/*
* @(#)$Id: ResourceUtils.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* Licensed 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.util.resource;
import java.io.File;
import java.net.*;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
*/
public final class ResourceUtils {
private ResourceUtils() {}
public static String toURIString(File file) {
final URI uri = file.toURI();
final boolean isfile = file.isFile();
final String uristr = uri.toString();
if (isfile) {
return uristr;
} else {
return uristr.endsWith("/") ? uristr : uristr + '/';
}
}
public static String toURLString(File file) {
final URL url;
try {
url = file.toURL();
} catch (MalformedURLException e) {
throw new IllegalArgumentException("Could't convert to URL: " + file.getName());
}
final boolean isfile = file.isFile();
final String urlstr = url.toExternalForm();
if (isfile) {
return urlstr;
} else {
return urlstr.endsWith("/") ? urlstr : urlstr + '/';
}
}
public static URI buildURI(String spec) {
assert (spec != null);
final boolean isFile = spec.startsWith("file:");
if (isFile) {
//final File file = new File(spec.substring(5));
//return file.toURI();
return URI.create(spec);
} else {
try {
return new URI(spec);
} catch (URISyntaxException e) {
throw new IllegalArgumentException("Illegal URI form: " + spec, e);
}
}
}
public static URL buildURL(String spec) {
assert (spec != null);
final boolean isFile = spec.startsWith("file:");
try {
if (isFile) {
final File file = new File(spec.substring(5));
return adjustTrailingSlash(file.toURL(), file.isDirectory());
}
return new URL(spec);
} catch (MalformedURLException e) {
throw new IllegalArgumentException("Could't build URL: " + spec);
}
}
private static URL adjustTrailingSlash(URL url, boolean trailingSlash)
throws MalformedURLException {
String file = url.getFile();
if (trailingSlash == (file.endsWith("/"))) {
return url;
}
file = trailingSlash ? file + "/" : file.substring(0, file.length() - 1);
return new URL(url.getProtocol(), url.getHost(), file);
}
}