Complex classes like InputTransformer 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 InputTransformer, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 14 | class InputTransformer |
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| 15 | { |
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| 16 | const SEPARATOR = '#'; |
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| 17 | |||
| 18 | const KEY_PACKAGE_NAME = 'package-name'; |
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| 19 | const KEY_TYPE = 'type'; |
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| 20 | const KEY_LICENSE = 'license'; |
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| 21 | const KEY_PACKAGE_VERSION = 'package-version'; |
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| 22 | const KEY_DESCRIPTION = 'description'; |
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| 23 | const KEY_KEYWORD = 'keyword'; |
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| 24 | const KEY_AUTHOR = 'author'; |
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| 25 | const KEY_PROVIDED_PACKAGE = 'provided-package'; |
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| 26 | const KEY_SUGGESTED_PACKAGE = 'suggested-package'; |
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| 27 | const KEY_SUPPORT = 'support'; |
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| 28 | const KEY_AUTOLOAD_PSR0 = 'autoload-psr0'; |
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| 29 | const KEY_AUTOLOAD_PSR4 = 'autoload-psr4'; |
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| 30 | const KEY_AUTOLOAD_DEV_PSR0 = 'autoload-dev-psr0'; |
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| 31 | const KEY_AUTOLOAD_DEV_PSR4 = 'autoload-dev-psr4'; |
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| 32 | const KEY_REQUIRE = 'require'; |
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| 33 | const KEY_REQUIRE_DEV = 'require-dev'; |
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| 34 | const KEY_SCRIPT = 'script'; |
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| 35 | |||
| 36 | /** |
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| 37 | * @param $inputList |
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| 38 | * |
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| 39 | * @return ConfigurationFile|null |
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| 40 | */ |
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| 41 | 9 | public function fromCommandLine($inputList) |
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| 45 | |||
| 46 | /** |
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| 47 | * @param array $inputList |
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| 48 | * |
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| 49 | * @return ConfigurationFile|null |
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| 50 | */ |
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| 51 | 9 | protected function createConfiguration(array $inputList) |
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| 97 | |||
| 98 | /** |
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| 99 | * @param array $inputList |
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| 100 | * @param string $key |
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| 101 | * @param string $defaultValue |
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| 102 | * |
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| 103 | * @return string |
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| 104 | */ |
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| 105 | 9 | protected function getValue(array $inputList, $key, $defaultValue) |
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| 109 | |||
| 110 | /** |
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| 111 | * @param array $inputList |
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| 112 | * |
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| 113 | * @return array |
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| 114 | */ |
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| 115 | 9 | protected function extractKeywords(array $inputList) |
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| 126 | |||
| 127 | /** |
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| 128 | * @param array $inputList |
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| 129 | * |
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| 130 | * @return array |
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| 131 | */ |
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| 132 | 9 | protected function extractAuthors(array $inputList) |
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| 148 | |||
| 149 | /** |
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| 150 | * @param array $inputList |
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| 151 | * |
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| 152 | * @return array |
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| 153 | */ |
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| 154 | 9 | protected function extractProvidedPackages(array $inputList) |
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| 166 | |||
| 167 | /** |
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| 168 | * @param array $inputList |
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| 169 | * |
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| 170 | * @return array |
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| 171 | */ |
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| 172 | 9 | protected function extractSuggestedPackages(array $inputList) |
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| 189 | |||
| 190 | /** |
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| 191 | * @param array $inputList |
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| 192 | * |
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| 193 | * @return array |
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| 194 | */ |
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| 195 | 9 | protected function extractSupports(array $inputList) |
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| 207 | |||
| 208 | /** |
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| 209 | * @param array $inputList |
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| 210 | * |
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| 211 | * @return array |
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| 212 | */ |
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| 213 | 9 | protected function extractAutoloads(array $inputList) |
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| 228 | |||
| 229 | /** |
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| 230 | * @param array $inputList |
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| 231 | * |
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| 232 | * @return array |
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| 233 | */ |
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| 234 | 9 | protected function extractAutoloadsDev(array $inputList) |
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| 248 | |||
| 249 | /** |
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| 250 | * @param array $inputList |
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| 251 | * |
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| 252 | * @return array |
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| 253 | */ |
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| 254 | 9 | protected function extractRequiredPackages(array $inputList) |
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| 266 | /** |
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| 267 | * @param array $inputList |
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| 268 | * |
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| 269 | * @return array |
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| 270 | */ |
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| 271 | 9 | protected function extractRequiredDevPackages(array $inputList) |
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| 283 | |||
| 284 | /** |
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| 285 | * @param array $inputList |
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| 286 | * |
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| 287 | * @return array |
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| 288 | */ |
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| 289 | 9 | protected function extractScripts(array $inputList) |
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| 301 | |||
| 302 | /** |
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| 303 | * @param string $value |
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| 304 | * |
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| 305 | * @return array |
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| 306 | */ |
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| 307 | 9 | protected function extractDataFromValue($value) |
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| 311 | |||
| 312 | /** |
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| 313 | * @param array $inputList |
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| 314 | * @param string $optionKey |
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| 315 | * |
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| 316 | * @return array |
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| 317 | */ |
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| 318 | 9 | protected function extractAutoloadList(array $inputList, $optionKey) |
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| 330 | } |
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| 331 |