/home/kueuepay/www/vendor/ezyang/htmlpurifier/library/HTMLPurifier/LanguageFactory.php
<?php

/**
 * Class responsible for generating HTMLPurifier_Language objects, managing
 * caching and fallbacks.
 * @note Thanks to MediaWiki for the general logic, although this version
 *       has been entirely rewritten
 * @todo Serialized cache for languages
 */
class HTMLPurifier_LanguageFactory
{

    /**
     * Cache of language code information used to load HTMLPurifier_Language objects.
     * Structure is: $factory->cache[$language_code][$key] = $value
     * @type array
     */
    public $cache;

    /**
     * Valid keys in the HTMLPurifier_Language object. Designates which
     * variables to slurp out of a message file.
     * @type array
     */
    public $keys = array('fallback', 'messages', 'errorNames');

    /**
     * Instance to validate language codes.
     * @type HTMLPurifier_AttrDef_Lang
     *
     */
    protected $validator;

    /**
     * Cached copy of dirname(__FILE__), directory of current file without
     * trailing slash.
     * @type string
     */
    protected $dir;

    /**
     * Keys whose contents are a hash map and can be merged.
     * @type array
     */
    protected $mergeable_keys_map = array('messages' => true, 'errorNames' => true);

    /**
     * Keys whose contents are a list and can be merged.
     * @value array lookup
     */
    protected $mergeable_keys_list = array();

    /**
     * Retrieve sole instance of the factory.
     * @param HTMLPurifier_LanguageFactory $prototype Optional prototype to overload sole instance with,
     *                   or bool true to reset to default factory.
     * @return HTMLPurifier_LanguageFactory
     */
    public static function instance($prototype = null)
    {
        static $instance = null;
        if ($prototype !== null) {
            $instance = $prototype;
        } elseif ($instance === null || $prototype == true) {
            $instance = new HTMLPurifier_LanguageFactory();
            $instance->setup();
        }
        return $instance;
    }

    /**
     * Sets up the singleton, much like a constructor
     * @note Prevents people from getting this outside of the singleton
     */
    public function setup()
    {
        $this->validator = new HTMLPurifier_AttrDef_Lang();
        $this->dir = HTMLPURIFIER_PREFIX . '/HTMLPurifier';
    }

    /**
     * Creates a language object, handles class fallbacks
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @param bool|string $code Code to override configuration with. Private parameter.
     * @return HTMLPurifier_Language
     */
    public function create($config, $context, $code = false)
    {
        // validate language code
        if ($code === false) {
            $code = $this->validator->validate(
                $config->get('Core.Language'),
                $config,
                $context
            );
        } else {
            $code = $this->validator->validate($code, $config, $context);
        }
        if ($code === false) {
            $code = 'en'; // malformed code becomes English
        }

        $pcode = str_replace('-', '_', $code); // make valid PHP classname
        static $depth = 0; // recursion protection

        if ($code == 'en') {
            $lang = new HTMLPurifier_Language($config, $context);
        } else {
            $class = 'HTMLPurifier_Language_' . $pcode;
            $file  = $this->dir . '/Language/classes/' . $code . '.php';
            if (file_exists($file) || class_exists($class)) {
                $lang = new $class($config, $context);
            } else {
                // Go fallback
                $raw_fallback = $this->getFallbackFor($code);
                $fallback = $raw_fallback ? $raw_fallback : 'en';
                $depth++;
                $lang = $this->create($config, $context, $fallback);
                if (!$raw_fallback) {
                    $lang->error = true;
                }
                $depth--;
            }
        }
        $lang->code = $code;
        return $lang;
    }

    /**
     * Returns the fallback language for language
     * @note Loads the original language into cache
     * @param string $code language code
     * @return string|bool
     */
    public function getFallbackFor($code)
    {
        $this->loadLanguage($code);
        return $this->cache[$code]['fallback'];
    }

    /**
     * Loads language into the cache, handles message file and fallbacks
     * @param string $code language code
     */
    public function loadLanguage($code)
    {
        static $languages_seen = array(); // recursion guard

        // abort if we've already loaded it
        if (isset($this->cache[$code])) {
            return;
        }

        // generate filename
        $filename = $this->dir . '/Language/messages/' . $code . '.php';

        // default fallback : may be overwritten by the ensuing include
        $fallback = ($code != 'en') ? 'en' : false;

        // load primary localisation
        if (!file_exists($filename)) {
            // skip the include: will rely solely on fallback
            $filename = $this->dir . '/Language/messages/en.php';
            $cache = array();
        } else {
            include $filename;
            $cache = compact($this->keys);
        }

        // load fallback localisation
        if (!empty($fallback)) {

            // infinite recursion guard
            if (isset($languages_seen[$code])) {
                trigger_error(
                    'Circular fallback reference in language ' .
                    $code,
                    E_USER_ERROR
                );
                $fallback = 'en';
            }
            $language_seen[$code] = true;

            // load the fallback recursively
            $this->loadLanguage($fallback);
            $fallback_cache = $this->cache[$fallback];

            // merge fallback with current language
            foreach ($this->keys as $key) {
                if (isset($cache[$key]) && isset($fallback_cache[$key])) {
                    if (isset($this->mergeable_keys_map[$key])) {
                        $cache[$key] = $cache[$key] + $fallback_cache[$key];
                    } elseif (isset($this->mergeable_keys_list[$key])) {
                        $cache[$key] = array_merge($fallback_cache[$key], $cache[$key]);
                    }
                } else {
                    $cache[$key] = $fallback_cache[$key];
                }
            }
        }

        // save to cache for later retrieval
        $this->cache[$code] = $cache;
        return;
    }
}

// vim: et sw=4 sts=4
FAQ

FAQ

1. What is the Kueue Pay Payment Gateway?

The Kueue Pay Payment Gateway is an innovative technology that facilitates seamless and secure transactions between merchants and their customers. It enables businesses to accept debit and credit card payments both online and in physical stores.

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The Kueue Pay Developer API empowers developers and entrepreneurs to integrate the Kueue Pay Payment Gateway directly into their websites or applications. This streamlines the payment process for customers and provides businesses with a customizable and efficient payment solution.

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To access the Kueue Pay Developer API, you need to sign up for a developer account on our platform. Once registered, you’ll receive an API key that you can use to authenticate your API requests.

5. What types of transactions can I handle with the Kueue Pay Developer API?

The Kueue Pay Developer API allows you to initiate payments, check the status of payments, and process refunds. You can create a seamless payment experience for your customers while maintaining control over transaction management.

6. Is the Kueue Pay Developer API suitable for my business size and industry?

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7. How user-friendly is the Kueue Pay Developer API integration process?

The Kueue Pay Developer API is designed with simplicity and ease of use in mind. Our comprehensive documentation, code samples, and developer support resources ensure a smooth integration process for any web platform.

8. Are there any fees associated with using the Kueue Pay Payment Gateway and API?

We offer competitive pricing plans for using the Kueue Pay Payment Gateway and Developer API. Details about fees and pricing tiers can be found on our developer portal.

9. Can I customize the payment experience for my customers using the Kueue Pay API?

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10. What kind of support is available if I encounter issues during API integration?

We provide dedicated developer support to assist you with any issues or questions you may have during the API integration process. Reach out to our support team at developersupport@NFCPay.com for prompt assistance.

Remember, our goal is to empower your business with a robust and efficient payment solution. If you have any additional questions or concerns, feel free to explore our developer portal or contact our support team.