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1 file changed, 60 insertions
add_bytes.py(file created)
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| 1 | + | #!/usr/bin/env python3 | |
| 2 | + | ||
| 3 | + | import argparse | |
| 4 | + | import sys | |
| 5 | + | ||
| 6 | + | SYMBOLS = ('kilo', 'mega', 'giga', 'tera', 'peta', 'exa', 'zetta', 'iotta') | |
| 7 | + | ||
| 8 | + | def get_bytes(data_queue): | |
| 9 | + | """Parses list of strings, ints or floats representing data amounts (e.g 1MB, 2mb, 3M) to a list of bytes. Parses all types listed in SYMBOLS. | |
| 10 | + | ||
| 11 | + | >>> add_bytes([500, "1.1mb", "23KB"]) | |
| 12 | + | [500.0, 1153433.6, 23552.0] | |
| 13 | + | """ | |
| 14 | + | output = [] | |
| 15 | + | for item in data_queue: | |
| 16 | + | if type(item) in (int, float): | |
| 17 | + | output.append(float(item)) | |
| 18 | + | continue | |
| 19 | + | if item[-1] in "bB": # we don't need to worry about bytes | |
| 20 | + | item = item[:-1] | |
| 21 | + | item = item.lower().strip() # for better matching | |
| 22 | + | try: | |
| 23 | + | output.append(float(item)) | |
| 24 | + | continue | |
| 25 | + | except ValueError: | |
| 26 | + | pass | |
| 27 | + | power = 0 # so `if not power` works | |
| 28 | + | for x, symbol in enumerate(SYMBOLS): | |
| 29 | + | if symbol[0] in item: | |
| 30 | + | power = x + 1 | |
| 31 | + | if not power: # string was not a match | |
| 32 | + | continue | |
| 33 | + | item = float("".join(c for c in item if c in "0123456789.")) | |
| 34 | + | output.append(item * (1024 ** power)) | |
| 35 | + | return output | |
| 36 | + | ||
| 37 | + | def parse_bytes(byte_list, precision=2): | |
| 38 | + | """ Parses list of ints or floats into summed 'human' amount rounded to 2dp. | |
| 39 | + | ||
| 40 | + | >>> parse_bytes([500, 1153433.6, 23552]) | |
| 41 | + | "1.12MB" | |
| 42 | + | """ | |
| 43 | + | total = sum(byte_list) | |
| 44 | + | i = -1 | |
| 45 | + | while total > 1024: | |
| 46 | + | i += 1 | |
| 47 | + | total = total / 1024 | |
| 48 | + | return ("{:.%sf}{}B" % precision).format(total, SYMBOLS[i][0].upper()) | |
| 49 | + | ||
| 50 | + | def main(): | |
| 51 | + | parser = argparse.ArgumentParser() | |
| 52 | + | parser.add_argument("amounts", help="Array of data amounts to be processed", nargs="+") | |
| 53 | + | parser.add_argument("-p", "--precision", help="Number of decimal places in the output") | |
| 54 | + | args = parser.parse_args() | |
| 55 | + | byte_list = get_bytes(args.amounts) | |
| 56 | + | print(parse_bytes(byte_list, args.precision or 2)) | |
| 57 | + | return 0 | |
| 58 | + | ||
| 59 | + | if __name__ == "__main__": | |
| 60 | + | sys.exit(main()) | |
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