XOOPS /
XoopsCore
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 Assets 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 Assets, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 37 | class Assets |
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| 38 | { |
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| 39 | /** @var array */ |
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| 40 | protected $assetPrefs; |
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| 41 | |||
| 42 | /** @var boolean */ |
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| 43 | private $debug = false; |
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| 44 | |||
| 45 | /** @var array of default filter strings - may be overridden by prefs */ |
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| 46 | private $default_filters = array( |
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| 47 | 'css' => 'cssimport,cssembed,?cssmin', |
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| 48 | 'js' => '?jsqueeze', |
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| 49 | ); |
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| 50 | |||
| 51 | /** @var array of output locations in assets directory */ |
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| 52 | private $default_output = array( |
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| 53 | 'css' => 'css/*.css', |
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| 54 | 'js' => 'js/*.js', |
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| 55 | ); |
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| 56 | |||
| 57 | /** @var array of asset reference definitions - may be overridden by prefs */ |
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| 58 | private $default_asset_refs = array( |
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| 59 | array( |
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| 60 | 'name' => 'jquery', |
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| 61 | 'assets' => array('media/jquery/jquery.js'), |
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| 62 | 'filters' => null, |
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| 63 | ), |
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| 64 | array( |
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| 65 | 'name' => 'jqueryui', |
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| 66 | 'assets' => array('media/jquery/ui/jquery-ui.js'), |
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| 67 | 'filters' => null, |
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| 68 | ), |
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| 69 | array( |
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| 70 | 'name' => 'jgrowl', |
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| 71 | 'assets' => array('media/jquery/plugins/jquery.jgrowl.js'), |
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| 72 | 'filters' => null, |
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| 73 | ), |
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| 74 | array( |
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| 75 | 'name' => 'fontawesome', |
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| 76 | 'assets' => array('media/font-awesome/css/font-awesome.min.css'), |
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| 77 | 'filters' => null, |
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| 78 | ), |
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| 79 | ); |
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| 80 | |||
| 81 | /** |
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| 82 | * @var array of file assets to copy to assets |
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| 83 | */ |
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| 84 | private $default_file_assets = array( |
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| 85 | array( |
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| 86 | 'type' => 'fonts', |
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| 87 | 'path' => 'media/font-awesome/fonts', |
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| 88 | 'pattern' => '*', |
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| 89 | ), |
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| 90 | ); |
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| 91 | |||
| 92 | |||
| 93 | /** @var AssetManager */ |
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| 94 | private $assetManager = null; |
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| 95 | |||
| 96 | /** @var string config file with assets prefs */ |
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| 97 | private $assetsPrefsFilename = 'var/configs/system_assets_prefs.yml'; |
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| 98 | |||
| 99 | /** @var string config cache key */ |
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| 100 | private $assetsPrefsCacheKey = 'system/assets/prefs'; |
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| 101 | |||
| 102 | /** @var string string to identify Assetic filters using instanceof */ |
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| 103 | private $filterInterface = '\Assetic\Filter\FilterInterface'; |
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| 104 | |||
| 105 | /** |
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| 106 | * __construct |
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| 107 | */ |
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| 108 | 3 | public function __construct() |
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| 120 | |||
| 121 | /** |
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| 122 | * readAssetsPrefs - read configured asset preferences |
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| 123 | * |
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| 124 | * @return array of assets preferences |
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| 125 | */ |
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| 126 | 3 | protected function readAssetsPrefs() |
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| 173 | |||
| 174 | /** |
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| 175 | * saveAssetsPrefs - record array of assets preferences in config file, and |
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| 176 | * update cache |
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| 177 | * |
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| 178 | * @param array $assets_prefs array of asset preferences to save |
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| 179 | * |
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| 180 | * @return void |
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| 181 | */ |
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| 182 | 1 | View Code Duplication | protected function saveAssetsPrefs($assets_prefs) |
| 194 | |||
| 195 | |||
| 196 | /** |
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| 197 | * getUrlToAssets |
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| 198 | * |
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| 199 | * Create an asset file from a list of assets |
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| 200 | * |
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| 201 | * @param string $type type of asset, css or js |
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| 202 | * @param array $assets list of source files to process |
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| 203 | * @param string|array $filters either a comma separated list of known namsed filters |
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| 204 | * or an array of named filters and/or filter object |
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| 205 | * @param string $target target path, will default to assets directory |
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| 206 | * |
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| 207 | * @return string URL to asset file |
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| 208 | */ |
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| 209 | 1 | public function getUrlToAssets($type, $assets, $filters = 'default', $target = null) |
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| 210 | { |
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| 211 | 1 | if (is_scalar($assets)) { |
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| 212 | $assets = array($assets); // just a single path name |
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| 213 | } |
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| 214 | |||
| 215 | 1 | if ($filters==='default') { |
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| 216 | 1 | if (isset($this->default_filters[$type])) { |
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| 217 | 1 | $filters = $this->default_filters[$type]; |
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| 218 | } else { |
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| 219 | $filters = ''; |
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| 220 | } |
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| 221 | } |
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| 222 | |||
| 223 | 1 | View Code Duplication | if (!is_array($filters)) { |
| 224 | 1 | if (empty($filters)) { |
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| 225 | $filters = array(); |
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| 226 | } else { |
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| 227 | 1 | $filters = explode(',', str_replace(' ', '', $filters)); |
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| 228 | } |
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| 229 | } |
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| 230 | |||
| 231 | 1 | if (isset($this->default_output[$type])) { |
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| 232 | 1 | $output = $this->default_output[$type]; |
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| 233 | } else { |
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| 234 | $output = ''; |
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| 235 | } |
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| 236 | |||
| 237 | 1 | $xoops = \Xoops::getInstance(); |
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| 238 | |||
| 239 | 1 | if (isset($target)) { |
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| 240 | $target_path = $target; |
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| 241 | } else { |
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| 242 | 1 | $target_path = $xoops->path('assets'); |
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| 243 | } |
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| 244 | |||
| 245 | try { |
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| 246 | 1 | $am = $this->assetManager; |
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| 247 | 1 | $fm = new FilterManager(); |
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| 248 | |||
| 249 | 1 | foreach ($filters as $filter) { |
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| 250 | 1 | if (is_object($filter) && $filter instanceof $this->filterInterface) { |
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| 251 | $filterArray[] = $filter; |
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| 252 | } else { |
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| 253 | 1 | switch (ltrim($filter, '?')) { |
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| 254 | 1 | case 'cssembed': |
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| 255 | 1 | $fm->set('cssembed', new Filter\PhpCssEmbedFilter()); |
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| 256 | 1 | break; |
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| 257 | 1 | case 'cssmin': |
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| 258 | 1 | $fm->set('cssmin', new Filter\CssMinFilter()); |
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| 259 | 1 | break; |
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| 260 | 1 | case 'cssimport': |
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| 261 | 1 | $fm->set('cssimport', new Filter\CssImportFilter()); |
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| 262 | 1 | break; |
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| 263 | 1 | case 'cssrewrite': |
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| 264 | $fm->set('cssrewrite', new Filter\CssRewriteFilter()); |
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| 265 | break; |
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| 266 | 1 | case 'lessphp': |
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| 267 | $fm->set('lessphp', new Filter\LessphpFilter()); |
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| 268 | break; |
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| 269 | 1 | case 'scssphp': |
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| 270 | $fm->set('scssphp', new Filter\ScssphpFilter()); |
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| 271 | break; |
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| 272 | 1 | case 'jsmin': |
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| 273 | $fm->set('jsmin', new Filter\JSMinFilter()); |
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| 274 | break; |
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| 275 | 1 | case 'jsqueeze': |
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| 276 | 1 | $fm->set('jsqueeze', new Filter\JSqueezeFilter()); |
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| 277 | 1 | break; |
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| 278 | default: |
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| 279 | throw new \Exception(sprintf('%s filter not implemented.', $filter)); |
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| 280 | 1 | break; |
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| 281 | } |
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| 282 | } |
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| 283 | } |
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| 284 | |||
| 285 | // Factory setup |
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| 286 | 1 | $factory = new AssetFactory($target_path); |
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| 287 | 1 | $factory->setAssetManager($am); |
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| 288 | 1 | $factory->setFilterManager($fm); |
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| 289 | 1 | $factory->setDefaultOutput($output); |
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| 290 | 1 | $factory->setDebug($this->debug); |
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| 291 | 1 | $factory->addWorker(new CacheBustingWorker()); |
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| 292 | |||
| 293 | // Prepare the assets writer |
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| 294 | 1 | $writer = new AssetWriter($target_path); |
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| 295 | |||
| 296 | // Translate asset paths, remove duplicates |
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| 297 | 1 | $translated_assets = array(); |
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| 298 | 1 | foreach ($assets as $k => $v) { |
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| 299 | // translate path if not a reference or absolute path |
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| 300 | 1 | if (0 == preg_match("/^\\/|^\\\\|^[a-zA-Z]:|^@/", $v)) { |
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| 301 | 1 | $v = $xoops->path($v); |
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| 302 | } |
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| 303 | 1 | if (!in_array($v, $translated_assets)) { |
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| 304 | 1 | $translated_assets[] = $v; |
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| 305 | } |
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| 306 | } |
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| 307 | |||
| 308 | // Create the asset |
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| 309 | 1 | $asset = $factory->createAsset( |
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| 310 | 1 | $translated_assets, |
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| 311 | 1 | $filters |
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| 312 | ); |
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| 313 | 1 | $asset_path = $asset->getTargetPath(); |
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| 314 | 1 | if (!is_readable($target_path . $asset_path)) { |
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| 315 | $assetKey = 'Asset '.$asset_path; |
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| 316 | $xoops->events()->triggerEvent('debug.timer.start', $assetKey); |
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| 317 | $oldumask = umask(0002); |
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| 318 | $writer->writeAsset($asset); |
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| 319 | umask($oldumask); |
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| 320 | $xoops->events()->triggerEvent('debug.timer.stop', $assetKey); |
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| 321 | } |
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| 322 | |||
| 323 | 1 | return $xoops->url('assets/' . $asset_path); |
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| 324 | |||
| 325 | } catch (\Exception $e) { |
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| 326 | $xoops->events()->triggerEvent('core.exception', $e); |
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| 327 | return null; |
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| 328 | } |
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| 329 | } |
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| 330 | |||
| 331 | |||
| 332 | /** |
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| 333 | * setDebug enable debug mode, will skip filters prefixed with '?' |
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| 334 | * |
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| 335 | * @return true |
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| 336 | */ |
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| 337 | 1 | public function setDebug() |
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| 342 | |||
| 343 | /** |
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| 344 | * Add an asset reference to the asset manager |
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| 345 | * |
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| 346 | * @param string $name the name of the reference to be added |
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| 347 | * @param mixed $assets a string asset path, or an array of asset paths, |
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| 348 | * may include wildcard |
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| 349 | * @param string|array $filters either a comma separated list of known named filters |
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| 350 | * or an array of named filters and/or filter object |
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| 351 | * |
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| 352 | * @return boolean true if asset registers, false on error |
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| 353 | */ |
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| 354 | 3 | public function registerAssetReference($name, $assets, $filters = null) |
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| 355 | { |
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| 356 | 3 | $xoops = \Xoops::getInstance(); |
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| 357 | |||
| 358 | 3 | $assetArray = array(); |
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| 359 | 3 | $filterArray = array(); |
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| 360 | |||
| 361 | try { |
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| 362 | 3 | if (is_scalar($assets)) { |
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| 363 | 1 | $assets = array($assets); // just a single path name |
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| 364 | } |
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| 365 | 3 | foreach ($assets as $a) { |
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| 366 | // translate path if not a reference or absolute path |
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| 367 | 3 | if ((substr_compare($a, '@', 0, 1) != 0) |
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| 368 | 3 | && (substr_compare($a, '/', 0, 1) != 0)) { |
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| 369 | 3 | $a = $xoops->path($a); |
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| 370 | } |
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| 371 | 3 | if (false===strpos($a, '*')) { |
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| 372 | 3 | $assetArray[] = new FileAsset($a); // single file |
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| 373 | } else { |
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| 374 | 3 | $assetArray[] = new GlobAsset($a); // wild card match |
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| 375 | } |
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| 376 | } |
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| 377 | |||
| 378 | 3 | View Code Duplication | if (!is_array($filters)) { |
| 379 | 3 | if (empty($filters)) { |
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| 380 | 3 | $filters = array(); |
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| 381 | } else { |
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| 382 | $filters = explode(',', str_replace(' ', '', $filters)); |
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| 383 | } |
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| 384 | } |
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| 385 | 3 | foreach ($filters as $filter) { |
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| 386 | if (is_object($filter) && $filter instanceof $this->filterInterface) { |
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| 387 | $filterArray[] = $filter; |
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| 388 | } else { |
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| 389 | switch (ltrim($filter, '?')) { |
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| 390 | case 'cssembed': |
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| 391 | $filterArray[] = new Filter\PhpCssEmbedFilter(); |
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| 392 | break; |
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| 393 | case 'cssmin': |
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| 394 | $filterArray[] = new Filter\CssMinFilter(); |
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| 395 | break; |
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| 396 | case 'cssimport': |
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| 397 | $filterArray[] = new Filter\CssImportFilter(); |
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| 398 | break; |
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| 399 | case 'cssrewrite': |
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| 400 | $filterArray[] = new Filter\CssRewriteFilter(); |
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| 401 | break; |
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| 402 | case 'lessphp': |
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| 403 | $filterArray[] = new Filter\LessphpFilter(); |
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| 404 | break; |
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| 405 | case 'scssphp': |
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| 406 | $filterArray[] = new Filter\ScssphpFilter(); |
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| 407 | break; |
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| 408 | case 'jsmin': |
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| 409 | $filterArray[] = new Filter\JSMinFilter(); |
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| 410 | break; |
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| 411 | case 'jsqueeze': |
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| 412 | $filterArray[] = new Filter\JSqueezeFilter(); |
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| 413 | break; |
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| 414 | default: |
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| 415 | throw new \Exception(sprintf('%s filter not implemented.', $filter)); |
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| 416 | break; |
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| 417 | } |
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| 418 | } |
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| 419 | } |
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| 420 | |||
| 421 | 3 | $collection = new AssetCollection($assetArray, $filterArray); |
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| 422 | 3 | $this->assetManager->set($name, $collection); |
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| 423 | |||
| 424 | 3 | return true; |
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| 425 | } catch (\Exception $e) { |
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| 426 | $xoops->events()->triggerEvent('core.exception', $e); |
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| 427 | return false; |
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| 428 | } |
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| 429 | } |
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| 430 | |||
| 431 | 1 | public function copyBaseFileAssets() |
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| 437 | |||
| 438 | /** |
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| 439 | * copyFileAssets - copy files to the appropriate asset directory. |
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| 440 | * |
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| 441 | * Copying is normally only needed for fonts or images when they are referenced by a |
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| 442 | * relative url in stylesheet, or are located outside of the web root. |
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| 443 | * |
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| 444 | * @param string $fromPath path to files to copy |
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| 445 | * @param string $pattern glob pattern to match files to be copied |
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| 446 | * @param string $output output type (css, fonts, images, js) |
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| 447 | * |
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| 448 | * @return mixed boolean false if target directory is not writable, otherwise |
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| 449 | * integer count of files copied |
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| 450 | */ |
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| 451 | 2 | public function copyFileAssets($fromPath, $pattern, $output) |
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| 487 | } |
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| 488 |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: