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| 1 | +<?php |
| 2 | + |
| 3 | +declare(strict_types=1); |
| 4 | + |
| 5 | +namespace Sylius\PayPalPlugin; |
| 6 | + |
| 7 | +/** |
| 8 | + * Code copied from https://github.com/Nyholm/append_query_string. |
| 9 | + */ |
| 10 | +final class UrlUtils |
| 11 | +{ |
| 12 | + public const APPEND_QUERY_STRING_IGNORE_DUPLICATE = 0; |
| 13 | + |
| 14 | + public const APPEND_QUERY_STRING_REPLACE_DUPLICATE = 1; |
| 15 | + |
| 16 | + public const APPEND_QUERY_STRING_SKIP_DUPLICATE = 2; |
| 17 | + |
| 18 | + private function __construct() |
| 19 | + { |
| 20 | + } |
| 21 | + |
| 22 | + /** |
| 23 | + * Add a query string to an existing URL. |
| 24 | + * |
| 25 | + * @param string $url The base URL. Example "https://nyholm.tech?biz=1" |
| 26 | + * @param string $queryString A string like "foo=bar&baz=2" |
| 27 | + * @param int $mode How to handle duplicate keys. See predefined constants above. |
| 28 | + * |
| 29 | + * @return string the resulting string |
| 30 | + */ |
| 31 | + public static function appendQueryString(string $url, string $queryString, int $mode = APPEND_QUERY_STRING_IGNORE_DUPLICATE): string |
| 32 | + { |
| 33 | + if ('' === $queryString) { |
| 34 | + return $url; |
| 35 | + } |
| 36 | + |
| 37 | + $existing = parse_url($url, \PHP_URL_QUERY); |
| 38 | + $fragment = parse_url($url, \PHP_URL_FRAGMENT); |
| 39 | + $fragment = $fragment ? '#' . $fragment : ''; |
| 40 | + |
| 41 | + // Remove fragment |
| 42 | + if (false !== strrpos($url, '#')) { |
| 43 | + $url = substr($url, 0, strrpos($url, '#')); |
| 44 | + } |
| 45 | + |
| 46 | + // If no existing query string |
| 47 | + if (empty($existing)) { |
| 48 | + // Check for "?" at the last character in $url |
| 49 | + $questionMark = '?'; |
| 50 | + if ('?' === $url[strlen($url) - 1]) { |
| 51 | + $questionMark = ''; |
| 52 | + } |
| 53 | + |
| 54 | + return $url . $questionMark . $queryString . $fragment; |
| 55 | + } |
| 56 | + |
| 57 | + // Remove query string from URL |
| 58 | + $result = substr($url, 0, strrpos($url, $existing) ?: 0); |
| 59 | + |
| 60 | + if (self::APPEND_QUERY_STRING_IGNORE_DUPLICATE === $mode) { |
| 61 | + $result .= $existing . '&' . $queryString; |
| 62 | + } else { |
| 63 | + preg_match_all('#([^&=]+)(=[^&]+)?#si', $existing, $existingArray); |
| 64 | + preg_match_all('#([^&=]+)(=[^&]+)?#si', $queryString, $queryStringArray); |
| 65 | + if (self::APPEND_QUERY_STRING_REPLACE_DUPLICATE === $mode) { |
| 66 | + $intersect = array_intersect($existingArray[1], $queryStringArray[1]); |
| 67 | + $keyMap = array_flip($queryStringArray[1]); |
| 68 | + foreach ($intersect as $key => $paramName) { |
| 69 | + $existing = str_replace($existingArray[0][$key], $queryStringArray[0][$keyMap[$paramName]], $existing); |
| 70 | + $queryString = str_replace($queryStringArray[0][$keyMap[$paramName]], '', $queryString); |
| 71 | + } |
| 72 | + } elseif (self::APPEND_QUERY_STRING_SKIP_DUPLICATE === $mode) { |
| 73 | + $intersect = array_intersect($queryStringArray[1], $existingArray[1]); |
| 74 | + foreach ($intersect as $key => $paramName) { |
| 75 | + $queryString = str_replace($queryStringArray[0][$key], '', $queryString); |
| 76 | + } |
| 77 | + } |
| 78 | + $result .= trim((string) preg_replace('#&&+#i', '&', $existing . '&' . $queryString), '&'); |
| 79 | + } |
| 80 | + |
| 81 | + // add fragment |
| 82 | + return $result . $fragment; |
| 83 | + } |
| 84 | +} |
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