|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* This file is part of graze/csv-token |
|
4
|
|
|
* |
|
5
|
|
|
* Copyright (c) 2016 Nature Delivered Ltd. <https://www.graze.com> |
|
6
|
|
|
* |
|
7
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
8
|
|
|
* file that was distributed with this source code. |
|
9
|
|
|
* |
|
10
|
|
|
* @license https://github.com/graze/csv-token/blob/master/LICENSE.md |
|
11
|
|
|
* @link https://github.com/graze/csv-token |
|
12
|
|
|
*/ |
|
13
|
|
|
|
|
14
|
|
|
namespace Graze\CsvToken\Csv; |
|
15
|
|
|
|
|
16
|
|
|
use InvalidArgumentException; |
|
17
|
|
|
|
|
18
|
|
|
class Bom |
|
19
|
|
|
{ |
|
20
|
|
|
/** UTF-8 BOM sequence */ |
|
21
|
|
|
const BOM_UTF8 = "\xEF\xBB\xBF"; |
|
22
|
|
|
/** UTF-16 BE BOM sequence */ |
|
23
|
|
|
const BOM_UTF16_BE = "\xFE\xFF"; |
|
24
|
|
|
/** UTF-16 LE BOM sequence */ |
|
25
|
|
|
const BOM_UTF16_LE = "\xFF\xFE"; |
|
26
|
|
|
/** UTF-32 BE BOM sequence */ |
|
27
|
|
|
const BOM_UTF32_BE = "\x00\x00\xFE\xFF"; |
|
28
|
|
|
/** UTF-32 LE BOM sequence */ |
|
29
|
|
|
const BOM_UTF32_LE = "\x00\x00\xFF\xFE"; |
|
30
|
|
|
|
|
31
|
|
|
/** @var string[] */ |
|
32
|
|
|
static protected $encodingMap = [ |
|
33
|
|
|
self::BOM_UTF8 => 'UTF-8', |
|
34
|
|
|
self::BOM_UTF16_BE => 'UTF-16BE', |
|
35
|
|
|
self::BOM_UTF16_LE => 'UTF-16LE', |
|
36
|
|
|
self::BOM_UTF32_BE => 'UTF-32BE', |
|
37
|
|
|
self::BOM_UTF32_LE => 'UTF-32LE', |
|
38
|
|
|
]; |
|
39
|
|
|
|
|
40
|
|
|
/** |
|
41
|
|
|
* @param string $bom |
|
42
|
|
|
* |
|
43
|
|
|
* @return string |
|
44
|
|
|
*/ |
|
45
|
9 |
|
public static function getEncoding($bom) |
|
46
|
|
|
{ |
|
47
|
9 |
|
if (array_key_exists($bom, static::$encodingMap)) { |
|
48
|
8 |
|
return static::$encodingMap[$bom]; |
|
49
|
|
|
} else { |
|
50
|
1 |
|
throw new InvalidArgumentException("Could not determine encoding from Byte Order Mark: " . $bom); |
|
51
|
|
|
} |
|
52
|
|
|
} |
|
53
|
|
|
} |
|
54
|
|
|
|
graze /
csv-token
