/opt/imh-python/lib/python3.9/site-packages/construct/lib
Edit: /opt/imh-python/lib/python3.9/site-packages/construct/lib/hex.py (3174B)
from construct.lib.py3compat import *
import binascii
class HexDisplayedInteger(integertypes[0]):
"""Used internally."""
def __str__(self):
return "0x" + format(self, self.fmtstr).upper()
@staticmethod
def new(intvalue, fmtstr):
obj = HexDisplayedInteger(intvalue)
obj.fmtstr = fmtstr
return obj
class HexDisplayedBytes(bytestringtype):
"""Used internally."""
def __str__(self):
if not hasattr(self, "render"):
self.render = "unhexlify(%s)" % (trimstring(binascii.hexlify(self)), )
return self.render
class HexDisplayedDict(dict):
"""Used internally."""
def __str__(self):
if not hasattr(self, "render"):
self.render = "unhexlify(%s)" % (trimstring(binascii.hexlify(self["data"])), )
return self.render
class HexDumpDisplayedBytes(bytestringtype):
"""Used internally."""
def __str__(self):
if not hasattr(self, "render"):
self.render = hexdump(self, 16)
return self.render
class HexDumpDisplayedDict(dict):
"""Used internally."""
def __str__(self):
if not hasattr(self, "render"):
self.render = hexdump(self["data"], 16)
return self.render
# Map an integer in the inclusive range 0-255 to its string byte representation
PRINTABLE = [bytes2str(int2byte(i)) if 32 <= i < 128 else '.' for i in range(256)]
HEXPRINT = [format(i, '02X') for i in range(256)]
def hexdump(data, linesize):
r"""
Turns bytes into a unicode string of the format:
::
>>>print(hexdump(b'0' * 100, 16))
hexundump(\"\"\"
0000 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0000000000000000
0010 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0000000000000000
0020 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0000000000000000
0030 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0000000000000000
0040 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0000000000000000
0050 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0000000000000000
0060 30 30 30 30 0000
\"\"\")
"""
if len(data) < 16**4:
fmt = "%%04X %%-%ds %%s" % (3*linesize-1,)
elif len(data) < 16**8:
fmt = "%%08X %%-%ds %%s" % (3*linesize-1,)
else:
raise ValueError("hexdump cannot process more than 16**8 or 4294967296 bytes")
prettylines = []
prettylines.append('hexundump("""')
for i in range(0, len(data), linesize):
line = data[i:i+linesize]
hextext = " ".join(HEXPRINT[b] for b in line)
rawtext = "".join(PRINTABLE[b] for b in line)
prettylines.append(fmt % (i, str(hextext), str(rawtext)))
prettylines.append('""")')
prettylines.append("")
return "\n".join(prettylines)
def hexundump(data, linesize):
r"""
Reverse of `hexdump`.
"""
raw = []
for line in data.split("\n")[1:-2]:
line = line[line.find(" "):].lstrip()
bytes = [int2byte(int(s,16)) for s in line[:3*linesize].split()]
raw.extend(bytes)
return b"".join(raw)