| 1 | import sys, os, io, termios |
| 2 | |
| 3 | class conv(object): |
| 4 | msg_notice = 0 |
| 5 | msg_info = 1 |
| 6 | msg_debug = 2 |
| 7 | |
| 8 | def error(self, msg): |
| 9 | pass |
| 10 | def message(self, msg, level=0): |
| 11 | pass |
| 12 | def prompt(self, prompt, echo, default=None): |
| 13 | return default |
| 14 | |
| 15 | class termconv(conv): |
| 16 | def __init__(self, ifp, ofp): |
| 17 | self.ifp = ifp |
| 18 | self.ofp = ofp |
| 19 | |
| 20 | def error(self, msg): |
| 21 | self.ofp.write("%s\n" % (msg,)) |
| 22 | self.ofp.flush() |
| 23 | def message(self, msg, level=0): |
| 24 | if level <= self.msg_info: |
| 25 | self.ofp.write("%s\n" % (msg,)) |
| 26 | self.ofp.flush() |
| 27 | def prompt(self, prompt, echo, default=None): |
| 28 | if echo: |
| 29 | self.ofp.write(prompt) |
| 30 | self.ofp.flush() |
| 31 | ret = self.ifp.readline() |
| 32 | assert ret[-1] == '\n' |
| 33 | return ret[:-1] |
| 34 | else: |
| 35 | attr = termios.tcgetattr(self.ifp.fileno()) |
| 36 | bka = list(attr) |
| 37 | try: |
| 38 | attr[3] &= ~termios.ECHO |
| 39 | termios.tcflush(self.ifp.fileno(), termios.TCIOFLUSH) |
| 40 | termios.tcsetattr(self.ifp.fileno(), termios.TCSANOW, attr) |
| 41 | self.ofp.write(prompt) |
| 42 | self.ofp.flush() |
| 43 | ret = self.ifp.readline() |
| 44 | self.ofp.write("\n") |
| 45 | assert ret[-1] == '\n' |
| 46 | return ret[:-1] |
| 47 | finally: |
| 48 | termios.tcsetattr(self.ifp.fileno(), termios.TCSANOW, bka) |
| 49 | |
| 50 | class ctermconv(termconv): |
| 51 | def __init__(self, fp): |
| 52 | super().__init__(fp, fp) |
| 53 | self.cfp = fp |
| 54 | |
| 55 | def close(self): |
| 56 | self.cfp.close() |
| 57 | def __enter__(self): |
| 58 | return self |
| 59 | def __exit__(self, *excinfo): |
| 60 | self.close() |
| 61 | return False |
| 62 | |
| 63 | null = conv() |
| 64 | stdioconv = termconv(sys.stdin, sys.stdout) |
| 65 | |
| 66 | def ttyconv(): |
| 67 | return ctermconv(io.TextIOWrapper(io.FileIO(os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY), "r+"))) |
| 68 | |
| 69 | def default(): |
| 70 | return null |