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#!/usr/bin/env python3
def parse_size(s):
if s is None:
return s
s = s.lower()
SUFFIXES = {'k': 1e3, 'm': 1e6, 'g': 1e9}
if s[-1] in SUFFIXES:
return int(int(s[:-1]) * SUFFIXES[s[-1]])
return int(s)
def hexdump(data, byte_per_line=64):
for i in range(0, len(data), byte_per_line):
out = data[i:i+byte_per_line]
print(' '.join(f'{out[k]:02x}' for k in range(len(out)))) # use len(out) to handle partial lines
if __name__ == '__main__':
from itertools import product
import os
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('cmd')
parser.add_argument('-l', '--length', default='1M', help='Generate [length} byte test vector. Only applicable to random.')
parser.add_argument('-s', '--syncfreq', default=None, help='Emit comma every [syncfreq] bytes. Default: don\'t emit any commas. Only applicable to random.')
args = parser.parse_args()
length = parse_size(args.length)
syncfreq = parse_size(args.syncfreq)
if args.cmd == 'exhaustive_separated':
for i, j, k in product(range(256), range(256), range(256)):
print(f'K.28.1 {i:02x} {j:02x} {k:02x}')
elif args.cmd == 'exhaustive_block':
print('K.28.1')
for i, j, k in product(range(256), range(256), range(256)):
print(f'{i:02x} {j:02x} {k:02x}')
elif args.cmd == 'random':
for chunk in range(0, length, syncfreq):
print('K.28.1')
hexdump(os.urandom(min(length-chunk, syncfreq)))
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