/*

  * Copyright 2009 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may        obtain a copy of the License at

  *

  *         http://www.osedu.org/licenses/ECL-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.student.contract.model.util;

 /**

  * Matches patterns that define groups of types or groups of states

  * Currently supports comma separated lists and wildcard * at the end

  * @author nwright

  */

 public class GroupTypeStatePatternMatcher {

     private String pattern;

     public GroupTypeStatePatternMatcher(String pattern) {

         this.pattern = pattern;

     }

     public boolean matches(String key) {

         if (pattern.equals("*")) {

             return true;

         }

         // check for wildcard * at the end

         if (pattern.endsWith("*")) {

             if (key.toLowerCase().startsWith(pattern.substring(0, pattern.length()

                     - 1).toLowerCase())) {

                 return true;

             }

         }

         // Check if key is in a comma separated list of keys

         // changed it so the list could contain a wildard as one of it's elements

         // for example kuali.type.foo.*,kuali.type.bar.joe

         if (pattern.indexOf(",") != -1) {

             String[] patterns = pattern.split(",");

             for (String pat : patterns) {

                 GroupTypeStatePatternMatcher matcher =

                         new GroupTypeStatePatternMatcher(pat);

                 if (matcher.matches(key)) {

                     return true;

                 }

             }

         }

         //ok the pattern is the key so just compare

         if (pattern.equalsIgnoreCase(key)) {

             return true;

         }

         return false;

     }

 }