Complex classes like PrinterCli 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 PrinterCli, and based on these observations, apply Extract Interface, too.
1 | <?php |
||
27 | class PrinterCli implements Listener |
||
28 | { |
||
29 | /** |
||
30 | * Verbose output |
||
31 | * |
||
32 | * @var bool |
||
33 | */ |
||
34 | protected $verbose = false; |
||
35 | |||
36 | /** |
||
37 | * Output with colors |
||
38 | * |
||
39 | * @var bool |
||
40 | */ |
||
41 | protected $colors = false; |
||
42 | |||
43 | /** |
||
44 | * Is debug active |
||
45 | * |
||
46 | * @var bool |
||
47 | */ |
||
48 | protected $debug = false; |
||
49 | |||
50 | /** |
||
51 | * Amount of executed backups |
||
52 | * |
||
53 | * @var integer |
||
54 | */ |
||
55 | private $numBackups = 0; |
||
56 | |||
57 | /** |
||
58 | * Amount of executed checks |
||
59 | * |
||
60 | * @var integer |
||
61 | */ |
||
62 | private $numChecks = 0; |
||
63 | |||
64 | /** |
||
65 | * Amount of executed crypts |
||
66 | * |
||
67 | * @var integer |
||
68 | */ |
||
69 | private $numCrypts = 0; |
||
70 | |||
71 | /** |
||
72 | * Amount of executed Syncs |
||
73 | * |
||
74 | * @var integer |
||
75 | */ |
||
76 | private $numSyncs = 0; |
||
77 | |||
78 | /** |
||
79 | * Amount of executed Cleanups |
||
80 | * |
||
81 | * @var integer |
||
82 | */ |
||
83 | private $numCleanups = 0; |
||
84 | |||
85 | /** |
||
86 | * Console |
||
87 | * |
||
88 | * @var \SebastianBergmann\Environment\Console |
||
89 | */ |
||
90 | private $console; |
||
91 | |||
92 | /** |
||
93 | * PHP Runtime |
||
94 | * |
||
95 | * @var \SebastianBergmann\Environment\Runtime |
||
96 | */ |
||
97 | private $runtime; |
||
98 | |||
99 | /** |
||
100 | * Returns an array of event names this subscriber wants to listen to. |
||
101 | * |
||
102 | * The array keys are event names and the value can be: |
||
103 | * |
||
104 | * * The method name to call (priority defaults to 0) |
||
105 | * * An array composed of the method name to call and the priority |
||
106 | * * An array of arrays composed of the method names to call and respective |
||
107 | * priorities, or 0 if unset |
||
108 | * |
||
109 | * @return array The event names to listen to |
||
110 | */ |
||
111 | public static function getSubscribedEvents() |
||
137 | 2 | ||
138 | /** |
||
139 | * Constructor |
||
140 | * |
||
141 | * @param bool $verbose |
||
142 | * @param bool $colors |
||
143 | * @param bool $debug |
||
144 | * @throws \InvalidArgumentException |
||
145 | */ |
||
146 | public function __construct(bool $verbose = false, bool $colors = false, bool $debug = false) |
||
154 | |||
155 | /** |
||
156 | 29 | * phpbu start event. |
|
157 | 28 | * |
|
158 | 28 | * @param \phpbu\App\Event\App\Start $event |
|
159 | 28 | */ |
|
160 | 1 | public function onPhpbuStart(Event\App\Start $event) |
|
171 | |||
172 | /** |
||
173 | * Backup start event. |
||
174 | * |
||
175 | 1 | * @param \phpbu\App\Event\Backup\Start $event |
|
176 | */ |
||
177 | 1 | public function onBackupStart(Event\Backup\Start $event) |
|
185 | |||
186 | /** |
||
187 | * Backup failed event. |
||
188 | * |
||
189 | * @param \phpbu\App\Event\Backup\Failed $event |
||
190 | */ |
||
191 | 3 | public function onBackupFailed(Event\Backup\Failed $event) |
|
197 | 2 | ||
198 | 3 | /** |
|
199 | * Backup end event. |
||
200 | * |
||
201 | * @param \phpbu\App\Event\Backup\End $event |
||
202 | */ |
||
203 | public function onBackupEnd(Event\Backup\End $event) |
||
209 | 1 | ||
210 | /** |
||
211 | 1 | * Check start event. |
|
212 | 1 | * |
|
213 | 1 | * @param \phpbu\App\Event\Check\Start $event |
|
214 | */ |
||
215 | public function onCheckStart(Event\Check\Start $event) |
||
224 | 1 | ||
225 | 2 | /** |
|
226 | * Check failed event. |
||
227 | * |
||
228 | * @param \phpbu\App\Event\Check\Failed $event |
||
229 | */ |
||
230 | public function onCheckFailed(Event\Check\Failed $event) |
||
236 | 3 | ||
237 | 2 | /** |
|
238 | 2 | * Check end event. |
|
239 | 3 | * |
|
240 | * @param \phpbu\App\Event\Check\End $event |
||
241 | */ |
||
242 | public function onCheckEnd(Event\Check\End $event) |
||
248 | 1 | ||
249 | 1 | /** |
|
250 | 1 | * Crypt start event. |
|
251 | * |
||
252 | 1 | * @param \phpbu\App\Event\Crypt\Start $event |
|
253 | 1 | */ |
|
254 | 1 | public function onCryptStart(Event\Crypt\Start $event) |
|
262 | |||
263 | 2 | /** |
|
264 | 1 | * Crypt skipped event. |
|
265 | 1 | * |
|
266 | 2 | * @param \phpbu\App\Event\Crypt\Skipped $event |
|
267 | */ |
||
268 | public function onCryptSkipped(Event\Crypt\Skipped $event) |
||
274 | |||
275 | 4 | /** |
|
276 | 4 | * Crypt failed event. |
|
277 | 4 | * |
|
278 | 3 | * @param \phpbu\App\Event\Crypt\Failed $event |
|
279 | 3 | */ |
|
280 | 4 | public function onCryptFailed(Event\Crypt\Failed $event) |
|
286 | |||
287 | 1 | /** |
|
288 | * Crypt end event. |
||
289 | 1 | * |
|
290 | 1 | * @param \phpbu\App\Event\Crypt\End $event |
|
291 | 1 | */ |
|
292 | public function onCryptEnd(Event\Crypt\End $event) |
||
298 | |||
299 | /** |
||
300 | * Sync start event. |
||
301 | * |
||
302 | 1 | * @param \phpbu\App\Event\Sync\Start $event |
|
303 | */ |
||
304 | 1 | public function onSyncStart(Event\Sync\Start $event) |
|
312 | |||
313 | /** |
||
314 | * Sync skipped event. |
||
315 | * |
||
316 | * @param \phpbu\App\Event\Sync\Skipped $event |
||
317 | 2 | */ |
|
318 | public function onSyncSkipped(Event\Sync\Skipped $event) |
||
324 | |||
325 | /** |
||
326 | * Sync failed event. |
||
327 | * |
||
328 | * @param \phpbu\App\Event\Sync\Failed $event |
||
329 | 4 | */ |
|
330 | public function onSyncFailed(Event\Sync\Failed $event) |
||
336 | 4 | ||
337 | /** |
||
338 | * Sync end event. |
||
339 | * |
||
340 | * @param \phpbu\App\Event\Sync\End $event |
||
341 | */ |
||
342 | public function onSyncEnd(Event\Sync\End $event) |
||
348 | |||
349 | 1 | /** |
|
350 | 1 | * Cleanup start event. |
|
351 | 1 | * |
|
352 | * @param \phpbu\App\Event\Cleanup\Start $event |
||
353 | */ |
||
354 | public function onCleanupStart(Event\Cleanup\Start $event) |
||
362 | 1 | ||
363 | /** |
||
364 | 1 | * Cleanup skipped event. |
|
365 | 1 | * |
|
366 | 1 | * @param \phpbu\App\Event\Cleanup\Skipped $event |
|
367 | */ |
||
368 | public function onCleanupSkipped(Event\Cleanup\Skipped $event) |
||
374 | |||
375 | 2 | /** |
|
376 | 1 | * Cleanup failed event. |
|
377 | 1 | * |
|
378 | 2 | * @param \phpbu\App\Event\Cleanup\Failed $event |
|
379 | */ |
||
380 | public function onCleanupFailed(Event\Cleanup\Failed $event) |
||
386 | |||
387 | 4 | /** |
|
388 | 4 | * Cleanup end event. |
|
389 | 4 | * |
|
390 | 3 | * @param \phpbu\App\Event\Cleanup\End $event |
|
391 | 3 | */ |
|
392 | 4 | public function onCleanupEnd(Event\Cleanup\End $event) |
|
398 | |||
399 | 1 | /** |
|
400 | * Debugging. |
||
401 | 1 | * |
|
402 | 1 | * @param \phpbu\App\Event\Debug $event |
|
403 | 1 | */ |
|
404 | public function onDebug(Event\Debug $event) |
||
410 | |||
411 | /** |
||
412 | * phpbu end event. |
||
413 | * |
||
414 | 1 | * @param \phpbu\App\Event\App\End $event |
|
415 | */ |
||
416 | 1 | public function onPhpbuEnd(Event\App\End $event) |
|
421 | 1 | ||
422 | 1 | /** |
|
423 | * Prints a result summary. |
||
424 | * |
||
425 | * @param \phpbu\App\Result $result |
||
426 | */ |
||
427 | public function printResult(Result $result) |
||
439 | |||
440 | /** |
||
441 | 1 | * Prints the result header with memory usage info. |
|
442 | */ |
||
443 | 1 | protected function printHeader() |
|
447 | |||
448 | /** |
||
449 | * Print error information. |
||
450 | * |
||
451 | * @param \phpbu\App\Result $result |
||
452 | */ |
||
453 | 1 | protected function printErrors(Result $result) |
|
468 | |||
469 | 5 | /** |
|
470 | 3 | * Prints verbose backup information. |
|
471 | 3 | * |
|
472 | 3 | * @param \phpbu\App\Result\Backup $backup |
|
473 | 3 | */ |
|
474 | 5 | protected function printBackupVerbose(Result\Backup $backup) |
|
515 | 1 | ||
516 | 1 | /** |
|
517 | * Prints 'OK' or 'FAILURE' footer. |
||
518 | 1 | * |
|
519 | 3 | * @param Result $result |
|
520 | 1 | */ |
|
521 | 1 | protected function printFooter(Result $result) |
|
575 | 1 | ||
576 | 1 | /** |
|
577 | 1 | * Writes a buffer out with a color sequence if colors are enabled. |
|
578 | 1 | * |
|
579 | 1 | * @author Sebastian Bergmann <[email protected]> |
|
580 | 1 | * @param string $color |
|
581 | 1 | * @param string $buffer |
|
582 | 3 | */ |
|
583 | 1 | protected function writeWithColor($color, $buffer) |
|
590 | 1 | ||
591 | 1 | /** |
|
592 | 1 | * Writes a buffer with Ansible like asterisk decoration. |
|
593 | 1 | * |
|
594 | 1 | * @param string $buffer |
|
595 | 1 | */ |
|
596 | 1 | protected function writeWithAsterisk($buffer) |
|
600 | 1 | ||
601 | /** |
||
602 | 1 | * Writes a buffer. |
|
603 | 1 | * |
|
604 | 1 | * @param string $buffer |
|
605 | 1 | */ |
|
606 | 1 | public function write($buffer) |
|
613 | } |
||
614 |