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 |
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25 | class PrinterCli implements Listener |
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26 | { |
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27 | /** |
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28 | * Verbose output |
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29 | * |
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30 | * @var bool |
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31 | */ |
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32 | protected $verbose = false; |
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33 | |||
34 | /** |
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35 | * Output with colors |
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36 | * |
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37 | * @var bool |
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38 | */ |
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39 | protected $colors = false; |
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40 | |||
41 | /** |
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42 | * Is debug active |
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43 | * |
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44 | * @var bool |
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45 | */ |
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46 | protected $debug = false; |
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47 | |||
48 | /** |
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49 | * Amount of executed backups |
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50 | * |
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51 | * @var integer |
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52 | */ |
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53 | private $numBackups = 0; |
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54 | |||
55 | /** |
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56 | * Amount of executed checks |
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57 | * |
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58 | * @var integer |
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59 | */ |
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60 | private $numChecks = 0; |
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61 | |||
62 | /** |
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63 | * Amount of executed crypts |
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64 | * |
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65 | * @var integer |
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66 | */ |
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67 | private $numCrypts = 0; |
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68 | |||
69 | /** |
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70 | * Amount of executed Syncs |
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71 | * |
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72 | * @var integer |
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73 | */ |
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74 | private $numSyncs = 0; |
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75 | |||
76 | /** |
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77 | * Amount of executed Cleanups |
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78 | * |
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79 | * @var integer |
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80 | */ |
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81 | private $numCleanups = 0; |
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82 | |||
83 | /** |
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84 | * Console |
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85 | * |
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86 | * @var \SebastianBergmann\Environment\Console |
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87 | */ |
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88 | private $console; |
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89 | |||
90 | /** |
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91 | * PHP Runtime |
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92 | * |
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93 | * @var \SebastianBergmann\Environment\Runtime |
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94 | */ |
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95 | private $runtime; |
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96 | |||
97 | /** |
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98 | * Returns an array of event names this subscriber wants to listen to. |
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99 | * |
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100 | * The array keys are event names and the value can be: |
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101 | * |
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102 | * * The method name to call (priority defaults to 0) |
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103 | * * An array composed of the method name to call and the priority |
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104 | * * An array of arrays composed of the method names to call and respective |
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105 | * priorities, or 0 if unset |
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106 | * |
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107 | * @return array The event names to listen to |
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108 | */ |
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109 | 3 | public static function getSubscribedEvents() |
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135 | |||
136 | /** |
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137 | * Constructor |
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138 | * |
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139 | * @param bool $verbose |
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140 | * @param bool $colors |
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141 | * @param bool $debug |
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142 | * @throws \InvalidArgumentException |
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143 | */ |
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144 | 29 | public function __construct(bool $verbose = false, bool $colors = false, bool $debug = false) |
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152 | |||
153 | /** |
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154 | * phpbu start event. |
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155 | * |
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156 | * @param \phpbu\App\Event\App\Start $event |
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157 | */ |
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158 | 2 | public function onPhpbuStart(Event\App\Start $event) |
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169 | |||
170 | /** |
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171 | * Backup start event. |
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172 | * |
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173 | * @param \phpbu\App\Event\Backup\Start $event |
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174 | */ |
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175 | 3 | public function onBackupStart(Event\Backup\Start $event) |
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183 | |||
184 | /** |
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185 | * Backup failed event. |
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186 | * |
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187 | * @param \phpbu\App\Event\Backup\Failed $event |
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188 | */ |
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189 | 1 | public function onBackupFailed(Event\Backup\Failed $event) |
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195 | |||
196 | /** |
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197 | * Backup end event. |
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198 | * |
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199 | * @param \phpbu\App\Event\Backup\End $event |
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200 | */ |
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201 | 2 | public function onBackupEnd(Event\Backup\End $event) |
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207 | |||
208 | /** |
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209 | * Check start event. |
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210 | * |
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211 | * @param \phpbu\App\Event\Check\Start $event |
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212 | */ |
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213 | 3 | public function onCheckStart(Event\Check\Start $event) |
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222 | |||
223 | /** |
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224 | * Check failed event. |
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225 | * |
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226 | * @param \phpbu\App\Event\Check\Failed $event |
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227 | */ |
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228 | 1 | public function onCheckFailed(Event\Check\Failed $event) |
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234 | |||
235 | /** |
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236 | * Check end event. |
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237 | * |
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238 | * @param \phpbu\App\Event\Check\End $event |
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239 | */ |
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240 | 2 | public function onCheckEnd(Event\Check\End $event) |
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246 | |||
247 | /** |
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248 | * Crypt start event. |
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249 | * |
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250 | * @param \phpbu\App\Event\Crypt\Start $event |
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251 | */ |
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252 | 4 | public function onCryptStart(Event\Crypt\Start $event) |
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260 | |||
261 | /** |
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262 | * Crypt skipped event. |
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263 | * |
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264 | * @param \phpbu\App\Event\Crypt\Skipped $event |
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265 | */ |
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266 | 1 | public function onCryptSkipped(Event\Crypt\Skipped $event) |
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272 | |||
273 | /** |
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274 | * Crypt failed event. |
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275 | * |
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276 | * @param \phpbu\App\Event\Crypt\Failed $event |
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277 | */ |
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278 | 1 | public function onCryptFailed(Event\Crypt\Failed $event) |
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284 | |||
285 | /** |
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286 | * Crypt end event. |
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287 | * |
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288 | * @param \phpbu\App\Event\Crypt\End $event |
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289 | */ |
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290 | 2 | public function onCryptEnd(Event\Crypt\End $event) |
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296 | |||
297 | /** |
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298 | * Sync start event. |
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299 | * |
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300 | * @param \phpbu\App\Event\Sync\Start $event |
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301 | */ |
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302 | 4 | public function onSyncStart(Event\Sync\Start $event) |
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310 | |||
311 | /** |
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312 | * Sync skipped event. |
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313 | * |
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314 | * @param \phpbu\App\Event\Sync\Skipped $event |
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315 | */ |
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316 | 1 | public function onSyncSkipped(Event\Sync\Skipped $event) |
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322 | |||
323 | /** |
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324 | * Sync failed event. |
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325 | * |
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326 | * @param \phpbu\App\Event\Sync\Failed $event |
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327 | */ |
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328 | 1 | public function onSyncFailed(Event\Sync\Failed $event) |
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334 | |||
335 | /** |
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336 | * Sync end event. |
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337 | * |
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338 | * @param \phpbu\App\Event\Sync\End $event |
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339 | */ |
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340 | 2 | public function onSyncEnd(Event\Sync\End $event) |
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346 | |||
347 | /** |
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348 | * Cleanup start event. |
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349 | * |
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350 | * @param \phpbu\App\Event\Cleanup\Start $event |
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351 | */ |
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352 | 4 | public function onCleanupStart(Event\Cleanup\Start $event) |
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360 | |||
361 | /** |
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362 | * Cleanup skipped event. |
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363 | * |
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364 | * @param \phpbu\App\Event\Cleanup\Skipped $event |
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365 | */ |
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366 | 1 | public function onCleanupSkipped(Event\Cleanup\Skipped $event) |
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372 | |||
373 | /** |
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374 | * Cleanup failed event. |
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375 | * |
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376 | * @param \phpbu\App\Event\Cleanup\Failed $event |
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377 | */ |
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378 | 1 | public function onCleanupFailed(Event\Cleanup\Failed $event) |
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384 | |||
385 | /** |
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386 | * Cleanup end event. |
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387 | * |
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388 | * @param \phpbu\App\Event\Cleanup\End $event |
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389 | */ |
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390 | 2 | public function onCleanupEnd(Event\Cleanup\End $event) |
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396 | |||
397 | /** |
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398 | * Debugging. |
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399 | * |
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400 | * @param \phpbu\App\Event\Debug $event |
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401 | */ |
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402 | 1 | public function onDebug(Event\Debug $event) |
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408 | |||
409 | /** |
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410 | * phpbu end event. |
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411 | * |
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412 | * @param \phpbu\App\Event\App\End $event |
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413 | */ |
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414 | 1 | public function onPhpbuEnd(Event\App\End $event) |
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419 | |||
420 | /** |
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421 | * Prints a result summary. |
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422 | * |
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423 | * @param \phpbu\App\Result $result |
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424 | */ |
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425 | 5 | public function printResult(Result $result) |
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437 | |||
438 | /** |
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439 | * Prints the result header with memory usage info. |
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440 | */ |
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441 | 5 | protected function printHeader() |
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445 | |||
446 | /** |
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447 | * Print error information. |
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448 | * |
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449 | * @param \phpbu\App\Result $result |
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450 | */ |
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451 | 5 | protected function printErrors(Result $result) |
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466 | |||
467 | /** |
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468 | * Prints verbose backup information. |
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469 | * |
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470 | * @param \phpbu\App\Result\Backup $backup |
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471 | */ |
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472 | 3 | protected function printBackupVerbose(Result\Backup $backup) |
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513 | |||
514 | /** |
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515 | * Prints 'OK' or 'FAILURE' footer. |
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516 | * |
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517 | * @param Result $result |
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518 | */ |
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519 | 5 | protected function printFooter(Result $result) |
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577 | |||
578 | /** |
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579 | * Writes a buffer out with a color sequence if colors are enabled. |
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580 | * |
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581 | * @author Sebastian Bergmann <[email protected]> |
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582 | * @param string $color |
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583 | * @param string $buffer |
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584 | */ |
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585 | 18 | protected function writeWithColor($color, $buffer) |
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592 | |||
593 | /** |
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594 | * Writes a buffer with Ansible like asterisk decoration. |
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595 | * |
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596 | * @param string $buffer |
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597 | */ |
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598 | 13 | protected function writeWithAsterisk($buffer) |
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602 | |||
603 | /** |
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604 | * Writes a buffer. |
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605 | * |
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606 | * @param string $buffer |
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607 | */ |
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608 | 20 | public function write($buffer) |
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615 | } |
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616 |