From cfe9c3f37cae3d50d757faa5338a9b7cef30af16 Mon Sep 17 00:00:00 2001
From: Joey Schulze <joey@infodrom.org>
Date: Sat, 13 Jul 2019 00:21:27 +0200
Subject: [PATCH 1/1] Some utility functions

---
 class/utils.class.php | 52 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 class/utils.class.php

diff --git a/class/utils.class.php b/class/utils.class.php
new file mode 100644
index 0000000..32e182e
--- /dev/null
+++ b/class/utils.class.php
@@ -0,0 +1,52 @@
+<?php
+
+class Utils
+{
+    public static function isAJAX()
+    {
+	if (array_key_exists('HTTP_X_REQUESTED_WITH', $_SERVER) &&
+	    $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest')
+	    return true;
+
+	return false;
+    }
+
+    public static function assertIsoDate($date)
+    {
+	if (strlen($date) > 0) {
+	    $datum = explode (".", $date);
+
+	    if (count($datum) > 1) {
+		if (strlen($datum[1]) == 0) {
+		    $datum[1] = date ("m");
+		}
+		if (strlen($datum[2]) == 0) {
+		    if ($datum[1] == '12' && date('m') == '1')
+			$datum[2] = date ("Y", time() - 60*60*24*(date('d')+1));
+		    else
+			$datum[2] = date ("Y");
+		} elseif (strlen($datum[2]) == 1) {
+		    $datum[2] = "200" . $datum[2];
+		} elseif (strlen($datum[2]) == 2) {
+		    $datum[2] = "20" . $datum[2];
+		}
+
+		$date = $datum[2] . "-" . $datum[1] . "-" . $datum[0];
+	    }
+	} else {
+	    $date = date("Y-m-d");
+	}
+	return $date;
+    }
+
+    public static function assertGermanDate($datum)
+    {
+	if (strpos($datum, '.') !== false)
+	    return $datum;
+
+	$date = explode(" ", $datum);
+	$date = explode("-", $date[0]);
+	$out = sprintf("%d.%d.%d", $date[2], $date[1], $date[0]);
+	return $out;
+    }
+}
-- 
2.20.1