package net.sf.logdistiller.util;
   
   /*
    * Licensed under the Apache 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.apache.org/licenses/LICENSE-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.
   */
  
  import java.text.ParseException;
  
  public class StringCutter
  {
      private final String src;
  
      private int index = 0;
  
      public StringCutter( String src )
      {
          this.src = src;
      }
  
      public StringCutter( String src, int startIndex )
      {
          this.src = src;
          this.index = startIndex;
      }
  
      public String parseTo( String delimiter )
          throws ParseException
      {
          return parseTo( delimiter, true );
      }
  
      public String parseTo( String delimiter, boolean failIfNotFound )
          throws ParseException
      {
          int to = src.indexOf( delimiter, index );
          if ( to < index )
          {
              if ( failIfNotFound )
              {
                  throw new ParseException( "delimiter '" + delimiter + "' not found starting from index " + index
                                            + " in '" + src + "'", index );
              }
              String token = src.substring( index );
              index = src.length();
              return token;
          }
          String token = src.substring( index, to );
          index = to + delimiter.length();
          return token;
      }
  
      public String getRemaining()
      {
          return src.substring( index );
      }
  }