85 lines
1.9 KiB
PHP
85 lines
1.9 KiB
PHP
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<?php
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/*
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* This file is part of SwiftMailer.
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* (c) 2004-2009 Chris Corbyn
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* Analyzes US-ASCII characters.
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*
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* @author Chris Corbyn
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*/
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class Swift_CharacterReader_UsAsciiReader implements Swift_CharacterReader
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{
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/**
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* Returns the complete character map.
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*
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* @param string $string
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* @param int $startOffset
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* @param array $currentMap
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* @param string $ignoredChars
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*
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* @return int
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*/
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public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)
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{
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$strlen = \strlen($string);
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$ignoredChars = '';
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for ($i = 0; $i < $strlen; ++$i) {
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if ($string[$i] > "\x07F") {
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// Invalid char
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$currentMap[$i + $startOffset] = $string[$i];
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}
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}
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return $strlen;
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}
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/**
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* Returns mapType.
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*
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* @return int mapType
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*/
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public function getMapType()
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{
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return self::MAP_TYPE_INVALID;
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}
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/**
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* Returns an integer which specifies how many more bytes to read.
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*
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* A positive integer indicates the number of more bytes to fetch before invoking
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* this method again.
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* A value of zero means this is already a valid character.
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* A value of -1 means this cannot possibly be a valid character.
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*
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* @param string $bytes
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* @param int $size
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*
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* @return int
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*/
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public function validateByteSequence($bytes, $size)
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{
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$byte = reset($bytes);
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if (1 == \count($bytes) && $byte >= 0x00 && $byte <= 0x7F) {
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return 0;
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}
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return -1;
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}
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/**
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* Returns the number of bytes which should be read to start each character.
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*
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* @return int
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*/
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public function getInitialByteSize()
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{
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return 1;
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}
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}
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