functions.ls

window <<<<

  isGradient: -> (it |> /^\s*([a-z]+)\-gradient\(\s*(.*)\s*\)\s*$/gmi.exec)?[1] in <[ linear radial ]>

  toFixedOrInt: (precision, value)-->
    a={}
    power = 10 `Math.pow` (precision or 0)
    value = Math.round(value * power) / power
    rounded = value |> Math.round
    if rounded is value then value = rounded
    value |> String

  toFixed: (precision, value)-->
    power = 10 `Math.pow` precision or 0
    (Math.round(value * power) / power) |> String

  compare: (f, x, y) -->
    | (f x) > (f y) =>  1
    | (f x) < (f y) => -1
    | otherwise     =>  0

  prop: (obj, path)-->
    prop=obj
    each path.split \., (o) ->
      if typeof! prop[o] is \Function then prop[o]() else prop = prop[o]
    prop

  normalizeEvent: (event)->
    if not event.offsetX?
      event <<<<
        offsetX: event.pageX - $(event.target).offset!.left
        offsetY: event.pageY - $(event.target).offset!.top
    event

  toDot: (obj, base = '')->
    result = {}
    if typeof! obj isnt \Object
      result[base] = obj
    else
      for key,val of obj
        result <<<< toDot val, "#base#{ if base then '.' else '' }#key"

    result

  toDash: (camel)-> camel.replace /([A-Z])/g, (letter)-> "-#{letter.toLowerCase!}"

  expand: (something)->

    if something |> $.isArray
      something |> Obj.map -> expand it
    else
      obj = {}
      $.each something, (dotpath,value)->
        path = ("#{dotpath}".split \.) |> reverse
        nested = obj
        while (key = path.pop!)
          nested = nested[key] =
            if path.length then
              if nested[key]? and  typeof! nested[key] isnt \Object
                console.log \expand:TYPE_WARNING:, something, key, nested[key]
              nested[key] or {}
            else
              if typeof! value is \Object
                result = value |> expand
              else
                value
      obj

  listTo: (fn, arr=[]) --> arr |> (map fn) |> listToObj

  between: (a,b,val) --> minimum [b, maximum [a, val]]

  indexIf: (arr,func) -->
    for i, el of arr
      if func(el)
        return i
    return -1


  deepClone: ->
    if typeof! it isnt \Object
      return it
    $.extend on, {}, it

  deepFilter: (f, xs) -->
    f = objToFunc f if typeof! f isnt \Function
    if typeof! xs is \Object
      { [key, (deepfilter f, x)] for key, x of xs when (typeof! x is \Object) or f x }
    else
      xs
      #result = [x for x in xs when f x]
      #if type is \String then result * '' else result

  isTextSelected: (input)->
     startPos = input.selectionStart
     endPos = input.selectionEnd
     doc = document.selection

     if doc and doc.createRange!.text.length isnt 0
        return yes
     else if not doc and ( input?.value?.substring startPos, endPos ).length isnt 0
        return yes
     no

  strDiff: (a,b)-->
    result = ''
    for x,i in a
      if a[i] != b[i]
        result += a[i]
    result

  arrDiff: (a, b)-->
    | not a.length or not b.length => {A : a, B : b}
    | a.length is b.length is 0 => no
    | _ => [ diff for i from 0 til maximum [ a.length, b.length ] | diff = objDiff(a[i], b[i]) ]


  deepFilterEmptyObj: (obj)->
    #if TEST =>
    #console.log \obj==, obj
    #console.log ( not obj? or (typeof! obj isnt \Object))
    #console.log ( Obj.empty obj )
    a=
      | not obj? or (typeof! obj isnt \Object) => obj
      | Obj.empty obj => {}
      | otherwise => {[key, val] for key,val of obj
                                        | ( (typeof! val isnt \Object) or
                                          not (Obj.empty deepFilterEmptyObj val) ) }

  objDiff: (A, B)-->
    recurse = (A,B)->
        | (not A?) and (not B?) => no
        | (typeof! A) isnt (typeof! B) => { A : A, B : B }
        | (typeof! A) is \Array => arrDiff A, B
        | (typeof! A) is \Object => { [ key, diff ] for key, val of A | diff = (recurse val, B[key]) }
        | A isnt B => "#{A} -> #{B}"
        | otherwise => {}

    result = recurse(A,B)

    a = if result.A? or result.B?
      result.A = (result.A or {} ) |> deepFilterEmptyObj |> toDot
      result.B = (result.B or {} ) |> deepFilterEmptyObj |> toDot
    else
      result |> deepFilterEmptyObj |> toDot

  #objDiff: (A, B, debug)->
    #recurse = (A,B)->

      #_=
        #| (not A?) or (not B?) => {}
        #| (typeof! A) isnt (typeof! B) => { 'A' : A, 'B' : B }
        #| (typeof! A) is \Array => arrDiff A, B
        #| (typeof! A) is \Object => { [ key, diff ] for key, val of A when diff = recurse val, B[key] }
        #| A isnt B => "#{A} -> #{B}"
        #| _ => {}

    #result = recurse(A,B)

    #result.A = (result.A |> deepFilterEmptyObj |> toDot) if result.A?
    #result.B = (result.B |> deepFilterEmptyObj |> toDot) if result.B?
    #result


  flat-with-keys: ->
    recurse = ->
      | it |> is-type \Object => it |> obj-to-pairs |> map -> [it.0, (it.1 |> recurse)]
      | _ => it
    it |> recurse |> flatten


  find-path-of: (something, object)-->
    recurse = (place)->
      _=
        | place is something => [ true ]
        | place |> is-type \Object => [ [k, path] for k, v of place when (path = recurse(v))?.length > 0 ]
        | place |> is-type \Array => [ [i, path] for i, v in place when (path = recurse(v))?.length > 0 ]
        | _ => false

    object |> recurse

  find-path-of-val-or-key: (something, object)-->
    recurse = (place)->
      _=
        | place is something => [ true ]
        | place |> is-type \Object => do ->
                              | (something in (place |> keys)) => [ true ]
                              | _ =>  [ [k, path] for k, v of place when (path = recurse(v))?.length > 0 ]
        | place |> is-type \Array => [ i for v, i in place when (path = recurse(v))?.length > 0 ]
        | _ => false

    object |> recurse

  filter-by-key: (fn, object) --> { [key, object[key]] for key in keys(object) when fn(key) }

  in-deep: (target, something) -->
    | something is target => true
    | something |> is-type \Array => something |> any -> target `in-deep` it
    | something |> is-type \Object => something |> values |> any -> target `in-deep` it
    | otherwise => no

  find-root: (target, object) -->
    return if typeof! object isnt \Object
    for key, val of object
      return key if target `in-deep` val
    return void