termux-notification: add --help-actions

fixes #37
This commit is contained in:
Alessandro Caputo 2019-08-08 15:28:48 +02:00
parent bb832a5182
commit 60af0488db

View File

@ -5,6 +5,7 @@ SCRIPTNAME=termux-notification
show_usage () {
echo "Usage: termux-notification [options]"
echo "Display a system notification. Content text is specified using -c/--content or read from stdin."
echo "Please read --help-actions for help with action arguments."
echo " --action action action to execute when pressing the notification"
echo " --alert-once do not alert when the notification is edited"
echo " --button1 text text to show on the first notification button"
@ -16,6 +17,7 @@ show_usage () {
echo " -c/--content content content to show in the notification. Will take precedence over stdin."
echo " --group group notification group (notifications with the same group are shown together)"
echo " -h/--help show this help"
echo " --help-actions show the help for actions"
echo " -i/--id id notification id (will overwrite any previous notification with the same id)"
echo " --image-path path absolute path to an image which will be shown in the notification"
echo " --led-color rrggbb color of the blinking led as RRGGBB (default: none)"
@ -36,6 +38,28 @@ show_usage () {
exit 0
}
show_help_actions () {
echo "This help refers to the arguments to options like --action, --on-delete, --button-1-action and --media-next."
echo
echo "All these commands take an action string as their argument, which is fed to \`dash -c\`."
echo "A few important things must be kept in mind when using actions:"
echo
echo "You should use actions that do things outside of the terminal, like --action \"termux-toast hello\"."
echo "Anything that outputs to the terminal is useless, so the output should either be redirected (--action \"ls > ~/ls.txt\") or shown to the user in a different way (--action \"ls|termux-toast\")."
echo
echo "Running more than one command in a single action is as easy as"
echo "--action \"command1; command2; command3\""
echo "or"
echo "--action \"if [ -e file ]; then termux-toast yes; else termux-toast no; fi\"."
echo
echo "For anything more complex, you should put your script in a file, make it executable, and use that as the action:"
echo "--action ~/bin/script"
echo
echo "The action is run in a different environment (not a subshell). Thus your environment is lost (most notably \$PATH), and ~/.profile is not sourced either. So if you need your \$PATH you should either:"
echo " - if the action is a script, set it explicitly in the script (e.g. export PATH=\"\$HOME/bin:\$PATH\")"
echo " - or use something like --action \"bash -l -c 'command1; command2'\")."
}
OPT_ACTION=""
OPT_ALERT_ONCE=""
OPT_BUTTON1_ACTION=""
@ -70,7 +94,7 @@ TEMP=`busybox getopt \
button1:,button1-action:,\
button2:,button2-action:,\
button3:,button3-action:,\
content:,group:,help,id:,image-path:\
content:,group:,help,help-actions,id:,image-path:\
led-color:,led-on:,led-off:,\
media-previous:,media-next:,media-play:,media-pause:,\
on-delete:,ongoing,\
@ -93,6 +117,7 @@ while true; do
-c | --content) OPT_CONTENT="$2"; shift 2;;
--group) OPT_GROUP="$2"; shift 2;;
-h | --help) show_usage;;
--help-actions) show_help_actions; exit 0;;
-i | --id) OPT_ID="$2"; shift 2;;
--image-path) OPT_IMAGE_PATH="$2"; shift 2;;
--led-color) OPT_LED_COLOR="$2"; shift 2;;