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<?php declare(strict_types=1); |
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/** |
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* It's free open-source software released under the MIT License. |
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* |
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* @author Anatoly Nekhay <[email protected]> |
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* @copyright Copyright (c) 2018, Anatoly Nekhay |
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* @license https://github.com/sunrise-php/http-message/blob/master/LICENSE |
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* @link https://github.com/sunrise-php/http-message |
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*/ |
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namespace Sunrise\Http\Message; |
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/** |
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* Import functions |
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*/ |
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use function uasort; |
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/** |
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* Parses the given Accept header |
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* |
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* @param string $header |
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* |
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* @return array<string, array<string, string>> |
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*/ |
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function header_accept_parse(string $header): array |
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{ |
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static $cache = []; |
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if (isset($cache[$header])) { |
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return $cache[$header]; |
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} |
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$cursor = -1; |
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$cursorInValue = true; |
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$cursorInParameter = false; |
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$cursorInParameterName = false; |
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$cursorInParameterValue = false; |
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$cursorInQuotedParameterValue = false; |
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$data = []; |
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$valueIndex = 0; |
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$parameterIndex = 0; |
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while (true) { |
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$char = $header[++$cursor] ?? null; |
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$prev = $header[$cursor-1] ?? null; |
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$next = $header[$cursor+1] ?? null; |
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if ($char === null) { |
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break; |
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} |
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if ($char === ' ' && !$cursorInQuotedParameterValue) { |
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continue; |
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} |
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if ($char === ',' && !$cursorInQuotedParameterValue) { |
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$cursorInValue = true; |
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$cursorInParameter = false; |
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$cursorInParameterName = false; |
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$cursorInParameterValue = false; |
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$cursorInQuotedParameterValue = false; |
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$parameterIndex = 0; |
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$valueIndex++; |
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continue; |
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} |
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if ($char === ';' && !$cursorInQuotedParameterValue) { |
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$cursorInValue = false; |
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$cursorInParameter = true; |
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$cursorInParameterName = true; |
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$cursorInParameterValue = false; |
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$cursorInQuotedParameterValue = false; |
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$parameterIndex++; |
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continue; |
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} |
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if ($char === '=' && !$cursorInQuotedParameterValue && $cursorInParameterName) { |
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$cursorInValue = false; |
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$cursorInParameter = true; |
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$cursorInParameterName = false; |
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$cursorInParameterValue = true; |
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$cursorInQuotedParameterValue = false; |
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continue; |
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} |
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if ($char === '"' && !$cursorInQuotedParameterValue && $cursorInParameterValue) { |
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$cursorInQuotedParameterValue = true; |
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continue; |
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} |
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if ($char === '\\' && $next === '"' && $cursorInQuotedParameterValue) { |
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continue; |
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} |
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if ($char === '"' && $prev !== '\\' && $cursorInQuotedParameterValue) { |
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$cursorInParameterValue = false; |
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$cursorInQuotedParameterValue = false; |
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continue; |
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} |
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if ($cursorInValue) { |
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$data[$valueIndex][0] ??= ''; |
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$data[$valueIndex][0] .= $char; |
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continue; |
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} |
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if ($cursorInParameterName && isset($data[$valueIndex][0])) { |
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$data[$valueIndex][1][$parameterIndex][0] ??= ''; |
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$data[$valueIndex][1][$parameterIndex][0] .= $char; |
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continue; |
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} |
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if ($cursorInParameterValue && isset($data[$valueIndex][1][$parameterIndex][0])) { |
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$data[$valueIndex][1][$parameterIndex][1] ??= ''; |
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$data[$valueIndex][1][$parameterIndex][1] .= $char; |
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continue; |
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} |
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} |
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$result = []; |
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foreach ($data as $item) { |
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$result[$item[0]] = []; |
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if (isset($item[1])) { |
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foreach ($item[1] as $param) { |
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$result[$item[0]][$param[0]] = $param[1] ?? ''; |
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} |
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} |
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} |
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uasort($result, fn(array $a, array $b): int => ($b['q'] ?? 1) <=> ($a['q'] ?? 1)); |
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return $cache[$header] = $result; |
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} |
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sunrise-php /
http-message
