48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
#!/usr/bin/env python
|
|
# vim:fileencoding=utf-8
|
|
# License: GPLv3 Copyright: 2020, Kovid Goyal <kovid at kovidgoyal.net>
|
|
|
|
import sys
|
|
from contextlib import suppress
|
|
from typing import Tuple
|
|
|
|
from .operations import raw_mode, set_cursor_visible
|
|
|
|
|
|
def get_key_press(allowed: str, default: str) -> str:
|
|
response = default
|
|
with raw_mode():
|
|
print(set_cursor_visible(False), end='', flush=True)
|
|
try:
|
|
while True:
|
|
q = sys.stdin.buffer.read(1)
|
|
if q:
|
|
if q in b'\x1b\x03':
|
|
break
|
|
with suppress(Exception):
|
|
response = q.decode('utf-8').lower()
|
|
if response in allowed:
|
|
break
|
|
except (KeyboardInterrupt, EOFError):
|
|
pass
|
|
finally:
|
|
print(set_cursor_visible(True), end='', flush=True)
|
|
return response
|
|
|
|
|
|
def human_size(
|
|
size: int, sep: str = ' ',
|
|
max_num_of_decimals: int = 2,
|
|
unit_list: Tuple[str, ...] = ('B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB')
|
|
) -> str:
|
|
""" Convert a size in bytes into a human readable form """
|
|
if size < 2:
|
|
return f'{size}{sep}{unit_list[0]}'
|
|
from math import log
|
|
exponent = min(int(log(size, 1024)), len(unit_list) - 1)
|
|
ans = str(size / 1024**exponent)
|
|
pos = ans.find('.')
|
|
if pos > -1:
|
|
ans = ans[:pos + max_num_of_decimals + 1]
|
|
return ans.rstrip('0').rstrip('.') + sep + unit_list[exponent]
|