Improve drawing export and foundation quantity views

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

도면작성/dwg_export.py

@@ -56,6 +56,13 @@ def convert(source,output):
     original=ezdxf.readfile(source);audit=original.audit()
     if audit.errors:raise ValueError('Input DXF audit failed')
     doc=original
+    # R2000 has no MATERIAL objects. LibreDWG used to turn the default material
+    # dictionary into invalid ACDBPLACEHOLDER entries that its own reader repairs.
+    # Remove unsupported metadata before encoding, preserving indexed colours.
+    materials=[e for e in doc.objects if e.dxftype()=='MATERIAL']
+    material_dictionary=doc.rootdict.get('ACAD_MATERIAL')
+    unsupported_handles={e.dxf.handle for e in materials}
+    if material_dictionary:unsupported_handles.add(material_dictionary.dxf.handle)
     # The bundled writer's R2004 path drops entities. R2000 is used after a full round-trip check.
     # R2000 uses indexed colours; retain the intended greys with the nearest ACI colour.
     colour_count=0
@@ -69,6 +76,25 @@ def convert(source,output):
     expected={layout.name:Counter(fingerprint(e) for e in layout) for layout in doc.layouts}
     expected_blocks={block.name:Counter(fingerprint(e) for e in block) for block in doc.blocks if not block.name.startswith('*')}
     compatibility_angles(intermediate)
+    # Strip only converter-input metadata after ezdxf has finished serialization;
+    # ezdxf requires its default materials while saving even an R2000 document.
+    lines=intermediate.read_text(encoding='cp949').splitlines()
+    pairs=list(zip(lines[::2],lines[1::2]));groups=[];group=[]
+    for code,value in pairs:
+        if code.strip()=='0' and group:groups.append(group);group=[]
+        group.append((code,value))
+    if group:groups.append(group)
+    cleaned=[]
+    for group in groups:
+        handle=next((v for c,v in group if c.strip()=='5'),None)
+        if handle in unsupported_handles:continue
+        skip=False
+        for i,(code,value) in enumerate(group):
+            if skip:skip=False;continue
+            if code.strip()=='3' and value=='ACAD_MATERIAL':skip=True;continue
+            if code.strip()=='347':value='0'
+            cleaned.extend([code,value])
+    intermediate.write_text('\n'.join(cleaned)+'\n',encoding='cp949')
     logs=[]
     for args in [[str(TOOLS/'dxf2dwg.exe'),'--as','r2000','-o',str(output),str(intermediate)],
                  [str(TOOLS/'dwgread.exe'),'-O','DXF','-o',str(output.with_suffix('.roundtrip.dxf')),str(output)]]:
@@ -109,6 +135,7 @@ def convert(source,output):
                 object_fingerprints_match=True,source_links_match=True,dimension_measurements_match=True,max_dimension_error_mm=max_error,lineweights_match=True,dimstyles_match=True,paper_plot_settings_match=True,font_styles_match=True,audit_errors=len(audit.errors),
                 decoder_metadata_repairs=[str(e.message) for e in reader_audit.fixes],indexed_colour_conversions=colour_count,
                 native_autocad_open_tested=False)
+    report['unsupported_materials_removed']=len(materials)
     output.with_suffix('.validation.json').write_text(json.dumps(report,ensure_ascii=False,indent=2),encoding='utf-8')
     output.with_suffix('.conversion.log').write_text('\n'.join(logs),encoding='utf-8')
     return report