Complex classes like Input 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 Input, and based on these observations, apply Extract Interface, too.
1 | <?php |
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12 | class Input extends \EventBuffer |
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13 | { |
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14 | use \PHPDaemon\Traits\ClassWatchdog; |
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15 | use \PHPDaemon\Traits\StaticObjectWatchdog; |
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16 | |||
17 | /** |
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18 | * State: seek nearest boundary |
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19 | */ |
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20 | const STATE_SEEKBOUNDARY = 0; |
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21 | /** |
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22 | * State: headers |
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23 | */ |
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24 | const STATE_HEADERS = 1; |
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25 | /** |
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26 | * State: body |
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27 | */ |
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28 | const STATE_BODY = 2; |
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29 | /** |
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30 | * State: upload |
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31 | */ |
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32 | const STATE_UPLOAD = 3; |
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33 | /** |
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34 | * @var array Current Part |
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35 | */ |
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36 | public $curPart; |
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37 | /** |
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38 | * @var string Boundary |
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39 | */ |
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40 | protected $boundary; |
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41 | /** |
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42 | * @var integer Maximum file size from multi-part query |
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43 | */ |
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44 | protected $maxFileSize = 0; |
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45 | /** |
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46 | * @var integer Readed |
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47 | */ |
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48 | protected $readed = 0; |
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49 | /** |
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50 | * @var boolean Frozen |
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51 | */ |
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52 | protected $frozen = false; |
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53 | /** |
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54 | * @var boolean EOF |
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55 | */ |
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56 | protected $EOF = false; |
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57 | /** |
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58 | * @var array Content dispostion of current Part |
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59 | */ |
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60 | protected $curPartDisp = false; |
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61 | /** |
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62 | * @var Generic Related Request |
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63 | */ |
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64 | protected $req; |
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65 | /** |
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66 | * @var integer (self::STATE_*) State of multi-part processor |
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67 | */ |
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68 | protected $state = self::STATE_SEEKBOUNDARY; |
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69 | /** |
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70 | * @var integer Size of current upload chunk |
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71 | */ |
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72 | protected $curChunkSize; |
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73 | |||
74 | /** |
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75 | * Set boundary |
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76 | * @param string $boundary Boundary |
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77 | * @return void |
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78 | */ |
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79 | public function setBoundary($boundary) |
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83 | |||
84 | /** |
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85 | * Freeze input |
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86 | * @param boolean $at_front At front. Default is true. If the front of a buffer is frozen, operations that drain data from the front of the buffer, or that prepend data to the buffer, will fail until it is unfrozen. If the back a buffer is frozen, operations that append data from the buffer will fail until it is unfrozen |
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87 | * @return void |
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88 | */ |
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89 | public function freeze($at_front = false) |
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94 | |||
95 | /** |
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96 | * Unfreeze input |
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97 | * @param boolean $at_front At front. Default is true. If the front of a buffer is frozen, operations that drain data from the front of the buffer, or that prepend data to the buffer, will fail until it is unfrozen. If the back a buffer is frozen, operations that append data from the buffer will fail until it is unfrozen |
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98 | * @return void |
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99 | */ |
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100 | public function unfreeze($at_front = false) |
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111 | |||
112 | /** |
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113 | * onRead |
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114 | * @return void |
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115 | */ |
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116 | protected function onRead() |
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125 | |||
126 | /** |
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127 | * Send EOF |
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128 | * @return void |
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129 | */ |
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130 | public function sendEOF() |
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137 | |||
138 | /** |
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139 | * onEOF |
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140 | * @return void |
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141 | */ |
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142 | protected function onEOF() |
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168 | |||
169 | /** |
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170 | * Is frozen? |
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171 | * @return boolean |
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172 | */ |
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173 | public function isFrozen() |
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177 | |||
178 | /** |
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179 | * Is EOF? |
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180 | * @return boolean |
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181 | */ |
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182 | public function isEof() |
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186 | |||
187 | /** |
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188 | * Set request |
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189 | * @param Generic $req Request |
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190 | * @return void |
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191 | */ |
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192 | public function setRequest(Generic $req) |
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196 | |||
197 | /** |
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198 | * Moves $n bytes from input buffer to arbitrary buffer |
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199 | * @param \EventBuffer $buf Source nuffer |
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200 | * @return integer |
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201 | */ |
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202 | public function readFromBuffer(\EventBuffer $buf) |
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220 | |||
221 | /** |
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222 | * Append string to input buffer |
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223 | * @param string $chunk Piece of request input |
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224 | * @param boolean $final Final call is THIS SEQUENCE of calls (not mandatory final in request)? |
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225 | * @return void |
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226 | */ |
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227 | public function readFromString($chunk, $final = true) |
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235 | |||
236 | |||
237 | /** |
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238 | * Read from buffer without draining |
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239 | * @param integer $n Number of bytes to read |
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240 | * @param integer $o Offset |
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241 | * @return string |
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242 | */ |
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243 | public function look($n, $o = 0) |
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250 | |||
251 | |||
252 | /** |
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253 | * Parses multipart |
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254 | * @return void |
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255 | */ |
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256 | public function parseMultipart() |
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395 | |||
396 | /** |
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397 | * Log |
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398 | * @param string $msg Message |
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399 | * @return void |
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400 | */ |
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401 | public function log($msg) |
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405 | |||
406 | /** |
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407 | * Get current upload chunk as string |
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408 | * @return string Chunk body |
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409 | */ |
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410 | public function getChunkString() |
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419 | |||
420 | /** |
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421 | * Write current upload chunk to file descriptor |
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422 | * @todo It is not supported yet (callback missing in EventBuffer->write()) |
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423 | * @param mixed $fd File destriptor |
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424 | * @param callable $cb Callback |
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425 | * @return boolean Success |
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426 | */ |
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427 | public function writeChunkToFd($fd, $cb = null) |
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437 | } |
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438 |
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.