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<?php |
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namespace Psr7Middlewares\Transformers; |
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use Psr\Http\Message\StreamInterface; |
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use DomainException; |
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/** |
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* Generic resolver to parse the body content. |
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*/ |
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class BodyParser extends Resolver |
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{ |
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/** @var mixed[] */ |
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private $options = [ |
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// When true, returned objects will be converted into associative arrays. |
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'forceArray' => true, |
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]; |
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/** |
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* BodyParser constructor. |
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* |
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* @param mixed[] $options |
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*/ |
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public function __construct(array $options = []) |
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{ |
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$this->add('application/json', [$this, 'json']); |
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$this->add('application/x-www-form-urlencoded', [$this, 'urlencode']); |
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$this->add('text/csv', [$this, 'csv']); |
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$this->options = array_merge($this->options, $options); |
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} |
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/** |
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* @param string $id |
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* |
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* @return callable|null |
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*/ |
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public function resolve($id) |
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{ |
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foreach ($this->transformers as $contentType => $transformer) { |
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if (stripos($id, $contentType) === 0) { |
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return $transformer; |
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} |
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} |
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} |
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/** |
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* JSON parser. |
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* |
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* @param StreamInterface $body |
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* |
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* @return array|object Returns an array when $assoc is true, and an object when $assoc is false |
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*/ |
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public function json(StreamInterface $body) |
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{ |
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$assoc = (bool) $this->options['forceArray']; |
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$string = (string) $body; |
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if ($string === '') { |
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return []; |
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} |
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$data = json_decode($string, $assoc); |
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if (json_last_error() !== JSON_ERROR_NONE) { |
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throw new DomainException(json_last_error_msg()); |
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} |
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return $data ?: []; |
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} |
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/** |
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* Parses url-encoded strings. |
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* |
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* @param StreamInterface $body |
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* |
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* @return array |
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*/ |
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public function urlencode(StreamInterface $body) |
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{ |
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parse_str((string) $body, $data); |
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return $data ?: []; |
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} |
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/** |
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* Parses csv strings. |
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* |
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* @param StreamInterface $body |
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* |
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* @return array |
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*/ |
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public function csv(StreamInterface $body) |
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{ |
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if ($body->isSeekable()) { |
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$body->rewind(); |
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} |
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$stream = $body->detach(); |
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$data = []; |
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while (($row = fgetcsv($stream)) !== false) { |
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$data[] = $row; |
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} |
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fclose($stream); |
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return $data; |
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} |
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} |
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oscarotero /
psr7-middlewares
