1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
from .py3compat import byte2int, int2byte, bytes2str
# Map an integer in the inclusive range 0-255 to its string byte representation
_printable = dict((i, ".") for i in range(256))
_printable.update((i, bytes2str(int2byte(i))) for i in range(32, 128))
def hexdump(data, linesize):
"""
data is a bytes object. The returned result is a string.
"""
prettylines = []
if len(data) < 65536:
fmt = "%%04X %%-%ds %%s"
else:
fmt = "%%08X %%-%ds %%s"
fmt = fmt % (3 * linesize - 1,)
for i in range(0, len(data), linesize):
line = data[i : i + linesize]
hextext = " ".join('%02x' % byte2int(b) for b in line)
rawtext = "".join(_printable[byte2int(b)] for b in line)
prettylines.append(fmt % (i, str(hextext), str(rawtext)))
return prettylines
class HexString(bytes):
"""
Represents bytes that will be hex-dumped to a string when its string
representation is requested.
"""
def __init__(self, data, linesize = 16):
self.linesize = linesize
def __new__(cls, data, *args, **kwargs):
return bytes.__new__(cls, data)
def __str__(self):
if not self:
return "''"
sep = "\n"
return sep + sep.join(
hexdump(self, self.linesize))
|
