noflo/src/lib/Utils.coffee

Flow-Based Programming environment for JavaScript

#     NoFlo - Flow-Based Programming for JavaScript
#     (c) 2014 TheGrid (Rituwall Inc.)
#     NoFlo may be freely distributed under the MIT license
#
# Generic object clone. From CS cookbook
clone = (obj) ->
  if not obj? or typeof obj isnt 'object'
    return obj

  if obj instanceof Date
    return new Date(obj.getTime())

  if obj instanceof RegExp
    flags = ''
    flags += 'g' if obj.global?
    flags += 'i' if obj.ignoreCase?
    flags += 'm' if obj.multiline?
    flags += 'y' if obj.sticky?
    return new RegExp(obj.source, flags)

  newInstance = new obj.constructor()

  for key of obj
    newInstance[key] = clone obj[key]

  return newInstance

# Guess language from filename
guessLanguageFromFilename = (filename) ->
  return 'coffeescript' if /.*\.coffee$/.test filename
  return 'javascript'

exports.clone = clone
exports.guessLanguageFromFilename = guessLanguageFromFilename