net.tanesha.tftpd.vfs.VersioningHelper.java Source code

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Here is the source code for net.tanesha.tftpd.vfs.VersioningHelper.java

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/*
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
    
 This program 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 General Public License for more details.
    
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    
 Copyright 2003 Martin Kihlgren <fwtftpd A T troja.ath.cx>
    
 */
/*
    
 This is a fork of Martin Kihlgren's fwtftpd, little restructured and some extra
 functionality specific to Grandstream phones was added.
    
 Copyright 2004 Soren Davidsen <soren Zz tanesha.net>
    
 $Id: ByteUtil.java 16 2007-05-25 06:59:11Z sorend $
    
 */
package net.tanesha.tftpd.vfs;

import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.regex.Pattern;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.StringUtils;

public class VersioningHelper implements InitializingBean {

    private Log LOG = LogFactory.getLog(VersioningHelper.class);

    private Properties properties;
    private Map<String, Pattern> matchers = new HashMap<String, Pattern>();

    public void setModelConfiguration(Properties properties) {
        this.properties = properties;
    }

    public void afterPropertiesSet() throws Exception {
        String[] models = StringUtils.commaDelimitedListToStringArray(properties.getProperty("models"));

        for (int i = 0; i < models.length; i++) {
            String model = models[i].trim();

            //String name = properties.getProperty(model + ".name");
            String name = model;
            String matcher = properties.getProperty(model + ".matcher");

            if (name == null || matcher == null)
                throw new Exception("Invalid configuration, " + model + " not configured properly.");

            matchers.put(name, Pattern.compile(matcher));
        }

        LOG.info("VersioningHelper configured: " + matchers);
    }

    public Set<String> getAllModels() {
        return matchers.keySet();
    }

    public String lookupModel(String modelString) {
        if (modelString == null)
            return null;

        for (String key : matchers.keySet()) {
            Pattern pattern = matchers.get(key);

            if (pattern.matcher(modelString).find())
                return key;
        }
        return null;
    }
}