import java.io.*;
import java.util.*;
import java.util.regex.*;

class ParseEmail2 {
    public static void main(String[] args) throws IOException {
        Reader r = new BufferedReader(new FileReader("message1.txt"));
        Scanner message = new Scanner(r);
        String line, field, value;
        int pos;
        Pattern leadingWhitespace = Pattern.compile("\\A[ \t]+");
        Matcher m;
        
        // read headers
        while ( message.hasNextLine() ) {
            line = message.nextLine();

            if ( line.length()==0 ) {
                // end of headers
            	break;
            }
            if ( Pattern.matches("\\A\\s+.*", line) ) {
                // continuation line
            	System.out.println("continuation");
                // should do something better here: add it to the string, say.
            } else {
                // new header
                pos = line.indexOf(":");
                field = line.substring(0, pos);
                value = line.substring(pos+1);
                m = leadingWhitespace.matcher(value);
                value = m.replaceFirst("");
                System.out.println(field);
                System.out.println(value);
            }
        }
        

        // read message body
        while ( message.hasNextLine() ) {
        	line = message.nextLine();
        	// do something with each line...
        }
    }
}