اضافه شدن قابلیت مقایسه شماتیک

backend/app/parser/schdoc_parser.py

@@ -11,7 +11,7 @@ from .primitives import decode, KINDS, SUPPORTED
 
 ELECTRICAL=['Input','Bidirectional','Output','Open collector','Passive','Tri-state','Open emitter','Power']
 
-def parse_schdoc(data: bytes, filename: str, document_id: str) -> Document:
+def parse_schdoc(data: bytes, filename: str, document_id: str, *, allow_empty=False) -> Document:
     fmt,streams,main,extra=read_document(data)
     if not main or 'HEADER' not in main[0].properties:
         raise ParseError('Missing schematic version header')
@@ -144,7 +144,7 @@ def parse_schdoc(data: bytes, filename: str, document_id: str) -> Document:
             objects.append(SchematicObject(id=r.id,kind='malformed',record_type=-1,source_stream=r.stream,source_index=r.index,
                 visible=False,position=Point(x=0,y=0),bounds=bounds([]),properties=p))
     if len(primitives)>250000: raise ParseError('Drawable count limit exceeded')
-    if not primitives: raise ParseError('No supported visible geometry found in this schematic')
+    if not primitives and not allow_empty: raise ParseError('No supported visible geometry found in this schematic')
     by_component={}
     for shape in primitives:
         if shape.component_id: by_component.setdefault(shape.component_id,[]).append(shape.bounds)