Файл: src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/CharacterReader/Utf8Reader.php
Строк: 113
<?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.
*/
/**
* Analyzes UTF-8 characters.
*
* @author Chris Corbyn
* @author Xavier De Cock <xdecock@gmail.com>
*/
class Swift_CharacterReader_Utf8Reader implements 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, // 0x0N
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x1N
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x2N
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x3N
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x4N
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x5N
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x6N
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x7N
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0x8N
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0x9N
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0xAN
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0xBN
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // 0xCN
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // 0xDN
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, // 0xEN
4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0, // 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 character map.
*
* @param string $string
* @param int $startOffset
* @param array $currentMap
* @param mixed $ignoredChars
*
* @return int
*/
public function getCharPositions($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 */
$currentMap['p'][$charPos + $foundChars] = $startOffset + $i + $size;
$i += $j - 1;
++$foundChars;
}
}
return $foundChars;
}
/**
* Returns mapType.
*
* @return 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
* @param int $size
*
* @return int
*/
public function validateByteSequence($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;
}
}