initial commit

Classes/Utility/EvalcoordinatesUtility.php

@@ -0,0 +1,95 @@
+<?php
+declare(strict_types=1);
+
+namespace A2G\A2gTravelBlog\Utility;
+
+/**
+ * This file is part of the "tt_address" Extension for TYPO3 CMS.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+/**
+ * Class EvalcoordinatesUtility
+ */
+class EvalcoordinatesUtility
+{
+    const LATITUDE_UPPER = '90.00000000';
+    const LONGITUDE_UPPER = '180.00000000';
+
+    /**
+     * @param float $coordinate
+     * @return float evaluated and well-formed coordinate
+     */
+    public static function formatLongitude(float $coordinate)
+    {
+        return self::validate((string)$coordinate, self::LONGITUDE_UPPER);
+    }
+
+    /**
+     * @param float $coordinate
+     * @return float evaluated and well-formed coordinate
+     */
+    public static function formatLatitude(float $coordinate)
+    {
+        return self::validate((string)$coordinate, self::LATITUDE_UPPER);
+    }
+
+    /**
+     * @param string $coordinate
+     * @param string $upperRange
+     * @return string
+     */
+    protected static function validate($coordinate, string $upperRange): string
+    {
+        if ($coordinate === '') {
+            return '.00000000';
+        }
+
+        // test if value is negative
+        $negative = '';
+        if ($coordinate[0] === '-') {
+            $negative = '-';
+        }
+        // remove all chars not being digits and point
+        // therefore we will get a number
+        $coordinate = preg_replace("/[^\d\.]/", '', $coordinate);
+
+        // split up string at first occurrence decimal point without losing data
+        $integerPart = strstr($coordinate, '.', true);
+        $decimalPart = strstr($coordinate, '.');
+
+        // if coordinate is given as integer (no decimal point)
+        if ($integerPart === false) {
+            $integerPart = $coordinate;
+        }
+        if ($decimalPart === false) {
+            $decimalPart = '00';
+        }
+
+        // remove all points from decimal-part
+        $decimalPart = preg_replace("/[^\d]/", '', $decimalPart);
+
+        // fill up with zeros or shorten to match our goal of decimal(latitude: 10,8 and longitude: 11,8) in DB
+        if (\strlen($decimalPart) >= 8) {
+            $decimalPart = substr($decimalPart, 0, 8);
+        } else {
+            $decimalPart = str_pad($decimalPart, 8, '0', STR_PAD_RIGHT);
+        }
+
+        // concatenate the whole string to a well-formed longitude and return
+        $coordinate = $integerPart . '.' . $decimalPart;
+
+        // test if value is in the possible range. longitude can be -180 to +180.
+        // latitude can be -90 to +90
+        // At this point, our minus, if there, is stored to 'negative'
+        // therefore we just test if integerpart is bigger than 90
+        if ($coordinate > $upperRange) {
+            $coordinate = $upperRange;
+        }
+
+        // reapply signed/unsigned and return
+        return $negative . $coordinate;
+    }
+}