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<?php |
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|
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/** |
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* Regular expression helper |
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*/ |
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class Red_Regex { |
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private $pattern; |
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private $case; |
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|
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public function __construct( $pattern, $case_insensitive = false ) { |
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$this->pattern = $pattern; |
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$this->case = $case_insensitive; |
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} |
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|
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/** |
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* Does $target match the regex pattern, applying case insensitivity if set. |
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* |
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* Note: if the pattern is invalid it will not match |
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* |
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* @param string $target Text to match the regex against |
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* @return boolean match |
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*/ |
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public function is_match( $target ) { |
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return @preg_match( $this->get_regex(), $target, $matches ) > 0; |
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} |
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|
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/** |
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* Regex replace the current pattern with $replace_pattern, applied to $target |
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* |
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* Note: if the pattern is invalid it will return $target |
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* |
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* @param string $replace_pattern The regex replace pattern |
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* @param string $target Text to match the regex against |
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* @return string Replaced text |
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*/ |
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public function replace( $replace_pattern, $target ) { |
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$result = @preg_replace( $this->get_regex(), $replace_pattern, $target ); |
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return is_null( $result ) ? $target : $result; |
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} |
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|
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private function get_regex() { |
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$at_escaped = str_replace( '@', '\\@', $this->pattern ); |
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$case = ''; |
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|
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if ( $this->is_ignore_case() ) { |
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$case = 'i'; |
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} |
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|
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return '@' . $at_escaped . '@' . $case; |
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} |
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|
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public function is_ignore_case() { |
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return $this->case; |
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} |
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} |
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|
