From 58b95caf983d09096056cce60db8c1ecfda43cf7 Mon Sep 17 00:00:00 2001
From: Case Duckworth
Date: Wed, 27 Jul 2022 23:08:00 -0500
Subject: Initial commit

---
 COPYING      |   9 +++
 autoshart.sh | 231 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 240 insertions(+)
 create mode 100644 COPYING
 create mode 100755 autoshart.sh

diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..0520203
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,9 @@
+Copyright (C) 2022 Case Duckworth <acdw@acdw.net> 
+
+Usage of the works is permitted provided that this instrument is 
+retained with the works, so that any entity that uses the works is 
+notified of this instrument. 
+
+DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY. 
+
+
diff --git a/autoshart.sh b/autoshart.sh
new file mode 100755
index 0000000..4868846
--- /dev/null
+++ b/autoshart.sh
@@ -0,0 +1,231 @@
+#!/bin/sh
+# AUTOSHART: autostart *.desktop files
+# Copyright (C) 2022 Case Duckworth <acdw@acdw.net>
+# Licensed under the Fair license.  See COPYING for details.
+#
+# Commentary:
+#
+# Freedesktop autostart specification:
+# https://specifications.freedesktop.org/autostart-spec/latest/
+# Freedesktop desktop entry specification:
+# https://specifications.freedesktop.org/desktop-entry-spec/latest/
+#
+# Prior art:
+# - dex -- https://github.com/jceb/dex
+#
+# Code:
+
+usage() {
+	cat <<EOF
+AUTOSHART: autostart without the shit
+USAGE:	autoshart -h
+	autoshart [-k] [-n]
+
+FLAGS:
+ -h	Show this help and exit.
+ -k	Kill all processes started by autoshart and exit.
+ -n	Only print what would happen; don't execute anything.
+EOF
+}
+
+main() {
+	PID_FILE="${AUTOSHART_PID_FILE:-/tmp/autoshart.pid}"
+	FOUND_FILE="${AUTOSHART_FOUND_FILE:-/tmp/autoshart.found}"
+	RUN=true
+	QUIET=false
+	while getopts hknq opt; do
+		case "$opt" in
+		h) usage ;;
+		k) auto_kill ;;
+		n) RUN=false ;;
+		q) QUIET=true ;;
+		esac
+	done
+	shift "$((OPTIND - 1))"
+	auto_search
+}
+
+auto_kill() {
+	cat "$PID_FILE" | xargs kill
+}
+
+auto_start() { ## auto_start FILE
+	eprint "$1"
+	# When the .desktop file has the Hidden key set to true, the .desktop
+	# file MUST be ignored. When multiple .desktop files with the same name
+	# exists in multiple directories then only the Hidden key in the most
+	# important .desktop file must be considered: If it is set to true all
+	# .desktop files with the same name in the other directories MUST be
+	# ignored as well.
+	hidden="$(get Hidden "$1")"
+	test "$hidden" = true && return "$(die 1 "Stopped: Hidden: $1")"
+	# This specification defines 3 types of desktop entries: Application
+	# (type 1), Link (type 2) and Directory (type 3). To allow the addition
+	# of new types in the future, implementations should ignore desktop
+	# entries with an unknown type. (REQUIRED)
+	type="$(get Type "$1")"
+	test "$type" = Application || return "$(die 2 "Error: Bad desktop type: ${type:-[none]}")"
+	# Specific name of the application, for example "Mozilla".  (REQUIRED)
+	name="$(get Name "$1" | head -n1)"
+	test -n "$name" || return "$(die 3 "Error: No application name")"
+	# Program to execute, possibly with arguments. See the Exec key for
+	# details on how this key works. The Exec key is required if
+	# DBusActivatable is not set to true. Even if DBusActivatable is true,
+	# Exec should be specified for compatibility with implementations that
+	# do not understand DBusActivatable. (Makes no sense to be omitted in an
+	# autostart context --- acdw)
+	exec="$(get Exec "$1")"
+	test -n "$exec" || return "$(die 4 "Error: No Exec key: $1")"
+	# The OnlyShowIn entry may contain a list of strings identifying
+	# the desktop environments that MUST autostart this application, all
+	# other desktop environments MUST NOT autostart this application.  The
+	# NotShowIn entry may contain a list of strings identifying the desktop
+	# environments that MUST NOT autostart this application, all other
+	# desktop environments MUST autostart this application.  Only one of
+	# these keys, either OnlyShowIn or NotShowIn, may appear in a single
+	# .desktop file.
+	#
+	### The OnlyShowIn, NotShowIn keys are specified thus:
+	#
+	# A list of strings identifying the desktop environments that should
+	# display/not display a given desktop entry.
+	#
+	# By default, a desktop file should be shown, unless an OnlyShowIn key
+	# is present, in which case, the default is for the file not to be
+	# shown.
+	#
+	# If $XDG_CURRENT_DESKTOP is set then it contains a colon-separated list
+	# of strings. In order, each string is considered. If a matching entry
+	# is found in OnlyShowIn then the desktop file is shown. If an entry is
+	# found in NotShowIn then the desktop file is not shown. If none of the
+	# strings match then the default action is taken (as above).
+	#
+	# $XDG_CURRENT_DESKTOP should have been set by the login manager,
+	# according to the value of the DesktopNames found in the session
+	# file. The entry in the session file has multiple values separated in
+	# the usual way: with a semicolon.
+	#
+	# The same desktop name may not appear in both OnlyShowIn and NotShowIn
+	# of a group.
+	#
+	### I think this "functionality" is dubious at best and pretty
+	### ... silly.  --- acdw
+	onlyshowin="$(get OnlyShowIn "$1")"
+	notshowin="$(get NotShowIn "$1")"
+	if test -n "$onlyshowin" && test -n "$notshowin"; then
+		return "$(die 5 "Error: Incompatible keys: OnlyShowIn, NotShowIn: $1")"
+	elif test -n "$onlyshowin"; then
+		start=false
+	else
+		start=true
+	fi
+
+	# This is so cursed
+	quit="$(
+		echo "$XDG_CURRENT_DESKTOP" | tr : \\n |
+			while read desktop; do
+				case "$onlyshowin;$notshowin" in
+				*$desktop*)
+					if test -n "$onlyshowin"; then
+						break
+					elif test -n "$notshowin"; then
+						echo true
+						die 6 "Stopped: NotShowIn=$notshowin"
+					fi
+					;;
+				*)
+					if ! $start; then
+						echo true
+						die 6 "Stopped: OnlyShowIn=$onlyshowin"
+					fi
+					;;
+				esac
+			done
+		echo false
+	)"
+	if $quit; then
+		return 6
+	fi
+
+	# A .desktop file with a non-empty TryExec field MUST NOT be autostarted
+	# if the value of the TryExec key does NOT match with an installed
+	# executable program. The value of the TryExec field may either be an
+	# absolute path or the name of an executable without any path
+	# components. If the name of an executable is specified without any path
+	# components then the $PATH environment is searched to find a matching
+	# executable program.
+	tryexec="$(get TryExec "$1")"
+	if test -n "$tryexec"; then
+		command -v "$tryexec" | grep -v ^alias | grep -q / ||
+			return "$(die 7 "Error: TryExec command not found: $tryexec")"
+	fi
+	# If all these tests pass, we're ready to go
+	# XXX: probably won't do quoting properly
+	eprint "> $exec"
+	if $RUN; then
+		$exec &
+		print $! >>"$PID_FILE"
+	fi
+	:
+}
+
+auto_search() { ## auto_search
+	#  The Autostart Directories are $XDG_CONFIG_DIRS/autostart as defined
+	#  in accordance with the "Referencing this specification" section in
+	#  the "desktop base directory specification".
+	#
+	# If the same filename is located under multiple Autostart Directories
+	# only the file under the most important directory should be used.
+	#
+	# Example: If $XDG_CONFIG_HOME is not set the Autostart Directory in the
+	# user's home directory is ~/.config/autostart/
+	#
+	# Example: If $XDG_CONFIG_DIRS is not set the system wide Autostart
+	# Directory is /etc/xdg/autostart/
+	#
+	# Example: If $XDG_CONFIG_HOME and $XDG_CONFIG_DIRS are not set and the
+	# two files /etc/xdg/autostart/foo.desktop and
+	# ~/.config/autostart/foo.desktop exist then only the file
+	# ~/.config/autostart/foo.desktop will be used because
+	# ~/.config/autostart/ is more important than /etc/xdg/autostart/
+	echo "${XDG_CONFIG_HOME:-$HOME/.config}:${XDG_CONFIG_DIRS:-/etc/xdg}" | tr : \\n |
+		sed 's,$,/autostart,' |
+		while read dir; do
+			if test -d "$dir"; then
+				for desktop in "$dir"/*.desktop; do
+					if ! grep "$desktop" "$FOUND_FILE"; then
+						auto_start "$desktop" &&
+							print "$desktop" >>"$FOUND_FILE"
+					else
+						eprint "Already executed: $desktop"
+					fi
+				done
+			fi
+		done
+}
+
+####################################
+
+get() { # get KEY FILE
+	grep "^$1" "${2:-}" 2>/dev/null | cut -d= -f2-
+}
+
+print() {
+	$QUIET || printf '%s\n' "$*"
+}
+
+eprint() {
+	print "$@" >&2
+}
+
+die() {
+	errcode="$1"
+	shift
+	eprint "! $@"
+	echo $errcode
+	exit $errcode
+}
+
+####################################
+
+main "$@"
-- 
cgit 1.4.1-21-gabe81