JWX\Util\Base64

Complexity

Total Complexity

13

Size/Duplication

Total Lines	96
Duplicated Lines	9.38 %

Coupling/Cohesion

Components	0
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes	5
Bugs	1	Features	3

6 Methods

Rating	Name	Duplication	Size	Complexity
A	urlEncode()	0	3	1
A	urlDecode()	0	16	4
A	isValidURLEncoding()	0	3	1
A	encode()	9	9	3
A	decode()	0	9	3
A	isValid()	0	3	1

<?php

namespace JWX\Util;


/**
 * Class offering Base64 encoding and decoding.
 */
class Base64
{
	/**
	 * Encode a string using base64url variant.
	 *
	 * @link https://en.wikipedia.org/wiki/Base64#URL_applications
	 * @param string $data
	 * @return string
	 */
	public static function urlEncode($data) {
		return strtr(rtrim(self::encode($data), "="), "+/", "-_");
	}
	
	/**
	 * Decode a string using base64url variant.
	 *
	 * @link https://en.wikipedia.org/wiki/Base64#URL_applications
	 * @param string $data
	 * @throws \UnexpectedValueException
	 * @return string
	 */
	public static function urlDecode($data) {
		$data = strtr($data, "-_", "+/");
		switch (strlen($data) % 4) {
		case 0:
			break;
		case 2:
			$data .= "==";
			break;
		case 3:
			$data .= "=";
			break;
		default:
			throw new \UnexpectedValueException("Malformed base64url encoding.");
		}
		return self::decode($data);
	}
	
	/**
	 * Check whether string is validly base64url encoded.
	 *
	 * @link https://en.wikipedia.org/wiki/Base64#URL_applications
	 * @param string $data
	 * @return bool
	 */
	public static function isValidURLEncoding($data) {
		return preg_match('#^[A-Za-z0-9\-_]*$#', $data) == 1;
	}
	
	/**
	 * Encode a string in base64.
	 *
	 * @link https://tools.ietf.org/html/rfc4648#section-4
	 * @param string $data
	 * @throws \RuntimeException If encoding fails
	 * @return string
	 */
	public static function encode($data) {

This method seems to be duplicated in your project.

		$ret = @base64_encode($data);
		if (!is_string($ret)) {
			$err = error_get_last();
			$msg = isset($err) ? $err["message"] : "base64_encode() failed.";
			throw new \RuntimeException($msg);
		}
		return $ret;
	}
	
	/**
	 * Decode a string from base64 encoding.
	 *
	 * @link https://tools.ietf.org/html/rfc4648#section-4
	 * @param string $data
	 * @throws \RuntimeException If decoding fails
	 * @return string
	 */
	public static function decode($data) {
		$ret = base64_decode($data, true);
		if (!is_string($ret)) {
			$err = error_get_last();
			$msg = isset($err) ? $err["message"] : "base64_decode() failed.";
			throw new \RuntimeException($msg);
		}
		return $ret;
	}
	
	/**
	 * Check whether string is validly base64 encoded.
	 *
	 * @link https://tools.ietf.org/html/rfc4648#section-4
	 * @param string $data
	 * @return bool
	 */
	public static function isValid($data) {
		return preg_match('#^[A-Za-z0-9+/]*={0,2}$#', $data) == 1;
	}
}