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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';/*** Analyzes UTF-8 characters.* @package Swift* @subpackage Encoder* @author Chris Corbyn* @author Xavier De Cock <xdecock@gmail.com>*/class Swift_CharacterReader_Utf8Readerimplements Swift_CharacterReader{/** Pre-computed for optimization */private static $length_map=array(//N=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x0N1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x1N1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x2N1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x3N1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x4N1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x5N1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x6N1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, //0x7N0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, //0x8N0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, //0x9N0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, //0xAN0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, //0xBN2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, //0xCN2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, //0xDN3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, //0xEN4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0 //0xFN);private static $s_length_map=array("\x00"=>1, "\x01"=>1, "\x02"=>1, "\x03"=>1, "\x04"=>1, "\x05"=>1, "\x06"=>1, "\x07"=>1,"\x08"=>1, "\x09"=>1, "\x0a"=>1, "\x0b"=>1, "\x0c"=>1, "\x0d"=>1, "\x0e"=>1, "\x0f"=>1,"\x10"=>1, "\x11"=>1, "\x12"=>1, "\x13"=>1, "\x14"=>1, "\x15"=>1, "\x16"=>1, "\x17"=>1,"\x18"=>1, "\x19"=>1, "\x1a"=>1, "\x1b"=>1, "\x1c"=>1, "\x1d"=>1, "\x1e"=>1, "\x1f"=>1,"\x20"=>1, "\x21"=>1, "\x22"=>1, "\x23"=>1, "\x24"=>1, "\x25"=>1, "\x26"=>1, "\x27"=>1,"\x28"=>1, "\x29"=>1, "\x2a"=>1, "\x2b"=>1, "\x2c"=>1, "\x2d"=>1, "\x2e"=>1, "\x2f"=>1,"\x30"=>1, "\x31"=>1, "\x32"=>1, "\x33"=>1, "\x34"=>1, "\x35"=>1, "\x36"=>1, "\x37"=>1,"\x38"=>1, "\x39"=>1, "\x3a"=>1, "\x3b"=>1, "\x3c"=>1, "\x3d"=>1, "\x3e"=>1, "\x3f"=>1,"\x40"=>1, "\x41"=>1, "\x42"=>1, "\x43"=>1, "\x44"=>1, "\x45"=>1, "\x46"=>1, "\x47"=>1,"\x48"=>1, "\x49"=>1, "\x4a"=>1, "\x4b"=>1, "\x4c"=>1, "\x4d"=>1, "\x4e"=>1, "\x4f"=>1,"\x50"=>1, "\x51"=>1, "\x52"=>1, "\x53"=>1, "\x54"=>1, "\x55"=>1, "\x56"=>1, "\x57"=>1,"\x58"=>1, "\x59"=>1, "\x5a"=>1, "\x5b"=>1, "\x5c"=>1, "\x5d"=>1, "\x5e"=>1, "\x5f"=>1,"\x60"=>1, "\x61"=>1, "\x62"=>1, "\x63"=>1, "\x64"=>1, "\x65"=>1, "\x66"=>1, "\x67"=>1,"\x68"=>1, "\x69"=>1, "\x6a"=>1, "\x6b"=>1, "\x6c"=>1, "\x6d"=>1, "\x6e"=>1, "\x6f"=>1,"\x70"=>1, "\x71"=>1, "\x72"=>1, "\x73"=>1, "\x74"=>1, "\x75"=>1, "\x76"=>1, "\x77"=>1,"\x78"=>1, "\x79"=>1, "\x7a"=>1, "\x7b"=>1, "\x7c"=>1, "\x7d"=>1, "\x7e"=>1, "\x7f"=>1,"\x80"=>0, "\x81"=>0, "\x82"=>0, "\x83"=>0, "\x84"=>0, "\x85"=>0, "\x86"=>0, "\x87"=>0,"\x88"=>0, "\x89"=>0, "\x8a"=>0, "\x8b"=>0, "\x8c"=>0, "\x8d"=>0, "\x8e"=>0, "\x8f"=>0,"\x90"=>0, "\x91"=>0, "\x92"=>0, "\x93"=>0, "\x94"=>0, "\x95"=>0, "\x96"=>0, "\x97"=>0,"\x98"=>0, "\x99"=>0, "\x9a"=>0, "\x9b"=>0, "\x9c"=>0, "\x9d"=>0, "\x9e"=>0, "\x9f"=>0,"\xa0"=>0, "\xa1"=>0, "\xa2"=>0, "\xa3"=>0, "\xa4"=>0, "\xa5"=>0, "\xa6"=>0, "\xa7"=>0,"\xa8"=>0, "\xa9"=>0, "\xaa"=>0, "\xab"=>0, "\xac"=>0, "\xad"=>0, "\xae"=>0, "\xaf"=>0,"\xb0"=>0, "\xb1"=>0, "\xb2"=>0, "\xb3"=>0, "\xb4"=>0, "\xb5"=>0, "\xb6"=>0, "\xb7"=>0,"\xb8"=>0, "\xb9"=>0, "\xba"=>0, "\xbb"=>0, "\xbc"=>0, "\xbd"=>0, "\xbe"=>0, "\xbf"=>0,"\xc0"=>2, "\xc1"=>2, "\xc2"=>2, "\xc3"=>2, "\xc4"=>2, "\xc5"=>2, "\xc6"=>2, "\xc7"=>2,"\xc8"=>2, "\xc9"=>2, "\xca"=>2, "\xcb"=>2, "\xcc"=>2, "\xcd"=>2, "\xce"=>2, "\xcf"=>2,"\xd0"=>2, "\xd1"=>2, "\xd2"=>2, "\xd3"=>2, "\xd4"=>2, "\xd5"=>2, "\xd6"=>2, "\xd7"=>2,"\xd8"=>2, "\xd9"=>2, "\xda"=>2, "\xdb"=>2, "\xdc"=>2, "\xdd"=>2, "\xde"=>2, "\xdf"=>2,"\xe0"=>3, "\xe1"=>3, "\xe2"=>3, "\xe3"=>3, "\xe4"=>3, "\xe5"=>3, "\xe6"=>3, "\xe7"=>3,"\xe8"=>3, "\xe9"=>3, "\xea"=>3, "\xeb"=>3, "\xec"=>3, "\xed"=>3, "\xee"=>3, "\xef"=>3,"\xf0"=>4, "\xf1"=>4, "\xf2"=>4, "\xf3"=>4, "\xf4"=>4, "\xf5"=>4, "\xf6"=>4, "\xf7"=>4,"\xf8"=>5, "\xf9"=>5, "\xfa"=>5, "\xfb"=>5, "\xfc"=>6, "\xfd"=>6, "\xfe"=>0, "\xff"=>0,);/*** Returns the complete charactermap** @param string $string* @param int $startOffset* @param array $currentMap* @param mixed $ignoredChars*/public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars){if (!isset($currentMap['i']) || !isset($currentMap['p'])){$currentMap['p'] = $currentMap['i'] = array();}$strlen=strlen($string);$charPos=count($currentMap['p']);$foundChars=0;$invalid=false;for ($i=0; $i<$strlen; ++$i){$char=$string[$i];$size=self::$s_length_map[$char];if ($size==0){/* char is invalid, we must wait for a resync */$invalid=true;continue;}else{if ($invalid==true){/* We mark the chars as invalid and start a new char */$currentMap['p'][$charPos+$foundChars]=$startOffset+$i;$currentMap['i'][$charPos+$foundChars]=true;++$foundChars;$invalid=false;}if (($i+$size) > $strlen){$ignoredChars=substr($string, $i);break;}for ($j=1; $j<$size; ++$j){$char=$string[$i+$j];if ($char>"\x7F" && $char<"\xC0"){// Valid - continue parsing}else{/* char is invalid, we must wait for a resync */$invalid=true;continue 2;}}/* Ok we got a complete char here */$lastChar=$currentMap['p'][$charPos+$foundChars]=$startOffset+$i+$size;$i+=$j-1;++$foundChars;}}return $foundChars;}/*** Returns mapType* @int mapType*/public function getMapType(){return self::MAP_TYPE_POSITIONS;}/*** 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 $bytes* @return int*/public function validateByteSequence($bytes, $size){if ($size<1){return -1;}$needed = self::$length_map[$bytes[0]] - $size;return ($needed > -1)? $needed: -1;}/*** Returns the number of bytes which should be read to start each character.* @return int*/public function getInitialByteSize(){return 1;}}