com.sun.tools.oldlets.internal.toolkit.util.DocLink Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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*
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package com.sun.tools.oldlets.internal.toolkit.util;
/**
* Abstraction for simple relative URIs, consisting of a path,
* an optional query, and an optional fragment. DocLink objects can
* be created by the constructors below or from a DocPath using the
* convenience methods, {@link DocPath#fragment fragment} and
* {@link DocPath#query query}.
*
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.
*
*/
public class DocLink {
final String path;
final String query;
final String fragment;
/** Create a DocLink representing the URI {@code #fragment}. */
public static DocLink fragment(String fragment) {
return new DocLink((String) null, (String) null, fragment);
}
/** Create a DocLink representing the URI {@code path}. */
public DocLink(DocPath path) {
this(path.getPath(), null, null);
}
/**
* Create a DocLink representing the URI {@code path?query#fragment}.
* query and fragment may be null.
*/
public DocLink(DocPath path, String query, String fragment) {
this(path.getPath(), query, fragment);
}
/**
* Create a DocLink representing the URI {@code path?query#fragment}.
* Any of the component parts may be null.
*/
public DocLink(String path, String query, String fragment) {
this.path = path;
this.query = query;
this.fragment = fragment;
}
/**
* Return the link in the form "path?query#fragment", omitting any empty
* components.
*/
@Override
public String toString() {
// common fast path
if (path != null && isEmpty(query) && isEmpty(fragment))
return path;
StringBuilder sb = new StringBuilder();
if (path != null)
sb.append(path);
if (!isEmpty(query))
sb.append("?").append(query);
if (!isEmpty(fragment))
sb.append("#").append(fragment);
return sb.toString();
}
private static boolean isEmpty(String s) {
return (s == null) || s.isEmpty();
}
}