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<?php |
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declare(strict_types=1); |
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namespace Sirius\Filtration\Filter; |
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class Censor extends AbstractFilter |
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{ |
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// how may characters from the benining are left untouched |
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const OPTION_START_CHARACTERS = 'start_characters'; |
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// how may characters from the end are left untouched |
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const OPTION_END_CHARACTERS = 'end_characters'; |
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// replacement character |
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const OPTION_REPLACEMENT_CHAR = 'replacement_char'; |
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// censored words |
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const OPTION_WORDS = 'words'; |
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protected $options = [ |
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self::OPTION_START_CHARACTERS => 1, |
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self::OPTION_END_CHARACTERS => 1, |
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self::OPTION_REPLACEMENT_CHAR => '*', |
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self::OPTION_WORDS => [ |
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'fuck', |
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'fucker', |
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'fuckers', |
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'fucking', |
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'motherfucker', |
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'asshole', |
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'cunt', |
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'dick' |
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] |
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]; |
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protected $obfuscator; |
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public function setOption($name, $value) |
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{ |
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parent::setOption($name, $value); |
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// reset the obfuscator in case the options are changed during the usage |
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$this->obfuscator = null; |
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return $this; |
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} |
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protected function getReplaceCallback() |
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{ |
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if (! $this->obfuscator) { |
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$this->obfuscator = new Obfuscate($this->options); |
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} |
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$obfuscator = $this->obfuscator; |
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return function ($matches) use ($obfuscator) { |
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return $obfuscator->filter($matches[0]); |
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}; |
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} |
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public function filterSingle($value, string $valueIdentifier = null) |
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{ |
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// not a string, move along |
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if (! is_string($value)) { |
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return $value; |
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} |
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foreach ($this->options[self::OPTION_WORDS] as $word) { |
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$value = \preg_replace_callback("|\b{$word}\b|i", $this->getReplaceCallback(), $value); |
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} |
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return $value; |
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} |
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} |
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siriusphp /
filtration
