Issue jetty#11040 Register custom URI scheme in PathResource when necessary

Author: kohlschuetter

jetty-core/jetty-util/src/main/java/org/eclipse/jetty/util/resource/PathResource.java

@@ -40,11 +40,7 @@ public class PathResource extends Resource
 {
     private static final Logger LOG = LoggerFactory.getLogger(PathResource.class);
 
-    public static Index<String> SUPPORTED_SCHEMES = new Index.Builder<String>()
-        .caseSensitive(false)
-        .with("file")
-        .with("jrt")
-        .build();
+    public static Index<String> SUPPORTED_SCHEMES = initSupportedSchemes(null);
 
     // The path object represented by this instance
     private final Path path;
@@ -541,4 +537,18 @@ public String toString()
     {
         return this.uri.toASCIIString();
     }
+
+    static Index<String> initSupportedSchemes(String extraScheme)
+    {
+        Index.Builder<String> builder = new Index.Builder<String>()
+            .caseSensitive(false)
+            .with("file")
+            .with("jrt");
+        if (extraScheme != null)
+        {
+            builder = builder.with(extraScheme);
+        }
+
+        return builder.build();
+    }
 }

jetty-core/jetty-util/src/main/java/org/eclipse/jetty/util/resource/ResourceFactoryInternals.java

@@ -76,7 +76,9 @@ class ResourceFactoryInternals
                 resourceFactory = url.toString().contains("!/") ? mountedPathResourceFactory : pathResourceFactory;
             }
 
-            RESOURCE_FACTORIES.put(url.getProtocol(), resourceFactory);
+            String protocol = url.getProtocol();
+            PathResource.SUPPORTED_SCHEMES = PathResource.initSupportedSchemes(protocol);
+            RESOURCE_FACTORIES.put(protocol, resourceFactory);
         }
     }