21 lines
527 B
Python
21 lines
527 B
Python
import binascii
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def insert_crc(i_filename, fbi_mode=False, o_filename=None):
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if o_filename is None:
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o_filename = i_filename
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with open(i_filename, 'rb') as f:
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fdata = f.read()
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fcrc = binascii.crc32(fdata).to_bytes(4, byteorder="big")
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flength = len(fdata).to_bytes(4, byteorder="big")
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with open(o_filename, 'wb') as f:
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if fbi_mode:
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f.write(flength)
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f.write(fcrc)
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f.write(fdata)
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else:
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f.write(fdata)
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f.write(fcrc)
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