Attempt to add rdflib 5.0.0

Author: Panaetius

requirements.txt

@@ -1,6 +1,6 @@
 ruamel.yaml>=0.12.4, <= 0.16.5
-rdflib==4.2.2
-rdflib-jsonld==0.4.0
+rdflib>=4.2.2, <= 5.0.0
+rdflib-jsonld>=0.4.0, <0.6.0
 mistune>=0.8.1,<0.9
 CacheControl==0.11.7
 lockfile==0.12.2

schema_salad/jsonld_context.py

@@ -148,7 +148,30 @@ def process_type(
                 v = v["_@id"] if v.get("_@id", "@")[0] != "@" else None
 
             if bool(v):
-                (ns, ln) = rdflib.namespace.split_uri(str(v))
+                try:
+                    (ns, ln) = rdflib.namespace.split_uri(str(v))
+                except ValueError:
+                    # rdflib 5.0.0 compatibility
+                    uri = str(v)
+                    colon_index = str(v).rfind(":")
+
+                    if colon_index < 0:
+                        raise
+                    split_start = rdflib.namespace.SPLIT_START_CATEGORIES
+                    for j in range(-1 - colon_index, len(uri)):
+                        if (
+                            rdflib.namespace.category(uri[j]) in split_start
+                            or uri[j] == "_"
+                        ):
+                            # _ prevents early split, roundtrip not generate
+                            ns = uri[:j]
+                            if not ns:
+                                break
+                            ln = uri[j:]
+                            break
+                    if not ns or not ln:
+                        raise
+
                 if ns[0:-1] in namespaces:
                     propnode = namespaces[ns[0:-1]][ln]
                 else:

setup.py

@@ -84,7 +84,7 @@
     "ruamel.yaml >= 0.12.4, <= 0.16.5",
     # once the minimum version for ruamel.yaml >= 0.15.99
     # then please update the mypy targets in the Makefile
-    "rdflib >= 4.2.2, < 4.3.0",
+    "rdflib >= 4.2.2, <= 5.0.0",
     "rdflib-jsonld >= 0.3.0, < 0.6.0",
     "mistune >= 0.8.1, < 0.9",
     "CacheControl >= 0.11.7, < 0.12",