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