From 495e955378d62dc439c4c210785e5d401bc77f64 Mon Sep 17 00:00:00 2001
From: Andrew Godwin
Date: Wed, 16 Nov 2022 06:53:39 -0700
Subject: Tag and visibility handling

---
 core/ld.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'core/ld.py')

diff --git a/core/ld.py b/core/ld.py
index 346708c..6692dab 100644
--- a/core/ld.py
+++ b/core/ld.py
@@ -414,6 +414,18 @@ def canonicalise(json_data: Dict, include_security: bool = False) -> Dict:
     return jsonld.compact(jsonld.expand(json_data), context)
 
 
+def get_list(container, key) -> List:
+    """
+    Given a JSON-LD value (that can be either a list, or a dict if it's just
+    one item), always returns a list"""
+    if key not in container:
+        return []
+    value = container[key]
+    if not isinstance(value, list):
+        return [value]
+    return value
+
+
 def format_ld_date(value: datetime.datetime) -> str:
     return value.strftime(DATETIME_FORMAT)
 
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