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<?php |
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/** |
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* PHP REST Client |
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* https://github.com/tcdent/php-restclient |
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* (c) 2013-2017 Travis Dent <[email protected]> |
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*/ |
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namespace Ballybran\Core\Http; |
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class RestClientException extends \Exception {} |
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class RestClient implements \Iterator, \ArrayAccess { |
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public $options; |
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public $handle; // cURL resource handle. |
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// Populated after execution: |
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public $response; // Response body. |
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public $headers; // Parsed reponse header object. |
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public $info; // Response info object. |
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public $error; // Response error string. |
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public $response_status_lines; // indexed array of raw HTTP response status lines. |
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// Populated as-needed. |
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public $decoded_response; // Decoded response body. |
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public function __construct($options=[]){ |
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$default_options = [ |
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'headers' => [], |
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'parameters' => [], |
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'curl_options' => [], |
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'build_indexed_queries' => FALSE, |
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'user_agent' => "PHP RestClient/0.1.7", |
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'base_url' => NULL, |
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'format' => NULL, |
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'format_regex' => "/(\w+)\/(\w+)(;[.+])?/", |
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'decoders' => [ |
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'json' => 'json_decode', |
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'php' => 'unserialize' |
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], |
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'username' => NULL, |
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'password' => NULL |
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]; |
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$this->options = array_merge($default_options, $options); |
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if(array_key_exists('decoders', $options)) |
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$this->options['decoders'] = array_merge( |
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$default_options['decoders'], $options['decoders']); |
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} |
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public function set_option($key, $value){ |
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$this->options[$key] = $value; |
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} |
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public function register_decoder($format, $method){ |
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// Decoder callbacks must adhere to the following pattern: |
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// array my_decoder(string $data) |
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$this->options['decoders'][$format] = $method; |
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} |
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// Iterable methods: |
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public function rewind(){ |
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$this->decode_response(); |
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return reset($this->decoded_response); |
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} |
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public function current(){ |
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return current($this->decoded_response); |
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} |
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public function key(){ |
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return key($this->decoded_response); |
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} |
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public function next(){ |
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return next($this->decoded_response); |
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} |
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public function valid(){ |
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return is_array($this->decoded_response) |
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&& (key($this->decoded_response) !== NULL); |
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} |
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// ArrayAccess methods: |
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public function offsetExists($key){ |
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$this->decode_response(); |
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return is_array($this->decoded_response)? |
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isset($this->decoded_response[$key]) : isset($this->decoded_response->{$key}); |
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} |
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public function offsetGet($key){ |
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$this->decode_response(); |
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if(!$this->offsetExists($key)) |
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return NULL; |
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return is_array($this->decoded_response)? |
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$this->decoded_response[$key] : $this->decoded_response->{$key}; |
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} |
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public function offsetSet($key, $value){ |
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throw new RestClientException("Decoded response data is immutable."); |
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} |
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public function offsetUnset($key){ |
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throw new RestClientException("Decoded response data is immutable."); |
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} |
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// Request methods: |
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public function get($url, $parameters=[], $headers=[]){ |
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return $this->execute($url, 'GET', $parameters, $headers); |
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} |
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public function post($url, $parameters=[], $headers=[]){ |
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return $this->execute($url, 'POST', $parameters, $headers); |
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} |
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public function put($url, $parameters=[], $headers=[]){ |
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return $this->execute($url, 'PUT', $parameters, $headers); |
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} |
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public function patch($url, $parameters=[], $headers=[]){ |
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return $this->execute($url, 'PATCH', $parameters, $headers); |
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} |
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public function delete($url, $parameters=[], $headers=[]){ |
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return $this->execute($url, 'DELETE', $parameters, $headers); |
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} |
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public function head($url, $parameters=[], $headers=[]){ |
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return $this->execute($url, 'HEAD', $parameters, $headers); |
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} |
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public function execute($url, $method='GET', $parameters=[], $headers=[]){ |
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$client = clone $this; |
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$client->url = $url; |
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$client->handle = curl_init(); |
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$curlopt = [ |
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CURLOPT_HEADER => TRUE, |
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CURLOPT_RETURNTRANSFER => TRUE, |
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CURLOPT_USERAGENT => $client->options['user_agent'] |
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]; |
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if($client->options['username'] && $client->options['password']) |
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$curlopt[CURLOPT_USERPWD] = sprintf("%s:%s", |
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$client->options['username'], $client->options['password']); |
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if(count($client->options['headers']) || count($headers)){ |
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$curlopt[CURLOPT_HTTPHEADER] = []; |
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$headers = array_merge($client->options['headers'], $headers); |
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foreach($headers as $key => $values){ |
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foreach(is_array($values)? $values : [$values] as $value){ |
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$curlopt[CURLOPT_HTTPHEADER][] = sprintf("%s:%s", $key, $value); |
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} |
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} |
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} |
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if($client->options['format']) |
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$client->url .= '.'.$client->options['format']; |
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// Allow passing parameters as a pre-encoded string (or something that |
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// allows casting to a string). Parameters passed as strings will not be |
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// merged with parameters specified in the default options. |
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if(is_array($parameters)){ |
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$parameters = array_merge($client->options['parameters'], $parameters); |
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$parameters_string = http_build_query($parameters); |
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// http_build_query automatically adds an array index to repeated |
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// parameters which is not desirable on most systems. This hack |
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// reverts "key[0]=foo&key[1]=bar" to "key[]=foo&key[]=bar" |
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if(!$client->options['build_indexed_queries']) |
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$parameters_string = preg_replace( |
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"/%5B[0-9]+%5D=/simU", "%5B%5D=", $parameters_string); |
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} |
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else |
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$parameters_string = (string) $parameters; |
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if(strtoupper($method) == 'POST'){ |
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$curlopt[CURLOPT_POST] = TRUE; |
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$curlopt[CURLOPT_POSTFIELDS] = $parameters_string; |
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} |
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elseif(strtoupper($method) == 'HEAD'){ |
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$curlopt[CURLOPT_NOBODY] = TRUE; |
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} |
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elseif(strtoupper($method) != 'GET'){ |
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$curlopt[CURLOPT_CUSTOMREQUEST] = strtoupper($method); |
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$curlopt[CURLOPT_POSTFIELDS] = $parameters_string; |
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} |
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elseif($parameters_string){ |
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$client->url .= strpos($client->url, '?')? '&' : '?'; |
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$client->url .= $parameters_string; |
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} |
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if($client->options['base_url']){ |
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if($client->url[0] != '/' && substr($client->options['base_url'], -1) != '/') |
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$client->url = '/' . $client->url; |
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$client->url = $client->options['base_url'] . $client->url; |
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} |
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$curlopt[CURLOPT_URL] = $client->url; |
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if($client->options['curl_options']){ |
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// array_merge would reset our numeric keys. |
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foreach($client->options['curl_options'] as $key => $value){ |
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$curlopt[$key] = $value; |
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} |
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} |
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curl_setopt_array($client->handle, $curlopt); |
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$client->parse_response(curl_exec($client->handle)); |
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$client->info = (object) curl_getinfo($client->handle); |
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$client->error = curl_error($client->handle); |
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curl_close($client->handle); |
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return $client; |
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} |
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public function parse_response($response){ |
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$headers = []; |
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$this->response_status_lines = []; |
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$line = strtok($response, "\n"); |
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do { |
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if(strlen(trim($line)) == 0){ |
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// Since we tokenize on \n, use the remaining \r to detect empty lines. |
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if(count($headers) > 0) break; // Must be the newline after headers, move on to response body |
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} |
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elseif(strpos($line, 'HTTP') === 0){ |
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// One or more HTTP status lines |
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$this->response_status_lines[] = trim($line); |
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} |
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else { |
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// Has to be a header |
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list($key, $value) = explode(':', $line, 2); |
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$key = trim(strtolower(str_replace('-', '_', $key))); |
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$value = trim($value); |
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if(empty($headers[$key])) |
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$headers[$key] = $value; |
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elseif(is_array($headers[$key])) |
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$headers[$key][] = $value; |
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else |
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$headers[$key] = [$headers[$key], $value]; |
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} |
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} while($line = strtok("\n")); |
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$this->headers = (object) $headers; |
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$this->response = strtok(""); |
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} |
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public function get_response_format(){ |
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if(!$this->response) |
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throw new RestClientException( |
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"A response must exist before it can be decoded."); |
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// User-defined format. |
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if(!empty($this->options['format'])) |
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return $this->options['format']; |
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// Extract format from response content-type header. |
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if(!empty($this->headers->content_type)) |
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if(preg_match($this->options['format_regex'], $this->headers->content_type, $matches)) |
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return $matches[2]; |
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throw new RestClientException( |
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"Response format could not be determined."); |
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} |
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public function decode_response(){ |
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if(empty($this->decoded_response)){ |
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$format = $this->get_response_format(); |
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if(!array_key_exists($format, $this->options['decoders'])) |
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throw new RestClientException("'${format}' is not a supported ". |
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"format, register a decoder to handle this response."); |
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$this->decoded_response = call_user_func( |
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$this->options['decoders'][$format], $this->response); |
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} |
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return $this->decoded_response; |
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} |
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} |
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