Initial commit

env/lib/python3.10/site-packages/wagtail/admin/icons.py

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+import hashlib
+import itertools
+import re
+from functools import lru_cache
+
+from django.conf import settings
+from django.template.loader import render_to_string
+from django.urls import reverse
+
+from wagtail import hooks
+
+icon_comment_pattern = re.compile(r"<!--.*?-->")
+
+
+@lru_cache(maxsize=None)
+def get_icons():
+    icon_hooks = hooks.get_hooks("register_icons")
+    all_icons = sorted(itertools.chain.from_iterable(hook([]) for hook in icon_hooks))
+    combined_icon_markup = ""
+    for icon in all_icons:
+        symbol = (
+            render_to_string(icon)
+            .replace('xmlns="http://www.w3.org/2000/svg"', "")
+            .replace("svg", "symbol")
+        )
+        symbol = icon_comment_pattern.sub("", symbol)
+        combined_icon_markup += symbol
+
+    return render_to_string(
+        "wagtailadmin/shared/icons.html", {"icons": combined_icon_markup}
+    )
+
+
+@lru_cache(maxsize=None)
+def get_icon_sprite_hash():
+    # SECRET_KEY is used to prevent exposing the Wagtail version
+    return hashlib.sha1(
+        (get_icons() + settings.SECRET_KEY).encode("utf-8")
+    ).hexdigest()[:8]
+
+
+def get_icon_sprite_url():
+    return reverse("wagtailadmin_sprite") + f"?h={get_icon_sprite_hash()}"