UsAsciiReader.php

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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.
 */

//@require 'Swift/CharacterReader.php';

class Swift_CharacterReader_UsAsciiReader
  implements Swift_CharacterReader
{
  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;
  }
  
  public function getMapType()
  {
        return self::MAP_TYPE_INVALID;
  }
 
  public function validateByteSequence($bytes, $size)
  {
    $byte = reset($bytes);
    if (1 == count($bytes) && $byte >= 0x00 && $byte <= 0x7F)
    {
      return 0;
    }
    else
    {
      return -1;
    }
  }

  public function getInitialByteSize()
  {
    return 1;
  }

}