kakserpom /
phpdaemon
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Connection often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Connection, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 14 | class Connection extends ClientConnection |
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| 15 | { |
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| 16 | /** |
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| 17 | * State: headers |
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| 18 | */ |
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| 19 | const STATE_HEADERS = 1; |
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| 20 | |||
| 21 | /** |
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| 22 | * State: body |
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| 23 | */ |
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| 24 | const STATE_BODY = 2; |
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| 25 | |||
| 26 | /** |
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| 27 | * @var array Associative array of headers |
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| 28 | */ |
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| 29 | public $headers = []; |
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| 30 | |||
| 31 | /** |
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| 32 | * @var integer Content length |
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| 33 | */ |
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| 34 | public $contentLength = -1; |
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| 35 | |||
| 36 | /** |
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| 37 | * @var string Contains response body |
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| 38 | */ |
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| 39 | public $body = ''; |
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| 40 | |||
| 41 | /** |
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| 42 | * @var string End of line |
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| 43 | */ |
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| 44 | protected $EOL = "\r\n"; |
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| 45 | |||
| 46 | /** |
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| 47 | * @var array Associative array of Cookies |
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| 48 | */ |
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| 49 | public $cookie = []; |
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| 50 | |||
| 51 | /** |
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| 52 | * @var integer Size of current chunk |
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| 53 | */ |
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| 54 | protected $curChunkSize; |
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| 55 | |||
| 56 | /** |
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| 57 | * @var string |
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| 58 | */ |
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| 59 | protected $curChunk; |
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| 60 | |||
| 61 | /** |
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| 62 | * @var boolean |
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| 63 | */ |
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| 64 | public $chunked = false; |
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| 65 | |||
| 66 | /** |
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| 67 | * @var callback |
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| 68 | */ |
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| 69 | public $chunkcb; |
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| 70 | |||
| 71 | /** |
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| 72 | * @var integer |
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| 73 | */ |
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| 74 | public $protocolError; |
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| 75 | |||
| 76 | /** |
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| 77 | * @var integer |
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| 78 | */ |
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| 79 | public $responseCode = 0; |
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| 80 | |||
| 81 | /** |
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| 82 | * @var string Last requested URL |
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| 83 | */ |
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| 84 | public $lastURL; |
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| 85 | |||
| 86 | /** |
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| 87 | * @var array Raw headers array |
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| 88 | */ |
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| 89 | public $rawHeaders = null; |
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| 90 | |||
| 91 | public $contentType; |
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| 92 | |||
| 93 | public $charset; |
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| 94 | |||
| 95 | public $eofTerminated = false; |
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| 96 | |||
| 97 | /** |
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| 98 | * @var \SplStack |
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| 99 | */ |
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| 100 | protected $requests; |
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| 101 | |||
| 102 | /** |
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| 103 | * @var string |
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| 104 | */ |
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| 105 | public $reqType; |
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| 106 | |||
| 107 | /** |
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| 108 | * Constructor |
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| 109 | */ |
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| 110 | protected function init() |
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| 111 | { |
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| 112 | $this->requests = new \SplStack; |
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| 113 | } |
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| 114 | |||
| 115 | /** |
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| 116 | * Send request headers |
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| 117 | * @param $type |
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| 118 | * @param $url |
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| 119 | * @param &$params |
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| 120 | * @return void |
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| 121 | */ |
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| 122 | protected function sendRequestHeaders($type, $url, &$params) |
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| 123 | { |
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| 124 | if (!is_array($params)) { |
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| 125 | $params = ['resultcb' => $params]; |
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| 126 | } |
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| 127 | if (!isset($params['uri']) || !isset($params['host'])) { |
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| 128 | $prepared = Pool::parseUrl($url); |
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| 129 | if (!$prepared) { |
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| 130 | if (isset($params['resultcb'])) { |
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| 131 | $params['resultcb'](false); |
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| 132 | } |
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| 133 | return; |
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| 134 | } |
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| 135 | list($params['host'], $params['uri']) = $prepared; |
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| 136 | } |
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| 137 | if ($params['uri'] === '') { |
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| 138 | $params['uri'] = '/'; |
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| 139 | } |
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| 140 | $this->lastURL = 'http://' . $params['host'] . $params['uri']; |
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| 141 | if (!isset($params['version'])) { |
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| 142 | $params['version'] = '1.1'; |
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| 143 | } |
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| 144 | $this->writeln($type . ' ' . $params['uri'] . ' HTTP/' . $params['version']); |
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| 145 | if (isset($params['proxy'])) { |
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| 146 | if (isset($params['proxy']['auth'])) { |
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| 147 | $this->writeln('Proxy-Authorization: basic ' . base64_encode($params['proxy']['auth']['username'] . ':' . $params['proxy']['auth']['password'])); |
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| 148 | } |
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| 149 | } |
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| 150 | $this->writeln('Host: ' . $params['host']); |
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| 151 | if ($this->pool->config->expose->value && !isset($params['headers']['User-Agent'])) { |
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| 152 | $this->writeln('User-Agent: phpDaemon/' . Daemon::$version); |
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| 153 | } |
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| 154 | if (isset($params['cookie']) && sizeof($params['cookie'])) { |
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| 155 | $this->writeln('Cookie: ' . http_build_query($params['cookie'], '', '; ')); |
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| 156 | } |
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| 157 | if (isset($params['contentType'])) { |
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| 158 | if (!isset($params['headers'])) { |
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| 159 | $params['headers'] = []; |
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| 160 | } |
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| 161 | $params['headers']['Content-Type'] = $params['contentType']; |
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| 162 | } |
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| 163 | if (isset($params['headers'])) { |
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| 164 | $this->customRequestHeaders($params['headers']); |
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| 165 | } |
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| 166 | if (isset($params['rawHeaders']) && $params['rawHeaders']) { |
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| 167 | $this->rawHeaders = []; |
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| 168 | } |
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| 169 | if (isset($params['chunkcb']) && is_callable($params['chunkcb'])) { |
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| 170 | $this->chunkcb = $params['chunkcb']; |
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| 171 | } |
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| 172 | $this->writeln(''); |
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| 173 | $this->requests->push($type); |
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| 174 | $this->onResponse->push($params['resultcb']); |
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| 175 | $this->checkFree(); |
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| 176 | } |
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| 177 | |||
| 178 | /** |
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| 179 | * Perform a HEAD request |
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| 180 | * @param string $url |
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| 181 | * @param array $params |
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| 182 | */ |
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| 183 | public function head($url, $params = null) |
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| 184 | { |
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| 185 | $this->sendRequestHeaders('HEAD', $url, $params); |
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| 186 | } |
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| 187 | |||
| 188 | /** |
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| 189 | * Perform a GET request |
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| 190 | * @param string $url |
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| 191 | * @param array $params |
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| 192 | */ |
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| 193 | public function get($url, $params = null) |
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| 194 | { |
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| 195 | $this->sendRequestHeaders('GET', $url, $params); |
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| 196 | } |
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| 197 | |||
| 198 | /** |
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| 199 | * @param array $headers |
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| 200 | */ |
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| 201 | protected function customRequestHeaders($headers) |
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| 202 | { |
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| 203 | foreach ($headers as $key => $item) { |
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| 204 | if (is_numeric($key)) { |
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| 205 | if (is_string($item)) { |
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| 206 | $this->writeln($item); |
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| 207 | } elseif (is_array($item)) { |
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| 208 | $this->writeln($item[0] . ': ' . $item[1]); // @TODO: prevent injections? |
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| 209 | } |
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| 210 | } else { |
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| 211 | $this->writeln($key . ': ' . $item); |
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| 212 | } |
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| 213 | } |
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| 214 | } |
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| 215 | |||
| 216 | /** |
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| 217 | * Perform a POST request |
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| 218 | * @param string $url |
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| 219 | * @param array $data |
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| 220 | * @param array $params |
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| 221 | */ |
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| 222 | public function post($url, $data = [], $params = null) |
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| 223 | { |
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| 224 | foreach ($data as $val) { |
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| 225 | if ($val instanceof UploadFile) { |
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| 226 | $params['contentType'] = 'multipart/form-data'; |
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| 227 | } |
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| 228 | } |
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| 229 | if (!isset($params['contentType'])) { |
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| 230 | $params['contentType'] = 'application/x-www-form-urlencoded'; |
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| 231 | } |
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| 232 | if ($params['contentType'] === 'application/x-www-form-urlencoded') { |
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| 233 | $body = http_build_query($data, '', '&', PHP_QUERY_RFC3986); |
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| 234 | } elseif ($params['contentType'] === 'application/x-json') { |
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| 235 | $body = json_encode($data); |
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| 236 | } else { |
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| 237 | $body = 'Unsupported Content-Type'; |
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| 238 | } |
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| 239 | if (!isset($params['headers'])) { |
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| 240 | $params['headers'] = []; |
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| 241 | } |
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| 242 | $params['headers']['Content-Length'] = mb_orig_strlen($body); |
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| 243 | $this->sendRequestHeaders('POST', $url, $params); |
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| 244 | $this->write($body); |
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| 245 | $this->writeln(''); |
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| 246 | } |
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| 247 | |||
| 248 | /** |
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| 249 | * Get body |
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| 250 | * @return string |
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| 251 | */ |
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| 252 | public function getBody() |
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| 256 | |||
| 257 | /** |
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| 258 | * Get headers |
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| 259 | * @return array |
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| 260 | */ |
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| 261 | public function getHeaders() |
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| 265 | |||
| 266 | /** |
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| 267 | * Get header |
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| 268 | * @param string $name Header name |
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| 269 | * @return string |
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| 270 | */ |
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| 271 | public function getHeader($name) |
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| 276 | |||
| 277 | /** |
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| 278 | * Called when new data received |
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| 279 | */ |
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| 280 | public function onRead() |
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| 281 | { |
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| 282 | if ($this->state === self::STATE_BODY) { |
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| 426 | |||
| 427 | /** |
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| 428 | * Called when connection finishes |
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| 429 | */ |
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| 430 | public function onFinish() |
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| 447 | |||
| 448 | /** |
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| 449 | * Called when request is finished |
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| 450 | */ |
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| 451 | protected function requestFinished() |
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| 471 | } |
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| 472 |
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Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line.