Bash wrapper for inotify

inotify-watcher.sh

#!/bin/sh
#
# inotify-watcher.sh -- Monitor a folder for file changes
#
# This is a wrapper around inotify, intended to make it easier to quickly
# spin up directory watchers.  To activate watching for a particular event, 
# comment and fill out the appropriate `inotify_XXXX` function.
#
inotify_close_write() {
	# File closed after writing ("saved") and ready to be processed.
	#
#	initiate_transcription_flow $1 $2
}

#inotify_create() {}
#inotify_access() {}
#inotify_ignored() {}
#inotify_open() {}
#inotify_attrib() {}
#inotify_modify() {}
#inotify_close_nowrite() {}
#inotify_moved_from() {}
#inotify_moved_to() {}
#inotify_delete() {}
#inotify_delete_self() {}

# NO EDITING NEEDED BELOW THIS LINE

##############################################################################
# MAIN
#
if [[ $# -eq 0 ]] ; then
	echo "$0 path/to/directory/to/watch"
	exit 0
fi

# array of possible actions
inotify_events_master=(
	create
	access
	ignored
	open
	attrib
	modify
	close_write
	close_nowrite
	moved_from
	moved_to
	delete
	delete_self
)
# array of active actions
inotify_events=()

# figure out which actions have functions, and activate those
for event in "${inotify_events_master[@]}"; do
	if declare -F "inotify_${event,,}" > /dev/null; then
		inotify_events+=("${event,,}")
	fi
done

events=$(IFS=,; echo "${inotify_events[*]}")

echo Monitoring "$actions" events in "$1" ...

# move to the parent of the directory you want to search
pushd $(dirname "$1")

# main loop, watching $1 for any $inotify_actions[]
inotifywait -q -m \
    -e "$events" "$1" \
	--timefmt '%Y-%m-%dT%H:%M:%S' \
	--format '%T %w %f %e' \
| while read datetime dir filename event; do
	echo "${datetime}: ${dir}${filename} $event"
	eval "inotify_${event,,} \"${dir}\" \"${filename}\""
done

popd