Carefree CoffeeScript Auto-compiler

coffeemaker

#!/bin/bash
#
# --------------------------------------------------------------------------------------
# http://blog.gantrithor.com/post/12535461464/carefree-coffeescript-auto-compiler-part-3
# --------------------------------------------------------------------------------------

DIR_ROOT="$(cd "$(dirname "$0")" && pwd)"

function compile_tree() {
	find "$1" -name "*.coffee" -type f | while read PATH_COFFEE; do
		DIR_JS="$(dirname "${PATH_COFFEE/#$DIR_ROOT\/public\/coffeescripts/$DIR_ROOT/public/javascripts}")"
		FILE_JS="$(basename "${PATH_COFFEE/%.coffee/.js}")"
		
		echo "--------------------------------"
		echo "    $2"
		coffee -o "$DIR_JS" -c "$PATH_COFFEE"
		echo "    $PATH_COFFEE"
		echo "==> $DIR_JS/$FILE_JS"
	done
}

if [[ "$1" == "--all" ]]; then
	compile_tree "$DIR_ROOT/public/coffeescripts" "`date '+%F %T'`"
else
	inotifywait -m -r --timefmt '%F %T' --format '%w☀%f☀%e☀%T' -e ATTRIB,MOVE,CLOSE "$DIR_ROOT/public/coffeescripts" | while read LINE; do
		IFS=☀ read -a ARRAY <<< "$LINE"
		
		######## Safety Precautions ########
		# If ${ARRAY[0]} doesn't contain $DIR_ROOT it means something is seriously fubar'd #
		if [[ "${ARRAY[0]#$DIR_ROOT}" == "${ARRAY[0]}" ]]; then
			continue
		fi
		
		# Do us no good if it's empty anyway #
		if [[ "${ARRAY[1]}" == "" ]]; then
			continue
		fi
		######## Safety Precautions ########
		
		EVENT="${ARRAY[2]}"
		TIME="${ARRAY[3]}"
		
		if [[ "$EVENT" == *ISDIR* ]]; then
			DIR_COFFEE="${ARRAY[0]}${ARRAY[1]}"
			DIR_JS="${ARRAY[0]/#$DIR_ROOT\/public\/coffeescripts/$DIR_ROOT/public/javascripts}${ARRAY[1]}"
			
			case "$EVENT" in
				# Moving Directories #
				*MOVED_TO*)
					compile_tree "${ARRAY[0]}${ARRAY[1]}" "$TIME / $EVENT"
				;;
				# Trashing Directories #
				*MOVED_FROM*)
					# No `rm -rf` for Safety #
					echo "--------------------------------"
					echo "    $TIME / $EVENT"
					find "$DIR_JS" -name "*.js" -type f -delete
					echo " X  $DIR_JS"
					find "$DIR_JS" -type d -depth -empty -exec rmdir "{}" \;
				;;
			esac
		elif [[ "${ARRAY[1]}" == *.coffee ]]; then
			DIR_COFFEE="${ARRAY[0]%}"
			DIR_JS="${ARRAY[0]/#$DIR_ROOT\/public\/coffeescripts/$DIR_ROOT/public/javascripts}"
			FILE_COFFEE="${ARRAY[1]}"
			FILE_JS="${ARRAY[1]/%.coffee/.js}"
			
			case "$EVENT" in
				# Copying Directories; Copying/Creating/Moving Files #
				*ATTRIB*|*CLOSE_WRITE*|*MOVED_TO*)
					echo "--------------------------------"
					echo "    $TIME / $EVENT"
					coffee -o "$DIR_JS" -c "$DIR_COFFEE$FILE_COFFEE"
					echo "    $DIR_COFFEE$FILE_COFFEE"
					echo "==> $DIR_JS$FILE_JS"
				;;
				# Trashing Files #
				*MOVED_FROM*)
					echo "--------------------------------"
					echo "    $TIME / $EVENT"
					rm "$DIR_JS$FILE_JS"
					echo " X  $DIR_JS$FILE_JS"
					rmdir "$DIR_JS"
				;;
			esac
		else
			continue
		fi
	done
fi