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<?php |
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/* @description Transformation Style Sheets - Revolutionising PHP templating * |
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* @author Tom Butler [email protected] * |
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* @copyright 2015 Tom Butler <[email protected]> | https://r.je/ * |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License * |
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* @version 1.0 */ |
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namespace Transphporm\Pseudo; |
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class Attribute implements \Transphporm\Pseudo { |
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private $dataFunction; |
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public function __construct(\Transphporm\Hook\DataFunction $dataFunction) { |
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$this->dataFunction = $dataFunction; |
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} |
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public function match($pseudo, \DomElement $element) { |
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$pos = strpos($pseudo, '['); |
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if ($pos === false) return true; |
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$name = substr($pseudo, 0, $pos); |
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if (!is_callable([$this->dataFunction, $name])) return true; |
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$bracketMatcher = new \Transphporm\Parser\BracketMatcher($pseudo); |
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$criteria = $bracketMatcher->match('[', ']'); |
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if (strpos($pseudo, '=') === false) { |
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$lookupValue = $this->dataFunction->$name([$criteria], $element); |
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return $lookupValue !== null; |
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} |
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list ($field, $value) = explode('=', $criteria); |
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$operator = $this->getOperator($field); |
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$lookupValue = $this->dataFunction->$name([trim($field, $operator)], $element); |
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return $this->processOperator($operator, $lookupValue, $this->parseValue(trim($value, '"'))); |
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} |
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//Currently only not is supported, but this is separated out to support others in future |
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private function processOperator($operator, $lookupValue, $value) { |
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$matched = $lookupValue == $value; |
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return $operator === '!' ? !$matched : $matched; |
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} |
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private function parseValue($value) { |
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if ($value == 'true') return true; |
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else if ($value == 'false') return false; |
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else return $value; |
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} |
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private function getOperator($field) { |
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if ($field[strlen($field)-1] == '!') { |
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return '!'; |
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} |
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else return ''; |
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} |
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} |
Level-2 /
Transphporm
