<?php
/**
 * Magento 2 Google Analytics 4 (GA4) GTM
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Anowave license that is
 * available through the world-wide-web at this URL:
 * https://www.anowave.com/license-agreement/
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade this extension to newer
 * version in the future.
 *
 * @category 	Anowave
 * @package 	Anowave_Ec
 * @copyright 	Copyright (c) 2026 Anowave (https://www.anowave.com/)
 * @license  	https://www.anowave.com/license-agreement/
 */

namespace Anowave\Ec\vendor\Google;

class Utils
{
    public static function urlSafeB64Encode($data)
    {
        $b64 = base64_encode($data);
        $b64 = str_replace(array(
            '+',
            '/',
            '\r',
            '\n',
            '='
        ) , array(
            '-',
            '_'
        ) , $b64);
        return $b64;
    }
    
    public static function urlSafeB64Decode($b64)
    {
        $b64 = str_replace(array(
            '-',
            '_'
        ) , array(
            '+',
            '/'
        ) , $b64);
        return base64_decode($b64);
    }
    
    /**
     * Misc function used to count the number of bytes in a post body, in the
     * world of multi-byte chars and the unpredictability of
     * strlen/mb_strlen/sizeof, this is the only way to do that in a sane
     * manner at the moment.
     *
     * This algorithm was originally developed for the
     * Solar Framework by Paul M. Jones
     *
     * @link   http://solarphp.com/
     * @link   http://svn.solarphp.com/core/trunk/Solar/Json.php
     * @link   http://framework.zend.com/svn/framework/standard/trunk/library/Zend/Json/Decoder.php
     * @param  string $str
     * @return int The number of bytes in a string.
     */
    public static function getStrLen($str)
    {
        $strlenVar = strlen($str);
        $d = $ret = 0;
        for ($count = 0;$count < $strlenVar;++$count)
        {
            $ordinalValue = ord($str[$ret]);
            switch (true)
            {
                case (($ordinalValue >= 0x20) && ($ordinalValue <= 0x7F)):
                    // characters U-00000000 - U-0000007F (same as ASCII)
                    $ret++;
                    break;
                case (($ordinalValue & 0xE0) == 0xC0):
                    // characters U-00000080 - U-000007FF, mask 110XXXXX
                    // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                    $ret += 2;
                    break;
                case (($ordinalValue & 0xF0) == 0xE0):
                    // characters U-00000800 - U-0000FFFF, mask 1110XXXX
                    // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                    $ret += 3;
                    break;
                case (($ordinalValue & 0xF8) == 0xF0):
                    // characters U-00010000 - U-001FFFFF, mask 11110XXX
                    // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                    $ret += 4;
                    break;
                case (($ordinalValue & 0xFC) == 0xF8):
                    // characters U-00200000 - U-03FFFFFF, mask 111110XX
                    // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                    $ret += 5;
                    break;
                case (($ordinalValue & 0xFE) == 0xFC):
                    // characters U-04000000 - U-7FFFFFFF, mask 1111110X
                    // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                    $ret += 6;
                    break;
                default:
                    $ret++;
            }
        }
        return $ret;
    }
    
    /**
     * Normalize all keys in an array to lower-case.
     * @param array $arr
     * @return array Normalized array.
     */
    public static function normalize($arr)
    {
        if (!is_array($arr))
        {
            return array();
        }
        
        $normalized = array();
        foreach ($arr as $key => $val)
        {
            $normalized[strtolower($key) ] = $val;
        }
        return $normalized;
    }
    
    /**
     * Convert a string to camelCase
     * @param  string $value
     * @return string
     */
    public static function camelCase($value)
    {
        $value = ucwords(str_replace(array(
            '-',
            '_'
        ) , ' ', $value));
        $value = str_replace(' ', '', $value);
        $value[0] = strtolower($value[0]);
        return $value;
    }
}