| /* |
| * 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.netbeans.modules.html.knockout; |
| |
| import java.io.IOException; |
| import java.net.MalformedURLException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.net.URL; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import org.netbeans.modules.html.editor.lib.api.HelpResolver; |
| import org.openide.util.Exceptions; |
| |
| /** |
| * |
| * @author marekfukala |
| */ |
| public class KOHelpResolver implements HelpResolver { |
| |
| private static final Logger LOGGER = Logger.getLogger(KOHelpResolver.class.getSimpleName()); |
| |
| private static KOHelpResolver INSTANCE; |
| |
| public static synchronized KOHelpResolver getDefault() { |
| if(INSTANCE == null) { |
| INSTANCE = new KOHelpResolver(); |
| } |
| return INSTANCE; |
| } |
| |
| @Override |
| public URL resolveLink(URL baseURL, String relativeLink) { |
| LOGGER.log(Level.FINE, "relativeLink = ''{0}''", relativeLink); //NOI18N |
| LOGGER.log(Level.FINE, "baseURL = ''{0}''", baseURL); //NOI18N |
| |
| try { |
| //test if the relative link isn't an absolute link (http://site.org/file) |
| URI u = new URI(relativeLink); |
| if (u.isAbsolute()) { |
| LOGGER.log(Level.FINE, "resolved to = ''{0}''", u.toURL()); //NOI18N |
| return u.toURL(); |
| } |
| } catch (MalformedURLException | URISyntaxException ex) { |
| LOGGER.log(Level.FINE, null, ex); //basically ignore the exception |
| } |
| |
| |
| String link = null; |
| |
| if (relativeLink.startsWith("#")) { |
| assert baseURL != null : "Base URL must be provided for local relative links (anchors)."; //NOI18N |
| String base = baseURL.toExternalForm(); |
| //link within the same file |
| int hashIdx = base.indexOf('#'); |
| if (hashIdx != -1) { |
| base = base.substring(0, hashIdx); |
| } |
| link = base + relativeLink; |
| } else { |
| //link contains a filename |
| if (baseURL != null) { |
| URL url = getRelativeURL(baseURL, relativeLink); |
| LOGGER.log(Level.FINE, "resolved to = ''{0}''", url); //NOI18N |
| return url; |
| } |
| } |
| if (link != null) { |
| try { |
| URL url = new URI(link).toURL(); |
| LOGGER.log(Level.FINE, "resolved to = ''{0}''", url); //NOI18N |
| return url; |
| } catch (URISyntaxException | MalformedURLException ex) { |
| LOGGER.log(Level.FINE, null, ex); //basically ignore the exception |
| } |
| } |
| |
| LOGGER.fine("cannot be resolved!"); //NOI18N |
| return null; |
| } |
| |
| private URL getRelativeURL(URL baseurl, String link) { |
| if (link.trim().isEmpty()) { |
| return null; |
| } |
| |
| if (link.startsWith("./")) { |
| link = link.substring(2); |
| } |
| String url = baseurl.toString(); |
| int index; |
| if (link.trim().charAt(0) == '#') { |
| index = url.indexOf('#'); |
| if (index > -1) { |
| url = url.substring(0, url.indexOf('#')); |
| } |
| url = url + link; |
| } else { |
| index = 0; |
| url = url.substring(0, url.lastIndexOf('/')); |
| while ((index = link.indexOf("../", index)) > -1) { //NOI18N |
| url = url.substring(0, url.lastIndexOf('/')); |
| link = link.substring(index + 3); |
| } |
| url = url + "/" + link; // NOI18N |
| } |
| try { |
| return new URL(url); |
| } catch (java.net.MalformedURLException e) { |
| LOGGER.log(Level.FINE, null, e); //basically ignore the exception |
| } |
| return null; |
| } |
| |
| @Override |
| public String getHelpContent(URL url) { |
| try { |
| return KOUtils.getContentAsString(url, null); |
| } catch (IOException ex) { |
| Exceptions.printStackTrace(ex); |
| return null; |
| } |
| } |
| } |