package text;

import java.io.*;

public class FormattedOutput {

	private static int INC = 4;
	private int indent;
	private int column;

	private PrintWriter printWriter;

	public FormattedOutput( File file ) throws Error {
		try {
			OutputStream outputStream = new FileOutputStream( file );
			printWriter = new PrintWriter( outputStream );
			}
		catch ( IOException exception ) {
			throw new Error( "Unable to open file " + file );
			}
		}

	public void println() {
		printWriter.println();
		printWriter.flush();
		column = 0;
		}

	public void print( char c ) {
		while ( column < indent ) {
			printWriter.print( ' ' );
			column++;
			}
		printWriter.print( c );
		column++;
		}

	private void print( String s ) {
		int i = 0;
		while ( i < s.length() ) {
			if ( s.charAt( i ) == '%' ) {
				i++;
				switch ( s.charAt( i ) ) {
					case '+':
						indent += INC;
						break;
					case '-':
						indent -= INC;
						break;
					case 'n':
						println();
						break;
					default:
						print( s.charAt( i ) );
					}
				i++;
				}
			else {
				print( s.charAt( i++ ) );
				}
			}
		}

	public void print( byte b ) {
		print( "" + b );
		}

	public void print( int i ) {
		print( "" + i );
		}

	public void print( double d ) {
		print( "" + d );
		}

	public void print( Object s ) {
		print( "" + s );
		}

	public void println( String s ) {
		print( s );
		println();
		}

	public void println( byte b ) {
		println( "" + b );
		}

	public void println( int i ) {
		println( "" + i );
		}

	public void println( double d ) {
		println( "" + d );
		}

	public void println( Object s ) {
		println( "" + s );
		}

	public void printStackTrace( Throwable throwable ) {
		printWriter.println();
		throwable.printStackTrace( printWriter );
		printWriter.flush();
		}

	public void debugln() {
		if ( Print.DEBUG ) {
			println();
			}
		}

	public void debugln( String s ) {
		if ( Print.DEBUG ) {
			print( s );
			println();
			}
		}

	public void debugln( byte b ) {
		debugln( "" + b );
		}

	public void debugln( int i ) {
		debugln( "" + i );
		}

	public void debugln( double d ) {
		debugln( "" + d );
		}

	public void debugln( Object s ) {
		debugln( "" + s );
		}

	public void debugStackTrace( Throwable throwable ) {
		if ( Print.DEBUG ) {
			printWriter.println();
			throwable.printStackTrace( printWriter );
			printWriter.flush();
			}
		}

	}