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| """Constants and membership tests for ASCII characters""" | |
| NUL = 0x00 # ^@ | |
| SOH = 0x01 # ^A | |
| STX = 0x02 # ^B | |
| ETX = 0x03 # ^C | |
| EOT = 0x04 # ^D | |
| ENQ = 0x05 # ^E | |
| ACK = 0x06 # ^F | |
| BEL = 0x07 # ^G | |
| BS = 0x08 # ^H | |
| TAB = 0x09 # ^I | |
| HT = 0x09 # ^I | |
| LF = 0x0a # ^J | |
| NL = 0x0a # ^J | |
| VT = 0x0b # ^K | |
| FF = 0x0c # ^L | |
| CR = 0x0d # ^M | |
| SO = 0x0e # ^N | |
| SI = 0x0f # ^O | |
| DLE = 0x10 # ^P | |
| DC1 = 0x11 # ^Q | |
| DC2 = 0x12 # ^R | |
| DC3 = 0x13 # ^S | |
| DC4 = 0x14 # ^T | |
| NAK = 0x15 # ^U | |
| SYN = 0x16 # ^V | |
| ETB = 0x17 # ^W | |
| CAN = 0x18 # ^X | |
| EM = 0x19 # ^Y | |
| SUB = 0x1a # ^Z | |
| ESC = 0x1b # ^[ | |
| FS = 0x1c # ^\ | |
| GS = 0x1d # ^] | |
| RS = 0x1e # ^^ | |
| US = 0x1f # ^_ | |
| SP = 0x20 # space | |
| DEL = 0x7f # delete | |
| controlnames = [ | |
| "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", | |
| "BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI", | |
| "DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", | |
| "CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US", | |
| "SP" | |
| ] | |
| def _ctoi(c): | |
| if type(c) == type(""): | |
| return ord(c) | |
| else: | |
| return c | |
| def isalnum(c): return isalpha(c) or isdigit(c) | |
| def isalpha(c): return isupper(c) or islower(c) | |
| def isascii(c): return 0 <= _ctoi(c) <= 127 # ? | |
| def isblank(c): return _ctoi(c) in (9, 32) | |
| def iscntrl(c): return 0 <= _ctoi(c) <= 31 or _ctoi(c) == 127 | |
| def isdigit(c): return 48 <= _ctoi(c) <= 57 | |
| def isgraph(c): return 33 <= _ctoi(c) <= 126 | |
| def islower(c): return 97 <= _ctoi(c) <= 122 | |
| def isprint(c): return 32 <= _ctoi(c) <= 126 | |
| def ispunct(c): return isgraph(c) and not isalnum(c) | |
| def isspace(c): return _ctoi(c) in (9, 10, 11, 12, 13, 32) | |
| def isupper(c): return 65 <= _ctoi(c) <= 90 | |
| def isxdigit(c): return isdigit(c) or \ | |
| (65 <= _ctoi(c) <= 70) or (97 <= _ctoi(c) <= 102) | |
| def isctrl(c): return 0 <= _ctoi(c) < 32 | |
| def ismeta(c): return _ctoi(c) > 127 | |
| def ascii(c): | |
| if type(c) == type(""): | |
| return chr(_ctoi(c) & 0x7f) | |
| else: | |
| return _ctoi(c) & 0x7f | |
| def ctrl(c): | |
| if type(c) == type(""): | |
| return chr(_ctoi(c) & 0x1f) | |
| else: | |
| return _ctoi(c) & 0x1f | |
| def alt(c): | |
| if type(c) == type(""): | |
| return chr(_ctoi(c) | 0x80) | |
| else: | |
| return _ctoi(c) | 0x80 | |
| def unctrl(c): | |
| bits = _ctoi(c) | |
| if bits == 0x7f: | |
| rep = "^?" | |
| elif isprint(bits & 0x7f): | |
| rep = chr(bits & 0x7f) | |
| else: | |
| rep = "^" + chr(((bits & 0x7f) | 0x20) + 0x20) | |
| if bits & 0x80: | |
| return "!" + rep | |
| return rep | |