From 6fb95f72b091248abf798d1aea237bc591114030 Mon Sep 17 00:00:00 2001
From: Matthias Bernt <m.bernt@ufz.de>
Date: Tue, 29 Oct 2024 12:38:10 +0100
Subject: [PATCH] replace imghdr by puremagic

imghdr allowed to detect a few imagetimes and has been deprecated
in python 3.13: https://docs.python.org/3.12/library/imghdr.html

from the release notes:

> The filetype, puremagic, or python-magic libraries should be used as replacements.
> For example, the puremagic.what() function can be used to replace the imghdr.what()
> function for all file formats that were supported by imghdr.

See also https://github.com/cdgriffith/puremagic/blob/763349ec4d02ba930fb1142c6eb684afdf06c6ab/puremagic/main.py#L421
---
 lib/galaxy/dependencies/pinned-requirements.txt | 1 +
 lib/galaxy/util/image_util.py                   | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/galaxy/dependencies/pinned-requirements.txt b/lib/galaxy/dependencies/pinned-requirements.txt
index 91752afea326..325ecb44595f 100644
--- a/lib/galaxy/dependencies/pinned-requirements.txt
+++ b/lib/galaxy/dependencies/pinned-requirements.txt
@@ -133,6 +133,7 @@ propcache==0.2.0 ; python_version >= "3.8" and python_version < "3.13"
 prov==1.5.1 ; python_version >= "3.8" and python_version < "3.13"
 psutil==6.1.0 ; python_version >= "3.8" and python_version < "3.13"
 pulsar-galaxy-lib==0.15.6 ; python_version >= "3.8" and python_version < "3.13"
+puremagic==1.28 ; python_version >= "3.8" and python_version < "3.13"
 pycparser==2.22 ; python_version >= "3.8" and python_version < "3.13"
 pycryptodome==3.21.0 ; python_version >= "3.8" and python_version < "3.13"
 pydantic-core==2.23.4 ; python_version >= "3.8" and python_version < "3.13"
diff --git a/lib/galaxy/util/image_util.py b/lib/galaxy/util/image_util.py
index 3b11a50d2fda..7d867525dfb8 100644
--- a/lib/galaxy/util/image_util.py
+++ b/lib/galaxy/util/image_util.py
@@ -1,12 +1,13 @@
 """Provides utilities for working with image files."""
 
-import imghdr
 import logging
 from typing import (
     List,
     Optional,
 )
 
+import puremagic
+
 try:
     from PIL import Image
 except ImportError:
@@ -26,7 +27,7 @@ def image_type(filename: str) -> Optional[str]:
             # exception we expect to happen frequently, so we're not logging
             pass
     if not fmt:
-        fmt = imghdr.what(filename)
+        fmt = puremagic.what(filename)
     if fmt:
         return fmt.upper()
     else: