52 lines
1.2 KiB
Python
52 lines
1.2 KiB
Python
# The only clever thing that we do, is strip out "pad" and "last" records
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# To make editing less tedious
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def split(mpwobj):
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"""Split the binary object into a list of "chunks"
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"""
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biglist = []
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ofs = 0
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while ofs < len(mpwobj):
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rectype = mpwobj[ofs]
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if not (rectype <= 20 or rectype == 25):
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raise ValueError(f'bad record type {rectype} at {hex(offset)}')
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if rectype == 1: # First
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reclen = 4
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elif rectype == 2: # Last
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reclen = 2
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elif rectype == 5: # Module
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reclen = 6
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elif rectype == 6: # EntryPoint
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reclen = 8
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elif rectype == 7: # Size
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reclen = 6
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elif rectype == 11: # Filename
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reclen = 8
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elif rectype == 14: # ModuleEnd
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reclen = 8
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elif rectype == 16: # BlockEnd
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reclen = 12
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elif rectype == 25: # XData
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reclen = 8
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else:
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reclen = 256 * mpwobj[ofs+2] + mpwobj[ofs+3]
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biglist.append(mpwobj[ofs:ofs+reclen])
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ofs += reclen
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return biglist
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def join(chunks):
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newlist = []
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for c in chunks:
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newlist.append(c)
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if len(c) & 1:
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newlist.append(b'\0')
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return newlist
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