Missing parameters (in: chmod %s.)" "${*}";

		elif _mode="${1}" && shift\

		&&   rtlp_fileop_check "${PREFIX:-}" "${*}"; then

			rtlp_fileop_log "Changing file mode bits of \`${*}' to \`${_mode}'.";

			chmod -- "${_mode}" "${@}"; _rc="${?}";

		fi; ;;

	chgrp)	if [ "${#}" -lt 2 ]; then

			rtl_log_msg fatalexit "Missing parameters (in: chgrp %s.)" "${*}";

		elif _group="${1}" && shift\

		&&   rtlp_fileop_check "${PREFIX:-}" "${*}"; then

			rtlp_fileop_log "Changing file group of \`${*}' to \`${_group}'.";

			chgrp -- "${_group}" "${@}"; _rc="${?}";

		fi; ;;

	chown)	if [ "${#}" -lt 2 ]; then

			rtl_log_msg fatalexit "Missing parameters (in: chown %s.)" "${*}";

		elif _owner="${1}" && shift\

		&&   rtlp_fileop_check "${PREFIX:-}" "${*}"; then

			rtlp_fileop_log "Changing file owner of \`${*}' to \`${_owner}'.";

			chown -- "${_owner}" "${@}"; _rc="${?}";

		fi; ;;

	cp_follow)

		if [ "${#}" -lt 2 ]; then

			rtl_log_msg fatalexit "Missing parameters (in: cp_follow %s}.)" "${*}";

		elif rtlp_fileop_check "${PREFIX:-}" "${*}"; then

			_src="${*}"; _src="${_src% *}";

			_dst="${*}"; _dst="${_dst##* }";

			rtlp_fileop_log "Copying \`${_src}' into \`${_dst}' w/ -pLR.";

			cp -pLR -- "${@}"; _rc="${?}";

		fi; ;;

	cp)	if [ "${#}" -lt 2 ]; then

			rtl_log_msg fatalexit "Missing parameters (in: cp %s.)" "${*}";

		elif rtlp_fileop_check "${PREFIX:-}" "${*}"; then

			_src="${*}"; _src="${_src% *}";

			_dst="${*}"; _dst="${_dst##* }";

			rtlp_fileop_log "Copying \`${_src}' into \`${_dst}' w/ -pPR.";

			cp -pPR -- "${@}"; _rc="${?}";

		fi; ;;

	install)

		if [ "${#}" -lt 2 ]; then

			rtl_log_msg fatalexit "Missing parameters (in: install %s.)" "${*}";

		else	_dst="$(while [ ""${#}"" -gt 2 ]; do shift; done; printf "%s" "${2}")";

			_install_args="$(while [ ""${#}"" -gt 2 ]; do printf "%s" "${1}"; shift; done)";

			_src="$(while [ ""${#}"" -gt 2 ]; do shift; done; printf "%s" "${1}")";

			if rtlp_fileop_check "${PREFIX:-}" "${_dst}" "${_src}"; then

				rtlp_fileop_log "Installing \`${_src}' into \`${_dst}' w/ ${_install_args}.";

				install "${@}"; _rc="${?}";

			fi;

		fi; ;;

	ln_symbolic)

		if [ \( -z "${1}" \) -o \( -z "${2}" \) ]; then

			rtl_log_msg fatalexit "Missing parameters (in: ln_symbolic %s.)" "${*}";

		elif rtlp_fileop_check "${PREFIX:-}" "${2}"; then

			if rtl_fileop test "${2}"; then

				rtl_fileop rm "${2}";

			fi;

			if [ "${?}" -eq 0 ]; then

				rtlp_fileop_log "Linking \`${1}' to \`${2}' w/ -fs";

				ln -fs -- "${1}" "${2}"; _rc="${?}";

			fi;

		fi; ;;

	mv)	if [ \( -z "${1}" \) -o \( -z "${2}" \) ]; then

			rtl_log_msg fatalexit "Missing parameters (in: mv %s.)" "${*}";

		elif rtlp_fileop_check "${PREFIX:-}" "${1}" "${2}"; then

			rtlp_fileop_log "Moving \`${1}' to \`${2}' w/ -fs";

			mv -f -- "${1}" "${2}"; _rc="${?}";

		fi; ;;

	touch)	if [ -z "${1}" ]; then

			rtl_log_msg fatalexit "Missing parameters (in: touch %s.)" "${*}";

		elif rtlp_fileop_check "${PREFIX:-}" "${1}"; then

			rtlp_fileop_log "Touching file \`${1}'${2:+ w/ timestamp \`${2}\'}.";

			touch ${2:+-t "${2}"} -- "${1}"; _rc="${?}";

		fi; ;;

	mkdir|mkfifo|rm|source|source_opt|test)

		while [ \( "${?}" -eq 0 \) -a \( ""${#}"" -gt 0 \) ]; do

			if [ -z "${1}" ]; then

				rtl_log_msg fatalexit "Missing parameters (in: %s %s.)" "${_op}" "${*}";

			elif [ "${_op}" = mkdir ]\

			&& [ ! -d "${1}" ]\

			&& rtlp_fileop_check "${PREFIX:-}" "${1}"; then

				if rtl_fileop test "${1}"; then

					rtl_fileop rm "${1}";

				fi;

				rtlp_fileop_log "Making directory \`${1}'.";

				mkdir -p -- "${1}"; _rc="${?}";

			elif [ "${_op}" = mkfifo ]\

			&& rtlp_fileop_check "${PREFIX:-}" "${1}"; then

				if rtl_fileop test "${1}"; then

					rtl_fileop rm "${1}";

				fi;

				rtlp_fileop_log "Creating FIFO \`${1}'.";

				rtlp_fileop_check "${PREFIX:-}" "${1}";

				mkfifo -- "${1}"; _rc="${?}";

			elif [ "${_op}" = rm ]\

			&& rtl_fileop test "${1}"\

			&& rtlp_fileop_check "${PREFIX:-}" "${1}"; then

				rtlp_fileop_log "Removing directory or file \`${1}'.";

				rm -rf -- "${1}"; _rc="${?}";

			elif [ "${_op}" = source ]\

			&& rtlp_fileop_check "${PREFIX:-}" "${1}"; then

				rtlp_fileop_log "Sourcing file \`${1}'.";

				. "${1}"; _rc="${?}";

			elif [ "${_op}" = source_opt ]\

			&& rtl_fileop test "${1}"\

			&& rtlp_fileop_check "${PREFIX:-}" "${1}"; then

				rtlp_fileop_log "Sourcing file \`${1}'.";

				. "${1}"; _rc="${?}";

			elif [ "${_op}" = test ]\

			&& rtlp_fileop_check "${PREFIX:-}" "${1}"\

			&& ! [ \( -L "${1}" \) -o \( -e "${1}" \) ]; then

				return 1;

			fi; shift;

		done; ;;

	*)	rtl_log_msg fatalexit "Error: rtl_fileop() called w/ invalid parameter(s): %s" "${*}"; ;;

	esac; return "${_rc}";

};

# vim:filetype=sh