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codemashercodemasher
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:octocat: i hate this less (might be slightly slower tho)
1 parent 9aecdcd commit 9964cf8

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2 files changed

+42
-74
lines changed

2 files changed

+42
-74
lines changed

‎src/Data/AlphaNum.php‎

Lines changed: 34 additions & 41 deletions
Original file line numberDiff line numberDiff line change
@@ -12,7 +12,7 @@
1212
namespace chillerlan\QRCode\Data;
1313

1414
use chillerlan\QRCode\Common\{BitBuffer, Mode};
15-
use function ceil, intdiv, str_split;
15+
use function ceil, intdiv, preg_match, strpos;
1616

1717
/**
1818
* Alphanumeric mode: 0 to 9, A to Z, space, $ % * + - . / :
@@ -25,30 +25,9 @@ final class AlphaNum extends QRDataModeAbstract{
2525
/**
2626
* ISO/IEC 18004:2000 Table 5
2727
*
28-
* @var int[]
28+
* @var string
2929
*/
30-
private const CHAR_TO_ORD = [
31-
// phpcs:ignore
32-
'0' => 0, '1' => 1, '2' => 2, '3' => 3, '4' => 4, '5' => 5, '6' => 6, '7' => 7,
33-
// phpcs:ignore
34-
'8' => 8, '9' => 9, 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13, 'E' => 14, 'F' => 15,
35-
'G' => 16, 'H' => 17, 'I' => 18, 'J' => 19, 'K' => 20, 'L' => 21, 'M' => 22, 'N' => 23,
36-
'O' => 24, 'P' => 25, 'Q' => 26, 'R' => 27, 'S' => 28, 'T' => 29, 'U' => 30, 'V' => 31,
37-
'W' => 32, 'X' => 33, 'Y' => 34, 'Z' => 35, ' ' => 36, '$' => 37, '%' => 38, '*' => 39,
38-
'+' => 40, '-' => 41, '.' => 42, '/' => 43, ':' => 44,
39-
];
40-
41-
/**
42-
* @var string[]
43-
*/
44-
private const ORD_TO_CHAR = [
45-
'0', '1', '2', '3', '4', '5', '6', '7',
46-
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
47-
'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
48-
'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
49-
'W', 'X', 'Y', 'Z', ' ', '$', '%', '*',
50-
'+', '-', '.', '/', ':',
51-
];
30+
private const CHAR_MAP = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:';
5231

5332
public const DATAMODE = Mode::ALPHANUM;
5433

@@ -57,18 +36,7 @@ public function getLengthInBits():int{
5736
}
5837

5938
public static function validateString(string $string):bool{
60-
61-
if($string === ''){
62-
return false;
63-
}
64-
65-
foreach(str_split($string) as $chr){
66-
if(!isset(self::CHAR_TO_ORD[$chr])){
67-
return false;
68-
}
69-
}
70-
71-
return true;
39+
return (bool)preg_match('#^['.self::CHAR_MAP.']+$#', $string);
7240
}
7341

7442
public function write(BitBuffer $bitBuffer, int $versionNumber):static{
@@ -82,14 +50,14 @@ public function write(BitBuffer $bitBuffer, int $versionNumber):static{
8250
// encode 2 characters in 11 bits
8351
for($i = 0; ($i + 1) < $len; $i += 2){
8452
$bitBuffer->put(
85-
(self::CHAR_TO_ORD[$this->data[$i]] * 45 + self::CHAR_TO_ORD[$this->data[($i + 1)]]),
53+
($this->ord($this->data[$i]) * 45 + $this->ord($this->data[($i + 1)])),
8654
11,
8755
);
8856
}
8957

9058
// encode a remaining character in 6 bits
9159
if($i < $len){
92-
$bitBuffer->put(self::CHAR_TO_ORD[$this->data[$i]], 6);
60+
$bitBuffer->put($this->ord($this->data[$i]), 6);
9361
}
9462

9563
return $this;
@@ -111,8 +79,8 @@ public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):s
11179
}
11280

11381
$nextTwoCharsBits = $bitBuffer->read(11);
114-
$result .= self::ORD_TO_CHAR[intdiv($nextTwoCharsBits, 45)];
115-
$result .= self::ORD_TO_CHAR[($nextTwoCharsBits % 45)];
82+
$result .= self::chr(intdiv($nextTwoCharsBits, 45));
83+
$result .= self::chr($nextTwoCharsBits % 45);
11684
$length -= 2;
11785
}
11886

@@ -122,10 +90,35 @@ public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):s
12290
throw new QRCodeDataException('not enough bits available'); // @codeCoverageIgnore
12391
}
12492

125-
$result .= self::ORD_TO_CHAR[$bitBuffer->read(6)];
93+
$result .= self::chr($bitBuffer->read(6));
12694
}
12795

12896
return $result;
12997
}
13098

99+
/**
100+
* @throws \chillerlan\QRCode\Data\QRCodeDataException
101+
*/
102+
private function ord(string $chr):int{
103+
$ord = strpos(self::CHAR_MAP, $chr);
104+
105+
if($ord === false){
106+
throw new QRCodeDataException('invalid character'); // @codeCoverageIgnore
107+
}
108+
109+
return $ord;
110+
}
111+
112+
/**
113+
* @throws \chillerlan\QRCode\Data\QRCodeDataException
114+
*/
115+
private static function chr(int $ord):string{
116+
117+
if($ord < 0 || $ord > 44){
118+
throw new QRCodeDataException('invalid character code'); // @codeCoverageIgnore
119+
}
120+
121+
return self::CHAR_MAP[$ord];
122+
}
123+
131124
}

‎src/Data/Number.php‎

Lines changed: 8 additions & 33 deletions
Original file line numberDiff line numberDiff line change
@@ -12,7 +12,7 @@
1212
namespace chillerlan\QRCode\Data;
1313

1414
use chillerlan\QRCode\Common\{BitBuffer, Mode};
15-
use function ceil, intdiv, str_split, substr, unpack;
15+
use function ceil, intdiv, preg_match, substr, unpack;
1616

1717
/**
1818
* Numeric mode: decimal digits 0 to 9
@@ -22,39 +22,14 @@
2222
*/
2323
final class Number extends QRDataModeAbstract{
2424

25-
/**
26-
* @var int[]
27-
*/
28-
private const NUMBER_TO_ORD = [
29-
'0' => 0, '1' => 1, '2' => 2, '3' => 3, '4' => 4, '5' => 5, '6' => 6, '7' => 7, '8' => 8, '9' => 9,
30-
];
31-
32-
/**
33-
* @var string[]
34-
*/
35-
private const ORD_TO_NUMBER = [
36-
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
37-
];
38-
3925
public const DATAMODE = Mode::NUMBER;
4026

4127
public function getLengthInBits():int{
4228
return (int)ceil($this->getCharCount() * (10 / 3));
4329
}
4430

4531
public static function validateString(string $string):bool{
46-
47-
if($string === ''){
48-
return false;
49-
}
50-
51-
foreach(str_split($string) as $chr){
52-
if(!isset(self::NUMBER_TO_ORD[$chr])){
53-
return false;
54-
}
55-
}
56-
57-
return true;
32+
return (bool)preg_match('/^\d+$/', $string);
5833
}
5934

6035
public function write(BitBuffer $bitBuffer, int $versionNumber):static{
@@ -131,9 +106,9 @@ public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):s
131106
throw new QRCodeDataException('error decoding numeric value');
132107
}
133108

134-
$result .= self::ORD_TO_NUMBER[intdiv($threeDigitsBits, 100)];
135-
$result .= self::ORD_TO_NUMBER[(intdiv($threeDigitsBits, 10) % 10)];
136-
$result .= self::ORD_TO_NUMBER[($threeDigitsBits % 10)];
109+
$result .= intdiv($threeDigitsBits, 100);
110+
$result .= (($threeDigitsBits / 10) % 10);
111+
$result .= ($threeDigitsBits % 10);
137112

138113
$length -= 3;
139114
}
@@ -150,8 +125,8 @@ public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):s
150125
throw new QRCodeDataException('error decoding numeric value');
151126
}
152127

153-
$result .= self::ORD_TO_NUMBER[intdiv($twoDigitsBits, 10)];
154-
$result .= self::ORD_TO_NUMBER[($twoDigitsBits % 10)];
128+
$result .= intdiv($twoDigitsBits, 10);
129+
$result .= ($twoDigitsBits % 10);
155130
}
156131
elseif($length === 1){
157132
// One digit left over to read
@@ -165,7 +140,7 @@ public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):s
165140
throw new QRCodeDataException('error decoding numeric value');
166141
}
167142

168-
$result .= self::ORD_TO_NUMBER[$digitBits];
143+
$result .= $digitBits;
169144
}
170145

171146
return $result;

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