feat(assetbundle): 完成已验证结构的重建发布闭环

2026-09-18 12:45:17 +08:00 · 2026-09-10 00:46:48 +08:00
parent 68c6c91b1e
commit 69b6e36bf0
21 changed files with 1588 additions and 101 deletions
@@ -1088,6 +1088,34 @@ impl UnitySerializedFile {
        }
    }

+    /// Returns the raw payload bytes for one object table entry.
+    ///
+    /// The returned slice is still owned by the parsed serialized file. It is
+    /// useful to compare untouched objects across a variable-length rebuild.
+    pub fn object_bytes(&self, object: &UnitySerializedObject) -> Result<&[u8]> {
+        let object_start = self
+            .data_offset
+            .checked_add(usize::try_from(object.byte_start).map_err(|_| {
+                AssetBundleError::Parse(format!(
+                    "Unity object path_id {} byte_start does not fit usize",
+                    object.path_id
+                ))
+            })?)
+            .ok_or_else(|| AssetBundleError::Parse("Unity object offset overflow".to_string()))?;
+        let object_end = object_start
+            .checked_add(object.byte_size as usize)
+            .ok_or_else(|| AssetBundleError::Parse("Unity object size overflow".to_string()))?;
+        self.raw_data.get(object_start..object_end).ok_or_else(|| {
+            AssetBundleError::Parse(format!(
+                "Unity object path_id {} byte range {}..{} exceeds file size {}",
+                object.path_id,
+                object_start,
+                object_end,
+                self.raw_data.len()
+            ))
+        })
+    }
+
    fn rewrite_object_payload(
        &self,
        target_index: usize,