Add servername validator

CLIENT-164

Change-Id: If8fa77b51d50a0355ac3297aa0ef884908f05f8c
Reviewed-on: http://gerrit.dmdirc.com/1773
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

src/com/dmdirc/util/validators/ServerNameValidator.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2006-2011 Chris Smith, Shane Mc Cormack, Gregory Holmes
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.dmdirc.util.validators;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+
+/**
+ * Validates a server name, prepending an irc protocol if no protocol is
+ * specified.
+ */
+public class ServerNameValidator implements Validator<String> {
+
+    /** {@inheritDoc} */
+    @Override
+    public ValidationResponse validate(final String object) {
+        try {
+            URI uri = new URI(object);
+            if (uri.getHost() == null || uri.getHost().isEmpty()) {
+                uri = new URI("irc://" + object);
+            }
+            if (uri.getHost() == null || uri.getHost().isEmpty()) {
+                return new ValidationResponse("Address requires a hostname.");
+            } else {
+                return new ValidationResponse();
+            }
+        } catch (URISyntaxException ex) {
+            return new ValidationResponse(ex.getReason());
+        }
+    }
+}

test/com/dmdirc/util/validators/PermissiveValidatorTest.java

@@ -21,7 +21,6 @@
  */
 package com.dmdirc.util.validators;
 
-import com.dmdirc.util.validators.PermissiveValidator;
 import org.junit.Test;
 import static org.junit.Assert.*;