Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like FilesManagement 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 FilesManagement, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 17 | trait FilesManagement |
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| 18 | { |
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| 19 | /** |
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| 20 | * Function responsible for checking if a directory exists, we can also write in and create an index.html file |
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| 21 | * |
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| 22 | * @param string $folder The full path of the directory to check |
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| 23 | * |
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| 24 | * @return void |
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| 25 | */ |
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| 26 | public static function createFolder($folder) |
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| 41 | |||
| 42 | /** |
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| 43 | * @param $file |
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| 44 | * @param $folder |
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| 45 | * @return bool |
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| 46 | */ |
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| 47 | public static function copyFile($file, $folder) |
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| 51 | |||
| 52 | /** |
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| 53 | * @param $src |
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| 54 | * @param $dst |
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| 55 | */ |
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| 56 | public static function recurseCopy($src, $dst) |
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| 71 | |||
| 72 | /** |
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| 73 | * |
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| 74 | * Remove files and (sub)directories |
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| 75 | * |
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| 76 | * @param string $src source directory to delete |
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| 77 | * |
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| 78 | * @uses \Xmf\Module\Helper::getHelper() |
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| 79 | * @uses \Xmf\Module\Helper::isUserAdmin() |
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| 80 | * |
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| 81 | * @return bool true on success |
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| 82 | */ |
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| 83 | public static function deleteDirectory($src) |
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| 120 | |||
| 121 | /** |
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| 122 | * |
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| 123 | * Recursively remove directory |
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| 124 | * |
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| 125 | * @todo currently won't remove directories with hidden files, should it? |
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| 126 | * |
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| 127 | * @param string $src directory to remove (delete) |
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| 128 | * |
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| 129 | * @return bool true on success |
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| 130 | */ |
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| 131 | public static function rrmdir($src) |
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| 162 | |||
| 163 | /** |
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| 164 | * Recursively move files from one directory to another |
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| 165 | * |
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| 166 | * @param string $src - Source of files being moved |
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| 167 | * @param string $dest - Destination of files being moved |
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| 168 | * |
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| 169 | * @return bool true on success |
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| 170 | */ |
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| 171 | View Code Duplication | public static function rmove($src, $dest) |
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| 202 | |||
| 203 | /** |
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| 204 | * Recursively copy directories and files from one directory to another |
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| 205 | * |
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| 206 | * @param string $src - Source of files being moved |
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| 207 | * @param string $dest - Destination of files being moved |
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| 208 | * |
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| 209 | * @uses \Xmf\Module\Helper::getHelper() |
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| 210 | * @uses \Xmf\Module\Helper::isUserAdmin() |
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| 211 | * |
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| 212 | * @return bool true on success |
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| 213 | */ |
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| 214 | View Code Duplication | public static function rcopy($src, $dest) |
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| 242 | } |
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| 243 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.