refactor: excel parse

2026-04-16 10:01:11 +08:00
parent 680ecc320f
commit f62f95ec02
7941 changed files with 2899112 additions and 0 deletions
@@ -0,0 +1,71 @@
+# Copyright (c) 2019-2022 Manfred Moitzi
+# License: MIT License
+from __future__ import annotations
+from typing import TYPE_CHECKING, Optional
+from ezdxf.lldxf.attributes import DXFAttr, DXFAttributes, DefSubclass
+from ezdxf.lldxf import const
+from .dxfentity import SubclassProcessor, DXFEntity
+from .factory import register_entity
+
+if TYPE_CHECKING:
+    from ezdxf.entities import DXFNamespace
+    from ezdxf.lldxf.tagwriter import AbstractTagWriter
+
+__all__ = ["TableHead"]
+
+base_class = DefSubclass(
+    None,
+    {
+        "name": DXFAttr(2),
+        "handle": DXFAttr(5),
+        "owner": DXFAttr(330),
+    },
+)
+
+acdb_symbol_table = DefSubclass(
+    "AcDbSymbolTable",
+    {
+        "count": DXFAttr(70, default=0),
+    },
+)
+
+
+@register_entity
+class TableHead(DXFEntity):
+    """The table head structure is only maintained for export and not for
+    internal usage, ezdxf ignores an inconsistent table head at runtime.
+
+    """
+
+    DXFTYPE = "TABLE"
+    DXFATTRIBS = DXFAttributes(base_class, acdb_symbol_table)
+
+    def load_dxf_attribs(
+        self, processor: Optional[SubclassProcessor] = None
+    ) -> DXFNamespace:
+        dxf = super().load_dxf_attribs(processor)
+        if processor:
+            dxf.name = processor.base_class.get_first_value(2)
+            # Stored max table count is not required:
+            dxf.count = 0
+        return dxf
+
+    def export_dxf(self, tagwriter: AbstractTagWriter) -> None:
+        assert self.dxf.handle, (
+            "TABLE needs a handle, maybe loaded from DXF R12 without handle!"
+        )
+        tagwriter.write_tag2(const.STRUCTURE_MARKER, self.DXFTYPE)
+        tagwriter.write_tag2(2, self.dxf.name)
+        if tagwriter.dxfversion >= const.DXF2000:
+            tagwriter.write_tag2(5, self.dxf.handle)
+            if self.has_extension_dict:
+                self.extension_dict.export_dxf(tagwriter)  # type: ignore
+            tagwriter.write_tag2(const.OWNER_CODE, self.dxf.owner)
+            tagwriter.write_tag2(const.SUBCLASS_MARKER, acdb_symbol_table.name)
+            tagwriter.write_tag2(70, self.dxf.count)
+            # There is always one exception:
+            if self.dxf.name == "DIMSTYLE":
+                tagwriter.write_tag2(const.SUBCLASS_MARKER, "AcDbDimStyleTable")
+        else:  # DXF R12
+            # TABLE does not need a handle at all
+            tagwriter.write_tag2(70, self.dxf.count)