85 lines
1.9 KiB
PHP
85 lines
1.9 KiB
PHP
<?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 US-ASCII characters.
|
|
*
|
|
* @author Chris Corbyn
|
|
*/
|
|
class Swift_CharacterReader_UsAsciiReader implements Swift_CharacterReader
|
|
{
|
|
/**
|
|
* Returns the complete character map.
|
|
*
|
|
* @param string $string
|
|
* @param int $startOffset
|
|
* @param array $currentMap
|
|
* @param string $ignoredChars
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)
|
|
{
|
|
$strlen = \strlen($string);
|
|
$ignoredChars = '';
|
|
for ($i = 0; $i < $strlen; ++$i) {
|
|
if ($string[$i] > "\x07F") {
|
|
// Invalid char
|
|
$currentMap[$i + $startOffset] = $string[$i];
|
|
}
|
|
}
|
|
|
|
return $strlen;
|
|
}
|
|
|
|
/**
|
|
* Returns mapType.
|
|
*
|
|
* @return int mapType
|
|
*/
|
|
public function getMapType()
|
|
{
|
|
return self::MAP_TYPE_INVALID;
|
|
}
|
|
|
|
/**
|
|
* 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 string $bytes
|
|
* @param int $size
|
|
*
|
|
* @return int
|
|
*/
|
|
public function validateByteSequence($bytes, $size)
|
|
{
|
|
$byte = reset($bytes);
|
|
if (1 == \count($bytes) && $byte >= 0x00 && $byte <= 0x7F) {
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of bytes which should be read to start each character.
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getInitialByteSize()
|
|
{
|
|
return 1;
|
|
}
|
|
}
|