TYPO3  7.6
Utf8Reader.php
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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 
17 class Swift_CharacterReader_Utf8Reader implements Swift_CharacterReader
18 {
20  private static $length_map = array(
21  // N=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,
22  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x0N
23  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x1N
24  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x2N
25  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x3N
26  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x4N
27  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x5N
28  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x6N
29  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x7N
30  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0x8N
31  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0x9N
32  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0xAN
33  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0xBN
34  2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // 0xCN
35  2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // 0xDN
36  3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, // 0xEN
37  4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0, // 0xFN
38  );
39 
40  private static $s_length_map = array(
41  "\x00" => 1, "\x01" => 1, "\x02" => 1, "\x03" => 1, "\x04" => 1, "\x05" => 1, "\x06" => 1, "\x07" => 1,
42  "\x08" => 1, "\x09" => 1, "\x0a" => 1, "\x0b" => 1, "\x0c" => 1, "\x0d" => 1, "\x0e" => 1, "\x0f" => 1,
43  "\x10" => 1, "\x11" => 1, "\x12" => 1, "\x13" => 1, "\x14" => 1, "\x15" => 1, "\x16" => 1, "\x17" => 1,
44  "\x18" => 1, "\x19" => 1, "\x1a" => 1, "\x1b" => 1, "\x1c" => 1, "\x1d" => 1, "\x1e" => 1, "\x1f" => 1,
45  "\x20" => 1, "\x21" => 1, "\x22" => 1, "\x23" => 1, "\x24" => 1, "\x25" => 1, "\x26" => 1, "\x27" => 1,
46  "\x28" => 1, "\x29" => 1, "\x2a" => 1, "\x2b" => 1, "\x2c" => 1, "\x2d" => 1, "\x2e" => 1, "\x2f" => 1,
47  "\x30" => 1, "\x31" => 1, "\x32" => 1, "\x33" => 1, "\x34" => 1, "\x35" => 1, "\x36" => 1, "\x37" => 1,
48  "\x38" => 1, "\x39" => 1, "\x3a" => 1, "\x3b" => 1, "\x3c" => 1, "\x3d" => 1, "\x3e" => 1, "\x3f" => 1,
49  "\x40" => 1, "\x41" => 1, "\x42" => 1, "\x43" => 1, "\x44" => 1, "\x45" => 1, "\x46" => 1, "\x47" => 1,
50  "\x48" => 1, "\x49" => 1, "\x4a" => 1, "\x4b" => 1, "\x4c" => 1, "\x4d" => 1, "\x4e" => 1, "\x4f" => 1,
51  "\x50" => 1, "\x51" => 1, "\x52" => 1, "\x53" => 1, "\x54" => 1, "\x55" => 1, "\x56" => 1, "\x57" => 1,
52  "\x58" => 1, "\x59" => 1, "\x5a" => 1, "\x5b" => 1, "\x5c" => 1, "\x5d" => 1, "\x5e" => 1, "\x5f" => 1,
53  "\x60" => 1, "\x61" => 1, "\x62" => 1, "\x63" => 1, "\x64" => 1, "\x65" => 1, "\x66" => 1, "\x67" => 1,
54  "\x68" => 1, "\x69" => 1, "\x6a" => 1, "\x6b" => 1, "\x6c" => 1, "\x6d" => 1, "\x6e" => 1, "\x6f" => 1,
55  "\x70" => 1, "\x71" => 1, "\x72" => 1, "\x73" => 1, "\x74" => 1, "\x75" => 1, "\x76" => 1, "\x77" => 1,
56  "\x78" => 1, "\x79" => 1, "\x7a" => 1, "\x7b" => 1, "\x7c" => 1, "\x7d" => 1, "\x7e" => 1, "\x7f" => 1,
57  "\x80" => 0, "\x81" => 0, "\x82" => 0, "\x83" => 0, "\x84" => 0, "\x85" => 0, "\x86" => 0, "\x87" => 0,
58  "\x88" => 0, "\x89" => 0, "\x8a" => 0, "\x8b" => 0, "\x8c" => 0, "\x8d" => 0, "\x8e" => 0, "\x8f" => 0,
59  "\x90" => 0, "\x91" => 0, "\x92" => 0, "\x93" => 0, "\x94" => 0, "\x95" => 0, "\x96" => 0, "\x97" => 0,
60  "\x98" => 0, "\x99" => 0, "\x9a" => 0, "\x9b" => 0, "\x9c" => 0, "\x9d" => 0, "\x9e" => 0, "\x9f" => 0,
61  "\xa0" => 0, "\xa1" => 0, "\xa2" => 0, "\xa3" => 0, "\xa4" => 0, "\xa5" => 0, "\xa6" => 0, "\xa7" => 0,
62  "\xa8" => 0, "\xa9" => 0, "\xaa" => 0, "\xab" => 0, "\xac" => 0, "\xad" => 0, "\xae" => 0, "\xaf" => 0,
63  "\xb0" => 0, "\xb1" => 0, "\xb2" => 0, "\xb3" => 0, "\xb4" => 0, "\xb5" => 0, "\xb6" => 0, "\xb7" => 0,
64  "\xb8" => 0, "\xb9" => 0, "\xba" => 0, "\xbb" => 0, "\xbc" => 0, "\xbd" => 0, "\xbe" => 0, "\xbf" => 0,
65  "\xc0" => 2, "\xc1" => 2, "\xc2" => 2, "\xc3" => 2, "\xc4" => 2, "\xc5" => 2, "\xc6" => 2, "\xc7" => 2,
66  "\xc8" => 2, "\xc9" => 2, "\xca" => 2, "\xcb" => 2, "\xcc" => 2, "\xcd" => 2, "\xce" => 2, "\xcf" => 2,
67  "\xd0" => 2, "\xd1" => 2, "\xd2" => 2, "\xd3" => 2, "\xd4" => 2, "\xd5" => 2, "\xd6" => 2, "\xd7" => 2,
68  "\xd8" => 2, "\xd9" => 2, "\xda" => 2, "\xdb" => 2, "\xdc" => 2, "\xdd" => 2, "\xde" => 2, "\xdf" => 2,
69  "\xe0" => 3, "\xe1" => 3, "\xe2" => 3, "\xe3" => 3, "\xe4" => 3, "\xe5" => 3, "\xe6" => 3, "\xe7" => 3,
70  "\xe8" => 3, "\xe9" => 3, "\xea" => 3, "\xeb" => 3, "\xec" => 3, "\xed" => 3, "\xee" => 3, "\xef" => 3,
71  "\xf0" => 4, "\xf1" => 4, "\xf2" => 4, "\xf3" => 4, "\xf4" => 4, "\xf5" => 4, "\xf6" => 4, "\xf7" => 4,
72  "\xf8" => 5, "\xf9" => 5, "\xfa" => 5, "\xfb" => 5, "\xfc" => 6, "\xfd" => 6, "\xfe" => 0, "\xff" => 0,
73  );
74 
85  public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars)
86  {
87  if (!isset($currentMap['i']) || !isset($currentMap['p'])) {
88  $currentMap['p'] = $currentMap['i'] = array();
89  }
90 
91  $strlen = strlen($string);
92  $charPos = count($currentMap['p']);
93  $foundChars = 0;
94  $invalid = false;
95  for ($i = 0; $i < $strlen; ++$i) {
96  $char = $string[$i];
97  $size = self::$s_length_map[$char];
98  if ($size == 0) {
99  /* char is invalid, we must wait for a resync */
100  $invalid = true;
101  continue;
102  } else {
103  if ($invalid == true) {
104  /* We mark the chars as invalid and start a new char */
105  $currentMap['p'][$charPos + $foundChars] = $startOffset + $i;
106  $currentMap['i'][$charPos + $foundChars] = true;
107  ++$foundChars;
108  $invalid = false;
109  }
110  if (($i + $size) > $strlen) {
111  $ignoredChars = substr($string, $i);
112  break;
113  }
114  for ($j = 1; $j < $size; ++$j) {
115  $char = $string[$i + $j];
116  if ($char > "\x7F" && $char < "\xC0") {
117  // Valid - continue parsing
118  } else {
119  /* char is invalid, we must wait for a resync */
120  $invalid = true;
121  continue 2;
122  }
123  }
124  /* Ok we got a complete char here */
125  $currentMap['p'][$charPos + $foundChars] = $startOffset + $i + $size;
126  $i += $j - 1;
127  ++$foundChars;
128  }
129  }
130 
131  return $foundChars;
132  }
133 
139  public function getMapType()
140  {
141  return self::MAP_TYPE_POSITIONS;
142  }
143 
157  public function validateByteSequence($bytes, $size)
158  {
159  if ($size < 1) {
160  return -1;
161  }
162  $needed = self::$length_map[$bytes[0]] - $size;
163 
164  return ($needed > -1)
165  ? $needed
166  : -1
167  ;
168  }
169 
175  public function getInitialByteSize()
176  {
177  return 1;
178  }
179 }
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