commit 29c139d5fe24f2101aa9921e95d6381417dbd45d
from: Omar Polo <op@omarpolo.com>
date: Fri Aug 13 08:46:51 2021 UTC

correctly serialize file: URIs

file URIs have the two slashes after the protocol even when the
hostname is not specified.

commit - 767da05cecb82ef3e8fe53a8bb977e4fd054a43b
commit + 29c139d5fe24f2101aa9921e95d6381417dbd45d
blob - c1fd7f956ce311a71f711189e6af8d8cee4fc297
blob + 6a58f46e28801ee0f98e8a8ed67576dc3f112b39
--- phos/phos_uri.c
+++ phos/phos_uri.c
@@ -893,7 +893,13 @@ phos_serialize_uri(const struct phos_uri *uri, char *b
 		CAT(":");
 	}
 
-	if (*uri->host != '\0') {
+	if (*uri->host != '\0' || strcmp(uri->scheme, "file") == 0) {
+		/*
+		 * The file URI scheme has a quirk that even if a
+		 * hostname is not present, we still have to append
+		 * the two slashes.  This is why we have
+		 * file:///etc/hosts and not file:/etc/hosts
+		 */
 		CAT("//");
 		CAT(uri->host);
 	}