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1 | <?php |
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2 | namespace Robo\Task\Assets; |
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3 | |||
4 | use Robo\Result; |
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5 | use Robo\Task\BaseTask; |
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6 | |||
7 | /** |
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8 | * Minifies asset file (CSS or JS). |
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9 | * |
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10 | * ``` php |
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11 | * <?php |
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12 | * $this->taskMinify( 'web/assets/theme.css' ) |
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13 | * ->run() |
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14 | * ?> |
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15 | * ``` |
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16 | * Please install additional dependencies to use: |
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17 | * |
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18 | * ``` |
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19 | * "patchwork/jsqueeze": "~1.0", |
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20 | * "natxet/CssMin": "~3.0" |
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21 | * ``` |
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22 | */ |
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23 | class Minify extends BaseTask |
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24 | { |
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25 | /** |
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26 | * @var array |
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27 | */ |
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28 | protected $types = ['css', 'js']; |
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29 | |||
30 | /** |
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31 | * @var string |
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32 | */ |
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33 | protected $text; |
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34 | |||
35 | /** |
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36 | * @var string |
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37 | */ |
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38 | protected $dst; |
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39 | |||
40 | /** |
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41 | * @var string |
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42 | */ |
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43 | protected $type; |
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44 | |||
45 | /** |
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46 | * @var array |
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47 | */ |
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48 | protected $squeezeOptions = [ |
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49 | 'singleLine' => true, |
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50 | 'keepImportantComments' => true, |
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51 | 'specialVarRx' => false, |
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52 | ]; |
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53 | |||
54 | /** |
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55 | * Constructor. Accepts asset file path or string source. |
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56 | * |
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57 | * @param string $input |
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58 | */ |
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59 | public function __construct($input) |
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60 | { |
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61 | if (file_exists($input)) { |
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62 | $this->fromFile($input); |
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63 | return; |
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64 | } |
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65 | |||
66 | $this->fromText($input); |
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67 | } |
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68 | |||
69 | /** |
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70 | * Sets destination. Tries to guess type from it. |
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71 | * |
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72 | * @param string $dst |
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73 | * |
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74 | * @return $this |
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75 | */ |
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76 | public function to($dst) |
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77 | { |
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78 | $this->dst = $dst; |
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79 | |||
80 | if (!empty($this->dst) && empty($this->type)) { |
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81 | $this->type($this->getExtension($this->dst)); |
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82 | } |
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83 | |||
84 | return $this; |
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85 | } |
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86 | |||
87 | /** |
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88 | * Sets type with validation. |
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89 | * |
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90 | * @param string $type css|js |
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91 | * |
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92 | * @return $this |
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93 | */ |
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94 | public function type($type) |
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95 | { |
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96 | $type = strtolower($type); |
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97 | |||
98 | if (in_array($type, $this->types)) { |
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99 | $this->type = $type; |
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100 | } |
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101 | |||
102 | return $this; |
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103 | } |
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104 | |||
105 | /** |
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106 | * Sets text from string source. |
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107 | * |
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108 | * @param string $text |
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109 | * |
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110 | * @return $this |
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111 | */ |
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112 | protected function fromText($text) |
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113 | { |
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114 | $this->text = (string)$text; |
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115 | unset($this->type); |
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116 | |||
117 | return $this; |
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118 | } |
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119 | |||
120 | /** |
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121 | * Sets text from asset file path. Tries to guess type and set default destination. |
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122 | * |
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123 | * @param string $path |
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124 | * |
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125 | * @return $this |
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126 | */ |
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127 | protected function fromFile($path) |
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128 | { |
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129 | $this->text = file_get_contents($path); |
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130 | |||
131 | unset($this->type); |
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132 | $this->type($this->getExtension($path)); |
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133 | |||
134 | if (empty($this->dst) && !empty($this->type)) { |
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135 | $ext_length = strlen($this->type) + 1; |
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136 | $this->dst = substr($path, 0, -$ext_length) . '.min.' . $this->type; |
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137 | } |
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138 | |||
139 | return $this; |
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140 | } |
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141 | |||
142 | /** |
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143 | * Gets file extension from path. |
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144 | * |
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145 | * @param string $path |
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146 | * |
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147 | * @return string |
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148 | */ |
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149 | protected function getExtension($path) |
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150 | { |
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151 | return pathinfo($path, PATHINFO_EXTENSION); |
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152 | } |
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153 | |||
154 | /** |
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155 | * Minifies and returns text. |
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156 | * |
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157 | * @return string|bool |
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158 | */ |
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159 | protected function getMinifiedText() |
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160 | { |
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161 | switch ($this->type) { |
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162 | case 'css': |
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163 | if (!class_exists('\CssMin')) { |
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164 | return Result::errorMissingPackage($this, 'CssMin', 'natxet/CssMin'); |
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165 | } |
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166 | |||
167 | return \CssMin::minify($this->text); |
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168 | break; |
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169 | |||
170 | case 'js': |
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171 | if (!class_exists('\JSqueeze') && !class_exists('\Patchwork\JSqueeze')) { |
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172 | return Result::errorMissingPackage($this, 'Patchwork\JSqueeze', 'patchwork/jsqueeze'); |
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173 | } |
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174 | |||
175 | if (class_exists('\JSqueeze')) { |
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176 | $jsqueeze = new \JSqueeze(); |
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177 | } else { |
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178 | $jsqueeze = new \Patchwork\JSqueeze(); |
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179 | } |
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180 | |||
181 | return $jsqueeze->squeeze( |
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182 | $this->text, |
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183 | $this->squeezeOptions['singleLine'], |
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184 | $this->squeezeOptions['keepImportantComments'], |
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185 | $this->squeezeOptions['specialVarRx'] |
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186 | ); |
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187 | break; |
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188 | } |
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189 | |||
190 | return false; |
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191 | } |
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192 | |||
193 | /** |
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194 | * Single line option for the JS minimisation. |
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195 | * |
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196 | * @param bool $singleLine |
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197 | * |
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198 | * @return $this |
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199 | */ |
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200 | public function singleLine($singleLine) |
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201 | { |
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202 | $this->squeezeOptions['singleLine'] = (bool)$singleLine; |
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203 | return $this; |
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204 | } |
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205 | |||
206 | /** |
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207 | * keepImportantComments option for the JS minimisation. |
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208 | * |
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209 | * @param bool $keepImportantComments |
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210 | * |
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211 | * @return $this |
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212 | */ |
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213 | public function keepImportantComments($keepImportantComments) |
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214 | { |
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215 | $this->squeezeOptions['keepImportantComments'] = (bool)$keepImportantComments; |
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216 | return $this; |
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217 | } |
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218 | |||
219 | /** |
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220 | * specialVarRx option for the JS minimisation. |
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221 | * |
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222 | * @param bool $specialVarRx |
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223 | * |
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224 | * @return $this ; |
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225 | */ |
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226 | public function specialVarRx($specialVarRx) |
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227 | { |
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228 | $this->squeezeOptions['specialVarRx'] = (bool)$specialVarRx; |
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229 | return $this; |
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230 | } |
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231 | |||
232 | /** |
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233 | * @return string |
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234 | */ |
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235 | public function __toString() |
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236 | { |
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237 | return (string) $this->getMinifiedText(); |
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238 | } |
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239 | |||
240 | /** |
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241 | * {@inheritdoc} |
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242 | */ |
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243 | public function run() |
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244 | { |
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245 | if (empty($this->type)) { |
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246 | return Result::error($this, 'Unknown asset type.'); |
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247 | } |
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248 | |||
249 | if (empty($this->dst)) { |
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250 | return Result::error($this, 'Unknown file destination.'); |
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251 | } |
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252 | |||
253 | View Code Duplication | if (file_exists($this->dst) && !is_writable($this->dst)) { |
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254 | return Result::error($this, 'Destination already exists and cannot be overwritten.'); |
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255 | } |
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256 | |||
257 | $size_before = strlen($this->text); |
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258 | $minified = $this->getMinifiedText(); |
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259 | |||
260 | if ($minified instanceof Result) { |
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261 | return $minified; |
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262 | } elseif (false === $minified) { |
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263 | return Result::error($this, 'Minification failed.'); |
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264 | } |
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265 | |||
266 | $size_after = strlen($minified); |
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267 | |||
268 | // Minification did not reduce file size, so use original file. |
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269 | if ($size_after > $size_before) { |
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270 | $minified = $this->text; |
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271 | $size_after = $size_before; |
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272 | } |
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273 | |||
274 | $dst = $this->dst . '.part'; |
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275 | $write_result = file_put_contents($dst, $minified); |
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276 | |||
277 | if (false === $write_result) { |
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278 | @unlink($dst); |
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279 | return Result::error($this, 'File write failed.'); |
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280 | } |
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281 | // Cannot be cross-volume; should always succeed. |
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282 | @rename($dst, $this->dst); |
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283 | if ($size_before === 0) { |
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284 | $minified_percent = 0; |
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285 | } else { |
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286 | $minified_percent = number_format(100 - ($size_after / $size_before * 100), 1); |
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287 | } |
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288 | $this->printTaskSuccess('Wrote {filepath}', ['filepath' => $this->dst]); |
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289 | $context = [ |
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290 | 'bytes' => $this->formatBytes($size_after), |
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291 | 'reduction' => $this->formatBytes(($size_before - $size_after)), |
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292 | 'percentage' => $minified_percent, |
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293 | ]; |
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294 | $this->printTaskSuccess('Wrote {bytes} (reduced by {reduction} / {percentage})', $context); |
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295 | return Result::success($this, 'Asset minified.'); |
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296 | } |
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297 | } |
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298 |
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.