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gyro/core/lib/helpers/converters/chain.converter.php

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<?php
/**
 * A Converter Chain
 * 
 * @author Gerd Riesselmann
 * @ingroup Lib
 */
class ConverterChain implements IConverter {
        protected $converters = array();
        protected $params = array();
        
        public function encode($value, $params = false) {
                reset($this->params);
                foreach($this->converters as $c) {
                        $p = current($this->params);
                        $value = $c->encode($value, $p);
                        next($this->params);
                }
                return $value;
        }
        
        public function decode($value, $params = false) {
                reset($this->params);
                foreach($this->converters as $c) {
                        $p = current($this->params);
                        $value = $c->decode($value, $p);
                        next($this->params);
                }
                return $value;
        }       
        
        /**
         * Append a converter to the chain
         * 
         * @param IConverter $converter The converter
         * @param mixed $params The converters params
         */
        public function append(IConverter $converter, $params = false) {
                $this->converters[] = $converter;
                $this->params[] = $params;
        }
} 

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