re PR libgcj/4383 (file: protocol not supported in URLConnection?)

PR libgcj/4383

	* gnu/gcj/protocol/file/Connection.java (connect): Throw
	FileNotFoundException if appropriate.
	* gnu/gcj/protocol/file/Handler.java (openConnection): Throw an
	IOException if we got a file: url with a hostname. Comment out protocol
	switch to ftp for now.
	* java/net/URL.java (URL): Include protocol name in exception
	message
	when handler can't be found.

From-SVN: r45898

libjava/gnu/gcj/protocol/file/Connection.java

@@ -48,7 +48,11 @@ class Connection extends URLConnection
 
     // If not connected, then file needs to be openned.
     fileIn = new File(url.getFile());
-    connected = true;
+    
+    if (fileIn.exists())
+      connected = true;
+    else
+      throw new FileNotFoundException("No such file or directory");
   }
 
   public InputStream getInputStream() throws IOException

libjava/gnu/gcj/protocol/file/Handler.java

@@ -35,6 +35,8 @@ public class Handler extends URLStreamHandler
     String host = url.getHost();
     if ((host != null) && (! host.equals("")))
       {
+        throw new IOException("ftp protocol handler not yet implemented.");
+        /*
 	// Reset the protocol (and implicitly the handler) for this URL.
 	// Then have the URL attempt the connection again, as it will
 	// get the changed handler the next time around.
@@ -43,6 +45,7 @@ public class Handler extends URLStreamHandler
 	// Until the ftp protocol handler is written, this will cause
 	// a NullPointerException.
 	return url.openConnection();
+	*/
       }
 
     return new Connection(url);