[BlindMath] Scanning braille for sight reading

[Łukasz Grabowski]

John, I wrote this program for you :-)

Save the script below as say dotbr.py and run it with the following
command:
python3 dotbr.py

the keys s d f j k l are mapped to dots 1 2 3 4 5 6, and when you press
space then the current dot is written to the file test.txt. Pressing
for example s twice cancels the dot. To exit the program press x. If you
want I can add a command line option to save in a custom file - it's
not a problem but didn't want to spend time on it without knowing if
you will actually use it.

I'll send it to you as an attachment as well (not sure if attachments
are allowed on this mailing list)

Best,
Lukasz

# start of script
import sys, tty, termios

def getch():
    fd = sys.stdin.fileno()
    old_settings = termios.tcgetattr(fd)
    try:
        tty.setraw(fd)
        ch = sys.stdin.read(1)
    finally:
        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
    return ch

last_key=''
last_br = []
tr = {'s':1, 'd':2, 'f':4, 'j':8,'k':16,'l':32}

while not last_key == 'x':
    last_key = getch()
    if last_key in tr and tr[last_key] in last_br: 
        last_br =[x for x in last_br if not x == tr[last_key]]
    elif last_key in tr:
        last_br.append(tr[last_key])
    if last_key == " ":
        result =10240 + sum(last_br)
        with open("test.txt", "a") as myfile:
            myfile.write(chr(result))
        print(chr(result))
        last_br = []

# end of script