Backported ASCII detection for DataPath validation

CHANGELOG.md

@@ -2,6 +2,24 @@
 
 All Notable changes to `League\Uri\Components` will be documented in this file
 
+## 2.2.1 - 2020-02-09
+
+### Added 
+
+- None
+
+### Fixed
+
+- back port improvement made to `DataUri` by [#154](https://github.com/thephpleague/uri/issues/154) thanks to [Nicolas Grekas](https://github.com/nicolas-grekas)
+
+### Deprecated
+
+- None
+
+### Remove
+
+- None
+
 ## 2.2.0 - 2020-02-08
 
 ### Added 

src/Components/DataPath.php

@@ -59,6 +59,14 @@ final class DataPath extends Component implements DataPathInterface
 
     private const REGEXP_DATAPATH = '/^\w+\/[-.\w]+(?:\+[-.\w]+)?;,$/';
 
+
+    /**
+     * All ASCII letters sorted by typical frequency of occurrence.
+     *
+     * @var string
+     */
+    private const ASCII = "\x20\x65\x69\x61\x73\x6E\x74\x72\x6F\x6C\x75\x64\x5D\x5B\x63\x6D\x70\x27\x0A\x67\x7C\x68\x76\x2E\x66\x62\x2C\x3A\x3D\x2D\x71\x31\x30\x43\x32\x2A\x79\x78\x29\x28\x4C\x39\x41\x53\x2F\x50\x22\x45\x6A\x4D\x49\x6B\x33\x3E\x35\x54\x3C\x44\x34\x7D\x42\x7B\x38\x46\x77\x52\x36\x37\x55\x47\x4E\x3B\x4A\x7A\x56\x23\x48\x4F\x57\x5F\x26\x21\x4B\x3F\x58\x51\x25\x59\x5C\x09\x5A\x2B\x7E\x5E\x24\x40\x60\x7F\x00\x01\x02\x03\x04\x05\x06\x07\x08\x0B\x0C\x0D\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F";
+
     /**
      * @var Path
      */
@@ -132,7 +140,7 @@ private function filterPath(?string $path): string
             $path = substr($path, 0, -1).'charset=us-ascii,';
         }
 
-        if (1 === preg_match(self::REGEXP_NON_ASCII_PATTERN, $path) && false === strpos($path, ',')) {
+        if (strlen($path) !== strspn($path, self::ASCII) || false === strpos($path, ',')) {
             throw new SyntaxError(sprintf('The path `%s` is invalid according to RFC2937.', $path));
         }