1 | <?php |
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2 | |||
3 | /** |
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4 | * @package s9e\TextFormatter |
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5 | * @copyright Copyright (c) The s9e authors |
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6 | * @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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7 | */ |
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8 | namespace s9e\TextFormatter\Configurator\Items; |
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9 | |||
10 | use InvalidArgumentException; |
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11 | use s9e\TextFormatter\Configurator\ConfigProvider; |
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12 | use s9e\TextFormatter\Configurator\FilterableConfigValue; |
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13 | use s9e\TextFormatter\Configurator\Helpers\RegexpParser; |
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14 | use s9e\TextFormatter\Configurator\JavaScript\Code; |
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15 | use s9e\TextFormatter\Configurator\JavaScript\RegexpConvertor; |
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16 | |||
17 | class Regexp implements ConfigProvider, FilterableConfigValue |
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18 | { |
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19 | /** |
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20 | * @var bool Whether this regexp should have the global flag set in JavaScript |
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21 | */ |
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22 | protected $isGlobal; |
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23 | |||
24 | /** |
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25 | * @var string JavaScript regexp, with delimiters and modifiers, e.g. "/foo/i" |
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26 | */ |
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27 | protected $jsRegexp; |
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28 | |||
29 | /** |
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30 | * @var string PCRE regexp, with delimiters and modifiers, e.g. "/foo/i" |
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31 | */ |
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32 | protected $regexp; |
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33 | |||
34 | /** |
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35 | * Constructor |
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36 | * |
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37 | * @param string $regexp PCRE regexp, with delimiters and modifiers, e.g. "/foo/i" |
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38 | * @param bool $isGlobal Whether this regexp should have the global flag set in JavaScript |
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39 | */ |
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40 | 13 | public function __construct($regexp, $isGlobal = false) |
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41 | { |
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42 | 13 | if (@preg_match($regexp, '') === false) |
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43 | { |
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44 | 1 | throw new InvalidArgumentException('Invalid regular expression ' . var_export($regexp, true)); |
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45 | } |
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46 | |||
47 | 12 | $this->regexp = $regexp; |
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48 | 12 | $this->isGlobal = $isGlobal; |
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49 | } |
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50 | |||
51 | /** |
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52 | * Return this regexp as a string |
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53 | * |
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54 | * @return string |
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55 | */ |
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56 | 2 | public function __toString() |
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57 | { |
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58 | 2 | return $this->regexp; |
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59 | } |
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60 | |||
61 | /** |
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62 | * {@inheritdoc} |
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63 | */ |
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64 | 1 | public function asConfig() |
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65 | { |
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66 | 1 | return $this; |
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0 ignored issues
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67 | } |
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68 | |||
69 | /** |
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70 | * {@inheritdoc} |
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71 | */ |
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72 | 2 | public function filterConfig($target) |
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73 | { |
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74 | 2 | return ($target === 'JS') ? new Code($this->getJS()) : (string) $this; |
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75 | } |
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76 | |||
77 | /** |
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78 | * Return the name of each capture in this regexp |
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79 | * |
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80 | * @return string[] |
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81 | */ |
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82 | 1 | public function getCaptureNames() |
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83 | { |
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84 | 1 | return RegexpParser::getCaptureNames($this->regexp); |
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85 | } |
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86 | |||
87 | /** |
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88 | * Return this regexp's JavaScript representation |
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89 | * |
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90 | * @return string |
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91 | */ |
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92 | 4 | public function getJS() |
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93 | { |
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94 | 4 | if (!isset($this->jsRegexp)) |
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95 | { |
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96 | 3 | $this->jsRegexp = RegexpConvertor::toJS($this->regexp, $this->isGlobal); |
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97 | } |
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98 | |||
99 | 4 | return $this->jsRegexp; |
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100 | } |
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101 | |||
102 | /** |
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103 | * Return all the named captures with a standalone regexp that matches them |
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104 | * |
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105 | * @return array Array of [capture name => regexp] |
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106 | */ |
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107 | 3 | public function getNamedCaptures() |
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108 | { |
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109 | 3 | $captures = []; |
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110 | 3 | $regexpInfo = RegexpParser::parse($this->regexp); |
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111 | |||
112 | // Prepare the start/end of the regexp and ensure that we use the D modifier |
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113 | 3 | $start = $regexpInfo['delimiter'] . '^'; |
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114 | 3 | $end = '$' . $regexpInfo['delimiter'] . $regexpInfo['modifiers']; |
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115 | 3 | if (strpos($regexpInfo['modifiers'], 'D') === false) |
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116 | { |
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117 | 2 | $end .= 'D'; |
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118 | } |
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119 | |||
120 | 3 | foreach ($this->getNamedCapturesExpressions($regexpInfo['tokens']) as $name => $expr) |
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121 | { |
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122 | 3 | $captures[$name] = $start . $expr . $end; |
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123 | } |
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124 | |||
125 | 3 | return $captures; |
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126 | } |
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127 | |||
128 | /** |
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129 | * Return the expression used in each named capture |
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130 | * |
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131 | * @param array[] $tokens |
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132 | * @return array |
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133 | */ |
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134 | 3 | protected function getNamedCapturesExpressions(array $tokens) |
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135 | { |
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136 | 3 | $exprs = []; |
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137 | 3 | foreach ($tokens as $token) |
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138 | { |
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139 | 3 | if ($token['type'] !== 'capturingSubpatternStart' || !isset($token['name'])) |
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140 | { |
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141 | 3 | continue; |
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142 | } |
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143 | |||
144 | 3 | $expr = $token['content']; |
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145 | 3 | if (strpos($expr, '|') !== false) |
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146 | { |
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147 | 1 | $expr = '(?:' . $expr . ')'; |
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148 | } |
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149 | |||
150 | 3 | $exprs[$token['name']] = $expr; |
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151 | } |
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152 | |||
153 | 3 | return $exprs; |
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154 | } |
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155 | |||
156 | /** |
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157 | * Set this regexp's JavaScript representation |
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158 | * |
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159 | * @param string $jsRegexp |
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160 | * @return void |
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161 | */ |
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162 | 1 | public function setJS($jsRegexp) |
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163 | { |
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164 | 1 | $this->jsRegexp = $jsRegexp; |
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165 | } |
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166 | } |
In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: