A shell script for Tot

tot.sh

#!/bin/bash

# Fork of Gruber's mod of CHOCK's original tot.sh that adds support for
# dot "0" to target the first empty dot. What's different? I fixed all
# the bugs identified by ShellCheck: https://www.shellcheck.net/
# https://gist.github.com/chockenberry/d33ef5b6e6da4a3e4aa9b07b093d3c23

basename=$(basename "$0")

if [ -z "$*" ]; then
	echo "usage: ${basename} <dot> [ -o | -r | <file> | - ]"
	echo ""
	echo "options:"
	echo "  -o      open dot in window with keyboard focus"
	echo "  -r      read contents of dot"
	echo "  -c      clear contents of dot"
	echo "  <file>  append contents of regular file to dot"
	echo "  -       append standard input to dot"
	echo ""
	echo "examples:"
	echo "  $ cal -h | tot 1 -    # put a calendar in first dot"
	echo "  $ tot 2 MyApp.crash   # put a crash report in second dot"
	echo "  $ date | tot 0 -      # put a timestamp in first empty dot"
	echo ""
	exit 1
fi

dot="$1"
if [ -z "$2" ]; then
	echo "error: no dot action specified"
	exit 1
else
	if [ "$dot" = "0" ]; then
		# dot 0: first empty dot; error if no dots are empty
		for testdot in {1..7}
		do
			content=$(osascript -e "tell application \"Tot\" to open location \"tot://${testdot}/content\"")
			# Matching whitespace-only strings in Bash: https://stackoverflow.com/questions/9767644/
			if ! [[ $content =~ [^[:space:]] ]]; then
				# testdot is the first empty dot
				dot=$testdot
				# clear contents of dot, in case there's whitespace:
				osascript -e "tell application \"Tot\" to open location \"tot://${dot}/replace?text=\""
				break
			fi
		done
		if [ "$dot" = "0" ]; then
			echo "error: no empty dots"
			exit 1
		fi
	fi

	if [ "$2" = "-o" ]; then
		# open dot
		osascript -e "tell application \"Tot\" to open location \"tot://${dot}\""
		osascript -e "tell application \"Tot\" to activate"
	elif [ "$2" = "-r" ]; then
		# get contents of dot
		osascript -e "tell application \"Tot\" to open location \"tot://${dot}/content\""
	elif [ "$2" = "-c" ]; then
		# clear contents of dot
		osascript -e "tell application \"Tot\" to open location \"tot://${dot}/replace?text=\""
	else
		# append file or stdin to dot
		if [ "$2" = "-" ]; then
			FILE=$(mktemp -t "$basename") || exit 1
			cat /dev/stdin > "$FILE"
		else 	
			if [ -f "$2" ]; then
				FILE="$2"
			else
				echo "error: not a regular file"
				exit 1
			fi
		fi

		text=$(python -c 'import urllib; import sys; print urllib.quote(sys.stdin.read())' < "$FILE")
		osascript -e "tell application \"Tot\" to open location \"tot://${dot}/append?text=${text}\""
	fi
fi