From c19530f1a590d758463f84523dd4c48c34d723e6 Mon Sep 17 00:00:00 2001
From: AUTOMATIC <16777216c@gmail.com>
Date: Tue, 14 Mar 2023 09:10:26 +0300
Subject: Add view metadata button for Lora cards.

---
 modules/sd_models.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'modules/sd_models.py')

diff --git a/modules/sd_models.py b/modules/sd_models.py
index 93959f55..5f57ec0c 100644
--- a/modules/sd_models.py
+++ b/modules/sd_models.py
@@ -210,6 +210,30 @@ def get_state_dict_from_checkpoint(pl_sd):
     return pl_sd
 
 
+def read_metadata_from_safetensors(filename):
+    import json
+
+    with open(filename, mode="rb") as file:
+        metadata_len = file.read(8)
+        metadata_len = int.from_bytes(metadata_len, "little")
+        json_start = file.read(2)
+
+        assert metadata_len > 2 and json_start in (b'{"', b"{'"), f"{filename} is not a safetensors file"
+        json_data = json_start + file.read(metadata_len-2)
+        json_obj = json.loads(json_data)
+
+        res = {}
+        for k, v in json_obj.get("__metadata__", {}).items():
+            res[k] = v
+            if isinstance(v, str) and v[0] == '{':
+                try:
+                    res[k] = json.loads(v)
+                except Exception as e:
+                    pass
+
+        return res
+
+
 def read_state_dict(checkpoint_file, print_global_state=False, map_location=None):
     _, extension = os.path.splitext(checkpoint_file)
     if extension.lower() == ".safetensors":
-- 
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