44 lines
719 B
PHP
44 lines
719 B
PHP
<?php
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namespace PhpZip\Mapper;
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/**
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* Adds a offset value to the given position.
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*
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* @author Ne-Lexa alexey@nelexa.ru
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* @license MIT
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*/
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class OffsetPositionMapper extends PositionMapper
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{
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/**
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* @var int
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*/
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private $offset;
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/**
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* @param int $offset
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*/
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public function __construct($offset)
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{
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$this->offset = (int)$offset;
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}
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/**
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* @param int $position
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* @return int
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*/
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public function map($position)
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{
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return parent::map($position) + $this->offset;
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}
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/**
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* @param int $position
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* @return int
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*/
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public function unmap($position)
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{
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return parent::unmap($position) - $this->offset;
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}
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}
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