package fr.in2p3.jsaga.engine.session;
   
   import java.util.regex.Pattern;
   
   /* ***************************************************
    * *** Centre de Calcul de l'IN2P3 - Lyon (France) ***
    * ***             http://cc.in2p3.fr/             ***
    * ***************************************************
    * File:   BaseUrlPattern
   * Author: Sylvain Reynaud (sreynaud@in2p3.fr)
   * ***************************************************
   * Description:                                      */
  
  /**
   *
   */
  public class BaseUrlPattern {
      private BaseUrlItem[] m_items;
  
      public BaseUrlPattern(BaseUrlItem... items) {
          m_items = items;
      }
  
      public BaseUrlItem[] getItems() {
          return m_items;
      }
  
      public String toString() {
          StringBuffer buffer = new StringBuffer();
          for (BaseUrlItem item : m_items) {
              buffer.append(item.toString());
          }
          return buffer.toString();
      }
  
      // accessible to friends for testing purpose
      Pattern toRegExp() {
          StringBuffer buffer = new StringBuffer();
          String nextRegExp = "";
          for (BaseUrlItem item : m_items) {
              buffer.append(item.toRegExp());
              nextRegExp = item.getNextRegExp();
          }
          buffer.append(nextRegExp);
          return Pattern.compile(buffer.toString());
      }
  
      public boolean matches(String url) {
          Pattern regexp = this.toRegExp();
          return regexp.matcher(url).matches();
      }
  
      public boolean conflictsWith(BaseUrlPattern ref) {
          for (int i=0; i<m_items.length && i<ref.getItems().length; i++) {
              if (! m_items[i].conflictsWith(ref.getItems()[i])) {
                  return false;
              }
          }
          return true;
      }
  }