Remove mbstring extension dependency

Author: endroid

src/Encoding/Encoding.php

@@ -6,11 +6,92 @@
 
 final class Encoding implements EncodingInterface
 {
+    private const ENCODINGS = [
+        'BASE64',
+        'UUENCODE',
+        'HTML-ENTITIES',
+        'Quoted-Printable',
+        '7bit',
+        '8bit',
+        'UCS-4',
+        'UCS-4BE',
+        'UCS-4LE',
+        'UCS-2',
+        'UCS-2BE',
+        'UCS-2LE',
+        'UTF-32',
+        'UTF-32BE',
+        'UTF-32LE',
+        'UTF-16',
+        'UTF-16BE',
+        'UTF-16LE',
+        'UTF-8',
+        'UTF-7',
+        'UTF7-IMAP',
+        'ASCII',
+        'EUC-JP',
+        'SJIS',
+        'eucJP-win',
+        'EUC-JP-2004',
+        'SJIS-Mobile#DOCOMO',
+        'SJIS-Mobile#KDDI',
+        'SJIS-Mobile#SOFTBANK',
+        'SJIS-mac',
+        'SJIS-2004',
+        'UTF-8-Mobile#DOCOMO',
+        'UTF-8-Mobile#KDDI-A',
+        'UTF-8-Mobile#KDDI-B',
+        'UTF-8-Mobile#SOFTBANK',
+        'CP932',
+        'SJIS-win',
+        'CP51932',
+        'JIS',
+        'ISO-2022-JP',
+        'ISO-2022-JP-MS',
+        'GB18030',
+        'Windows-1252',
+        'Windows-1254',
+        'ISO-8859-1',
+        'ISO-8859-2',
+        'ISO-8859-3',
+        'ISO-8859-4',
+        'ISO-8859-5',
+        'ISO-8859-6',
+        'ISO-8859-7',
+        'ISO-8859-8',
+        'ISO-8859-9',
+        'ISO-8859-10',
+        'ISO-8859-13',
+        'ISO-8859-14',
+        'ISO-8859-15',
+        'ISO-8859-16',
+        'EUC-CN',
+        'CP936',
+        'HZ',
+        'EUC-TW',
+        'BIG-5',
+        'CP950',
+        'EUC-KR',
+        'UHC',
+        'ISO-2022-KR',
+        'Windows-1251',
+        'CP866',
+        'KOI8-R',
+        'KOI8-U',
+        'ArmSCII-8',
+        'CP850',
+        'ISO-2022-JP-2004',
+        'ISO-2022-JP-MOBILE#KDDI',
+        'CP50220',
+        'CP50221',
+        'CP50222',
+    ];
+
     public function __construct(
         private readonly string $value
     ) {
-        if (!in_array($value, mb_list_encodings())) {
-            throw new \Exception(sprintf('Invalid encoding "%s"', $value));
+        if (!in_array($value, self::ENCODINGS)) {
+            throw new \Exception(sprintf('Invalid encoding "%s": choose one of '.implode(', ', self::ENCODINGS), $value));
         }
     }
 

src/Writer/SvgWriter.php

@@ -117,6 +117,7 @@ private function formatNumber(float $number): string
         $string = number_format($number, self::DECIMAL_PRECISION, '.', '');
         $string = rtrim($string, '0');
         $string = rtrim($string, '.');
+
         return $string;
     }
 }