1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
<?php
/**
* Class Mode
*
* @created 19.11.2020
* @author smiley <smiley@chillerlan.net>
* @copyright 2020 smiley
* @license MIT
*/
namespace chillerlan\QRCode\Common;
use chillerlan\QRCode\Data\{AlphaNum, Byte, Hanzi, Kanji, Number};
use chillerlan\QRCode\QRCodeException;
/**
* Data mode information - ISO 18004:2006, 6.4.1, Tables 2 and 3
*/
final class Mode{
// ISO/IEC 18004:2000 Table 2
/** @var int */
public const TERMINATOR = 0b0000;
/** @var int */
public const NUMBER = 0b0001;
/** @var int */
public const ALPHANUM = 0b0010;
/** @var int */
public const BYTE = 0b0100;
/** @var int */
public const KANJI = 0b1000;
/** @var int */
public const HANZI = 0b1101;
/** @var int */
public const STRCTURED_APPEND = 0b0011;
/** @var int */
public const FNC1_FIRST = 0b0101;
/** @var int */
public const FNC1_SECOND = 0b1001;
/** @var int */
public const ECI = 0b0111;
/**
* mode length bits for the version breakpoints 1-9, 10-26 and 27-40
*
* ISO/IEC 18004:2000 Table 3 - Number of bits in Character Count Indicator
*/
public const LENGTH_BITS = [
self::NUMBER => [10, 12, 14],
self::ALPHANUM => [ 9, 11, 13],
self::BYTE => [ 8, 16, 16],
self::KANJI => [ 8, 10, 12],
self::HANZI => [ 8, 10, 12],
self::ECI => [ 0, 0, 0],
];
/**
* Map of data mode => interface (detection order)
*
* @var string[]
*/
public const INTERFACES = [
self::NUMBER => Number::class,
self::ALPHANUM => AlphaNum::class,
self::KANJI => Kanji::class,
self::HANZI => Hanzi::class,
self::BYTE => Byte::class,
];
/**
* returns the length bits for the version breakpoints 1-9, 10-26 and 27-40
*
* @throws \chillerlan\QRCode\QRCodeException
*/
public static function getLengthBitsForVersion(int $mode, int $version):int{
if(!isset(self::LENGTH_BITS[$mode])){
throw new QRCodeException('invalid mode given');
}
$minVersion = 0;
foreach([9, 26, 40] as $key => $breakpoint){
if($version > $minVersion && $version <= $breakpoint){
return self::LENGTH_BITS[$mode][$key];
}
$minVersion = $breakpoint;
}
throw new QRCodeException(sprintf('invalid version number: %d', $version));
}
}
|
