#----------------------------------------------------------------------
# Basic command processor
#
# Copyright (C) October 11, 2017 -- Dr. William T. Verts
#
# This program ilustrates a number of new Python structures, including
# quoted strings that span lines, the string function to make all
# characters lower case, the raw_input function, the pass statement
# to act as a placeholder for future code, and the use of bool
# (Boolean) variables to control a loop.
#----------------------------------------------------------------------

def Main():

    # Message uses the "triple-double-quote" of Python to build a
    # string that spans lines and contains line-breaks.  Between the
    # opening """ and the closing """ all characters are valid, so
    # indentation is not used. 
    
    Message = """
stop
brighten darken
morered moregreen moreblue
Enter a command --- """
    
    Stop = False
    while (not Stop):
        Command = raw_input(Message)        # Use requestString(Message) for JES dialog box
        Command = Command.lower()           # Convert string to lower case (users may enter upper case by accident)
        
        if   (Command == "stop"):
            Stop = True
        elif (Command == "brighten"):
            pass                            # We'll replace these in later
        elif (Command == "darken"):
            pass                            # We'll replace these in later
        elif (Command == "morered"):
            pass                            # We'll replace these in later
        elif (Command == "moregreen"):
            pass                            # We'll replace these in later
        elif (Command == "moreblue"):
            pass                            # We'll replace these in later
        else:
            print Command + " is an illegal command"    # Use showMessage(...) for JES dialog box        
    return