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m1n1.utils: Add chexdiff32()

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Signed-off-by: Asahi Lina <lina@asahilina.net>
This commit is contained in:
Asahi Lina 2022-08-17 13:13:34 +09:00
parent e3d5f70244
commit 9a39bf15ef
1 changed files with 52 additions and 0 deletions
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52
proxyclient/m1n1/utils.py
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@ -47,6 +47,58 @@ def chexdump(s, st=0, abbreviate=True, stride=16, indent="", print_fn=print):
last = val
skip = False
def chexdiff32(prev, cur, ascii=True, offset=0, offset2=None):
assert len(cur) % 4 == 0
count = len(cur) // 4
words = struct.unpack("<%dI" % count, cur)
if prev is None:
last = None
else:
assert len(prev) == len(cur)
last = struct.unpack("<%dI" % count, prev)
row = 8
skipping = False
out = []
for i in range(0, count, row):
off_text = f"{offset + i * 4:016x}"
if offset2 is not None:
off_text += f"/{offset2 + i * 4:08x}"
if not last:
if i != 0 and words[i:i+row] == words[i-row:i]:
if not skipping:
out.append(f"{off_text} *\n")
skipping = True
else:
out.append(f"{off_text} ")
for new in words[i:i+row]:
out.append("%08x " % new)
if ascii:
out.append("| " + _ascii(cur[4*i:4*(i+row)]))
out.append("\n")
skipping = False
elif last[i:i+row] != words[i:i+row]:
out.append(f"{off_text} ")
for old, new in zip(last[i:i+row], words[i:i+row]):
so = "%08x" % old
sn = s = "%08x" % new
if old != new:
s = "\x1b[32m"
ld = False
for a,b in zip(so, sn):
d = a != b
if ld != d:
s += "\x1b[31;1;4m" if d else "\x1b[32m"
ld = d
s += b
s += "\x1b[m"
out.append(s + " ")
if ascii:
out.append("| " + _ascii(cur[4*i:4*(i+row)]))
out.append("\n")
return "".join(out)
_extascii_table_low = [
"▪", "☺", "☻", "♥", "♦", "♣", "♠", "•",
"◘", "○", "◙", "♂", "♀", "♪", "♫", "☼",