Total Complexity | 41 |
Total Lines | 266 |
Duplicated Lines | 0 % |
Changes | 1 | ||
Bugs | 0 | Features | 0 |
Complex classes like Config 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 Config, and based on these observations, apply Extract Interface, too.
1 | <?php |
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14 | class Config |
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15 | { |
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16 | private const UNIX_DS = '/'; |
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17 | private const BASE_DIR_MARKER = '<<<base-dir>>>'; |
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18 | |||
19 | /** |
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20 | * @var string config name |
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21 | */ |
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22 | private string $name; |
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23 | |||
24 | /** |
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25 | * @var array sources - paths to config source files |
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26 | */ |
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27 | private array $sources = []; |
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28 | |||
29 | /** |
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30 | * @var array config value |
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31 | */ |
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32 | protected array $values = []; |
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33 | |||
34 | protected Builder $builder; |
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35 | |||
36 | protected ContentWriter $contentWriter; |
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37 | |||
38 | public function __construct(Builder $builder, string $name) |
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39 | { |
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40 | $this->builder = $builder; |
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41 | $this->name = $name; |
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42 | $this->contentWriter = new ContentWriter(); |
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43 | } |
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44 | |||
45 | public function clone(Builder $builder): self |
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52 | } |
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53 | |||
54 | public function getValues(): array |
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55 | { |
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56 | return $this->values; |
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57 | } |
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58 | |||
59 | public function load(array $paths = []): self |
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60 | { |
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61 | $this->sources = $this->loadFiles($paths); |
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62 | |||
63 | return $this; |
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64 | } |
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65 | |||
66 | protected function loadFiles(array $paths): array |
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67 | { |
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68 | switch (count($paths)) { |
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69 | case 0: |
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70 | return []; |
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71 | case 1: |
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72 | return [$this->loadFile(reset($paths))]; |
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73 | } |
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74 | |||
75 | $configs = []; |
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76 | foreach ($paths as $path) { |
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77 | $cs = $this->loadFiles($this->glob($path)); |
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78 | foreach ($cs as $config) { |
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79 | if (!empty($config)) { |
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80 | $configs[] = $config; |
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81 | } |
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82 | } |
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83 | } |
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84 | |||
85 | return $configs; |
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86 | } |
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87 | |||
88 | protected function glob(string $path): array |
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89 | { |
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90 | if (strpos($path, '*') === false) { |
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91 | return [$path]; |
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92 | } |
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93 | |||
94 | return glob($path); |
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95 | } |
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96 | |||
97 | /** |
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98 | * Reads config file. |
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99 | * |
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100 | * @param string $path |
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101 | * @return array configuration read from file |
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102 | */ |
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103 | protected function loadFile($path): array |
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108 | } |
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109 | |||
110 | /** |
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111 | * Merges given configs and writes at given name. |
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112 | * |
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113 | * @return Config |
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114 | */ |
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115 | public function build(): self |
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116 | { |
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117 | $this->values = $this->calcValues($this->sources); |
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118 | |||
119 | return $this; |
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120 | } |
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121 | |||
122 | public function write(): self |
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123 | { |
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124 | $this->writeFile($this->getOutputPath(), $this->values); |
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125 | |||
126 | return $this; |
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127 | } |
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128 | |||
129 | protected function calcValues(array $sources): array |
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130 | { |
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131 | $helper = new Helper(); |
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132 | $values = $helper->mergeConfig(...$sources); |
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133 | $values = $helper->fixConfig($values); |
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134 | |||
135 | return $this->substituteOutputDirs($values); |
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136 | } |
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137 | |||
138 | protected function writeFile(string $path, array $data): void |
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139 | { |
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140 | $depth = $this->findDepth(); |
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141 | $baseDir = $depth > 0 ? "dirname(__DIR__, $depth)" : '__DIR__'; |
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142 | |||
143 | $content = $this->replaceMarkers(implode("\n\n", array_filter([ |
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144 | 'header' => '<?php', |
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145 | 'baseDir' => "\$baseDir = $baseDir;", |
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146 | 'dotenv' => $this->hasEnv() |
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147 | ? "\$_ENV = array_merge((array) require __DIR__ . '/dotenv.php', (array) \$_ENV);" : '', |
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148 | 'defines' => $this->hasConstants() ? $this->builder->getConfig('defines')->buildRequires() : '', |
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149 | 'params' => $this->hasParams() ? "\$params = require __DIR__ . '/params.php';" : '', |
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150 | 'content' => $this->renderVars($data), |
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151 | ]))); |
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152 | $this->contentWriter->write($path, $content . "\n"); |
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153 | } |
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154 | |||
155 | public function hasEnv(): bool |
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156 | { |
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157 | return false; |
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158 | } |
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159 | |||
160 | public function hasConstants(): bool |
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161 | { |
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162 | return false; |
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163 | } |
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164 | |||
165 | public function hasParams(): bool |
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166 | { |
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167 | return false; |
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168 | } |
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169 | |||
170 | private function findDepth(): int |
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171 | { |
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172 | $outDir = dirname(self::normalizePath($this->getOutputPath())); |
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173 | $diff = substr($outDir, strlen($this->getBaseDir())); |
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174 | |||
175 | return substr_count($diff, self::UNIX_DS); |
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176 | } |
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177 | |||
178 | /** |
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179 | * @param array $vars array to be exported |
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180 | * @return string |
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181 | * @throws ReflectionException |
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182 | */ |
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183 | protected function renderVars(array $vars): string |
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184 | { |
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185 | $helper = new Helper(); |
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186 | |||
187 | return 'return ' . $helper->exportVar($vars) . ';'; |
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188 | } |
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189 | |||
190 | protected function replaceMarkers(string $content): string |
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191 | { |
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192 | return str_replace( |
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193 | ["'" . self::BASE_DIR_MARKER, "'?" . self::BASE_DIR_MARKER], |
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194 | ["\$baseDir . '", "'?' . \$baseDir . '"], |
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195 | $content |
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196 | ); |
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197 | } |
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198 | |||
199 | /** |
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200 | * Substitute output paths in given data array recursively with marker. |
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201 | * |
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202 | * @param array $data |
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203 | * @return array |
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204 | */ |
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205 | public function substituteOutputDirs(array $data): array |
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206 | { |
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207 | $dir = static::normalizePath($this->getBaseDir()); |
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208 | |||
209 | return static::substitutePaths($data, $dir, self::BASE_DIR_MARKER); |
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210 | } |
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211 | |||
212 | /** |
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213 | * Normalizes given path with given directory separator. |
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214 | * Default forced to Unix directory separator for substitutePaths to work properly in Windows. |
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215 | * |
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216 | * @param string $path path to be normalized |
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217 | * @param string $ds directory separator |
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218 | * @return string |
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219 | */ |
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220 | public static function normalizePath($path): string |
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221 | { |
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222 | return rtrim(strtr($path, '/\\', DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR), DIRECTORY_SEPARATOR); |
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223 | } |
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224 | |||
225 | /** |
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226 | * Substitute all paths in given array recursively with alias if applicable. |
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227 | * |
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228 | * @param array $data |
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229 | * @param string $dir |
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230 | * @param string $alias |
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231 | * @return array |
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232 | */ |
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233 | public static function substitutePaths($data, $dir, $alias): array |
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244 | } |
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245 | |||
246 | /** |
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247 | * Substitute path with alias if applicable. |
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248 | * |
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249 | * @param string $path |
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250 | * @param string $dir |
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251 | * @param string $alias |
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252 | * @return string |
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253 | */ |
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254 | protected static function substitutePath($path, $dir, $alias): string |
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270 | } |
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271 | |||
272 | public function getBaseDir(): string |
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273 | { |
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274 | return dirname(__DIR__, 5); |
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275 | } |
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276 | |||
277 | public function getOutputPath(string $name = null): string |
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280 | } |
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281 | } |
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282 |