<?php
/* $Id$ */
namespace Mammut\Document\Diff;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');
/**
 * 
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\Documents
 */
class DiffReplaceOp extends \Mammut\Object implements iDiffOp {
	public function __construct($fromLen, $text) {
		$this->fromLen = $fromLen;
		$this->text = $text;
	}
	public function getFromLen() {
		return $this->fromLen;
	}
	public function getToLen() {
		return strlen($this->text);
	}
	public function getText() {
		return $this->text;
	}
	public function getOpcode() {
		if ( $this->fromLen === 1 ) {
			$del_opcode = 'd';
		}
		else {
			$del_opcode = "d{$this->fromLen}";
		}
		$to_len = strlen($this->text);
		if ( $to_len === 1 ) {
			return "{$del_opcode}i:{$this->text}";
		}
		return "{$del_opcode}i{$to_len}:{$this->text}";
	}
}