Nomad changes

docs/snippets/php/plugins/plugin_extractor.md

@@ -0,0 +1,77 @@
+```php title="PHP"
+<?php declare(strict_types=1);
+
+use Kreuzberg\Kreuzberg;
+
+class CustomXmlExtractor implements DocumentExtractor {
+    public function name(): string {
+        return "custom-xml-extractor";
+    }
+
+    public function version(): string {
+        return "1.0.0";
+    }
+
+    public function initialize(): void {
+        // Initialize XML parser resources
+    }
+
+    public function shutdown(): void {
+        // Cleanup resources
+    }
+
+    public function extractBytes(string $content, string $mimeType, object $config): object {
+        try {
+            $xml = simplexml_load_string($content);
+            $text = $this->extractTextFromXml($xml);
+
+            return (object)[
+                'content' => $text,
+                'mime_type' => 'application/xml',
+                'metadata' => [
+                    'root_element' => $xml->getName(),
+                    'extraction_method' => 'custom-xml-extractor'
+                ],
+                'tables' => [],
+                'detected_languages' => null,
+                'chunks' => null,
+                'images' => null,
+            ];
+        } catch (Exception $e) {
+            throw new Exception("XML parsing failed: " . $e->getMessage());
+        }
+    }
+
+    public function supportedMimeTypes(): array {
+        return [
+            "application/xml",
+            "text/xml",
+            "application/xhtml+xml"
+        ];
+    }
+
+    public function priority(): int {
+        return 75;
+    }
+
+    private function extractTextFromXml($xml): string {
+        $text = "";
+
+        // Extract text from all elements
+        foreach ($xml->children() as $child) {
+            $childText = (string)$child;
+            if (!empty(trim($childText))) {
+                $text .= trim($childText) . "\n";
+            }
+        }
+
+        return $text ?: (string)$xml;
+    }
+}
+
+// Register the XML extractor
+$extractor = new CustomXmlExtractor();
+Kreuzberg::registerDocumentExtractor($extractor);
+
+echo "XML extractor registered\n";
+```