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 

    12 /**

    13  * Analyzes US-ASCII characters.

    14  * @package Swift

    15  * @subpackage Encoder

    16  * @author Chris Corbyn

    17  */

    18 class Swift_CharacterReader_UsAsciiReader

    19   implements Swift_CharacterReader

    20 {

    21   /**

    22    * Returns the complete charactermap

    23    *

    24    * @param string $string

    25    * @param int $startOffset

    26    * @param string $ignoredChars

    27    */

    28   public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)

    29   {

    30   	$strlen=strlen($string);

    31   	$ignoredChars='';

    32   	for( $i = 0; $i < $strlen; ++$i)

    33   	{

    34   	  if ($string[$i]>"\x07F")

    35   	  { // Invalid char

    36   	  	$currentMap[$i+$startOffset]=$string[$i];

    37   	  }

    38   	}

    39   	return $strlen;

    40   }

    41   

    42   /**

    43    * Returns mapType

    44    * @int mapType

    45    */

    46   public function getMapType()

    47   {

    48   	return self::MAP_TYPE_INVALID;

    49   }

    50  

    51   /**

    52    * Returns an integer which specifies how many more bytes to read.

    53    * A positive integer indicates the number of more bytes to fetch before invoking

    54    * this method again.

    55    * A value of zero means this is already a valid character.

    56    * A value of -1 means this cannot possibly be a valid character.

    57    * @param string $bytes

    58    * @return int

    59    */

    60   public function validateByteSequence($bytes, $size)

    61   {

    62     $byte = reset($bytes);

    63     if (1 == count($bytes) && $byte >= 0x00 && $byte <= 0x7F)

    64     {

    65       return 0;

    66     }

    67     else

    68     {

    69       return -1;

    70     }

    71   }

    72 

    73   /**

    74    * Returns the number of bytes which should be read to start each character.

    75    * @return int

    76    */

    77   public function getInitialByteSize()

    78   {

    79     return 1;

    80   }

    81 

    82 }