Albin Chaboissier
9daa296892
Some base files had to be modified to support 64-bit architecture as well as the Makefile to load 64-bit words into memory
26 lines
728 B
Python
26 lines
728 B
Python
#!/usr/bin/env python3
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import sys
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if len(sys.argv) < 3:
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print("Usage: swap_endian.py <input> <output> [word_size]")
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sys.exit(1)
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input_file = sys.argv[1]
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output_file = sys.argv[2]
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word_size = int(sys.argv[3]) if len(sys.argv) > 3 else 4 # par défaut 32 bits
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with open(input_file, "rb") as f:
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data = f.read()
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# Vérifie que la taille est multiple de la taille de mot
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if len(data) % word_size != 0:
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print("⚠️ Attention : la taille du fichier n'est pas multiple de la taille de mot")
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swapped = bytearray()
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for i in range(0, len(data), word_size):
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word = data[i:i+word_size]
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swapped.extend(word[::-1]) # inverse les octets dans chaque mot
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with open(output_file, "wb") as f:
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f.write(swapped)
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