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Added deletion to custom attributes

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This follows from enabling tag deletion, however does require some
consideration with the APIs.

Now we can remove custom attributes, as well as determine if an attribute
exists or not.
This commit is contained in:
Christopher Haster
2018-09-09 18:48:18 -05:00
parent c67a41af7a
commit 617dd87621
5 changed files with 63 additions and 22 deletions
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9
tests/debug.py
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@@ -81,20 +81,21 @@ def main(*blocks):
size = (tag & 0x00000fff) >> 0
iscrc = (type & 0x1f0) == 0x0f0
data = file.read(size)
data = file.read(size if size != 0xfff else 0)
if iscrc:
crc = binascii.crc32(data[:4], crc)
else:
crc = binascii.crc32(data, crc)
print '%04x: %08x %-14s %3s %3d %-23s %-8s' % (
print '%04x: %08x %-14s %3s %3s %-23s %-8s' % (
off, tag,
typeof(type) + (' bad!' if iscrc and ~crc else ''),
id if id != 0x3ff else '.', size,
id if id != 0x3ff else '.',
size if size != 0xfff else 'x',
' '.join('%02x' % ord(c) for c in data[:8]),
''.join(c if c >= ' ' and c <= '~' else '.' for c in data[:8]))
off += tag & 0xfff
off += size if size != 0xfff else 0
if iscrc:
crc = 0
tag ^= (type & 1) << 31