| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.wicket.request; |
| |
| import org.apache.wicket.util.string.Strings; |
| |
| /** |
| * Various url utilities |
| * |
| * @author igor.vaynberg |
| */ |
| public class UrlUtils |
| { |
| /** |
| * Constructor |
| */ |
| // TODO make it private in Wicket 7.0 |
| protected UrlUtils() |
| { |
| |
| } |
| |
| /** |
| * Checks if the url is relative or absolute |
| * |
| * @param url |
| * @return <code>true</code> if url is relative, <code>false</code> otherwise |
| */ |
| public static boolean isRelative(final String url) |
| { |
| // the regex means "doesn't start with 'scheme://'" |
| if ((url != null) && (url.startsWith("/") == false) && (!url.matches("^\\w+\\:\\/\\/.*")) && |
| !(url.startsWith("#"))) |
| { |
| return true; |
| } |
| else |
| { |
| return false; |
| } |
| } |
| |
| /** |
| * Rewrites a relative url to be context relative, leaves absolute urls same. |
| * |
| * @param url |
| * @param requestCycle |
| * @return rewritten url |
| */ |
| public static String rewriteToContextRelative(String url, IRequestCycle requestCycle) |
| { |
| if (isRelative(url)) |
| { |
| return requestCycle.getUrlRenderer().renderContextRelativeUrl(url); |
| } |
| else |
| { |
| return url; |
| } |
| } |
| |
| /** |
| * Makes sure the path starts with a slash and does not end with a slash. Empty or null paths |
| * are normalized into an empty string. |
| * |
| * @param path |
| * path to normalize |
| * @return normalized path |
| */ |
| public static String normalizePath(String path) |
| { |
| if (Strings.isEmpty(path)) |
| { |
| return ""; |
| } |
| path = path.trim(); |
| if (!path.startsWith("/")) |
| { |
| path = "/" + path; |
| } |
| if (path.endsWith("/")) |
| { |
| path = path.substring(0, path.length() - 1); |
| } |
| return path; |
| } |
| } |