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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;
public function __construct(private $characterCountBitsForVersions, private $bits)
{
}
public static function Init(): void
{
self::$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 int $bits four bits encoding a QR Code data mode
*
* @return Mode encoded by these bits
* @throws \InvalidArgumentException if bits do not correspond to a known mode
*/
public static function forBits($bits)
{
return match ($bits) {
0x0 => self::$TERMINATOR,
0x1 => self::$NUMERIC,
0x2 => self::$ALPHANUMERIC,
0x3 => self::$STRUCTURED_APPEND,
0x4 => self::$BYTE,
0x5 => self::$FNC1_FIRST_POSITION,
0x7 => self::$ECI,
0x8 => self::$KANJI,
0x9 => self::$FNC1_SECOND_POSITION,
0xD => self::$HANZI,
default => throw new \InvalidArgumentException(),
};
}
/**
* @param version $version in question
*
* @return int 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(\Zxing\Qrcode\Decoder\version $version)
{
$number = $version->getVersionNumber();
$offset = 0;
if ($number <= 9) {
$offset = 0;
} elseif ($number <= 26) {
$offset = 1;
} else {
$offset = 2;
}
return $this->characterCountBitsForVersions[$offset];
}
public function getBits()
{
return $this->bits;
}
}
Mode::Init();
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