refactor(CDateRangePicker): move utilities to a separate file

Author: mrholek

js/src/date-range-picker.js

@@ -13,7 +13,8 @@ import EventHandler from './dom/event-handler.js'
 import Manipulator from './dom/manipulator.js'
 import SelectorEngine from './dom/selector-engine.js'
 import { defineJQueryPlugin, getElement, isRTL } from './util/index.js'
-import { convertToDateObject, getLocalDateFromString } from './util/calendar.js'
+import { convertToDateObject } from './util/calendar.js'
+import { getLocalDateFromString } from './util/date-range-picker.js'
 
 /**
  * Constants

js/src/util/date-range-picker.js

@@ -0,0 +1,32 @@
+export const getLocalDateFromString = (string, locale, time) => {
+  const date = new Date(2013, 11, 31, 17, 19, 22)
+  let regex = time ? date.toLocaleString(locale) : date.toLocaleDateString(locale)
+  regex = regex
+        .replace('2013', '(?<year>[0-9]{2,4})')
+        .replace('12', '(?<month>[0-9]{1,2})')
+        .replace('31', '(?<day>[0-9]{1,2})')
+  if (time) {
+    regex = regex
+            .replace('5', '(?<hour>[0-9]{1,2})')
+            .replace('17', '(?<hour>[0-9]{1,2})')
+            .replace('19', '(?<minute>[0-9]{1,2})')
+            .replace('22', '(?<second>[0-9]{1,2})')
+            .replace('PM', '(?<ampm>[A-Z]{2})')
+  }
+
+  const rgx = new RegExp(`${regex}`)
+  const partials = string.match(rgx)
+  if (partials === null) {
+    return
+  }
+
+  const newDate = partials.groups &&
+        (time ?
+          new Date(Number(partials.groups.year, 10), Number(partials.groups.month, 10) - 1, Number(partials.groups.day), partials.groups.ampm ?
+            (partials.groups.ampm === 'PM' ?
+              Number(partials.groups.hour) + 12 :
+              Number(partials.groups.hour)) :
+            Number(partials.groups.hour), Number(partials.groups.minute), Number(partials.groups.second)) :
+          new Date(Number(partials.groups.year), Number(partials.groups.month) - 1, Number(partials.groups.day)))
+  return newDate
+}