PiCW/TextKeyer.py at master · ykaw/PiCW · GitHub

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# TextKeyer    - encode text string to morse keying

import sys
import KeyingControl   as key
import CwUtilities     as utl

# function table for dot, dash, and word space
#
functab = {'.': key.dot, '-': key.dash, ' ': key.wspc}

# table for morse code
#
# referring:
#     ITU-T Recommendation F.1, Operational provisions for the international
#     public telegram service, Division B, I. Morse code.
#
#     ITU-R M.1677-1, International Morse code,
#     http://www.itu.int/rec/R-REC-M.1677-1-200910-I/, 2009.
#
codetab = {'a': ".-",      'b': "-...",    'c': "-.-.",    'd': "-..",     'e': ".",
           'f': "..-.",    'g': "--.",     'h': "....",    'i': "..",      'j': ".---",
           'k': "-.-",     'l': ".-..",    'm': "--",      'n': "-.",      'o': "---",
           'p': ".--.",    'q': "--.-",    'r': ".-.",     's': "...",     't': "-",
           'u': "..-",     'v': "...-",    'w': ".--",     'x': "-..-",    'y': "-.--",
           'z': "--..",
           ' ': " ",
           '0': "-----",   '1': ".----",   '2': "..---",   '3': "...--",   '4': "....-",
           '5': ".....",   '6': "-....",   '7': "--...",   '8': "---..",   '9': "----.",

           '.': ".-.-.-",  ',': "--..--",  ':': "---...",  '?': "..--..",  "'": ".----.",
           '-': "-....-",  '/': "-..-.",   '(': "-.--.",   ')': "-.--.-",  '"': ".-..-.",
           '=': "-...-",   '+': ".-.-.",   '*': "-..-",    '@': ".--.-."}
# make upper and lower case letters identical
#
codetab_upper = {}
for ch in codetab:
    if ch.islower():
        codetab_upper[ch.upper()] = codetab[ch]
codetab.update(codetab_upper)

# send characters as morse code
# ... multiple characters are concatenated as a single symbol
#     e.g. chars('SOS') sends "...___...", not "... ___ ...".
# ... An undefined character is treated as a space.
#
def chars(chrs):
    for ch in list(chrs):
        if ch=='>':
            key.setspeed(key.getspeed()+0.5)
            print('<'+utl.speedstr()+'>', end='')
            sys.stdout.flush()
            return
        elif ch=='<':
            key.setspeed(key.getspeed()-0.5)
            print('<'+utl.speedstr()+'>', end='')
            sys.stdout.flush()
            return
        elif ch in codetab:
            sys.stdout.write(ch.upper())
            sys.stdout.flush()
            for dd in list(codetab[ch]):
                functab[dd]()
        else:
            print(ch, end='')
            sys.stdout.flush()
            key.wspc()
    key.cspc()

# send string as a morse code
#     in text, substring such as [BT] represents concatenated symbol
#
#     returns False when whole text not sent
#
def sendstr(text):
    concsym =False
    concword=''

    for ch in list(text):
        try:
            if key.abort_requested():
                return False
            if concsym:
                if ch == ']':
                    print('[', end='')
                    chars(concword)
                    print(']', end='')
                    sys.stdout.flush()
                    concsym =False
                    concword=''
                else:
                    concword=concword + ch
            else:
                if ch == '[':
                    concsym =True
                    concword=''
                else:
                    chars(ch)

        except KeyboardInterrupt:
            key.space()
            return False

    return True