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<?php
namespace Graze\CsvToken\Csv;
use InvalidArgumentException;
class Bom
{
/** UTF-8 BOM sequence */
const BOM_UTF8 = "\xEF\xBB\xBF";
/** UTF-16 BE BOM sequence */
const BOM_UTF16_BE = "\xFE\xFF";
/** UTF-16 LE BOM sequence */
const BOM_UTF16_LE = "\xFF\xFE";
/** UTF-32 BE BOM sequence */
const BOM_UTF32_BE = "\x00\x00\xFE\xFF";
/** UTF-32 LE BOM sequence */
const BOM_UTF32_LE = "\x00\x00\xFF\xFE";
/** @var string[] */
static protected $encodingMap = [
self::BOM_UTF8 => 'UTF-8',
self::BOM_UTF16_BE => 'UTF-16BE',
self::BOM_UTF16_LE => 'UTF-16LE',
self::BOM_UTF32_BE => 'UTF-32BE',
self::BOM_UTF32_LE => 'UTF-32LE',
];
/**
* @param string $bom
*
* @return string
*/
public static function getEncoding($bom)
if (array_key_exists($bom, static::$encodingMap)) {
return static::$encodingMap[$bom];
} else {
throw new InvalidArgumentException("Could not determine encoding from Byte Order Mark: " . $bom);
}
graze /
csv-token
