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<?php
/*
* This file is part of SwiftMailer.
* (c) 2004-2009 Chris Corbyn
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Analyzes characters for a specific character set.
*
* @author Chris Corbyn
* @author Xavier De Cock <xdecock@gmail.com>
*/
interface Swift_CharacterReader
{
const MAP_TYPE_INVALID = 0x01;
const MAP_TYPE_FIXED_LEN = 0x02;
const MAP_TYPE_POSITIONS = 0x03;
/**
* Returns the complete character map
*
* @param string $string
* @param int $startOffset
* @param array $currentMap
* @param mixed $ignoredChars
*
* @return int
*/
public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars);
/**
* Returns the mapType, see constants.
*
* @return int
*/
public function getMapType();
/**
* Returns an integer which specifies how many more bytes to read.
*
* A positive integer indicates the number of more bytes to fetch before invoking
* this method again.
*
* A value of zero means this is already a valid character.
* A value of -1 means this cannot possibly be a valid character.
*
* @param integer[] $bytes
* @param int $size
*
* @return int
*/
public function validateByteSequence($bytes, $size);
/**
* Returns the number of bytes which should be read to start each character.
*
* For fixed width character sets this should be the number of octets-per-character.
* For multibyte character sets this will probably be 1.
*
* @return int
*/
public function getInitialByteSize();
}
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