/*******************************************************************************
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Californium (Cf) CoAP framework.
******************************************************************************/
package ch.ethz.inf.vs.californium.plugtests;
import java.util.Scanner;
import java.util.logging.Logger;
import java.util.regex.Pattern;
import ch.ethz.inf.vs.californium.server.resources.Resource;
import ch.ethz.inf.vs.californium.server.resources.ResourceBase;
/**
* This class implements attributes of the CoRE Link Format.
*
* @author Matthias Kovatsch
*/
public class LinkParser {
protected static final Logger LOG = Logger.getLogger(LinkParser.class.getName());
public static Resource parseTree(String linkFormat) {
Pattern DELIMITER = Pattern.compile("\\s*,+\\s*");
Resource root = new ResourceBase("");
if (linkFormat!=null) {
Scanner scanner = new Scanner(linkFormat);
String path = null;
while ((path = scanner.findInLine("</[^>]*>")) != null) {
// Trim </...>
path = path.substring(2, path.length() - 1);
LOG.finer(String.format("Parsing link resource: %s", path));
// Retrieve specified resource, create if necessary
Resource resource = new ResourceBase(path);
// Read link format attributes
LinkAttribute attr = null;
while (scanner.findWithinHorizon(DELIMITER, 1)==null && (attr = LinkAttribute.parse(scanner))!=null) {
resource.getAttributes().addAttribute(attr.getName(), attr.getValue());
}
root.add(resource);
}
}
return root;
}
}