package org.lsst.ccs.config.utilities;
   
   import org.lsst.ccs.config.NamesAndTag;
   
   /**
    * @author bamade
    */
   // Date: 19/06/13
   
  public class ConfigUtils {
      /**
       * gets subsystem name, configName and tag name from pathName
       * @param pathName
       * @return
       */
      public static NamesAndTag namesFromPath(String pathName) {
          //split name
          String subsystemName = "" ;
          String configName = "" ;
          String tag = "" ;
          int indexDot =  pathName.lastIndexOf('.');
          int lastPath = pathName.lastIndexOf('/');
          String rawName = pathName.substring(lastPath + 1, indexDot);
          String[] elements = rawName.split("_");
          //falltrough !
          switch(elements.length) {
              case 3: tag = elements[2] ;
              case 2: configName = elements[1] ;
              case 1: subsystemName = elements[0] ;
          }
          return new NamesAndTag(subsystemName,configName,tag) ;
      }
  
      /**
       * creates a fileName from a NamesAndTag object (reverse operation of <TT>namesFromPath</TT>
       * @param namesAndTag
       * @return
       */
      public static String baseNameFromNames(NamesAndTag namesAndTag) {
          return String.format("%s_%s_%s", namesAndTag.getSubsystemName(), namesAndTag.getConfigName(),
                  namesAndTag.getTag()) ;
      }
  }