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 $inputList |
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| 38 | * |
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| 39 | * @return ConfigurationFile |
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| 40 | 9 | */ |
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| 41 | public function fromCommandLine($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 |
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| 50 | 9 | */ |
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| 51 | protected function createConfiguration(array $inputList) |
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| 95 | 1 | ||
| 96 | /** |
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| 97 | 9 | * @param array $inputList |
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| 98 | * @param string $key |
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| 99 | * @param string $defaultValue |
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| 100 | * |
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| 101 | * @return string |
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| 102 | */ |
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| 103 | protected function getValue(array $inputList, $key, $defaultValue) |
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| 107 | 9 | ||
| 108 | 9 | /** |
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| 109 | 1 | * @param array $inputList |
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| 110 | 1 | * |
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| 111 | 1 | * @return array |
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| 112 | 1 | */ |
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| 113 | 1 | protected function extractKeywords(array $inputList) |
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| 124 | |||
| 125 | /** |
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| 126 | * @param array $inputList |
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| 127 | 9 | * |
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| 128 | * @return array |
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| 129 | 9 | */ |
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| 130 | 9 | protected function extractAuthors(array $inputList) |
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| 146 | |||
| 147 | 9 | /** |
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| 148 | 9 | * @param array $inputList |
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| 149 | 9 | * |
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| 150 | 9 | * @return array |
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| 151 | 2 | */ |
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| 152 | 2 | protected function extractProvidedPackages(array $inputList) |
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| 164 | |||
| 165 | /** |
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| 166 | * @param array $inputList |
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| 167 | * |
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| 168 | 9 | * @return array |
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| 169 | */ |
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| 170 | 9 | protected function extractSuggestedPackages(array $inputList) |
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| 187 | |||
| 188 | 9 | /** |
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| 189 | * @param array $inputList |
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| 190 | 9 | * |
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| 191 | 2 | * @return array |
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| 192 | 9 | */ |
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| 193 | protected function extractSupports(array $inputList) |
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| 205 | |||
| 206 | /** |
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| 207 | 9 | * @param array $inputList |
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| 208 | * |
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| 209 | 9 | * @return array |
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| 210 | */ |
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| 211 | 9 | protected function extractAutoloads(array $inputList) |
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| 226 | |||
| 227 | 9 | /** |
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| 228 | * @param array $inputList |
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| 229 | 9 | * |
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| 230 | 9 | * @return array |
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| 231 | 2 | */ |
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| 232 | 2 | protected function extractAutoloadsDev(array $inputList) |
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| 246 | 9 | ||
| 247 | 9 | /** |
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| 248 | 2 | * @param array $inputList |
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| 249 | 2 | * |
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| 250 | 2 | * @return array |
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| 251 | 2 | */ |
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| 252 | 2 | protected function extractRequiredPackages(array $inputList) |
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| 264 | 9 | /** |
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| 265 | 9 | * @param array $inputList |
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| 266 | 2 | * |
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| 267 | 2 | * @return array |
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| 268 | 2 | */ |
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| 269 | 2 | protected function extractRequiredDevPackages(array $inputList) |
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| 281 | |||
| 282 | 9 | /** |
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| 283 | * @param array $inputList |
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| 284 | * |
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| 285 | * @return array |
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| 286 | */ |
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| 287 | protected function extractScripts(array $inputList) |
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| 299 | 3 | ||
| 300 | /** |
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| 301 | 9 | * @param string $value |
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| 302 | * |
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| 303 | * @return array |
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| 304 | */ |
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| 305 | protected function extractDataFromValue($value) |
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| 309 | |||
| 310 | /** |
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| 311 | * @param array $inputList |
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| 312 | * @param string $optionKey |
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| 313 | * |
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| 314 | * @return array |
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| 315 | */ |
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| 316 | protected function extractAutoloadList(array $inputList, $optionKey) |
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| 328 | } |
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| 329 |