100 lines
2.6 KiB
Python
100 lines
2.6 KiB
Python
|
"""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
|