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<?php /* * Copyright 2007 ZXing authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ namespace Zxing\Qrcode\Decoder; /** * <p>See ISO 18004:2006, 6.4.1, Tables 2 and 3. This enum encapsulates the various modes in which * data can be encoded to bits in the QR code standard.</p> * * @author Sean Owen */ class Mode { public static $TERMINATOR; public static $NUMERIC; public static $ALPHANUMERIC; public static $STRUCTURED_APPEND; public static $BYTE; public static $ECI; public static $KANJI; public static $FNC1_FIRST_POSITION; public static $FNC1_SECOND_POSITION; public static $HANZI; private $characterCountBitsForVersions; private $bits; public function __construct($characterCountBitsForVersions, $bits) { $this->characterCountBitsForVersions = $characterCountBitsForVersions; $this->bits = $bits; } public static function Init() { self::$TERMINATOR = new Mode([0, 0, 0], 0x00); // Not really a mode... self::$NUMERIC = new Mode([10, 12, 14], 0x01); self::$ALPHANUMERIC = new Mode([9, 11, 13], 0x02); self::$STRUCTURED_APPEND = new Mode([0, 0, 0], 0x03); // Not supported self::$BYTE = new Mode([8, 16, 16], 0x04); self::$ECI = new Mode([0, 0, 0], 0x07); // character counts don't apply self::$KANJI = new Mode([8, 10, 12], 0x08); self::$FNC1_FIRST_POSITION = new Mode([0, 0, 0], 0x05); self::$FNC1_SECOND_POSITION = new Mode([0, 0, 0], 0x09); /** See GBT 18284-2000; "Hanzi" is a transliteration of this mode name. */ self::$HANZI = new Mode([8, 10, 12], 0x0D); } /** * @param bits four bits encoding a QR Code data mode * * @return Mode encoded by these bits * @throws InvalidArgumentException if bits do not correspond to a known mode */ public static function forBits($bits) { switch ($bits) { case 0x0: return self::$TERMINATOR; case 0x1: return self::$NUMERIC; case 0x2: return self::$ALPHANUMERIC; case 0x3: return self::$STRUCTURED_APPEND; case 0x4: return self::$BYTE; case 0x5: return self::$FNC1_FIRST_POSITION; case 0x7: return self::$ECI; case 0x8: return self::$KANJI; case 0x9: return self::$FNC1_SECOND_POSITION; case 0xD: // 0xD is defined in GBT 18284-2000, may not be supported in foreign country return self::$HANZI; default: throw new \InvalidArgumentException(); } } /** * @param version version in question * * @return number of bits used, in this QR Code symbol {@link Version}, to encode the * count of characters that will follow encoded in this Mode */ public function getCharacterCountBits($version) { $number = $version->getVersionNumber(); $offset = 0; if ($number <= 9) { $offset = 0; } else if ($number <= 26) { $offset = 1; } else { $offset = 2; } return $this->characterCountBitsForVersions[$offset]; } public function getBits() { return $this->bits; } } Mode::Init();
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