Add scripts

extract_layers.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+"""
+analyze Optional Content Groups (Layers) in PDFs recursively
+"""
+import fitz
+from pathlib import Path
+
+def analyze_ocg(pdf_path):
+    try:
+        doc = fitz.open(pdf_path)
+        ocgs = []
+
+        if doc.is_pdf and hasattr(doc, 'get_ocgs'):
+            ocg_list = doc.get_ocgs()
+            if ocg_list:
+                for ocg in ocg_list:
+                    ocgs.append({
+                        'name': ocg.get('name', 'Unknown'),
+                        'on': ocg.get('on', None),
+                        'intent': ocg.get('intent', []),
+                        'usage': ocg.get('usage', {})
+                    })
+
+        doc.close()
+
+        if ocgs:
+            return {
+                'file': str(pdf_path),
+                'ocg_count': len(ocgs),
+                'layers': ocgs
+            }
+        return None
+
+    except Exception as e:
+        return {
+            'file': str(pdf_path),
+            'error': str(e)
+        }
+
+def main():
+    pdf_files = Path('.').rglob('*.pdf')
+    found_count = 0
+
+    print(f"{'SCANNING FOR LAYERS':=^60}")
+
+    for pdf_file in pdf_files:
+        result = analyze_ocg(pdf_file)
+
+        if result:
+            found_count += 1
+            print(f"\nFile: {result['file']}")
+
+            if 'error' in result:
+                print(f"  [!] Error: {result['error']}")
+                print("-" * 60)
+                continue
+
+            print(f"  Layer Count: {result['ocg_count']}")
+            print("  Layers:")
+
+            for layer in result['layers']:
+                state = "ON " if layer['on'] else "OFF"
+                print(f"    [{state}] {layer['name']}")
+            print("-" * 60)
+
+    print(f"\nAnalysis complete. Found {found_count} PDFs with layers or errors.")
+
+if __name__ == '__main__':
+    main()