#

# Copyright (c) 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 LucĂ­a Andrea Illanes Albornoz <lucia@luciaillanes.de>

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

#

#

# Private subroutines

#

rtlp_fileop_check() {

	local _rpfc_prefix="${1}" _rpfc_pname="" _rpfc_rname=""; shift;

	return 0;

};

rtlp_fileop_log() {

	rtl_log_msgV "fileop" "0;${1}";

};

#

# Public globals

#

RTL_FILEOP_SOURCE_FNAME="";

#

# Public subroutines

#

#

# rtl_fileop() - clean download cache for single package

# @_op:		file operation (one of: cd, chmod, chgrp, chown, cp_follow, cp, install, ln_symbolic, mv, touch, mkdir, mkfifo, rm, source, source_opt, test)

# @...:		file operation arguments

#

# Returns:	zero (0) on success, non-zero (>0) on failure

#

rtl_fileop() {

	local	_rf_op="${1}"					\

		_rf_dst="" _rf_group="" _rf_install_args=""	\

		_rf_mode="" _rf_owner="" _rf_rc=0 _rf_src=""; shift;

	case "${_rf_op}" in

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

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invalid_dir}" "${1}";

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

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

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

		fi; ;;

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

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_chmod}" "${*}";

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

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

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

			chmod -- "${_rf_mode}" "${@}"; _rf_rc="${?}";

		fi; ;;

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

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_chgrp}" "${*}";

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

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

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

			chgrp -- "${_rf_group}" "${@}"; _rf_rc="${?}";

		fi; ;;

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

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_chown}" "${*}";

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

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

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

			chown -- "${_rf_owner}" "${@}"; _rf_rc="${?}";

		fi; ;;

	cp_follow)

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

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_cp_follow}" "${*}";

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

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

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

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

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

		fi; ;;

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

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_cp}" "${*}";

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

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

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

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

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

		fi; ;;

	install)

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

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_install}" "${*}";

		else

			rtl_lindexV \$_rf_dst -1 "${@}";

			rtl_lrangeV \$_rf_install_args 0 1 "${@}";

			rtl_lindexV \$_rf_install_args -2 "${@}";

			if rtlp_fileop_check "${PREFIX:-}" "${_rf_dst}" "${_rf_src}"; then

				rtlp_fileop_log "Installing \`${_rf_src}' into \`${_rf_dst}' w/ ${_rf_install_args}.";

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

			fi;

		fi; ;;

	ln_symbolic)

		if [ \( "${1:+1}" != 1 \) -o \( "${2:+1}" != 1 \) ]; then

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_ln_symbolic}" "${*}";

		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}"; _rf_rc="${?}";

			fi;

		fi; ;;

	mv)	if [ \( "${1:+1}" != 1 \) -o \( "${2:+1}" != 1 \) ]; then

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_mv}" "${*}";

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

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

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

		fi; ;;

	touch)	if [ "${1:+1}" != 1 ]; then

			rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_touch}" "${*}";

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

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

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

		fi; ;;

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

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

			if [ "${1:+1}" != 1 ]; then

				rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm}" "${_rf_op}" "${*}";

			elif [ "${_rf_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 -- "${1}"; _rf_rc="${?}";

			elif [ "${_rf_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 -- "${1}"; _rf_rc="${?}";

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

			&& rtl_fileop test "${1}"\

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

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

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

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

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

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

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

			elif [ "${_rf_op}" = source_with_fnamevar ]\

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

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

				RTL_FILEOP_SOURCE_FNAME="${1}";

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

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

			&& rtl_fileop test "${1}"\

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

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

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

			elif [ "${_rf_op}" = source_opt_with_fnamevar ]\

			&& rtl_fileop test "${1}"\

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

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

				RTL_FILEOP_SOURCE_FNAME="${1}";

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

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

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

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

				return 1;

			fi; shift;

		done; ;;

	*)	rtl_log_msgV "fatalexit" "${MSG_rtl_fileop_invparm_fileop}" "${*}"; ;;

	esac;

	return "${_rf_rc}";

};

# vim:filetype=sh textwidth=0