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58dbb4a4b0
(cherry picked from commite6572e8f98) Also includes: * gh-111201: Use calc_complete_screen after bracketed paste in PyREPL (GH-119432) (cherry picked from commit14b063cbf1) Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com> Co-authored-by: Łukasz Langa <lukasz@langa.pl> Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
22 lines
506 B
Python
22 lines
506 B
Python
import re
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import unicodedata
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import functools
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ANSI_ESCAPE_SEQUENCE = re.compile(r"\x1b\[[ -@]*[A-~]")
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@functools.cache
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def str_width(c: str) -> int:
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if ord(c) < 128:
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return 1
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w = unicodedata.east_asian_width(c)
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if w in ('N', 'Na', 'H', 'A'):
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return 1
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return 2
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def wlen(s: str) -> int:
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length = sum(str_width(i) for i in s)
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# remove lengths of any escape sequences
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sequence = ANSI_ESCAPE_SEQUENCE.findall(s)
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return length - sum(len(i) for i in sequence)
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