| 1 | n/a | """Constants and membership tests for ASCII characters""" |
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| 2 | n/a | |
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| 3 | n/a | NUL = 0x00 # ^@ |
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| 4 | n/a | SOH = 0x01 # ^A |
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| 5 | n/a | STX = 0x02 # ^B |
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| 6 | n/a | ETX = 0x03 # ^C |
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| 7 | n/a | EOT = 0x04 # ^D |
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| 8 | n/a | ENQ = 0x05 # ^E |
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| 9 | n/a | ACK = 0x06 # ^F |
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| 10 | n/a | BEL = 0x07 # ^G |
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| 11 | n/a | BS = 0x08 # ^H |
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| 12 | n/a | TAB = 0x09 # ^I |
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| 13 | n/a | HT = 0x09 # ^I |
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| 14 | n/a | LF = 0x0a # ^J |
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| 15 | n/a | NL = 0x0a # ^J |
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| 16 | n/a | VT = 0x0b # ^K |
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| 17 | n/a | FF = 0x0c # ^L |
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| 18 | n/a | CR = 0x0d # ^M |
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| 19 | n/a | SO = 0x0e # ^N |
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| 20 | n/a | SI = 0x0f # ^O |
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| 21 | n/a | DLE = 0x10 # ^P |
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| 22 | n/a | DC1 = 0x11 # ^Q |
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| 23 | n/a | DC2 = 0x12 # ^R |
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| 24 | n/a | DC3 = 0x13 # ^S |
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| 25 | n/a | DC4 = 0x14 # ^T |
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| 26 | n/a | NAK = 0x15 # ^U |
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| 27 | n/a | SYN = 0x16 # ^V |
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| 28 | n/a | ETB = 0x17 # ^W |
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| 29 | n/a | CAN = 0x18 # ^X |
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| 30 | n/a | EM = 0x19 # ^Y |
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| 31 | n/a | SUB = 0x1a # ^Z |
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| 32 | n/a | ESC = 0x1b # ^[ |
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| 33 | n/a | FS = 0x1c # ^\ |
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| 34 | n/a | GS = 0x1d # ^] |
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| 35 | n/a | RS = 0x1e # ^^ |
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| 36 | n/a | US = 0x1f # ^_ |
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| 37 | n/a | SP = 0x20 # space |
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| 38 | n/a | DEL = 0x7f # delete |
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| 39 | n/a | |
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| 40 | n/a | controlnames = [ |
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| 41 | n/a | "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", |
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| 42 | n/a | "BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI", |
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| 43 | n/a | "DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", |
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| 44 | n/a | "CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US", |
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| 45 | n/a | "SP" |
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| 46 | n/a | ] |
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| 47 | n/a | |
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| 48 | n/a | def _ctoi(c): |
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| 49 | n/a | if type(c) == type(""): |
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| 50 | n/a | return ord(c) |
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| 51 | n/a | else: |
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| 52 | n/a | return c |
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| 53 | n/a | |
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| 54 | n/a | def isalnum(c): return isalpha(c) or isdigit(c) |
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| 55 | n/a | def isalpha(c): return isupper(c) or islower(c) |
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| 56 | n/a | def isascii(c): return 0 <= _ctoi(c) <= 127 # ? |
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| 57 | n/a | def isblank(c): return _ctoi(c) in (9, 32) |
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| 58 | n/a | def iscntrl(c): return 0 <= _ctoi(c) <= 31 or _ctoi(c) == 127 |
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| 59 | n/a | def isdigit(c): return 48 <= _ctoi(c) <= 57 |
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| 60 | n/a | def isgraph(c): return 33 <= _ctoi(c) <= 126 |
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| 61 | n/a | def islower(c): return 97 <= _ctoi(c) <= 122 |
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| 62 | n/a | def isprint(c): return 32 <= _ctoi(c) <= 126 |
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| 63 | n/a | def ispunct(c): return isgraph(c) and not isalnum(c) |
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| 64 | n/a | def isspace(c): return _ctoi(c) in (9, 10, 11, 12, 13, 32) |
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| 65 | n/a | def isupper(c): return 65 <= _ctoi(c) <= 90 |
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| 66 | n/a | def isxdigit(c): return isdigit(c) or \ |
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| 67 | n/a | (65 <= _ctoi(c) <= 70) or (97 <= _ctoi(c) <= 102) |
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| 68 | n/a | def isctrl(c): return 0 <= _ctoi(c) < 32 |
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| 69 | n/a | def ismeta(c): return _ctoi(c) > 127 |
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| 70 | n/a | |
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| 71 | n/a | def ascii(c): |
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| 72 | n/a | if type(c) == type(""): |
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| 73 | n/a | return chr(_ctoi(c) & 0x7f) |
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| 74 | n/a | else: |
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| 75 | n/a | return _ctoi(c) & 0x7f |
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| 76 | n/a | |
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| 77 | n/a | def ctrl(c): |
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| 78 | n/a | if type(c) == type(""): |
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| 79 | n/a | return chr(_ctoi(c) & 0x1f) |
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| 80 | n/a | else: |
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| 81 | n/a | return _ctoi(c) & 0x1f |
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| 82 | n/a | |
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| 83 | n/a | def alt(c): |
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| 84 | n/a | if type(c) == type(""): |
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| 85 | n/a | return chr(_ctoi(c) | 0x80) |
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| 86 | n/a | else: |
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| 87 | n/a | return _ctoi(c) | 0x80 |
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| 88 | n/a | |
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| 89 | n/a | def unctrl(c): |
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| 90 | n/a | bits = _ctoi(c) |
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| 91 | n/a | if bits == 0x7f: |
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| 92 | n/a | rep = "^?" |
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| 93 | n/a | elif isprint(bits & 0x7f): |
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| 94 | n/a | rep = chr(bits & 0x7f) |
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| 95 | n/a | else: |
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| 96 | n/a | rep = "^" + chr(((bits & 0x7f) | 0x20) + 0x20) |
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| 97 | n/a | if bits & 0x80: |
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| 98 | n/a | return "!" + rep |
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| 99 | n/a | return rep |
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