package exercise.writer;

/**
 * This class is used to Parse a Multiple Choice Question file into 
 * it's component parts that can be used to construct a Multiple Choice
 * Entry Module.
 * @author  Grant K. Olds
 * @version
 * @since   JDK1.2
 */
 
 import java.lang.*;
 import java.util.*;
 
 public class MultipleChoiceEntryParser extends QuestionEntryParser
 {
 	final static int A = 0;
	final static int B = 1;
	final static int C = 2;
	final static int D = 3;
	final static int E = 4;
	final static int F = 5;
	final static int G = 6;
	final static int H = 7;
	final static int I = 8;
	final static int J = 9;
	
	private StringBuffer [] choiceArray;
 	private StringBuffer [] feedbackArray;
 	private StringBuffer correctFeedback;
 	private int [] answerArray;
 	
 	MultipleChoiceEntryParser()
 	{
 	
 	}
 	
 	MultipleChoiceEntryParser( String fileContents )
 	{
 		file = new StringTokenizer ( fileContents );
 	}
 	
 	
 	public void parseFile(){}
 	
 	/**
    * Returns the choiceArray
    * @return the choice Array <code>null</code> string array otherwise.
    */
   	public String [] getChoiceArray()
   	{
    	String [] temp = new String[10];
    	
    	for(int i = 0; i < 10; i++)
    	{
    		if( choiceArray[i] != null )
    			temp[i] = choiceArray[i].toString();
    	}
    	
    	return temp;
   	}

	/**
    * Returns the correct Feedback
    * @return the correct Feedback <code>null</code> string otherwise.
    */
   	public String getCorrectFeedback()
   	{
      	return correctFeedback.toString();
   	}

   /**
    * Returns the feedback Array
    * @return the feedback string array <code>null</code> string array otherwise.
    */
   public String [] getFeedbackArray()
   {
      String [] temp = new String[10];
    	
    	for(int i = 0; i < 10; i++)
    	{
    		if( feedbackArray[i] != null )
    			temp[i] = feedbackArray[i].toString();
    	}
    	
    	return temp;
   }


   /**
    * Returns the answer Array 
    * @return the answer array <code>null</code> int array otherwise.
    */
   public int [] getAnswerArray()
   {
      return answerArray;
   }

 	
 	public void parseFile ( String fileContents )
 	{
 		file = new StringTokenizer ( fileContents );
 		String currToken = new String();
 		
 		while ( file.hasMoreTokens () )
 		{
 			currToken = file.nextToken();
 			
 			if ( currToken.equals( "Section:" ) )
			{
		  		//assign all the tokens to the section string until you reach
		  		//Exercise.
		  		
		  	
		  		currToken = file.nextToken();
		  		section = new StringBuffer();
		  		
		  		while ( currToken.compareTo( "Exercise:") != 0 )
		  		{
		  			section.append ( currToken );
		  			currToken = file.nextToken(); 			
		  		} 
		  	 }	
		  	 
		  	 
		  	 // assign all tokens to the exercise strint until you reach	
		  	// "Question:"
		  	if ( currToken.equals( "Exercise:" ) )
		  	{
		  		exercise = new StringBuffer ();
		  		currToken = file.nextToken();
		  		
		  		while ( currToken.compareTo( "Question:") != 0 )
		  		{
		  			exercise.append ( currToken );
		  			currToken = file.nextToken();
		  		} 
		  		
		  	}
		  	
		  	
		  	if ( currToken.equals( "Question:" ) )
	  		{
	  			question = new StringBuffer();
		  		currToken = file.nextToken();
		  		
		  		
		  		while ( currToken.compareTo( "ChoiceBegin") != 0 )
		  		{
		  			question.append( currToken ).append(" ");
		  			currToken = file.nextToken();
		  		}
		  	}
		  	
		  	
		  	if ( currToken.equals ( "ChoiceBegin" ) )
		  	{
		  	
		  		
		  		choiceArray = new StringBuffer[10];
		  		currToken = file.nextToken();
		  		
		  		while ( currToken.compareTo( "ChoiceEnd" ) != 0 )
		  		{
		  		    
		  		    
		  			if ( currToken.equals ( "ChoiceA:") )
		  			{
		  			    choiceArray[A] = new StringBuffer();
		  			    currToken = file.nextToken();
		  			    

		  			    
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceB:")) )
		  				{
		  					
		  					choiceArray[A].append( currToken ).append(" ");
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			else if ( currToken.equals ( "ChoiceB:") )
		  			{
		  				choiceArray[B] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceC:")) )
		  				{
		  					
		  					
		  					choiceArray[B].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceC:"))
		  			{
		  				choiceArray[C] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceD:")) )
		  				{
		  					
		  					
		  					choiceArray[C].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceD:"))
		  			{
		  				choiceArray[D] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceE:")) )
		  				{
		  					
		  					
		  					
		  					choiceArray[D].append( currToken ).append( " " );
		  					
		  					currToken = file.nextToken();
		  					
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceE:"))
		  			{
		  				choiceArray[E] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceF:")) )
		  				{
		  					
		  					
		  					choiceArray[E].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  					
		  				}
		  				
		  				
		  			}
		  			
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceF:"))
		  			{
		  				
		  				choiceArray[F] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceG:")) )
		  				{
		  				
		  					
		  					choiceArray[F].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceG:"))
		  			{
		  				choiceArray[G] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceH:")) )
		  				{
		  					
		  					
		  					choiceArray[G].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceH:"))
		  			{
		  				choiceArray[H] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceI:")) )
		  				{
		  					
		  					
		  					choiceArray[H].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceI:"))
		  			{
		  				choiceArray[I] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd" ) ) && 
		  						!(currToken.equals("ChoiceJ:")) )
		  				{
		  					
		  					
		  					choiceArray[I].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "ChoiceJ:"))
		  			{
		  				choiceArray[J] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "ChoiceEnd:" )) )
		  				{
		  					
		  					
		  					choiceArray[J].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  		}//end while Choice End
		  	}//if choiceBegin
		  	
		  	if ( currToken.equals ("AnswerBegin") )
		  	{
		 
		  		answerArray = new int[10];
		  		for( int i = 0; i < 10; i++ )
		  		{
		  			answerArray[i] = -1;
		  		}
		  		
		  		
		  		
		  		while ( ! ( currToken.equals ( "AnswerEnd" )))
		  		{
		  			currToken = file.nextToken();
		  			
		  			if ( currToken.equals ( "A" ) )
		  			{
		  				answerArray[A] = A;	
		  			}
		  			
		  			else if ( currToken.equals ( "B" ) )
		  			{
		  				answerArray[B] = B;	
		  			}
		  			
		  			else if ( currToken.equals ( "C" ) )
		  			{
		  				answerArray[C] = C;	
		  			}
		  			
		  			else if ( currToken.equals ( "D" ) )
		  			{
		  				answerArray[D] = D;	
		  			}
		  			
		  			else if ( currToken.equals ( "E" ) )
		  			{
		  				answerArray[E] = E;	
		  			}
		  			
		  			else if ( currToken.equals ( "F" ) )
		  			{
		  				answerArray[F] = F;	
		  			}
		  			
		  			else if ( currToken.equals ( "G" ) )
		  			{
		  				answerArray[G] = G;	
		  			}
		  			
		  			else if ( currToken.equals ( "H" ) )
		  			{
		  				answerArray[H] = H;	
		  			}
		  			
		  			else if ( currToken.equals ( "I" ) )
		  			{
		  				answerArray[I] = I;	
		  			}
		  			
		  			else if ( currToken.equals ( "J" ) )
		  			{
		  				answerArray[J] = J;	
		  			}
		  			
		  			
		  		}// end of while AnswerEnd
		  	}// end of if AnswerBegin
		  	
		  	
		  	if ( currToken.equals ("FeedbackBegin")) 
		  	{
		  		feedbackArray = new StringBuffer[10];
		  		currToken = file.nextToken();
		  		

		  		while ( ! ( currToken.equals ("FeedbackEnd") ))
		  		{
					
		  			
		  			if ( currToken.equals ("CorrectFeedback:"))
		  			{
		  				correctFeedback = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					correctFeedback.append( currToken ).append(" ");
		  					currToken = file.nextToken();
		  				}
		  			}
		  			
		  			else if ( currToken.equals ( "feedbackA:") )
		  			{
		  			    
		  			    currToken = file.nextToken();
		  			    
		  			    feedbackArray[A] = new StringBuffer();
		  			    
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) &&  
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					feedbackArray[A].append( currToken ).append(" ");
		  					currToken = file.nextToken();
		  					
		  				}		
		  			}
		  			
		  			else if ( currToken.equals ( "feedbackB:") )
		  			{
		  				feedbackArray[B] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					
		  					feedbackArray[B].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "feedbackC:"))
		  			{
		  				feedbackArray[C] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					
		  					feedbackArray[C].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "feedbackD:"))
		  			{
		  				feedbackArray[D] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					feedbackArray[D].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}	
		  				
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "feedbackE:"))
		  			{
		  				feedbackArray[E] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					
		  					
		  					feedbackArray[E].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  					
		  				}
		  				
		  				
		  			}
		  			
		  			
		  			
		  			else if ( currToken.equals ( "feedbackF:"))
		  			{
		  				
		  				
		  				feedbackArray[F] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					
		  					
		  					feedbackArray[F].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "feedbackG:"))
		  			{
		  				feedbackArray[G] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					
		  					feedbackArray[G].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "feedbackH:"))
		  			{
		  				feedbackArray[H] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackI:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					
		  					feedbackArray[H].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "feedbackI:"))
		  			{
		  				feedbackArray[I] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackJ:")))
		  				{
		  					
		  					
		  					feedbackArray[I].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
		  			
		  			
		  			else if ( currToken.equals ( "feedbackJ:"))
		  			{
		  				feedbackArray[J] = new StringBuffer();
		  				currToken = file.nextToken();
		  				
		  				//while ( !(currToken.equals ( "FeedbackEnd" )) )
		  				while ( !(currToken.equals ( "FeedbackEnd" ) ) && 
		  						!(currToken.equals("feedbackA:")) && 
		  						!(currToken.equals("feedbackB:")) &&
		  						!(currToken.equals("feedbackC:")) &&
		  						!(currToken.equals("feedbackD:")) &&
		  						!(currToken.equals("feedbackE:")) &&
		  						!(currToken.equals("feedbackF:")) &&
		  						!(currToken.equals("feedbackG:")) &&
		  						!(currToken.equals("feedbackH:")) &&
		  						!(currToken.equals("feedbackI:")))
		  				{
		  					
		  					
		  					feedbackArray[J].append( currToken ).append( " " );
		  					currToken = file.nextToken();
		  				}		
		  			}
			  	}// end of while Feedback End	
		  	}//end of if FeedbackBegin
		  	
		  	if ( currToken.equals( "Hint:" ) )
		  	{
		  		
		  		hint = new StringBuffer();
		  		currToken = file.nextToken();
		  		
		  		while ( file.hasMoreTokens() )
		  		{	
		  			
		  			hint.append ( currToken ).append(" ");
		  			currToken = file.nextToken();
		  					  			
		  		}
		  		
		  		hint.append( currToken );
		     }
		     
 		}// end while file has more Tokensloop
 	}// end parse file
 	
 	
 	public void test()
	{
		
		
		System.out.println( "The Section is " + section );
		System.out.println( "The Exercise is " + exercise );
		System.out.println( "The Question is " + question );
		for( int i = 0; i < 10; i++)
		{
			if ( choiceArray [i] != null )
				System.out.println ( "Choice " + new Integer ( i ) + " is " + choiceArray[i] );
			
		}
		
		for( int j = 0; j < 10; j++ )
		{
			if ( answerArray[j] != -1 )
				System.out.println ( "Answer " + new Integer ( j ) + " is " + answerArray[j] );
		}
		
		System.out.println ("The Correct Feedback is " + correctFeedback );
		
		for( int i = 0; i < 10; i++ )
		{
			if ( feedbackArray [i] != null )
				System.out.println ( "Feedback " + new Integer ( i ) + " is " + feedbackArray[i] );
			
		}
		
		System.out.println("The hint is " + hint );
	}
 }