Total Complexity | 41 |
Total Lines | 200 |
Duplicated Lines | 0 % |
Changes | 1 | ||
Bugs | 0 | Features | 0 |
Complex classes like QueryInputTrait 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 QueryInputTrait, and based on these observations, apply Extract Interface, too.
1 | <?php |
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17 | trait QueryInputTrait |
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18 | { |
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19 | /** |
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20 | * @param array $file |
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21 | * @param string $key |
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22 | * @param bool $decompress |
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23 | * |
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24 | * @return string |
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25 | */ |
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26 | private function readFileContent(array $file, string $key, bool $decompress): string |
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27 | { |
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28 | $name = $file['name'][$key]; |
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29 | $tmpName = $file['tmp_name'][$key]; |
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30 | $content = file_get_contents($decompress && preg_match('~\.gz$~', $name) ? |
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31 | "compress.zlib://$tmpName" : $tmpName); //! may not be reachable because of open_basedir |
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32 | if (!$decompress) { |
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33 | return $content; |
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34 | } |
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35 | $start = substr($content, 0, 3); |
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36 | if (function_exists('iconv') && preg_match("~^\xFE\xFF|^\xFF\xFE~", $start, $regs)) { |
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37 | // not ternary operator to save memory |
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38 | return iconv('utf-16', 'utf-8', $content) . "\n\n"; |
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39 | } |
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40 | if ($start == "\xEF\xBB\xBF") { // UTF-8 BOM |
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41 | return substr($content, 3) . "\n\n"; |
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42 | } |
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43 | return $content; |
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44 | } |
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45 | |||
46 | /** |
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47 | * Get file contents from $_FILES |
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48 | * |
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49 | * @param string $key |
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50 | * @param bool $decompress |
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51 | * |
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52 | * @return string|null |
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53 | */ |
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54 | private function getFileContents(string $key, bool $decompress = false) |
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55 | { |
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56 | $file = $_FILES[$key]; |
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57 | if (!$file) { |
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58 | return null; |
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59 | } |
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60 | foreach ($file as $key => $val) { |
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61 | $file[$key] = (array) $val; |
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62 | } |
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63 | $queries = ''; |
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64 | foreach ($file['error'] as $key => $error) { |
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65 | if (($error)) { |
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66 | return $error; |
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67 | } |
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68 | $queries .= $this->readFileContent($file, $key, $decompress); |
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69 | } |
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70 | //! Support SQL files not ending with semicolon |
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71 | return $queries; |
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72 | } |
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73 | |||
74 | /** |
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75 | * @param TableFieldEntity $field |
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76 | * @param string $value |
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77 | * @param string $function |
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78 | * |
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79 | * @return string |
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80 | */ |
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81 | private function getInputFieldExpression(TableFieldEntity $field, string $value, string $function): string |
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82 | { |
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83 | $expression = $this->driver->quote($value); |
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84 | if (preg_match('~^(now|getdate|uuid)$~', $function)) { |
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85 | return "$function()"; |
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86 | } |
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87 | if (preg_match('~^current_(date|timestamp)$~', $function)) { |
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88 | return $function; |
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89 | } |
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90 | if (preg_match('~^([+-]|\|\|)$~', $function)) { |
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91 | return $this->driver->escapeId($field->name) . " $function $expression"; |
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92 | } |
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93 | if (preg_match('~^[+-] interval$~', $function)) { |
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94 | return $this->driver->escapeId($field->name) . " $function " . |
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95 | (preg_match("~^(\\d+|'[0-9.: -]') [A-Z_]+\$~i", $value) ? $value : $expression); |
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96 | } |
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97 | if (preg_match('~^(addtime|subtime|concat)$~', $function)) { |
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98 | return "$function(" . $this->driver->escapeId($field->name) . ", $expression)"; |
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99 | } |
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100 | if (preg_match('~^(md5|sha1|password|encrypt)$~', $function)) { |
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101 | return "$function($expression)"; |
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102 | } |
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103 | return $expression; |
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104 | } |
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105 | |||
106 | /** |
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107 | * @param TableFieldEntity $field Single field from fields() |
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108 | * @param string $value |
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109 | * @param string $function |
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110 | * |
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111 | * @return string |
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112 | */ |
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113 | protected function getUnconvertedFieldValue(TableFieldEntity $field, string $value, string $function = ''): string |
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114 | { |
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115 | if ($function === 'SQL') { |
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116 | return $value; // SQL injection |
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117 | } |
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118 | $expression = $this->getInputFieldExpression($field, $value, $function); |
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119 | return $this->driver->unconvertField($field, $expression); |
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120 | } |
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121 | |||
122 | /** |
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123 | * @param mixed $value |
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124 | * |
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125 | * @return false|int|string |
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126 | */ |
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127 | private function getEnumFieldValue($value) |
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128 | { |
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129 | if ($value === -1) { |
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130 | return false; |
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131 | } |
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132 | if ($value === '') { |
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133 | return 'NULL'; |
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134 | } |
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135 | return +$value; |
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136 | } |
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137 | |||
138 | /** |
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139 | * @param TableFieldEntity $field |
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140 | * |
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141 | * @return string|false |
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142 | */ |
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143 | private function getOrigFieldValue(TableFieldEntity $field) |
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144 | { |
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145 | if (preg_match('~^CURRENT_TIMESTAMP~i', $field->onUpdate) === false) { |
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146 | return false; |
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147 | } |
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148 | return $this->driver->escapeId($field->name); |
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149 | } |
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150 | |||
151 | /** |
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152 | * @param mixed $value |
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153 | * |
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154 | * @return array|false |
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155 | */ |
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156 | private function getJsonFieldValue($value): string |
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157 | { |
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158 | if (!is_array($value = json_decode($value, true))) { |
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159 | return false; //! Report errors |
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160 | } |
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161 | return $value; |
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162 | } |
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163 | |||
164 | /** |
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165 | * @param TableFieldEntity $field |
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166 | * |
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167 | * @return string|false |
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168 | */ |
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169 | private function getBinaryFieldValue(TableFieldEntity $field) |
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170 | { |
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171 | if (!$this->iniBool('file_uploads')) { |
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172 | return false; |
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173 | } |
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174 | $idf = $this->bracketEscape($field->name); |
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175 | $file = $this->getFileContents("fields-$idf"); |
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176 | if (!is_string($file)) { |
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177 | return false; //! report errors |
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178 | } |
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179 | return $this->driver->quoteBinary($file); |
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180 | } |
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181 | |||
182 | /** |
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183 | * Process edit input field |
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184 | * |
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185 | * @param TableFieldEntity $field |
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186 | * @param array $inputs The user inputs |
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187 | * |
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188 | * @return array|false|float|int|string|null |
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189 | */ |
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190 | public function processInput(TableFieldEntity $field, array $inputs) |
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217 | } |
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218 | } |
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219 |