xdg_alternative/xdg-open

#!/bin/sh
export log=/var/log/access_xdg.log
# if you dont want logging either change the log function or set that var to /dev/null
# might complain if this is not writable, in that case touch and chown the file
grep="egrep"
installed() {
	command -v $1 > /dev/null
	return $?
}
log() {
	echo "xdg: $1"
	echo "$1" >> $log
}
matches() {
	echo $string | "$grep" $1 > /dev/null
	return $?
}
choose() {
	# this check here so i can call choose with only the programm as arg
	if test -z $2 ; then
		"$1" $string > /dev/null &
	else
		"$@" > /dev/null &
	fi
	log "handle $1"
	exit 0
}
attempt() {
	if installed $1 ; then
		choose $1
	fi
	return 1
}
if installed rg ; then
	grep="rg"
fi
export string="$1"
log "recieve $string"
if matches "^http://" ; then
	log "redirect http:// > https://"
	string=${string#???????}
	string="https://$string"
fi
if matches "^/" ; then
	log "redirect / > file://"
	export string="file://$1"
fi
if matches "^file:///." ; then
	if installed feh && feh -U $string ; then
		choose feh
	else
		if installed alacritty && installed less ; then 
			#i came across a linux distro that didn't ship less by default, can you believe that?
			choose alacritty -e "less" "${string#???????}"
		fi
	fi
fi

if matches "^https://matrix.to/" ; then
	log "handle via matrix-handeler (nothing)"
	exit 10
fi
if matches "https://" ; then
	# fixme, should probably fetch the ressource first and then do the tests and use the local file..
	# though that might fataly confuse browsers since it is now a local ressourc
	if installed feh && feh -U $string ; then
		choose feh
	elif installed mpv && installed youtube-dl && youtube-dl -s $string > /dev/null ; then
		choose mpv --volume=70 --no-terminal $string
	else
		attempt chrome
		attempt chromium
		attempt netsurf
		attempt firefox
	fi
fi
if installed steam && matches "^steam://"; then
	choose steam
fi

log "handle via nothing (no handler found)"
exit 255