001package ball.tools.javadoc;
002/*-
003 * ##########################################################################
004 * Utilities
005 * $Id: LinkURITaglet.html 5431 2020-02-12 19:03:17Z ball $
006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/hcf-dev/blog/2019-03-30-java-interface-facades/src/main/resources/javadoc/src-html/ball/tools/javadoc/LinkURITaglet.html $
007 * %%
008 * Copyright (C) 2008 - 2020 Allen D. Ball
009 * %%
010 * Licensed under the Apache License, Version 2.0 (the "License");
011 * you may not use this file except in compliance with the License.
012 * You may obtain a copy of the License at
013 *
014 *      http://www.apache.org/licenses/LICENSE-2.0
015 *
016 * Unless required by applicable law or agreed to in writing, software
017 * distributed under the License is distributed on an "AS IS" BASIS,
018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
019 * See the License for the specific language governing permissions and
020 * limitations under the License.
021 * ##########################################################################
022 */
023import ball.annotation.ServiceProviderFor;
024import ball.xml.FluentNode;
025import com.sun.javadoc.Tag;
026import com.sun.tools.doclets.Taglet;
027import java.net.URI;
028import java.util.LinkedHashMap;
029import java.util.Map;
030import lombok.NoArgsConstructor;
031import lombok.ToString;
032
033/**
034 * Inline {@link Taglet} to provide external links.
035 *
036 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball}
037 * @version $Revision: 5431 $
038 */
039@ServiceProviderFor({ Taglet.class })
040@TagletName("link.uri")
041@NoArgsConstructor @ToString
042public class LinkURITaglet extends AbstractInlineTaglet
043                           implements SunToolsInternalToolkitTaglet {
044    private static final LinkURITaglet INSTANCE = new LinkURITaglet();
045
046    public static void register(Map<Object,Object> map) {
047        register(map, INSTANCE);
048    }
049
050    private static final String SPACES = "[\\p{Space}]+";
051
052    @Override
053    public FluentNode toNode(Tag tag) throws Throwable {
054        String text = tag.text().trim();
055        String[] argv = text.split(SPACES, 2);
056        URI href = new URI(argv[0]);
057
058        text = (argv.length > 1) ? argv[1] : null;
059
060        LinkedHashMap<String,String> map = new LinkedHashMap<>();
061
062        if (text != null) {
063            for (;;) {
064                argv = text.split(SPACES, 2);
065
066                String[] nvp = argv[0].split("=", 2);
067
068                if (argv.length > 1 && nvp.length > 1) {
069                    map.put(nvp[0], nvp[1]);
070                    text = argv[1];
071                } else {
072                    break;
073                }
074            }
075        }
076
077        return a(href, text)
078                   .add(map.entrySet()
079                        .stream()
080                        .map(t -> attr(t.getKey(), t.getValue())));
081    }
082}