Account for RemoteFile implementation when reporting file location on error.

As suggested in #38.

Author: gkellogg

bin/jsonld

@@ -63,7 +63,12 @@ def run(input, options)
     STDERR.puts "\nParsed #{num} statements in #{secs} seconds @ #{num/secs} statements/second." unless options[:quiet]
   end
 rescue
-  fname = input.respond_to?(:path) ? input.path : "-stdin-"
+  fname = case
+  when input.respond_to?(:path) then input.path
+  when input.respond_to?(:requested_url) && input.requested_url then input.requested_url
+  when input.respond_to?(:base_uri) then input.base_uri
+  else  "-stdin-"
+  end
   STDERR.puts("Error in #{fname}")
   raise
 end

example-files/mitar-in.jsonld

@@ -0,0 +1,13 @@
+{
+  "@context": {
+    "@vocab": "http://example/",
+    "B": {"@context": {"c": "http://example.org/c"}}
+  },
+  "a": {
+    "@context": {"@vocab": "http://example.com/"},
+    "@type": "B",
+    "a": "A in example.com",
+    "c": "C in example.org"
+  },
+  "c": "C in example"
+}