| """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 _ctoi(c) <= 127 # ? |
| def isblank(c): return _ctoi(c) in (8,32) |
| def iscntrl(c): return _ctoi(c) <= 31 |
| def isdigit(c): return _ctoi(c) >= 48 and _ctoi(c) <= 57 |
| def isgraph(c): return _ctoi(c) >= 33 and _ctoi(c) <= 126 |
| def islower(c): return _ctoi(c) >= 97 and _ctoi(c) <= 122 |
| def isprint(c): return _ctoi(c) >= 32 and _ctoi(c) <= 126 |
| def ispunct(c): return _ctoi(c) != 32 and not isalnum(c) |
| def isspace(c): return _ctoi(c) in (9, 10, 11, 12, 13, 32) |
| def isupper(c): return _ctoi(c) >= 65 and _ctoi(c) <= 90 |
| def isxdigit(c): return isdigit(c) or \ |
| (_ctoi(c) >= 65 and _ctoi(c) <= 70) or (_ctoi(c) >= 97 and _ctoi(c) <= 102) |
| def isctrl(c): return _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): |
| if isprint(c): |
| return chr(_ctoi(c)) |
| bits = _ctoi(c) |
| if bits == 0x7f: |
| rep = "^?" |
| elif bits & 0x20: |
| rep = chr((bits & 0x7f) | 0x20) |
| else: |
| rep = "^" + chr(((bits & 0x7f) | 0x20) + 0x20) |
| if bits & 0x80: |
| return "!" + rep |
| return rep |