League\Uri\Transcoder

Complexity

Total Complexity

4

Size/Duplication

Total Lines	53
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	encode()	0	14	1
A	decode()	0	17	3

<?php
/**
 * League.Uri (http://uri.thephpleague.com)
 *
 * @package   League.uri
 * @author    Ignace Nyamagana Butera <nyamsprod@gmail.com>
 * @copyright 2013-2015 Ignace Nyamagana Butera
 * @license   https://github.com/thephpleague/uri/blob/master/LICENSE (MIT License)
 * @version   4.2.0
 * @link      https://github.com/thephpleague/uri/
 */
namespace League\Uri;

/**
 * a class to encode or decode Query and Fragment components
 *
 * @package League.uri
 * @author  Ignace Nyamagana Butera <nyamsprod@gmail.com>
 * @since   4.2.0
 */
class Transcoder
{
    const REGEXP_CHARACTERS_RESERVED = "/(?:[^\!\$&'\(\)\*\+,;\=\:\?\/@%]+|%(?![A-Fa-f0-9]{2}))/S";

    const REGEXP_CHARACTERS_ENCODED = ',%(?<encode>[0-9a-fA-F]{2}),';

    /**
     * Encode a string according to RFC3986 Rules
     *
     * @param string $subject
     *
     * @return string
     */
    public function encode($subject)
    {
        $encoder = function (array $matches) {
            return rawurlencode($matches[0]);
        };

        $formatter = function (array $matches) {
            return strtoupper($matches[0]);
        };

        $subject = preg_replace_callback(self::REGEXP_CHARACTERS_RESERVED, $encoder, $subject);

        return preg_replace_callback(self::REGEXP_CHARACTERS_ENCODED, $formatter, $subject);
    }

    /**
     * Decode a string according to RFC3986 Rules
     *
     * @param string $subject
     *
     * @return string
     */
    public function decode($subject)
    {
        return preg_replace_callback(self::REGEXP_CHARACTERS_ENCODED, function ($matches) {

            $decode = chr(hexdec($matches['encode']));
            if (preg_match('/[\w|\._~]+/', $decode)) {
                return strtoupper($matches[0]);
            }

            if (preg_match('/[\[\]\+\?:]+/', $decode)) {
                return $decode;
            }

            return rawurldecode($matches[0]);

        }, $this->encode($subject));
    }
}