0001 """Constants and membership tests for ASCII characters""" 0002 0003 NUL = 0x00 # ^@ 0004 SOH = 0x01 # ^A 0005 STX = 0x02 # ^B 0006 ETX = 0x03 # ^C 0007 EOT = 0x04 # ^D 0008 ENQ = 0x05 # ^E 0009 ACK = 0x06 # ^F 0010 BEL = 0x07 # ^G 0011 BS = 0x08 # ^H 0012 TAB = 0x09 # ^I 0013 HT = 0x09 # ^I 0014 LF = 0x0a # ^J 0015 NL = 0x0a # ^J 0016 VT = 0x0b # ^K 0017 FF = 0x0c # ^L 0018 CR = 0x0d # ^M 0019 SO = 0x0e # ^N 0020 SI = 0x0f # ^O 0021 DLE = 0x10 # ^P 0022 DC1 = 0x11 # ^Q 0023 DC2 = 0x12 # ^R 0024 DC3 = 0x13 # ^S 0025 DC4 = 0x14 # ^T 0026 NAK = 0x15 # ^U 0027 SYN = 0x16 # ^V 0028 ETB = 0x17 # ^W 0029 CAN = 0x18 # ^X 0030 EM = 0x19 # ^Y 0031 SUB = 0x1a # ^Z 0032 ESC = 0x1b # ^[ 0033 FS = 0x1c # ^\ 0034 GS = 0x1d # ^] 0035 RS = 0x1e # ^^ 0036 US = 0x1f # ^_ 0037 SP = 0x20 # space 0038 DEL = 0x7f # delete 0039 0040 controlnames = [ 0041 "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", 0042 "BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI", 0043 "DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", 0044 "CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US", 0045 "SP" 0046 ] 0047 0048 def _ctoi(c): 0049 if type(c) == type(""): 0050 return ord(c) 0051 else: 0052 return c 0053 0054 def isalnum(c): return isalpha(c) or isdigit(c) 0055 def isalpha(c): return isupper(c) or islower(c) 0056 def isascii(c): return _ctoi(c) <= 127 # ? 0057 def isblank(c): return _ctoi(c) in (8,32) 0058 def iscntrl(c): return _ctoi(c) <= 31 0059 def isdigit(c): return _ctoi(c) >= 48 and _ctoi(c) <= 57 0060 def isgraph(c): return _ctoi(c) >= 33 and _ctoi(c) <= 126 0061 def islower(c): return _ctoi(c) >= 97 and _ctoi(c) <= 122 0062 def isprint(c): return _ctoi(c) >= 32 and _ctoi(c) <= 126 0063 def ispunct(c): return _ctoi(c) != 32 and not isalnum(c) 0064 def isspace(c): return _ctoi(c) in (9, 10, 11, 12, 13, 32) 0065 def isupper(c): return _ctoi(c) >= 65 and _ctoi(c) <= 90 0066 def isxdigit(c): return isdigit(c) or \ 0067 (_ctoi(c) >= 65 and _ctoi(c) <= 70) or (_ctoi(c) >= 97 and _ctoi(c) <= 102) 0068 def isctrl(c): return _ctoi(c) < 32 0069 def ismeta(c): return _ctoi(c) > 127 0070 0071 def ascii(c): 0072 if type(c) == type(""): 0073 return chr(_ctoi(c) & 0x7f) 0074 else: 0075 return _ctoi(c) & 0x7f 0076 0077 def ctrl(c): 0078 if type(c) == type(""): 0079 return chr(_ctoi(c) & 0x1f) 0080 else: 0081 return _ctoi(c) & 0x1f 0082 0083 def alt(c): 0084 if type(c) == type(""): 0085 return chr(_ctoi(c) | 0x80) 0086 else: 0087 return _ctoi(c) | 0x80 0088 0089 def unctrl(c): 0090 bits = _ctoi(c) 0091 if bits == 0x7f: 0092 rep = "^?" 0093 elif isprint(bits & 0x7f): 0094 rep = chr(bits & 0x7f) 0095 else: 0096 rep = "^" + chr(((bits & 0x7f) | 0x20) + 0x20) 0097 if bits & 0x80: 0098 return "!" + rep 0099 return rep 0100
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