| Total Complexity | 63 |
| Total Lines | 288 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like qrsplit often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use qrsplit, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 33 | class qrsplit |
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| 34 | { |
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| 35 | public $dataStr = ''; |
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| 36 | public $input; |
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| 37 | public $modeHint; |
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| 38 | |||
| 39 | //---------------------------------------------------------------------- |
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| 40 | public function __construct($dataStr, $input, $modeHint) |
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| 41 | { |
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| 42 | $this->dataStr = $dataStr; |
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| 43 | $this->input = $input; |
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| 44 | $this->modeHint = $modeHint; |
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| 45 | } |
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| 46 | |||
| 47 | //---------------------------------------------------------------------- |
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| 48 | public static function isdigitat($str, $pos) |
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| 49 | { |
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| 50 | if ($pos >= strlen($str)) { |
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| 51 | return false; |
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| 52 | } |
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| 53 | |||
| 54 | return (ord($str[$pos]) >= ord('0')) && (ord($str[$pos]) <= ord('9')); |
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| 55 | } |
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| 56 | |||
| 57 | //---------------------------------------------------------------------- |
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| 58 | public static function isalnumat($str, $pos) |
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| 59 | { |
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| 60 | if ($pos >= strlen($str)) { |
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| 61 | return false; |
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| 62 | } |
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| 63 | |||
| 64 | return QRinput::lookAnTable(ord($str[$pos])) >= 0; |
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| 65 | } |
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| 66 | |||
| 67 | //---------------------------------------------------------------------- |
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| 68 | public function identifyMode($pos) |
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| 69 | { |
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| 70 | if ($pos >= strlen($this->dataStr)) { |
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| 71 | return QR_MODE_NUL; |
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| 72 | } |
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| 73 | |||
| 74 | $c = $this->dataStr[$pos]; |
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| 75 | |||
| 76 | if (self::isdigitat($this->dataStr, $pos)) { |
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| 77 | return QR_MODE_NUM; |
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| 78 | } elseif (self::isalnumat($this->dataStr, $pos)) { |
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| 79 | return QR_MODE_AN; |
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| 80 | } elseif ($this->modeHint == QR_MODE_KANJI) { |
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| 81 | if ($pos + 1 < strlen($this->dataStr)) { |
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| 82 | $d = $this->dataStr[$pos + 1]; |
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| 83 | $word = (ord($c) << 8) | ord($d); |
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| 84 | if (($word >= 0x8140 && $word <= 0x9ffc) || ($word >= 0xe040 && $word <= 0xebbf)) { |
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| 85 | return QR_MODE_KANJI; |
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| 86 | } |
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| 87 | } |
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| 88 | } |
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| 89 | |||
| 90 | return QR_MODE_8; |
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| 91 | } |
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| 92 | |||
| 93 | //---------------------------------------------------------------------- |
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| 94 | public function eatNum() |
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| 129 | } |
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| 130 | |||
| 131 | //---------------------------------------------------------------------- |
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| 132 | public function eatAn() |
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| 133 | { |
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| 134 | $la = QRspec::lengthIndicator(QR_MODE_AN, $this->input->getVersion()); |
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| 135 | $ln = QRspec::lengthIndicator(QR_MODE_NUM, $this->input->getVersion()); |
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| 136 | |||
| 137 | $p = 0; |
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| 138 | |||
| 139 | while (self::isalnumat($this->dataStr, $p)) { |
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| 140 | if (self::isdigitat($this->dataStr, $p)) { |
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| 141 | $q = $p; |
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| 142 | while (self::isdigitat($this->dataStr, $q)) { |
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| 143 | $q++; |
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| 144 | } |
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| 145 | |||
| 146 | $dif = QRinput::estimateBitsModeAn($p) // + 4 + la |
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| 147 | + QRinput::estimateBitsModeNum($q - $p) + 4 + $ln |
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| 148 | - QRinput::estimateBitsModeAn($q); // - 4 - la |
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| 149 | |||
| 150 | if ($dif < 0) { |
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| 151 | break; |
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| 152 | } else { |
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| 153 | $p = $q; |
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| 154 | } |
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| 155 | } else { |
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| 156 | $p++; |
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| 157 | } |
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| 158 | } |
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| 159 | |||
| 160 | $run = $p; |
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| 161 | |||
| 162 | if (!self::isalnumat($this->dataStr, $p)) { |
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| 163 | $dif = QRinput::estimateBitsModeAn($run) + 4 + $la |
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| 164 | + QRinput::estimateBitsMode8(1) // + 4 + l8 |
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| 165 | - QRinput::estimateBitsMode8($run + 1); // - 4 - l8 |
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| 166 | if ($dif > 0) { |
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| 167 | return $this->eat8(); |
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| 168 | } |
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| 169 | } |
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| 170 | |||
| 171 | $ret = $this->input->append(QR_MODE_AN, $run, str_split($this->dataStr)); |
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| 172 | if ($ret < 0) { |
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| 173 | return -1; |
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| 174 | } |
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| 175 | |||
| 176 | return $run; |
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| 177 | } |
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| 178 | |||
| 179 | //---------------------------------------------------------------------- |
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| 180 | public function eatKanji() |
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| 181 | { |
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| 182 | $p = 0; |
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| 183 | |||
| 184 | while ($this->identifyMode($p) == QR_MODE_KANJI) { |
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| 185 | $p += 2; |
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| 186 | } |
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| 187 | |||
| 188 | $ret = $this->input->append(QR_MODE_KANJI, $p, str_split($this->dataStr)); |
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| 189 | if ($ret < 0) { |
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| 190 | return -1; |
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| 191 | } |
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| 192 | |||
| 193 | return $ret; |
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| 194 | } |
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| 195 | |||
| 196 | //---------------------------------------------------------------------- |
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| 197 | public function eat8() |
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| 198 | { |
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| 199 | $la = QRspec::lengthIndicator(QR_MODE_AN, $this->input->getVersion()); |
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| 200 | $ln = QRspec::lengthIndicator(QR_MODE_NUM, $this->input->getVersion()); |
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| 201 | |||
| 202 | $p = 1; |
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| 203 | $dataStrLen = strlen($this->dataStr); |
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| 204 | |||
| 205 | while ($p < $dataStrLen) { |
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| 206 | $mode = $this->identifyMode($p); |
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| 207 | if ($mode == QR_MODE_KANJI) { |
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| 208 | break; |
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| 209 | } |
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| 210 | if ($mode == QR_MODE_NUM) { |
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| 211 | $q = $p; |
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| 212 | while (self::isdigitat($this->dataStr, $q)) { |
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| 213 | $q++; |
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| 214 | } |
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| 215 | $dif = QRinput::estimateBitsMode8($p) // + 4 + l8 |
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| 216 | + QRinput::estimateBitsModeNum($q - $p) + 4 + $ln |
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| 217 | - QRinput::estimateBitsMode8($q); // - 4 - l8 |
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| 218 | if ($dif < 0) { |
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| 219 | break; |
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| 220 | } else { |
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| 221 | $p = $q; |
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| 222 | } |
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| 223 | } elseif ($mode == QR_MODE_AN) { |
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| 224 | $q = $p; |
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| 225 | while (self::isalnumat($this->dataStr, $q)) { |
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| 226 | $q++; |
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| 227 | } |
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| 228 | $dif = QRinput::estimateBitsMode8($p) // + 4 + l8 |
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| 229 | + QRinput::estimateBitsModeAn($q - $p) + 4 + $la |
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| 230 | - QRinput::estimateBitsMode8($q); // - 4 - l8 |
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| 231 | if ($dif < 0) { |
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| 232 | break; |
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| 233 | } else { |
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| 234 | $p = $q; |
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| 235 | } |
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| 236 | } else { |
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| 237 | $p++; |
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| 238 | } |
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| 239 | } |
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| 240 | |||
| 241 | $run = $p; |
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| 242 | $ret = $this->input->append(QR_MODE_8, $run, str_split($this->dataStr)); |
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| 243 | |||
| 244 | if ($ret < 0) { |
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| 245 | return -1; |
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| 246 | } |
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| 247 | |||
| 248 | return $run; |
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| 249 | } |
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| 250 | |||
| 251 | //---------------------------------------------------------------------- |
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| 252 | public function splitString() |
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| 253 | { |
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| 254 | while (strlen($this->dataStr) > 0) { |
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| 255 | if ($this->dataStr == '') { |
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| 256 | return 0; |
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| 257 | } |
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| 258 | |||
| 259 | $mode = $this->identifyMode(0); |
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| 260 | |||
| 261 | switch ($mode) { |
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| 262 | case QR_MODE_NUM: $length = $this->eatNum(); break; |
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| 263 | case QR_MODE_AN: $length = $this->eatAn(); break; |
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| 264 | case QR_MODE_KANJI: |
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| 265 | if ($mode == QR_MODE_KANJI) { |
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| 266 | $length = $this->eatKanji(); |
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| 267 | } else { |
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| 268 | $length = $this->eat8(); |
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| 269 | } |
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| 270 | break; |
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| 271 | default: $length = $this->eat8(); break; |
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| 272 | |||
| 273 | } |
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| 274 | |||
| 275 | if ($length == 0) { |
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| 276 | return 0; |
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| 277 | } |
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| 278 | if ($length < 0) { |
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| 279 | return -1; |
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| 280 | } |
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| 281 | |||
| 282 | $this->dataStr = substr($this->dataStr, $length); |
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| 283 | } |
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| 284 | } |
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| 285 | |||
| 286 | //---------------------------------------------------------------------- |
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| 287 | public function toUpper() |
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| 305 | } |
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| 306 | |||
| 307 | //---------------------------------------------------------------------- |
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| 308 | public static function splitStringToQRinput($string, QRinput $input, $modeHint, $casesensitive = true) |
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| 309 | { |
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| 321 | } |
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| 322 | } |
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| 323 |