package exercise.engine;

/**
 * This class is used to Parse a Text Question file into it's component
 * parts that can be used to construct a Text Entry Module.
 * @author  Grant K. Olds
 * @version
 * @since   JDK1.2
 */
 
import java.lang.String;
import java.util.StringTokenizer;

public class TextEntryParser extends QuestionEntryParser
{
	private StringBuffer answer;
	private StringBuffer feedback;
	private String contents;
	
	TextEntryParser(){}
	
	
	TextEntryParser( String fileContents)
	{
		contents = fileContents;
		file = new StringTokenizer( fileContents );
	}
	
	
	/**
     * Returns answer
     * @return answer the answer String <code>null</code> string otherwise.
     */
   	public String getAnswer()
   	{
      	return answer.toString();
   	}

   	
   	/**
     * Returns feedback
     * @return feedback the feedback string array <code>null</code> string array otherwise.
     */
   	public String getFeedback()
    {
      return feedback.toString();
   	}
	
	
	/**
	 * This function uses a string the StringTokenizer break each String
	 * into it's component parts and assign them to the appropriate 
	 * variable.
	 * @parameter fileContents the contents of the file being read in.
	 */
	public void parseFile( String fileContents)
	{
	    
	    file = new StringTokenizer ( fileContents );		
			
		//Read all the Tokens
		while( file.hasMoreTokens () )
		{
		    String currToken = file.nextToken();
			
			//if the token is equal to "Section"
			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();
		  		} 
		  	}
		  		// Assign all tokens to the question string until you reach
		  		// "Answer:"
		  	if ( currToken.equals( "Question:" ) )
	  		{
	  			question = new StringBuffer ();
		  		currToken = file.nextToken();
		  		while ( currToken.compareTo( "Answer:" ) != 0 )
		  		{
		  			question.append ( currToken ).append(" ");
		  			currToken = file.nextToken();
		  		}
		  	}  
		  		// Assign all tokens to the answer string until you reach
		  		// "Feedback:"
		  	if ( currToken.equals( "Answer:" ) )
		  	{
		  		answer = new StringBuffer();
		  		currToken = file.nextToken();
		  		while ( currToken.compareTo( "Feedback:" ) != 0 )
		  		{
		  			answer.append ( currToken ).append(" ");
		  			currToken = file.nextToken();
		  		} 
		  	
		  	}
		  		// Assign all tokens tothe feedback string until you reach
		  		// "Hint:"
		  	if ( currToken.equals( "Feedback:" ) )
		  	{
		  		feedback = new StringBuffer();
		  		currToken = file.nextToken();
		  		while ( currToken.compareTo( "Hint:" ) != 0 )
		  		{
		  			feedback.append ( currToken ).append(" ");
		  			currToken = file.nextToken();
		  		} 
		  	
		  	}
		  	
		  	if ( currToken.equals( "Hint:" ) )
		  	{
		  		
		  		hint = new StringBuffer();
		  		currToken = file.nextToken();
		  		while ( file.hasMoreTokens() )
		  		{	
		  			
		  			hint.append ( currToken ).append(" ");
		  			currToken = file.nextToken();
		  					  			
		  		}
		  		
		  		hint.append( currToken );
		     }
		 }	
			
				
		
	}	
		
	public void parseFile(){}
	
	public void test()
	{
		
		
		System.out.println( "The Section is " + section );
		System.out.println( "The Exercise is " + exercise );
		System.out.println( "The Question is " + question );
		System.out.println( "The Answer is " + answer );
		System.out.println( "The Feedback is " + feedback );
		System.out.println( "The Hint is " + hint );
		
	
	}	
}