- Adds import's step 1 method selection logic

lib/Util/Helpers.php

@@ -0,0 +1,100 @@
+<?php
+namespace MailPoet\Util;
+
+/*
+ * Matches each symbol of PHP date format standard
+ * with jQuery equivalent codeword
+ * @author Tristan Jahier
+ */
+function dateformat_PHP_to_jQueryUI($php_format) {
+  $SYMBOLS_MATCHING = array(
+    // Day
+    'd' => 'dd',
+    'D' => 'D',
+    'j' => 'd',
+    'l' => 'DD',
+    'N' => '',
+    'S' => '',
+    'w' => '',
+    'z' => 'o',
+    // Week
+    'W' => '',
+    // Month
+    'F' => 'MM',
+    'm' => 'mm',
+    'M' => 'M',
+    'n' => 'm',
+    't' => '',
+    // Year
+    'L' => '',
+    'o' => '',
+    'Y' => 'yy',
+    'y' => 'y',
+    // Time
+    'a' => '',
+    'A' => '',
+    'B' => '',
+    'g' => '',
+    'G' => '',
+    'h' => '',
+    'H' => '',
+    'i' => '',
+    's' => '',
+    'u' => ''
+  );
+  $jqueryui_format = "";
+  $escaping = false;
+  for ($i = 0; $i < strlen($php_format); $i++) {
+    $char = $php_format[$i];
+    if($char === '\\') // PHP date format escaping character
+    {
+      $i++;
+      if($escaping) {
+        $jqueryui_format .= $php_format[$i];
+      } else {
+        $jqueryui_format .= '\'' . $php_format[$i];
+      }
+      $escaping = true;
+    } else {
+      if($escaping) {
+        $jqueryui_format .= "'";
+        $escaping = false;
+      }
+      if(isset($SYMBOLS_MATCHING[$char])) {
+        $jqueryui_format .= $SYMBOLS_MATCHING[$char];
+      } else {
+        $jqueryui_format .= $char;
+      }
+    }
+  }
+
+  return $jqueryui_format;
+}
+
+/*
+ * Determine maximum post size in bytes
+ */
+function get_maximum_post_size() {
+  $maximum_post_size = ini_get('post_max_size');
+  $maximum_post_size_bytes = (int) $maximum_post_size;
+  $unit = strtolower($maximum_post_size[strlen($maximum_post_size) - 1]);
+  switch ($unit) {
+  case 'g':
+    $maximum_post_size_bytes *= 1024;
+  case 'm':
+    $maximum_post_size_bytes *= 1024;
+  case 'k':
+    $maximum_post_size_bytes *= 1024;
+  }
+
+  return $maximum_post_size_bytes;
+}
+
+/*
+ * Flatten multidimensional array
+ */
+function flatten_array($array) {
+  return call_user_func_array(
+    'array_merge_recursive', array_map('array_values', $array)
+  );
+}