84 lines
2.1 KiB
PHP
84 lines
2.1 KiB
PHP
<?php
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/*
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* This file is part of the JsonSchema package.
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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 JsonSchema\Uri\Retrievers;
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use JsonSchema\Exception\RuntimeException;
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use JsonSchema\Validator;
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/**
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* Tries to retrieve JSON schemas from a URI using cURL library
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*
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* @author Sander Coolen <sander@jibber.nl>
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*/
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class Curl extends AbstractRetriever
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{
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protected $messageBody;
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public function __construct()
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{
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if (!function_exists('curl_init')) {
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// Cannot test this, because curl_init is present on all test platforms plus mock
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throw new RuntimeException('cURL not installed'); // @codeCoverageIgnore
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}
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}
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/**
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* {@inheritdoc}
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*
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* @see \JsonSchema\Uri\Retrievers\UriRetrieverInterface::retrieve()
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*/
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public function retrieve($uri)
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{
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $uri);
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curl_setopt($ch, CURLOPT_HEADER, true);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: ' . Validator::SCHEMA_MEDIA_TYPE));
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$response = curl_exec($ch);
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if (false === $response) {
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throw new \JsonSchema\Exception\ResourceNotFoundException('JSON schema not found');
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}
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$this->fetchMessageBody($response);
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$this->fetchContentType($response);
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curl_close($ch);
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return $this->messageBody;
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}
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/**
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* @param string $response cURL HTTP response
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*/
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private function fetchMessageBody($response)
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{
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preg_match("/(?:\r\n){2}(.*)$/ms", $response, $match);
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$this->messageBody = $match[1];
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}
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/**
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* @param string $response cURL HTTP response
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*
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* @return bool Whether the Content-Type header was found or not
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*/
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protected function fetchContentType($response)
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{
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if (0 < preg_match("/Content-Type:(\V*)/ims", $response, $match)) {
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$this->contentType = trim($match[1]);
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return true;
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}
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return false;
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}
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}
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