Initial open source commit

app/coffee/OutputFileFinder.coffee

@@ -0,0 +1,58 @@
+async = require "async"
+fs = require "fs"
+Path = require "path"
+wrench = require "wrench"
+
+module.exports = OutputFileFinder =
+	findOutputFiles: (resources, directory, callback = (error, outputFiles) ->) ->
+		incomingResources = {}
+		for resource in resources
+			incomingResources[resource.path] = true
+
+		OutputFileFinder._getAllFiles directory, (error, allFiles) ->
+			jobs = []
+			outputFiles = []
+			for file in allFiles
+				do (file) ->
+					jobs.push (callback) ->
+						if incomingResources[file.path]
+							return callback()
+						else
+							OutputFileFinder._isDirectory Path.join(directory, file.path), (error, directory) ->
+								return callback(error) if error?
+								if !directory
+									outputFiles.push file
+								callback()
+
+			async.series jobs, (error) ->
+				return callback(error) if error?
+				callback null, outputFiles
+
+	_isDirectory: (path, callback = (error, directory) ->) ->
+		fs.stat path, (error, stat) ->
+			callback error, stat?.isDirectory()
+
+	_getAllFiles: (directory, _callback = (error, outputFiles) ->) ->
+		callback = (error, outputFiles) ->
+			_callback(error, outputFiles)
+			_callback = () ->
+
+		outputFiles = []
+
+		wrench.readdirRecursive directory, (error, files) =>
+			if error?
+				if error.code == "ENOENT"
+					# Directory doesn't exist, which is not a problem
+					return callback(null, [])
+				else
+					return callback(error)
+
+			# readdirRecursive returns multiple times and finishes with a null response
+			if !files?
+				return callback(null, outputFiles)
+
+			for file in files
+				outputFiles.push
+					path: file
+					type: file.match(/\.([^\.]+)$/)?[1]
+