Gruntで更新のあったファイルだけFTPする

Gruntfile.coffee

module.exports = (grunt) ->
	grunt.loadNpmTasks 'grunt-contrib-watch'
	grunt.loadNpmTasks 'grunt-ftp-deploy'

	ftpSettings =
		auth: 
			host: "hogehoge.com"
			port: 21
			authKey: "hogehogekey"
		src: "www"
		dest: "/public_html/dest"
		exclusions: ['**/.DS_Store', '**/*.*']


	grunt.initConfig
		watch:
			ftp:
				files: [ 'www/**/*' ]
				tasks: ['ftp-deploy:changed']
				options:
					nospawn: true


		'ftp-deploy':

			changed:
				# auth: '<%= ftp-deploy.build.auth %>'
				auth: ftpSettings.auth
				src: ftpSettings.src
				dest: ftpSettings.dest
				exclusions: ftpSettings.exclusions


	grunt.registerTask 'w', ['watch:ftp']

	grunt.event.on "watch", (action, filepath) ->
		if action != 'changed'
			return 

		target = '!' + filepath

		exclusions = ftpSettings.exclusions.concat()
		exclusions.push(target)

		grunt.config.set 'ftp-deploy:changed:exclusions', exclusions

	return