TYPO3  7.6
QpEncoder.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 
18 class Swift_Encoder_QpEncoder implements Swift_Encoder
19 {
25  protected $_charStream;
26 
32  protected $_filter;
33 
39  protected static $_qpMap = array(
40  0 => '=00', 1 => '=01', 2 => '=02', 3 => '=03', 4 => '=04',
41  5 => '=05', 6 => '=06', 7 => '=07', 8 => '=08', 9 => '=09',
42  10 => '=0A', 11 => '=0B', 12 => '=0C', 13 => '=0D', 14 => '=0E',
43  15 => '=0F', 16 => '=10', 17 => '=11', 18 => '=12', 19 => '=13',
44  20 => '=14', 21 => '=15', 22 => '=16', 23 => '=17', 24 => '=18',
45  25 => '=19', 26 => '=1A', 27 => '=1B', 28 => '=1C', 29 => '=1D',
46  30 => '=1E', 31 => '=1F', 32 => '=20', 33 => '=21', 34 => '=22',
47  35 => '=23', 36 => '=24', 37 => '=25', 38 => '=26', 39 => '=27',
48  40 => '=28', 41 => '=29', 42 => '=2A', 43 => '=2B', 44 => '=2C',
49  45 => '=2D', 46 => '=2E', 47 => '=2F', 48 => '=30', 49 => '=31',
50  50 => '=32', 51 => '=33', 52 => '=34', 53 => '=35', 54 => '=36',
51  55 => '=37', 56 => '=38', 57 => '=39', 58 => '=3A', 59 => '=3B',
52  60 => '=3C', 61 => '=3D', 62 => '=3E', 63 => '=3F', 64 => '=40',
53  65 => '=41', 66 => '=42', 67 => '=43', 68 => '=44', 69 => '=45',
54  70 => '=46', 71 => '=47', 72 => '=48', 73 => '=49', 74 => '=4A',
55  75 => '=4B', 76 => '=4C', 77 => '=4D', 78 => '=4E', 79 => '=4F',
56  80 => '=50', 81 => '=51', 82 => '=52', 83 => '=53', 84 => '=54',
57  85 => '=55', 86 => '=56', 87 => '=57', 88 => '=58', 89 => '=59',
58  90 => '=5A', 91 => '=5B', 92 => '=5C', 93 => '=5D', 94 => '=5E',
59  95 => '=5F', 96 => '=60', 97 => '=61', 98 => '=62', 99 => '=63',
60  100 => '=64', 101 => '=65', 102 => '=66', 103 => '=67', 104 => '=68',
61  105 => '=69', 106 => '=6A', 107 => '=6B', 108 => '=6C', 109 => '=6D',
62  110 => '=6E', 111 => '=6F', 112 => '=70', 113 => '=71', 114 => '=72',
63  115 => '=73', 116 => '=74', 117 => '=75', 118 => '=76', 119 => '=77',
64  120 => '=78', 121 => '=79', 122 => '=7A', 123 => '=7B', 124 => '=7C',
65  125 => '=7D', 126 => '=7E', 127 => '=7F', 128 => '=80', 129 => '=81',
66  130 => '=82', 131 => '=83', 132 => '=84', 133 => '=85', 134 => '=86',
67  135 => '=87', 136 => '=88', 137 => '=89', 138 => '=8A', 139 => '=8B',
68  140 => '=8C', 141 => '=8D', 142 => '=8E', 143 => '=8F', 144 => '=90',
69  145 => '=91', 146 => '=92', 147 => '=93', 148 => '=94', 149 => '=95',
70  150 => '=96', 151 => '=97', 152 => '=98', 153 => '=99', 154 => '=9A',
71  155 => '=9B', 156 => '=9C', 157 => '=9D', 158 => '=9E', 159 => '=9F',
72  160 => '=A0', 161 => '=A1', 162 => '=A2', 163 => '=A3', 164 => '=A4',
73  165 => '=A5', 166 => '=A6', 167 => '=A7', 168 => '=A8', 169 => '=A9',
74  170 => '=AA', 171 => '=AB', 172 => '=AC', 173 => '=AD', 174 => '=AE',
75  175 => '=AF', 176 => '=B0', 177 => '=B1', 178 => '=B2', 179 => '=B3',
76  180 => '=B4', 181 => '=B5', 182 => '=B6', 183 => '=B7', 184 => '=B8',
77  185 => '=B9', 186 => '=BA', 187 => '=BB', 188 => '=BC', 189 => '=BD',
78  190 => '=BE', 191 => '=BF', 192 => '=C0', 193 => '=C1', 194 => '=C2',
79  195 => '=C3', 196 => '=C4', 197 => '=C5', 198 => '=C6', 199 => '=C7',
80  200 => '=C8', 201 => '=C9', 202 => '=CA', 203 => '=CB', 204 => '=CC',
81  205 => '=CD', 206 => '=CE', 207 => '=CF', 208 => '=D0', 209 => '=D1',
82  210 => '=D2', 211 => '=D3', 212 => '=D4', 213 => '=D5', 214 => '=D6',
83  215 => '=D7', 216 => '=D8', 217 => '=D9', 218 => '=DA', 219 => '=DB',
84  220 => '=DC', 221 => '=DD', 222 => '=DE', 223 => '=DF', 224 => '=E0',
85  225 => '=E1', 226 => '=E2', 227 => '=E3', 228 => '=E4', 229 => '=E5',
86  230 => '=E6', 231 => '=E7', 232 => '=E8', 233 => '=E9', 234 => '=EA',
87  235 => '=EB', 236 => '=EC', 237 => '=ED', 238 => '=EE', 239 => '=EF',
88  240 => '=F0', 241 => '=F1', 242 => '=F2', 243 => '=F3', 244 => '=F4',
89  245 => '=F5', 246 => '=F6', 247 => '=F7', 248 => '=F8', 249 => '=F9',
90  250 => '=FA', 251 => '=FB', 252 => '=FC', 253 => '=FD', 254 => '=FE',
91  255 => '=FF',
92  );
93 
94  protected static $_safeMapShare = array();
95 
101  protected $_safeMap = array();
102 
109  public function __construct(Swift_CharacterStream $charStream, Swift_StreamFilter $filter = null)
110  {
111  $this->_charStream = $charStream;
112  if (!isset(self::$_safeMapShare[$this->getSafeMapShareId()])) {
113  $this->initSafeMap();
114  self::$_safeMapShare[$this->getSafeMapShareId()] = $this->_safeMap;
115  } else {
116  $this->_safeMap = self::$_safeMapShare[$this->getSafeMapShareId()];
117  }
118  $this->_filter = $filter;
119  }
120 
121  public function __sleep()
122  {
123  return array('_charStream', '_filter');
124  }
125 
126  public function __wakeup()
127  {
128  if (!isset(self::$_safeMapShare[$this->getSafeMapShareId()])) {
129  $this->initSafeMap();
130  self::$_safeMapShare[$this->getSafeMapShareId()] = $this->_safeMap;
131  } else {
132  $this->_safeMap = self::$_safeMapShare[$this->getSafeMapShareId()];
133  }
134  }
135 
136  protected function getSafeMapShareId()
137  {
138  return get_class($this);
139  }
140 
141  protected function initSafeMap()
142  {
143  foreach (array_merge(
144  array(0x09, 0x20), range(0x21, 0x3C), range(0x3E, 0x7E)) as $byte) {
145  $this->_safeMap[$byte] = chr($byte);
146  }
147  }
148 
162  public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0)
163  {
164  if ($maxLineLength > 76 || $maxLineLength <= 0) {
165  $maxLineLength = 76;
166  }
167 
168  $thisLineLength = $maxLineLength - $firstLineOffset;
169 
170  $lines = array();
171  $lNo = 0;
172  $lines[$lNo] = '';
173  $currentLine = &$lines[$lNo++];
174  $size = $lineLen = 0;
175 
176  $this->_charStream->flushContents();
177  $this->_charStream->importString($string);
178 
179  // Fetching more than 4 chars at one is slower, as is fetching fewer bytes
180  // Conveniently 4 chars is the UTF-8 safe number since UTF-8 has up to 6
181  // bytes per char and (6 * 4 * 3 = 72 chars per line) * =NN is 3 bytes
182  while (false !== $bytes = $this->_nextSequence()) {
183  // If we're filtering the input
184  if (isset($this->_filter)) {
185  // If we can't filter because we need more bytes
186  while ($this->_filter->shouldBuffer($bytes)) {
187  // Then collect bytes into the buffer
188  if (false === $moreBytes = $this->_nextSequence(1)) {
189  break;
190  }
191 
192  foreach ($moreBytes as $b) {
193  $bytes[] = $b;
194  }
195  }
196  // And filter them
197  $bytes = $this->_filter->filter($bytes);
198  }
199 
200  $enc = $this->_encodeByteSequence($bytes, $size);
201  if ($currentLine && $lineLen + $size >= $thisLineLength) {
202  $lines[$lNo] = '';
203  $currentLine = &$lines[$lNo++];
204  $thisLineLength = $maxLineLength;
205  $lineLen = 0;
206  }
207  $lineLen += $size;
208  $currentLine .= $enc;
209  }
210 
211  return $this->_standardize(implode("=\r\n", $lines));
212  }
213 
219  public function charsetChanged($charset)
220  {
221  $this->_charStream->setCharacterSet($charset);
222  }
223 
232  protected function _encodeByteSequence(array $bytes, &$size)
233  {
234  $ret = '';
235  $size = 0;
236  foreach ($bytes as $b) {
237  if (isset($this->_safeMap[$b])) {
238  $ret .= $this->_safeMap[$b];
239  ++$size;
240  } else {
241  $ret .= self::$_qpMap[$b];
242  $size += 3;
243  }
244  }
245 
246  return $ret;
247  }
248 
256  protected function _nextSequence($size = 4)
257  {
258  return $this->_charStream->readBytes($size);
259  }
260 
268  protected function _standardize($string)
269  {
270  $string = str_replace(array("\t=0D=0A", ' =0D=0A', '=0D=0A'),
271  array("=09\r\n", "=20\r\n", "\r\n"), $string
272  );
273  switch ($end = ord(substr($string, -1))) {
274  case 0x09:
275  case 0x20:
276  $string = substr_replace($string, self::$_qpMap[$end], -1);
277  }
278 
279  return $string;
280  }
281 
285  public function __clone()
286  {
287  $this->_charStream = clone $this->_charStream;
288  }
289 }
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