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 +1,59 @@
+# Copyright (c) 2024, Manfred Moitzi
+# License: MIT License
+from __future__ import annotations
+from typing import TYPE_CHECKING, Sequence
+from .entities import Body, load
+from .type_hints import EncodedData
+
+if TYPE_CHECKING:
+    from ezdxf.entities import DXFEntity
+
+__all__ = ["AcisCache"]
+NO_BODIES: Sequence[Body] = tuple()
+
+
+class AcisCache:
+    """This cache manages ACIS bodies created from SAT or SAB data stored in DXF 
+    entities.
+    
+    Each entry is a list of ACIS bodies and is indexed by a hash calculated from the 
+    source content of the SAT or SAB data.
+
+    """
+    def __init__(self) -> None:
+        self._entries: dict[int, Sequence[Body]] = {}
+        self.hits: int = 0
+        self.misses: int = 0
+
+    @staticmethod
+    def hash_data(data: EncodedData) -> int:
+        if isinstance(data, list):
+            return hash(tuple(data))
+        elif isinstance(data, bytearray):
+            return hash(bytes(data))
+        return hash(data)
+
+    def __len__(self) -> int:
+        return len(self._entries)
+
+    def get_bodies(self, data: EncodedData) -> Sequence[Body]:
+        if not data:
+            return NO_BODIES
+        
+        hash_value = AcisCache.hash_data(data)
+        bodies = self._entries.get(hash_value, NO_BODIES)
+        if bodies is not NO_BODIES:
+            self.hits += 1
+            return bodies
+        
+        self.misses += 1
+        bodies = tuple(load(data))
+        self._entries[hash_value] = bodies
+        return bodies
+    
+    def from_dxf_entity(self, entity: DXFEntity) ->  Sequence[Body]:
+        from ezdxf.entities import Body as DxfBody
+
+        if not isinstance(entity, DxfBody):
+            return NO_BODIES
+        return self.get_bodies(entity.acis_data)