source: trunk/src_apollo/org/apollo/util/TrackNameCreator.java@ 315

package org.apollo.util;

import java.util.HashMap;

/**
 * Creates default names for tracks.
 * 
 * @author Brook Novak
 *
 */
public class TrackNameCreator {
        
        private static HashMap<String, Integer> nameCounters = new HashMap<String, Integer>();

        private TrackNameCreator() {}
        
        
        private static final String DEFAULT_BASENAME = "untitled";
        
        // TODO: LOADING AND SAVING OF COUNTER MAP
        
        /**
         * 
         * @param nameBase
         *              If null, the defulat name
         * @return
         */
        public static String getDefaultName() {
                return getNameCopy(null);
        }
        
        /**
         * Copies a name - increments counter value at the end of the name.
         * 
         * @param name
         *              If null then a default name copy is supplied. The name can already
         *      include the counter - this will be extracted if so.
         * 
         * @return
         *              A copy of the given name. Never null.
         */
        public static String getNameCopy(String name) {
                
                if (name == null) name = DEFAULT_BASENAME;
                
                int i;
                for (i = name.length() - 1; i > 0; i--) {
                        if (!Character.isDigit(name.charAt(i))) {
                                break;
                        }               
                }
                
                // Extract case sensitive basename
                if (i <= 0) {
                        name = DEFAULT_BASENAME;
                } else {
                        name = name.substring(0, i + 1);
                }

                Integer count = nameCounters.get(name.toLowerCase());
                
                if (count == null) {
                        count = new Integer(1);
                } else {
                        count = new Integer(count.intValue() + 1);
                }
                
                // Add or replace current count for this namebase
                nameCounters.put(name.toLowerCase(), count);
                
                return name + count.toString();

        }
}