/magmi/plugins/base/itemprocessors/genericmapper/02_genericmapper.php

<?php
/**
 * Class SampleItemProcessor
 * @author dweeves
 *
 * This class is a sample for item processing
 */
class GenericMapperProcessor extends Magmi_ItemProcessor
{
	protected $_mapping;

	public function getPluginInfo()
	{
		return array(
            "name" => "Generic mapper",
            "author" => "Dweeves",
            "version" => "0.0.6a",
        	"url" => "http://sourceforge.net/apps/mediawiki/magmi/index.php?title=Generic_mapper"
            );
	}

	/**
	 * you can add/remove columns for the item passed since it is passed by reference
	 * @param Magmi_Engine $mmi : reference to magmi engine instance (convenient to perform database operations)
	 * @param unknown_type $item : modifiable reference to item before import
	 * the $item is a key/value array with column names as keys and values as read from csv file.
	 * @return bool :
	 * 		true if you want the item to be imported after your custom processing
	 * 		false if you want to skip item import after your processing
	 */


	public function processItemBeforeId(&$item,$params=null)
	{
		foreach(array_keys($item) as $k)
		{
			$mapped=false;
			if(isset($this->_mapping["$k.csv"]))
			{
				$mpd=$this->_mapping["$k.csv"]["DIRECT"];
				if(isset($mpd[$item[$k]]))
				{
					$item[$k]=$mpd[$item[$k]];
					$mapped=true;
				}
				else
				{
					$mpr=$this->_mapping["$k.csv"]["RE"];
					foreach($mpr as $re=>$value)
					{
						if(preg_match("|$re|msi",$item[$k]))
						{
							$item[$k]=preg_replace("|$re|",$value,$item[$k]);
							$mapped=true;
							break;
						}			
					}
					
				}
			}
			#if not found,try common mappings
			if(!$mapped)
			{
				$mpd=$this->_mapping["__common__.csv"]["DIRECT"];
				if(isset($mpd[$item[$k]]))
				{
					$item[$k]=$mpd[$item[$k]];
				}
			}	
		}
		return true;
	}



	public function initialize($params)
	{
		$this->_mapping=array();
		
		$dlist=glob(dirname(__file__)."/mappings/default/*.csv");
		if($dlist==false)
		{
			$dlist=array();
			$this->log("No default mapping found","warning");
		}
		$slist=glob(dirname(__file__)."/mappings/*.csv");
		if($slist==false)
		{
			$slist=array();
			$this->log("No custom mapping found","startup");
		}
		$flist=array_merge($dlist,$slist);
		foreach($flist as $fname)
		{
			$idx=basename($fname);
			if(!isset($this->_mapping[$idx]))
			{
				$this->_mapping[$idx]=array("DIRECT"=>array(),"RE"=>array());
			}
			$mf=fopen("$fname","r");
			while (($data = fgetcsv($mf, 1000, ",")) !== FALSE)
			{
				if(substr($data[0],0,4)=="_RE:")
				{
					$target="RE";
					$key=substr($data[0],4);
				}
				else
				{
					$target="DIRECT";
					$key=$data[0];
				}
				$this->_mapping[$idx][$target][$key]=$data[1];
			}
		}
	}
	
	static public function getCategory()
	{
		return "Input Data Preprocessing";
	}
}