chore: import upstream snapshot with attribution

python/mirage/core/gmail/read.py

@@ -0,0 +1,70 @@
+# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
+
+import json
+import posixpath
+
+from mirage.accessor.gmail import GmailAccessor
+from mirage.cache.index import IndexCacheStore
+from mirage.core.gmail.messages import get_attachment, get_message_processed
+from mirage.core.gmail.readdir import readdir
+from mirage.types import PathSpec
+from mirage.utils.errors import enoent
+from mirage.utils.key_prefix import mount_key, mount_prefix_of
+
+
+async def read(
+    accessor: GmailAccessor,
+    path: PathSpec,
+    index: IndexCacheStore = None,
+) -> bytes:
+    if isinstance(path, str):
+        path = PathSpec(virtual=path,
+                        directory=path,
+                        resource_path=path.strip("/"))
+    virtual = path.virtual
+    prefix = mount_prefix_of(path.virtual, path.resource_path)
+    key = path.resource_path
+    if index is None:
+        raise enoent(virtual)
+    virtual_key = prefix + "/" + key if prefix else "/" + key
+    result = await index.get(virtual_key)
+    if result.entry is None:
+        parent_key = posixpath.dirname(virtual_key) or "/"
+        if parent_key != virtual_key:
+            parent_path = PathSpec.from_str_path(parent_key,
+                                                 mount_key(parent_key, prefix))
+            try:
+                await readdir(accessor, parent_path, index)
+                result = await index.get(virtual_key)
+            except Exception:
+                pass
+        if result.entry is None:
+            raise enoent(virtual)
+    if result.entry.resource_type in ("gmail/label", "gmail/date",
+                                      "gmail/attachment_dir"):
+        raise IsADirectoryError(virtual)
+    if result.entry.resource_type == "gmail/attachment":
+        att_dir_key = posixpath.dirname(virtual_key)
+        att_dir_result = await index.get(att_dir_key)
+        if att_dir_result.entry is None:
+            raise enoent(virtual)
+        message_id = att_dir_result.entry.id
+        attachment_id = result.entry.id
+        return await get_attachment(accessor.token_manager, message_id,
+                                    attachment_id)
+    processed = await get_message_processed(accessor.token_manager,
+                                            result.entry.id)
+    return json.dumps(processed, ensure_ascii=False,
+                      separators=(",", ":")).encode()