mirror of
https://github.com/notwa/mm
synced 2024-11-05 03:19:02 -08:00
36 lines
902 B
Python
36 lines
902 B
Python
import os
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import struct, array
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R1 = lambda data: struct.unpack('>B', data)[0]
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R2 = lambda data: struct.unpack('>H', data)[0]
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R4 = lambda data: struct.unpack('>I', data)[0]
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W1 = lambda data: struct.pack('>B', data)
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W2 = lambda data: struct.pack('>H', data)
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W4 = lambda data: struct.pack('>I', data)
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def dump_as(b, fn, size=None):
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with open(fn, 'w+b') as f:
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if size:
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f.write(bytearray(size))
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f.seek(0)
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f.write(b)
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def swap_order(f, size='H'):
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f.seek(0)
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a = array.array(size, f.read())
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a.byteswap()
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f.seek(0)
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f.write(a.tobytes())
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class SubDir:
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def __init__(self, d):
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self.d = d
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def __enter__(self):
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self.cwd = os.getcwd()
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try:
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os.mkdir(self.d)
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except FileExistsError:
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pass
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os.chdir(self.d)
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def __exit__(self, type_, value, traceback):
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os.chdir(self.cwd)
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