/framework/vendor/swift/lib/classes/Swift/CharacterReader/UsAsciiReader.php

 1<?php
 2
 3/*
 4 * This file is part of SwiftMailer.
 5 * (c) 2004-2009 Chris Corbyn
 6 *
 7 * For the full copyright and license information, please view the LICENSE
 8 * file that was distributed with this source code.
 9 */
10
11//@require 'Swift/CharacterReader.php';
12
13/**
14 * Analyzes US-ASCII characters.
15 * @package Swift
16 * @subpackage Encoder
17 * @author Chris Corbyn
18 */
19class Swift_CharacterReader_UsAsciiReader
20  implements Swift_CharacterReader
21{
22  /**
23   * Returns the complete charactermap
24   *
25   * @param string $string
26   * @param int $startOffset
27   * @param string $ignoredChars
28   */
29  public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)
30  {
31  	$strlen=strlen($string);
32  	$ignoredChars='';
33  	for( $i = 0; $i < $strlen; ++$i)
34  	{
35  	  if ($string[$i]>"\x07F")
36  	  { // Invalid char
37  	  	$currentMap[$i+$startOffset]=$string[$i];
38  	  }
39  	}
40  	return $strlen;
41  }
42  
43  /**
44   * Returns mapType
45   * @int mapType
46   */
47  public function getMapType()
48  {
49  	return self::MAP_TYPE_INVALID;
50  }
51 
52  /**
53   * Returns an integer which specifies how many more bytes to read.
54   * A positive integer indicates the number of more bytes to fetch before invoking
55   * this method again.
56   * A value of zero means this is already a valid character.
57   * A value of -1 means this cannot possibly be a valid character.
58   * @param string $bytes
59   * @return int
60   */
61  public function validateByteSequence($bytes, $size)
62  {
63    $byte = reset($bytes);
64    if (1 == count($bytes) && $byte >= 0x00 && $byte <= 0x7F)
65    {
66      return 0;
67    }
68    else
69    {
70      return -1;
71    }
72  }
73
74  /**
75   * Returns the number of bytes which should be read to start each character.
76   * @return int
77   */
78  public function getInitialByteSize()
79  {
80    return 1;
81  }
82
83}