Completed
Push — master ( 1162ff...7d91ca )
by Colin
04:14
created

UrlEncoder::decode()   A

Complexity

Conditions 2
Paths 1

Duplication

Lines 0
Ratio 0 %

Size

Total Lines 14
Code Lines 7

Code Coverage

Tests 7
CRAP Score 2

Importance

Changes 0
Metric Value
dl 0
loc 14
ccs 7
cts 7
cp 1
rs 9.4285
c 0
b 0
f 0
cc 2
eloc 7
nc 1
nop 1
crap 2
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<?php
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/*
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 * This file is part of the league/commonmark package.
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 *
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 * (c) Colin O'Dell <[email protected]>
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 *
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 * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
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 *  - (c) John MacFarlane
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace League\CommonMark\Util;
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class UrlEncoder
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{
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    protected static $dontEncode = [
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        '%21' => '!',
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        '%23' => '#',
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        '%24' => '$',
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        '%26' => '&',
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        '%27' => '\'',
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        '%28' => '(',
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        '%29' => ')',
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        '%2A' => '*',
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        '%2B' => '+',
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        '%2C' => ',',
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        '%2D' => '-',
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        '%2E' => '.',
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        '%2F' => '/',
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        '%3A' => ':',
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        '%3B' => ';',
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        '%3D' => '=',
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        '%3F' => '?',
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        '%40' => '@',
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        '%5F' => '_',
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        '%7E' => '~',
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    ];
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    /**
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     * @param string $uri
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     *
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     * @return string
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     */
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    public static function unescapeAndEncode($uri)
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    {
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        $decoded = html_entity_decode($uri);
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        return self::encode(self::decode($decoded));
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    }
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    /**
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     * Decode a percent-encoded URI
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     *
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     * @param string $uri
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     *
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     * @return string
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     */
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    private static function decode($uri)
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    {
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        return preg_replace_callback('/%([0-9a-f]{2})/iu', function($matches) {
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            // Convert percent-encoded codes to uppercase
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            $upper = strtoupper($matches[0]);
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            // Keep excluded characters as-is
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            if (array_key_exists($upper, self::$dontEncode)) {
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                return $upper;
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            }
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            // Otherwise, return the character for this codepoint
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            return chr(hexdec($matches[1]));
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        }, $uri);
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    }
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    /**
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     * Encode a URI, preserving already-encoded and excluded characters
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     *
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     * @param string $uri
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     *
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     * @return string
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     */
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    private static function encode($uri)
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    {
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        return preg_replace_callback('/(%[0-9a-f]{2})|./iu', function($matches){
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            // Keep already-encoded characters as-is
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            if (count($matches) > 1) {
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                return $matches[0];
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            }
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            // Keep excluded characters as-is
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            if (in_array($matches[0], self::$dontEncode)) {
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                return $matches[0];
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            }
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            // Otherwise, encode the character
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            return rawurlencode($matches[0]);
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        }, $uri);
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    }
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}
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