1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
namespace UCD\Unicode\TransformationFormat; |
4
|
|
|
|
5
|
|
|
use UCD\Exception\InvalidArgumentException; |
6
|
|
|
use UCD\Unicode\TransformationFormat; |
7
|
|
|
|
8
|
|
|
class StringUtility |
9
|
|
|
{ |
10
|
|
|
/** |
11
|
|
|
* @var array |
12
|
|
|
*/ |
13
|
|
|
private static $iconvMap = [ |
14
|
|
|
TransformationFormat::EIGHT => 'UTF-8', |
15
|
|
|
TransformationFormat::SIXTEEN => 'UTF-16', |
16
|
|
|
TransformationFormat::SIXTEEN_BIG_ENDIAN => 'UTF-16BE', |
17
|
|
|
TransformationFormat::SIXTEEN_LITTLE_ENDIAN => 'UTF-16LE', |
18
|
|
|
TransformationFormat::THIRTY_TWO => 'UTF-32', |
19
|
|
|
TransformationFormat::THIRTY_TWO_BIG_ENDIAN => 'UTF-32BE', |
20
|
|
|
TransformationFormat::THIRTY_TWO_LITTLE_ENDIAN => 'UTF-32LE' |
21
|
|
|
]; |
22
|
|
|
|
23
|
|
|
/** |
24
|
|
|
* @param string $string |
25
|
|
|
* @param TransformationFormat $from |
26
|
|
|
* @param TransformationFormat $to |
27
|
|
|
* @return string |
28
|
|
|
*/ |
29
|
|
|
public static function convertString($string, TransformationFormat $from, TransformationFormat $to) |
30
|
|
|
{ |
31
|
|
|
$in = self::mapFormat($from); |
32
|
|
|
$out = self::mapFormat($to); |
33
|
|
|
|
34
|
|
|
return iconv($in, $out, $string); |
35
|
|
|
} |
36
|
|
|
|
37
|
|
|
/** |
38
|
|
|
* @param string $character |
39
|
|
|
* @param TransformationFormat $from |
40
|
|
|
* @param TransformationFormat $to |
41
|
|
|
* @throws InvalidArgumentException |
42
|
|
|
* @return string |
43
|
|
|
*/ |
44
|
|
|
public static function convertCharacter($character, TransformationFormat $from, TransformationFormat $to) |
45
|
|
|
{ |
46
|
|
|
$in = self::mapFormat($from); |
47
|
|
|
|
48
|
|
|
if (iconv_strlen($character, $in) !== 1) { |
49
|
|
|
throw new InvalidArgumentException('Single character must be provided'); |
50
|
|
|
} |
51
|
|
|
|
52
|
|
|
return self::convertString($character, $from, $to); |
53
|
|
|
} |
54
|
|
|
|
55
|
|
|
/** |
56
|
|
|
* @param TransformationFormat $format |
57
|
|
|
* @return string |
58
|
|
|
* @throws InvalidArgumentException |
59
|
|
|
*/ |
60
|
|
|
private static function mapFormat(TransformationFormat $format) |
61
|
|
|
{ |
62
|
|
|
if (!array_key_exists($format->getType(), self::$iconvMap)) { |
63
|
|
|
throw new InvalidArgumentException(); |
64
|
|
|
} |
65
|
|
|
|
66
|
|
|
return self::$iconvMap[$format->getType()]; |
67
|
|
|
} |
68
|
|
|
|
69
|
|
|
/** |
70
|
|
|
* @param string $string |
71
|
|
|
* @param TransformationFormat $format |
72
|
|
|
* @return string[] |
73
|
|
|
* @throws InvalidArgumentException |
74
|
|
|
*/ |
75
|
|
|
public static function split($string, TransformationFormat $format) |
76
|
|
|
{ |
77
|
|
|
$encoding = self::mapFormat($format); |
78
|
|
|
$characters = []; |
79
|
|
|
|
80
|
|
|
for ($i = 0; $i < iconv_strlen($string, $encoding); $i++) { |
81
|
|
|
$character = iconv_substr($string, $i, 1, $encoding); |
82
|
|
|
array_push($characters, $character); |
83
|
|
|
} |
84
|
|
|
|
85
|
|
|
return $characters; |
86
|
|
|
} |
87
|
|
|
} |