/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The Whole Platform is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.resources;
import java.io.File;
import java.net.URI;
import java.net.URISyntaxException;
import org.whole.lang.codebase.FilePersistenceProvider;
import org.whole.lang.codebase.IPersistenceProvider;
/**
* @author Riccardo Solmi
*/
public class FileURIResolver extends AbstractURIResolver {
public static final String URI_PREFIX = "file://";
public static final int URI_PREFIX_LENGTH = URI_PREFIX.length();
public boolean canResolve(String contextUri, String uri) {
try {
return uri.substring(0, URI_PREFIX_LENGTH).equalsIgnoreCase(URI_PREFIX) &&
(uri.charAt(URI_PREFIX_LENGTH)=='/' || getHost(uri).equalsIgnoreCase("localhost"));
} catch (IndexOutOfBoundsException e) {
return false;
}
}
public IPersistenceProvider resolve(String contextUri, String uri) {
return new FilePersistenceProvider(new File(getURI(uri)));
}
public String getHost(String uri) {
return uri.substring(URI_PREFIX_LENGTH, uri.indexOf('/', URI_PREFIX_LENGTH));
}
public String getPath(String uri) {
return uri.substring(uri.indexOf('/', URI_PREFIX_LENGTH)+1);
}
public URI getURI(String uriString) {
try {
return new URI("file:///"+getPath(uriString));
} catch (IndexOutOfBoundsException e) {
throw new IllegalArgumentException(e);
} catch (URISyntaxException e) {
throw new IllegalArgumentException(e);
}
}
}