Override default uri format validator

Ref: everit-org/json-schema#455

src/main/java/org/entur/gbfs/validation/files/FileValidator.java

@@ -92,11 +92,16 @@ protected static Schema loadSchema(String version, String feedName) {
         try {
             InputStream inputStream = ClassLoader.getSystemClassLoader().getResourceAsStream("schema/v"+version+"/"+feedName+".json");
             JSONObject rawSchema = new JSONObject(new JSONTokener(inputStream));
-            return SchemaLoader.load(rawSchema);
+            SchemaLoader schemaLoader = SchemaLoader.builder()
+                    .enableOverrideOfBuiltInFormatValidators()
+                    .addFormatValidator(new URIFormatValidator())
+                    .schemaJson(rawSchema)
+                    .build();
+
+            return schemaLoader.load().build();
         } catch (Exception e) {
             System.out.println("Caught exception loading schema for " + feedName + " and version " + version);
             throw e;
         }
-
     }
 }

src/main/java/org/entur/gbfs/validation/files/URIFormatValidator.java

@@ -0,0 +1,27 @@
+package org.entur.gbfs.validation.files;
+
+import org.everit.json.schema.FormatValidator;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.Optional;
+
+public class URIFormatValidator implements FormatValidator {
+    @Override
+    public Optional<String> validate(String subject) {
+        try {
+            new URI(subject);
+            return Optional.empty();
+        } catch (URISyntaxException e) {
+            if (e.getReason().equalsIgnoreCase("expected authority")) {
+                return Optional.empty();
+            }
+        }
+        return Optional.of("Invalid URI");
+    }
+
+    @Override
+    public String formatName() {
+        return "uri";
+    }
+}