initial commit

Signed-off-by: Martin Matous <m@matous.dev>

autostart.eselect

@@ -0,0 +1,201 @@
+# Copyright (C) 2022 Martin Matouš
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, version 3.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+DESCRIPTION="Manage XDG autostart applications"
+MAINTAINER="Martin Matouš <m@matous.dev>"
+VERSION="1.0.0"
+
+AUTOSTART_DIR="${XDG_CONFIG_HOME%/}/autostart"
+
+get_entry_dirs() {
+	echo "${XDG_DATA_HOME%/}/applications"
+	local xdg_data
+	IFS=':' read -ra xdg_data <<< "${XDG_DATA_DIRS}"
+	for dir in "${xdg_data[@]}"; do
+		echo "${dir%/}/applications"
+	done
+}
+
+find_targets() {
+	mapfile -t entry_dirs < <(get_entry_dirs)
+	local dir
+	for dir in "${entry_dirs[@]}"; do
+		for desktop_file in "${dir%/}"/*.desktop; do
+			[[ -f ${desktop_file} ]] && echo "${desktop_file}"
+		done
+	done
+}
+
+remove_symlink() {
+	if [[ ! -L "${symlink}" ]]; then
+		die -q "${symlink} does not exist or is not a symlink!"
+	fi
+	rm -f "${symlink}"
+}
+
+### list action ###
+
+is_enabled() {
+	local -r entry="${1}"
+	mapfile -t autostarted_list < <(find "${AUTOSTART_DIR}" -type l)
+	local autostarted
+	IFS=""
+	for autostarted in ${autostarted_list[@]}; do
+	 	autostarted="$(canonicalise "${autostarted}")"
+	 	[[ "${entry}" = "${autostarted}" ]] && return 0
+	done
+	return 1
+}
+
+describe_list() {
+	echo "List available XDG .desktop files"
+}
+
+do_list() {
+	local i
+	mapfile -t targets < <(find_targets)
+	if [[ ! -d ${AUTOSTART_DIR} ]]; then
+		write_warning_msg "Autostart dir not found. Maybe you are running eselect autostart as root?"
+	fi
+
+	write_list_start "Available autostart symlink targets:"
+	for (( i = 0; i < ${#targets[@]}; i++ )); do
+		is_enabled "${targets[i]}" && targets[i]=$(highlight_marker "${targets[i]}")
+	done
+	write_numbered_list -m "(none found)" "${targets[@]}"
+}
+
+### enable action ###
+
+describe_enable() {
+	echo "Enable specified XDG .desktop file(s)"
+}
+
+describe_enable_parameters() {
+	echo "<target>"
+}
+
+describe_enable_options() {
+	echo "<target> : Target name or number (from 'list' action)"
+}
+
+deduce_path() {
+	mapfile -t entry_dirs < <(get_entry_dirs)
+	local dir
+	local -r entry_relative_path="${1}"
+	for dir in "${entry_dirs[@]}"; do
+		if [[ -f ${dir%/}/${entry_relative_path} ]]; then
+			echo "${dir%/}/${entry_relative_path}"
+		fi
+	done
+}
+
+activate_entry() {
+	local entry=${1}
+	shift
+	local -r targets=("${@}")
+
+	if is_number "${entry}"; then
+		[[ ${entry} -ge 1 && ${entry} -le ${#targets[@]} ]] \
+			|| die -q "Number out of range: ${entry}"
+		entry=${targets[entry-1]}
+	fi
+
+	if [[ ! "${entry}" == *".desktop" ]]; then
+		entry="${entry}.desktop"
+	fi
+
+	# if only file specified (no / in arg)
+	if [[ ! "${entry}" == *"/"* ]]; then
+		entry=$(deduce_path "${entry}")
+	fi
+
+	if [[ ! -f ${entry} ]]; then
+		write_error_msg "Entry ${entry} doesn't exist!"
+		return
+	fi
+
+	local -r symlink="${AUTOSTART_DIR}/$(basename "${entry}")"
+	# entry with that name is already activated
+	if [[ -L ${symlink} ]]; then
+		local -r active=$(find "${symlink}" -printf %l)
+		if [[ "${active}" = "${entry}" ]]; then
+			write_warning_msg "${active} is already activated"
+			return
+		else
+			remove_symlink "${symlink}" \
+				|| die -q "Couldn't deactivate previous entry"
+		fi
+		return
+	fi
+
+	ln -s "${entry}" "${symlink}" || \
+		write_error_msg "Failed to create symlink '${symlink}' -> '${entry}'"
+}
+
+do_enable() {
+	[[ -z ${1} ]] && die -q "You didn't specify any .desktop file to enable"
+
+	# create directory if necessary
+	if [[ ! -d ${AUTOSTART_DIR} ]]; then
+		mkdir -p "${AUTOSTART_DIR}" || die -q "Failed to create ${AUTOSTART_DIR}"
+	fi
+
+	# make sure we have proper permissions
+	if [[ ! -w ${AUTOSTART_DIR} ]]; then
+		die -q "You don't have permission to write to ${AUTOSTART_DIR}"
+	fi
+
+	mapfile -t targets < <(find_targets)
+	for entry in "$@"; do
+		activate_entry "${entry}" "${targets[@]}"
+	done
+}
+
+### disable action ###
+
+describe_disable() {
+	echo "Disable specified XDG .desktop file(s)"
+}
+
+describe_disable_parameters() {
+	echo "<target>"
+}
+
+describe_disable_options() {
+	echo "<target> : Target name or number (from 'list' action)"
+}
+
+
+do_disable() {
+	[[ -z ${1} ]] && die -q "You didn't specify any XDG .desktop files to disable"
+
+	local symlink_name symlink entry
+	mapfile -t targets < <(find_targets)
+	for entry in "$@"; do
+		if is_number "${entry}"; then
+			[[ ${entry} -ge 1 && ${entry} -le ${#targets[@]} ]] \
+				|| die -q "Number out of range: ${entry}"
+			entry="${targets[entry-1]}"
+		fi
+
+		if [[ ! "${entry}" == *".desktop" ]]; then
+			entry="${entry}.desktop"
+		fi
+
+		symlink_name=$(basename "${entry}")
+ 		symlink="${AUTOSTART_DIR}/${symlink_name}"
+		remove_symlink "${symlink}"
+	done
+}