Total Complexity | 41 |
Total Lines | 241 |
Duplicated Lines | 0 % |
Changes | 0 |
Complex classes like FilesystemStreamProxy 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 FilesystemStreamProxy, and based on these observations, apply Extract Interface, too.
1 | <?php |
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13 | class FilesystemStreamProxy implements StreamWrapperInterface |
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14 | { |
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15 | public static bool $registered = false; |
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16 | /** |
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17 | * @var resource|null |
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18 | */ |
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19 | public $context; |
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20 | public StreamWrapperInterface $decorated; |
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21 | public bool $ignored = false; |
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22 | |||
23 | public static ?FilesystemStreamCollector $collector = null; |
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24 | public static array $ignoredPathPatterns = []; |
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25 | public static array $ignoredClasses = []; |
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26 | public array $operations = []; |
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27 | |||
28 | public function __construct() |
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29 | { |
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30 | $this->decorated = new StreamWrapper(); |
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31 | $this->decorated->context = $this->context; |
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32 | } |
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33 | |||
34 | public function __call(string $name, array $arguments) |
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35 | { |
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36 | try { |
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37 | self::unregister(); |
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38 | return $this->decorated->{$name}(...$arguments); |
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39 | } finally { |
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40 | self::register(); |
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41 | } |
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42 | } |
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43 | |||
44 | public function __destruct() |
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45 | { |
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46 | foreach ($this->operations as $name => $operation) { |
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47 | self::$collector->collect( |
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48 | operation: $name, |
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49 | path: $operation['path'], |
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50 | args: $operation['args'], |
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51 | ); |
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52 | } |
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53 | } |
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54 | |||
55 | public function __get(string $name) |
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56 | { |
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57 | return $this->decorated->{$name}; |
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58 | } |
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59 | |||
60 | public static function register(): void |
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61 | { |
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62 | if (self::$registered) { |
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63 | return; |
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64 | } |
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65 | /** |
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66 | * It's important to trigger autoloader before unregistering the file stream handler |
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67 | */ |
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68 | class_exists(StreamWrapper::class); |
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69 | stream_wrapper_unregister('file'); |
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70 | stream_wrapper_register('file', self::class, STREAM_IS_URL); |
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71 | self::$registered = true; |
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72 | } |
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73 | |||
74 | public static function unregister(): void |
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75 | { |
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76 | if (!self::$registered) { |
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77 | return; |
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78 | } |
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79 | @stream_wrapper_restore('file'); |
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80 | self::$registered = false; |
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81 | } |
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82 | |||
83 | private function isIgnored(): bool |
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84 | { |
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85 | $backtrace = debug_backtrace(); |
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86 | return BacktraceIgnoreMatcher::isIgnoredByClass($backtrace, self::$ignoredClasses) |
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87 | || BacktraceIgnoreMatcher::isIgnoredByFile($backtrace, self::$ignoredPathPatterns); |
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88 | } |
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89 | |||
90 | public function stream_open(string $path, string $mode, int $options, ?string &$opened_path): bool |
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91 | { |
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92 | $this->ignored = $this->isIgnored(); |
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93 | return $this->__call(__FUNCTION__, func_get_args()); |
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94 | } |
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95 | |||
96 | public function stream_read(int $count): string|false |
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97 | { |
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98 | if (!$this->ignored) { |
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99 | $this->operations['read'] = [ |
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100 | 'path' => $this->decorated->filename, |
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101 | 'args' => [], |
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102 | ]; |
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103 | } |
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104 | return $this->__call(__FUNCTION__, func_get_args()); |
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105 | } |
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106 | |||
107 | public function stream_set_option(int $option, int $arg1, ?int $arg2): bool |
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108 | { |
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109 | return $this->__call(__FUNCTION__, func_get_args()); |
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110 | } |
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111 | |||
112 | public function stream_tell(): int |
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113 | { |
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114 | return $this->__call(__FUNCTION__, func_get_args()); |
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115 | } |
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116 | |||
117 | public function stream_eof(): bool |
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118 | { |
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119 | return $this->__call(__FUNCTION__, func_get_args()); |
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120 | } |
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121 | |||
122 | public function stream_seek(int $offset, int $whence = SEEK_SET): bool |
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123 | { |
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124 | return $this->__call(__FUNCTION__, func_get_args()); |
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125 | } |
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126 | |||
127 | public function stream_cast(int $castAs) |
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128 | { |
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129 | return $this->__call(__FUNCTION__, func_get_args()); |
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130 | } |
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131 | |||
132 | public function stream_stat(): array|false |
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133 | { |
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134 | return $this->__call(__FUNCTION__, func_get_args()); |
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135 | } |
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136 | |||
137 | public function dir_closedir(): bool |
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138 | { |
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139 | return $this->__call(__FUNCTION__, func_get_args()); |
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140 | } |
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141 | |||
142 | public function dir_opendir(string $path, int $options): bool |
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143 | { |
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144 | return $this->__call(__FUNCTION__, func_get_args()); |
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145 | } |
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146 | |||
147 | public function dir_readdir(): false|string |
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148 | { |
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149 | if (!$this->ignored) { |
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150 | $this->operations['readdir'] = [ |
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151 | 'path' => $this->decorated->filename, |
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152 | 'args' => [], |
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153 | ]; |
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154 | } |
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155 | return $this->__call(__FUNCTION__, func_get_args()); |
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156 | } |
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157 | |||
158 | public function dir_rewinddir(): bool |
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159 | { |
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160 | return $this->__call(__FUNCTION__, func_get_args()); |
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161 | } |
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162 | |||
163 | public function mkdir(string $path, int $mode, int $options): bool |
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164 | { |
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165 | if (!$this->isIgnored()) { |
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166 | $this->operations['mkdir'] = [ |
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167 | 'path' => $path, |
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168 | 'args' => [ |
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169 | 'mode' => $mode, |
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170 | 'options' => $options, |
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171 | ], |
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172 | ]; |
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173 | } |
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174 | return $this->__call(__FUNCTION__, func_get_args()); |
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175 | } |
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176 | |||
177 | public function rename(string $path_from, string $path_to): bool |
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178 | { |
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179 | if (!$this->isIgnored()) { |
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180 | $this->operations['rename'] = [ |
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181 | 'path' => $path_from, |
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182 | 'args' => [ |
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183 | 'path_to' => $path_to, |
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184 | ], |
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185 | ]; |
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186 | } |
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187 | return $this->__call(__FUNCTION__, func_get_args()); |
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188 | } |
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189 | |||
190 | public function rmdir(string $path, int $options): bool |
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191 | { |
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192 | if (!$this->isIgnored()) { |
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193 | $this->operations['rmdir'] = [ |
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194 | 'path' => $path, |
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195 | 'args' => [ |
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196 | 'options' => $options, |
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197 | ], |
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198 | ]; |
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199 | } |
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200 | return $this->__call(__FUNCTION__, func_get_args()); |
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201 | } |
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202 | |||
203 | public function stream_close(): void |
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204 | { |
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205 | $this->__call(__FUNCTION__, func_get_args()); |
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206 | } |
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207 | |||
208 | public function stream_flush(): bool |
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211 | } |
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212 | |||
213 | public function stream_lock(int $operation): bool |
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214 | { |
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216 | } |
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217 | |||
218 | public function stream_metadata(string $path, int $option, mixed $value): bool |
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219 | { |
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220 | return $this->__call(__FUNCTION__, func_get_args()); |
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221 | } |
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222 | |||
223 | public function stream_truncate(int $new_size): bool |
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224 | { |
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225 | return $this->__call(__FUNCTION__, func_get_args()); |
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226 | } |
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227 | |||
228 | public function stream_write(string $data): int |
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229 | { |
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230 | if (!$this->ignored) { |
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231 | $this->operations['write'] = [ |
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232 | 'path' => $this->decorated->filename, |
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233 | 'args' => [], |
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234 | ]; |
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235 | } |
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236 | |||
237 | return $this->__call(__FUNCTION__, func_get_args()); |
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238 | } |
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239 | |||
240 | public function unlink(string $path): bool |
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249 | } |
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250 | |||
251 | public function url_stat(string $path, int $flags): array|false |
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252 | { |
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253 | return $this->__call(__FUNCTION__, func_get_args()); |
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254 | } |
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255 | } |
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256 |