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import struct
from binascii import b2a_hex, a2b_hex
"""
Simple hexdump, 16 bytes per line with offset.
"""
def unhex(data):
if type(data)==bytes:
data = data.decode('ascii')
data = data.replace(' ', '')
data = data.strip()
return a2b_hex(data)
def ashex(line):
return " ".join("%02x" % _ for _ in line)
def aschr(b):
if 32<=b<0x7f:
return "%c" % b
elif 0x80<=b<=0xff:
try:
c = struct.pack("<B", b).decode('cp1251')
if c:
return c
except:
pass
return "."
def asasc(line):
return "".join(aschr(_) for _ in line)
def hexdump(ofs, data, args):
w = args.width
if args.ascdump:
fmt = "%08x: %s"
else:
fmt = "%%08x: %%-%ds %%s" % (3*w-1)
for o in range(0, len(data), w):
if args.ascdump:
print(fmt % (o+ofs, asasc(data[o:o+w])))
else:
print(fmt % (o+ofs, ashex(data[o:o+w]), asasc(data[o:o+w])))
def tohex(data):
return b2a_hex(data).decode('ascii')
def strescape(txt):
if type(txt)==bytes:
txt = txt.decode('cp1251')
txt = txt.replace("\\", "\\\\")
txt = txt.replace("\n", "\\n")
txt = txt.replace("\r", "\\r")
txt = txt.replace("\t", "\\t")
txt = txt.replace("\"", "\\\"")
return txt
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