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Added some ascii art to dbgrbyd.py to help debug how ids change over time

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An example:

  $ ./scripts/dbgrbyd.py disk 4096 0 -i
  mdir 0x0, rev 1, size 59
  off       tag                     data (truncated)
  00000004: create x01 id1 4        aa aa aa aa              ....      .
  0000000c: altblt x80d0 x4                                            |
  00000010: create x01 id2 4        cc cc cc cc              ....      | .
  00000018: altrlt x80d0 x4                                            | |
  0000001c: altbgt x8000 x10                                           | |
  00000020: create x01 id2 4        bb bb bb bb              ....      | .\
  00000028: fcrc 5                  51 53 7d 52 01           QS}R.     | | |
  0000002f: crc0 7                  5f db 22 8a 1b 1b 1b     _."....   | | |
This commit is contained in:
Christopher Haster
2022-12-29 00:59:05 -06:00
parent 2979e6273a
commit 12edc5aee3
1 changed files with 47 additions and 2 deletions
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49
scripts/dbgrbyd.py
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@@ -4,6 +4,15 @@ import itertools as it
import math as m
import struct
COLORS = [
'34', # blue
'31', # red
'32', # green
'35', # purple
'33', # yellow
'36', # cyan
]
def crc32c(data, crc=0):
crc ^= 0xffffffff
@@ -236,6 +245,10 @@ def main(disk, block_size, block1, block2=None, *,
# print tags
if args.get('rbyd'):
alts = []
if args.get('ids'):
count = 0
ids = []
ids_i = 0
j = 4
while j < (block_size if args.get('all') else off):
notes = []
@@ -250,6 +263,16 @@ def main(disk, block_size, block1, block2=None, *,
if not tag & 0x4:
if (tag & 0x7e) != 0x2:
crc = crc32c(data[j:j+size], crc)
# adjust count
if args.get('ids'):
if (tag & 0x7f) == 0x40:
count += 1
ids.insert(((tag >> 15) & 0xffff)-1,
COLORS[ids_i % len(COLORS)])
ids_i += 1
elif (tag & 0x7f) == 0x48:
count -= 1
ids.pop(((tag >> 15) & 0xffff)-1)
# found a crc?
else:
crc_, = struct.unpack('<I', data[j:j+4].ljust(4, b'\0'))
@@ -290,7 +313,25 @@ def main(disk, block_size, block1, block2=None, *,
else ('\x1b[90mb\x1b[m' if color else 'b')
for i in range(len(alts)-1, -1, -1))
if args.get('rbyd') and (tag & 0x7) == 0
else ' %s' % jumprepr(j_) if args.get('jumps')
else ' %s' % jumprepr(j_)
if args.get('jumps')
else ' %s' % ''.join(
'%s%s%s' % (
'\x1b[%sm' % ids[id] if color else '',
'.' if (tag & 0x7f) == 0x40
and id == ((tag >> 15) & 0xffff)-1
else '\'' if (tag & 0x7f) == 0x48
and id == ((tag >> 15) & 0xffff)-1
else '* ' if not tag & 0x4
and id == ((tag >> 15) & 0xffff)-1
else '\ ' if (tag & 0x7f) == 0x40
and id > ((tag >> 15) & 0xffff)-1
else '/ ' if (tag & 0x7f) == 0x48
and id > ((tag >> 15) & 0xffff)-1
else '| ',
'\x1b[m' if color else '')
for id in range(count))
if args.get('ids')
else ''))
# show in-device representation, including some extra
@@ -362,7 +403,7 @@ if __name__ == "__main__":
action='store_true',
help="Don't stop parsing on bad commits.")
parser.add_argument(
'-i', '--in-tree',
'-t', '--in-tree',
action='store_true',
help="Only show tags in the tree.")
parser.add_argument(
@@ -385,6 +426,10 @@ if __name__ == "__main__":
'-j', '--jumps',
action='store_true',
help="Show alt pointer jumps in the margin.")
parser.add_argument(
'-i', '--ids',
action='store_true',
help="Show inserts/deletes of ids in the margin.")
parser.add_argument(
'-e', '--error-on-corrupt',
action='store_true',