Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: src/share/classes/com/sun/tools/doclets/internal/toolkit/util/DocLink.java
src/share/classes/com/sun/tools/doclets/internal/toolkit/util/DocLink.java
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| 1 /* | |
| 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. Oracle designates this | |
| 8 * particular file as subject to the "Classpath" exception as provided | |
| 9 * by Oracle in the LICENSE file that accompanied this code. | |
| 10 * | |
| 11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 * accompanied this code). | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License version | |
| 18 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 * | |
| 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 * or visit www.oracle.com if you need additional information or have any | |
| 23 * questions. | |
| 24 */ | |
| 25 | |
| 26 package com.sun.tools.doclets.internal.toolkit.util; | |
| 27 | |
| 28 /** | |
| 29 * Abstraction for simple relative URIs, consisting of a path, | |
| 30 * an optional query, and an optional fragment. DocLink objects can | |
| 31 * be created by the constructors below or from a DocPath using the | |
| 32 * convenience methods, {@link DocPath#fragment fragment} and | |
| 33 * {@link DocPath#query query}. | |
| 34 * | |
| 35 * <p><b>This is NOT part of any supported API. | |
| 36 * If you write code that depends on this, you do so at your own risk. | |
| 37 * This code and its internal interfaces are subject to change or | |
| 38 * deletion without notice.</b> | |
| 39 * | |
| 40 */ | |
| 41 public class DocLink { | |
| 42 final String path; | |
| 43 final String query; | |
| 44 final String fragment; | |
| 45 | |
| 46 /** Create a DocLink representing the URI {@code #fragment}. */ | |
| 47 public static DocLink fragment(String fragment) { | |
| 48 return new DocLink((String) null, (String) null, fragment); | |
| 49 } | |
| 50 | |
| 51 /** Create a DocLink representing the URI {@code path}. */ | |
| 52 public DocLink(DocPath path) { | |
| 53 this(path.getPath(), null, null); | |
| 54 } | |
| 55 | |
| 56 /** | |
| 57 * Create a DocLink representing the URI {@code path?query#fragment}. | |
| 58 * query and fragment may be null. | |
| 59 */ | |
| 60 public DocLink(DocPath path, String query, String fragment) { | |
| 61 this(path.getPath(), query, fragment); | |
| 62 } | |
| 63 | |
| 64 /** | |
| 65 * Create a DocLink representing the URI {@code path?query#fragment}. | |
| 66 * Any of the component parts may be null. | |
| 67 */ | |
| 68 public DocLink(String path, String query, String fragment) { | |
| 69 this.path = path; | |
| 70 this.query = query; | |
| 71 this.fragment = fragment; | |
| 72 } | |
| 73 | |
| 74 /** | |
| 75 * Return the link in the form "path?query#fragment", omitting any empty | |
| 76 * components. | |
| 77 */ | |
| 78 @Override | |
| 79 public String toString() { | |
| 80 // common fast path | |
| 81 if (path != null && isEmpty(query) && isEmpty(fragment)) | |
| 82 return path; | |
| 83 | |
| 84 StringBuilder sb = new StringBuilder(); | |
| 85 if (path != null) | |
| 86 sb.append(path); | |
| 87 if (!isEmpty(query)) | |
| 88 sb.append("?").append(query); | |
| 89 if (!isEmpty(fragment)) | |
| 90 sb.append("#").append(fragment); | |
| 91 return sb.toString(); | |
| 92 } | |
| 93 | |
| 94 private static boolean isEmpty(String s) { | |
| 95 return (s == null) || s.isEmpty(); | |
| 96 } | |
| 97 } |
