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72 lines
2.1 KiB
PHP
72 lines
2.1 KiB
PHP
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<?php
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namespace GuzzleHttp\Psr7;
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final class Header
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{
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/**
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* Parse an array of header values containing ";" separated data into an
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* array of associative arrays representing the header key value pair data
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* of the header. When a parameter does not contain a value, but just
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* contains a key, this function will inject a key with a '' string value.
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*
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* @param string|array $header Header to parse into components.
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*
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* @return array Returns the parsed header values.
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*/
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public static function parse($header)
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{
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static $trimmed = "\"' \n\t\r";
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$params = $matches = [];
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foreach (self::normalize($header) as $val) {
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$part = [];
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foreach (preg_split('/;(?=([^"]*"[^"]*")*[^"]*$)/', $val) as $kvp) {
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if (preg_match_all('/<[^>]+>|[^=]+/', $kvp, $matches)) {
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$m = $matches[0];
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if (isset($m[1])) {
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$part[trim($m[0], $trimmed)] = trim($m[1], $trimmed);
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} else {
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$part[] = trim($m[0], $trimmed);
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}
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}
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}
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if ($part) {
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$params[] = $part;
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}
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}
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return $params;
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}
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/**
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* Converts an array of header values that may contain comma separated
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* headers into an array of headers with no comma separated values.
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*
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* @param string|array $header Header to normalize.
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*
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* @return array Returns the normalized header field values.
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*/
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public static function normalize($header)
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{
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if (!is_array($header)) {
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return array_map('trim', explode(',', $header));
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}
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$result = [];
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foreach ($header as $value) {
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foreach ((array) $value as $v) {
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if (strpos($v, ',') === false) {
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$result[] = $v;
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continue;
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}
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foreach (preg_split('/,(?=([^"]*"[^"]*")*[^"]*$)/', $v) as $vv) {
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$result[] = trim($vv);
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}
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}
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}
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return $result;
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}
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}
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