primo commit

libraries/vendor/algo26-matthias/idna-convert/src/ToIdn.php

@@ -0,0 +1,66 @@
+<?php
+namespace Algo26\IdnaConvert;
+
+use Algo26\IdnaConvert\Exception\InvalidCharacterException;
+use Algo26\IdnaConvert\Exception\InvalidIdnVersionException;
+use Algo26\IdnaConvert\Punycode\ToPunycode;
+use Algo26\IdnaConvert\TranscodeUnicode\TranscodeUnicode;
+
+class ToIdn extends AbstractIdnaConvert implements IdnaConvertInterface
+{
+    /** @var TranscodeUnicode */
+    private $unicodeTransCoder;
+
+    /** @var ToPunycode */
+    private $punycodeEncoder;
+
+    /**
+     * @throws InvalidIdnVersionException
+     */
+    public function __construct($idnVersion = null)
+    {
+        $this->unicodeTransCoder = new TranscodeUnicode();
+        $this->punycodeEncoder = new ToPunycode($idnVersion);
+    }
+
+    /**
+     * @param string $host
+     *
+     * @return string
+     * @throws InvalidCharacterException
+     * @throws Exception\AlreadyPunycodeException
+     */
+    public function convert(string $host): string
+    {
+        if (strlen($host) === 0) {
+            return $host;
+        }
+
+        if (strpos('/', $host) !== false
+            || strpos(':', $host) !== false
+            || strpos('?', $host) !== false
+            || strpos('@', $host) !== false
+        ) {
+            throw new InvalidCharacterException('Neither email addresses nor URLs are allowed', 205);
+        }
+
+        // These three punctuation characters are treated like the dot
+        $host = str_replace(['。', '．', '｡'], '.', $host);
+
+        // Operate per label
+        $hostLabels = explode('.', $host);
+        foreach ($hostLabels as $index => $label) {
+            $asUcs4Array = $this->unicodeTransCoder->convert(
+                $label,
+                $this->unicodeTransCoder::FORMAT_UTF8,
+                $this->unicodeTransCoder::FORMAT_UCS4_ARRAY
+            );
+            $encoded = $this->punycodeEncoder->convert($asUcs4Array);
+            if ($encoded) {
+                $hostLabels[$index] = $encoded;
+            }
+        }
+
+        return implode('.', $hostLabels);
+    }
+}