/* PathPrefixDatePrefixQueryRequestParser
*
* $Id$
*
* Created on 6:42:18 PM Apr 24, 2007.
*
* Copyright (C) 2007 Internet Archive.
*
* This file is part of wayback-core.
*
* wayback-core is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* any later version.
*
* wayback-core 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with wayback-core; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.archive.wayback.archivalurl.requestparser;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.httpclient.URIException;
import org.archive.wayback.WaybackConstants;
import org.archive.wayback.core.Timestamp;
import org.archive.wayback.core.WaybackRequest;
import org.archive.wayback.requestparser.PathRequestParser;
/**
* RequestParser implementation that extracts request info from an Archival Url
* representing an url prefix and a date prefix.
*
* @author brad
* @version $Date$, $Revision$
*/
public class PathPrefixDatePrefixQueryRequestParser extends PathRequestParser {
/**
* Regex which parses Archival URL queries into timestamp + URL for URLs
* beginning with the URL prefix
*/
private final static Pattern WB_PATH_QUERY_REGEX = Pattern
.compile("^(\\d{0,13})\\*/(.*)\\*$");
public WaybackRequest parse(String requestPath) {
WaybackRequest wbRequest = null;
Matcher matcher = WB_PATH_QUERY_REGEX.matcher(requestPath);
if (matcher != null && matcher.matches()) {
wbRequest = new WaybackRequest();
String dateStr = matcher.group(1);
String urlStr = matcher.group(2);
String startDate;
String endDate;
if(dateStr.length() == 0) {
startDate = getEarliestTimestamp();
endDate = getLatestTimestamp();
} else {
startDate = Timestamp.parseBefore(dateStr).getDateStr();
endDate = Timestamp.parseAfter(dateStr).getDateStr();
}
wbRequest.put(WaybackConstants.REQUEST_START_DATE,
startDate);
wbRequest.put(WaybackConstants.REQUEST_END_DATE,endDate);
wbRequest.put(WaybackConstants.REQUEST_TYPE,
WaybackConstants.REQUEST_URL_PREFIX_QUERY);
try {
wbRequest.setRequestUrl(urlStr);
} catch (URIException e) {
wbRequest = null;
}
}
return wbRequest;
}
}