Total Complexity | 56 |
Total Lines | 466 |
Duplicated Lines | 0 % |
Changes | 13 | ||
Bugs | 0 | Features | 0 |
Complex classes like Extension 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.
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 Extension, and based on these observations, apply Extract Interface, too.
1 | <?php |
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31 | class Extension extends SlugifyExtension |
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32 | { |
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33 | /** @var Builder */ |
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34 | protected $builder; |
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35 | /** @var Config */ |
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36 | protected $config; |
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37 | /** @var Slugify */ |
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38 | private static $slugifier; |
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39 | |||
40 | /** |
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41 | * @param Builder $builder |
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42 | */ |
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43 | public function __construct(Builder $builder) |
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44 | { |
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45 | if (!self::$slugifier instanceof Slugify) { |
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46 | self::$slugifier = Slugify::create(['regexp' => Page::SLUGIFY_PATTERN]); |
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47 | } |
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48 | |||
49 | parent::__construct(self::$slugifier); |
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50 | |||
51 | $this->builder = $builder; |
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52 | $this->config = $this->builder->getConfig(); |
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53 | } |
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54 | |||
55 | /** |
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56 | * {@inheritdoc} |
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57 | */ |
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58 | public function getName() |
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61 | } |
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62 | |||
63 | /** |
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64 | * {@inheritdoc} |
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65 | */ |
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66 | public function getFilters() |
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67 | { |
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68 | return [ |
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69 | new \Twig\TwigFilter('filter_by', [$this, 'filterBy']), |
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70 | // sort |
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71 | new \Twig\TwigFilter('sort_by_title', [$this, 'sortByTitle']), |
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72 | new \Twig\TwigFilter('sort_by_weight', [$this, 'sortByWeight']), |
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73 | new \Twig\TwigFilter('sort_by_date', [$this, 'sortByDate']), |
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74 | // assets |
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75 | new \Twig\TwigFilter('url', [$this, 'createUrl']), |
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76 | new \Twig\TwigFilter('minify', [$this, 'minify']), |
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77 | new \Twig\TwigFilter('to_css', [$this, 'toCss']), |
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78 | new \Twig\TwigFilter('html', [$this, 'createHtmlElement']), |
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79 | new \Twig\TwigFilter('inline', [$this, 'getContent']), |
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80 | new \Twig\TwigFilter('minify_css', [$this, 'minifyCss']), |
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81 | new \Twig\TwigFilter('minify_js', [$this, 'minifyJs']), |
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82 | new \Twig\TwigFilter('scss_to_css', [$this, 'scssToCss']), |
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83 | new \Twig\TwigFilter('sass_to_css', [$this, 'scssToCss']), |
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84 | new \Twig\TwigFilter('resize', [$this, 'resize']), |
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85 | // content |
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86 | new \Twig\TwigFilter('slugify', [$this, 'slugifyFilter']), |
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87 | new \Twig\TwigFilter('excerpt', [$this, 'excerpt']), |
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88 | new \Twig\TwigFilter('excerpt_html', [$this, 'excerptHtml']), |
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89 | // deprecated |
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90 | new \Twig\TwigFilter('filterBy', [$this, 'filterBy'], ['deprecated' => true, 'alternative' => 'filter_by']), |
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91 | new \Twig\TwigFilter('sortByTitle', [$this, 'sortByTitle'], ['deprecated' => true, 'alternative' => 'sort_by_title']), |
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92 | new \Twig\TwigFilter('sortByWeight', [$this, 'sortByWeight'], ['deprecated' => true, 'alternative' => 'sort_by_weight']), |
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93 | new \Twig\TwigFilter('sortByDate', [$this, 'sortByDate'], ['deprecated' => true, 'alternative' => 'sort_by_date']), |
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94 | new \Twig\TwigFilter('minifyCSS', [$this, 'minifyCss'], ['deprecated' => true, 'alternative' => 'minifyCss']), |
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95 | new \Twig\TwigFilter('minifyJS', [$this, 'minifyJs'], ['deprecated' => true, 'alternative' => 'minifyJs']), |
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96 | new \Twig\TwigFilter('SCSStoCSS', [$this, 'scssToCss'], ['deprecated' => true, 'alternative' => 'scss_to_css']), |
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97 | new \Twig\TwigFilter('excerptHtml', [$this, 'excerptHtml'], ['deprecated' => true, 'alternative' => 'excerpt_html']), |
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98 | new \Twig\TwigFilter('urlize', [$this, 'slugifyFilter'], ['deprecated' => true, 'alternative' => 'slugify']), |
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99 | ]; |
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100 | } |
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101 | |||
102 | /** |
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103 | * {@inheritdoc} |
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104 | */ |
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105 | public function getFunctions() |
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119 | ]; |
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120 | } |
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121 | |||
122 | /** |
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123 | * Filters by variable's name/value. |
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124 | * |
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125 | * @param PagesCollection $pages |
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126 | * @param string $variable |
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127 | * @param string $value |
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128 | * |
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129 | * @return CollectionInterface |
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130 | */ |
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131 | public function filterBy(PagesCollection $pages, string $variable, string $value): CollectionInterface |
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132 | { |
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133 | $filteredPages = $pages->filter(function (Page $page) use ($variable, $value) { |
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134 | $notVirtual = false; |
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135 | if (!$page->isVirtual()) { |
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136 | $notVirtual = true; |
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137 | } |
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138 | // is a dedicated getter exists? |
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139 | $method = 'get'.ucfirst($variable); |
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140 | if (method_exists($page, $method) && $page->$method() == $value) { |
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141 | return $notVirtual && true; |
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142 | } |
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143 | if ($page->getVariable($variable) == $value) { |
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144 | return $notVirtual && true; |
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145 | } |
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146 | }); |
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147 | |||
148 | return $filteredPages; |
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149 | } |
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150 | |||
151 | /** |
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152 | * Sorts by title. |
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153 | * |
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154 | * @param \Traversable $collection |
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155 | * |
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156 | * @return array |
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157 | */ |
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158 | public function sortByTitle(\Traversable $collection): array |
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159 | { |
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160 | $collection = iterator_to_array($collection); |
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161 | array_multisort(array_keys($collection), SORT_NATURAL | SORT_FLAG_CASE, $collection); |
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162 | |||
163 | return $collection; |
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164 | } |
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165 | |||
166 | /** |
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167 | * Sorts by weight. |
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168 | * |
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169 | * @param \Traversable $collection |
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170 | * |
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171 | * @return array |
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172 | */ |
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173 | public function sortByWeight(\Traversable $collection): array |
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174 | { |
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175 | $callback = function ($a, $b) { |
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176 | if (!isset($a['weight'])) { |
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177 | return 1; |
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178 | } |
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179 | if (!isset($b['weight'])) { |
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180 | return -1; |
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181 | } |
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182 | if ($a['weight'] == $b['weight']) { |
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183 | return 0; |
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184 | } |
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185 | |||
186 | return ($a['weight'] < $b['weight']) ? -1 : 1; |
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187 | }; |
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188 | |||
189 | $collection = iterator_to_array($collection); |
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190 | usort($collection, $callback); |
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191 | |||
192 | return $collection; |
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193 | } |
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194 | |||
195 | /** |
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196 | * Sorts by date. |
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197 | * |
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198 | * @param \Traversable $collection |
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199 | * |
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200 | * @return array |
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201 | */ |
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202 | public function sortByDate(\Traversable $collection): array |
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203 | { |
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204 | $callback = function ($a, $b) { |
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205 | if (!isset($a['date'])) { |
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206 | return -1; |
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207 | } |
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208 | if (!isset($b['date'])) { |
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209 | return 1; |
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210 | } |
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211 | if ($a['date'] == $b['date']) { |
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212 | return 0; |
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213 | } |
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214 | |||
215 | return ($a['date'] > $b['date']) ? -1 : 1; |
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216 | }; |
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217 | |||
218 | $collection = iterator_to_array($collection); |
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219 | usort($collection, $callback); |
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220 | |||
221 | return $collection; |
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222 | } |
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223 | |||
224 | /** |
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225 | * Creates an URL. |
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226 | * |
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227 | * $options[ |
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228 | * 'canonical' => true, |
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229 | * 'addhash' => false, |
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230 | * 'format' => 'json', |
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231 | * ]; |
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232 | * |
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233 | * @param Page|Asset|string|null $value |
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234 | * @param array|null $options |
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235 | * |
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236 | * @return mixed |
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237 | */ |
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238 | public function createUrl($value = null, $options = null) |
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239 | { |
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240 | return new Url($this->builder, $value, $options); |
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241 | } |
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242 | |||
243 | /** |
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244 | * Creates an asset (CSS, JS, images, etc.). |
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245 | * |
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246 | * @param string $path File path (relative from static/ dir). |
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247 | * @param array|null $options |
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248 | * |
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249 | * @return Asset |
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250 | */ |
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251 | public function createAsset(string $path, array $options = null): Asset |
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252 | { |
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253 | return new Asset($this->builder, $path, $options); |
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254 | } |
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255 | |||
256 | /** |
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257 | * Minifying an asset (CSS or JS). |
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258 | * ie: minify('css/style.css'). |
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259 | * |
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260 | * @param string|Asset $asset |
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261 | * |
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262 | * @return Asset |
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263 | */ |
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264 | public function minify($asset): Asset |
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265 | { |
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266 | if (!$asset instanceof Asset) { |
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267 | $asset = new Asset($this->builder, $asset); |
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268 | } |
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269 | |||
270 | return $asset->minify(); |
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271 | } |
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272 | |||
273 | /** |
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274 | * Compiles a SCSS asset. |
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275 | * |
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276 | * @param string|Asset $asset |
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277 | * |
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278 | * @return Asset |
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279 | */ |
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280 | public function toCss($asset): Asset |
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281 | { |
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282 | if (!$asset instanceof Asset) { |
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283 | $asset = new Asset($this->builder, $asset); |
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284 | } |
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285 | |||
286 | return $asset->compile(); |
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287 | } |
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288 | |||
289 | /** |
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290 | * Resizes an image. |
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291 | * |
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292 | * @param string $path Image path (relative from static/ dir or external). |
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293 | * @param int $size Image new size (width). |
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294 | * |
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295 | * @return string |
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296 | */ |
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297 | public function resize(string $path, int $size): string |
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298 | { |
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299 | return (new Image($this->builder))->resize($path, $size); |
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300 | } |
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301 | |||
302 | /** |
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303 | * Hashing an asset with sha384. |
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304 | * Useful for SRI (Subresource Integrity). |
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305 | * |
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306 | * @see https://developer.mozilla.org/fr/docs/Web/Security/Subresource_Integrity |
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307 | * |
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308 | * @param string|Asset $path |
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309 | * |
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310 | * @return string|null |
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311 | */ |
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312 | public function hashFile($asset): ?string |
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313 | { |
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314 | if (!$asset instanceof Asset) { |
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315 | $asset = new Asset($this->builder, $asset); |
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316 | } |
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317 | |||
318 | return sprintf('sha384-%s', base64_encode(hash('sha384', $asset['content'], true))); |
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319 | } |
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320 | |||
321 | /** |
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322 | * Minifying a CSS string. |
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323 | * |
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324 | * @param string $value |
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325 | * |
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326 | * @return string |
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327 | */ |
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328 | public function minifyCss(string $value): string |
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329 | { |
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330 | $cache = new Cache($this->builder, 'assets'); |
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331 | $cacheKey = $cache->createKeyFromValue($value); |
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332 | if (!$cache->has($cacheKey)) { |
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333 | $minifier = new Minify\CSS($value); |
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334 | $value = $minifier->minify(); |
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335 | $cache->set($cacheKey, $value); |
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336 | } |
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337 | |||
338 | return $cache->get($cacheKey, $value); |
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339 | } |
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340 | |||
341 | /** |
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342 | * Minifying a JavaScript string. |
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343 | * |
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344 | * @param string $value |
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345 | * |
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346 | * @return string |
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347 | */ |
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348 | public function minifyJs(string $value): string |
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349 | { |
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350 | $cache = new Cache($this->builder, 'assets'); |
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351 | $cacheKey = $cache->createKeyFromValue($value); |
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352 | if (!$cache->has($cacheKey)) { |
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353 | $minifier = new Minify\JS($value); |
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354 | $value = $minifier->minify(); |
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355 | $cache->set($cacheKey, $value); |
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356 | } |
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357 | |||
358 | return $cache->get($cacheKey, $value); |
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359 | } |
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360 | |||
361 | /** |
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362 | * Compiles a SCSS string. |
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363 | * |
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364 | * @param string $value |
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365 | * |
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366 | * @return string |
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367 | */ |
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368 | public function scssToCss(string $value): string |
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369 | { |
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370 | $cache = new Cache($this->builder, 'assets'); |
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371 | $cacheKey = $cache->createKeyFromValue($value); |
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372 | if (!$cache->has($cacheKey)) { |
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373 | $scss = new Compiler(); |
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374 | $value = $scss->compile($value); |
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375 | $cache->set($cacheKey, $value); |
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376 | } |
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377 | |||
378 | return $cache->get($cacheKey, $value); |
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379 | } |
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380 | |||
381 | /** |
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382 | * Creates an HTML element from an asset. |
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383 | * |
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384 | * @param Asset $asset |
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385 | * |
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386 | * @return string |
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387 | */ |
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388 | public function createHtmlElement(Asset $asset): string |
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411 | } |
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412 | |||
413 | /** |
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414 | * Returns the content of an Asset. |
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415 | * |
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416 | * @param Asset $asset |
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417 | * |
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418 | * @return string |
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419 | */ |
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420 | public function getContent(Asset $asset): string |
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427 | } |
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428 | |||
429 | /** |
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430 | * Reads $length first characters of a string and adds a suffix. |
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431 | * |
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432 | * @param string|null $string |
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433 | * @param int $length |
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434 | * @param string $suffix |
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435 | * |
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436 | * @return string|null |
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437 | */ |
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438 | public function excerpt(string $string = null, int $length = 450, string $suffix = ' …'): ?string |
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439 | { |
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440 | $string = str_replace('</p>', '<br /><br />', $string); |
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441 | $string = trim(strip_tags($string, '<br>'), '<br />'); |
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442 | if (mb_strlen($string) > $length) { |
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443 | $string = mb_substr($string, 0, $length); |
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444 | $string .= $suffix; |
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445 | } |
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446 | |||
447 | return $string; |
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448 | } |
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449 | |||
450 | /** |
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451 | * Reads characters before '<!-- excerpt|break -->'. |
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452 | * |
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453 | * @param string|null $string |
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454 | * |
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455 | * @return string|null |
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456 | */ |
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457 | public function excerptHtml(string $string = null): ?string |
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458 | { |
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459 | // https://regex101.com/r/Xl7d5I/3 |
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460 | $pattern = '(.*)(<!--[[:blank:]]?(excerpt|break)[[:blank:]]?-->)(.*)'; |
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461 | preg_match('/'.$pattern.'/is', $string, $matches); |
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462 | if (empty($matches)) { |
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463 | return $string; |
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464 | } |
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465 | |||
466 | return trim($matches[1]); |
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467 | } |
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468 | |||
469 | /** |
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470 | * Calculates estimated time to read a text. |
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471 | * |
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472 | * @param string|null $text |
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473 | * |
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474 | * @return string |
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475 | */ |
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476 | public function readtime(string $text = null): string |
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477 | { |
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478 | $words = str_word_count(strip_tags($text)); |
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479 | $min = floor($words / 200); |
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480 | if ($min === 0) { |
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481 | return '1'; |
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482 | } |
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483 | |||
484 | return (string) $min; |
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485 | } |
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486 | |||
487 | /** |
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488 | * Gets the value of an environment variable. |
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489 | * |
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490 | * @param string $var |
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491 | * |
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492 | * @return string|null |
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493 | */ |
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494 | public function getEnv(string $var): ?string |
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497 | } |
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498 | } |
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499 |