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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2026-02-10 03:50
__init__.py	925 B	-rw-r--r--	2026-01-10 05:19
__main__.py	422 B	-rw-r--r--	2026-01-10 05:19
_minimal_curses.py	1.8 KB	-rw-r--r--	2026-01-10 05:19
_threading_handler.py	2.12 KB	-rw-r--r--	2026-01-10 05:19
base_eventqueue.py	3.75 KB	-rw-r--r--	2026-01-10 05:19
commands.py	12.01 KB	-rw-r--r--	2026-01-10 05:19
completing_reader.py	9.81 KB	-rw-r--r--	2026-01-10 05:19
console.py	6.71 KB	-rw-r--r--	2026-01-10 05:19
curses.py	1.21 KB	-rw-r--r--	2026-01-10 05:19
fancy_termios.py	2.51 KB	-rw-r--r--	2026-01-10 05:19
historical_reader.py	12.93 KB	-rw-r--r--	2026-01-10 05:19
input.py	3.69 KB	-rw-r--r--	2026-01-10 05:19
keymap.py	6.31 KB	-rw-r--r--	2026-01-10 05:19
main.py	1.89 KB	-rw-r--r--	2026-01-10 05:19
mypy.ini	870 B	-rw-r--r--	2025-12-05 11:06
pager.py	5.68 KB	-rw-r--r--	2026-01-10 05:19
reader.py	27.06 KB	-rw-r--r--	2026-01-10 05:19
readline.py	19.75 KB	-rw-r--r--	2026-01-10 05:19
simple_interact.py	5.66 KB	-rw-r--r--	2026-01-10 05:19
trace.py	433 B	-rw-r--r--	2026-01-10 05:19
types.py	354 B	-rw-r--r--	2026-01-10 05:19
unix_console.py	26.09 KB	-rw-r--r--	2026-01-10 05:19
unix_eventqueue.py	2.46 KB	-rw-r--r--	2026-01-10 05:19
utils.py	2.39 KB	-rw-r--r--	2026-01-10 05:19
windows_console.py	21.11 KB	-rw-r--r--	2026-01-10 05:19
windows_eventqueue.py	991 B	-rw-r--r--	2026-01-10 05:19

Rename

import re
import unicodedata
import functools

from .types import CharBuffer, CharWidths
from .trace import trace

ANSI_ESCAPE_SEQUENCE = re.compile(r"\x1b\[[ -@]*[A-~]")
ZERO_WIDTH_BRACKET = re.compile(r"\x01.*?\x02")
ZERO_WIDTH_TRANS = str.maketrans({"\x01": "", "\x02": ""})

@functools.cache
def str_width(c: str) -> int:
    if ord(c) < 128:
        return 1
    # gh-139246 for zero-width joiner and combining characters
    if unicodedata.combining(c):
        return 0
    category = unicodedata.category(c)
    if category == "Cf" and c != "\u00ad":
        return 0
    w = unicodedata.east_asian_width(c)
    if w in ("N", "Na", "H", "A"):
        return 1
    return 2

def wlen(s: str) -> int:
    if len(s) == 1 and s != "\x1a":
        return str_width(s)
    length = sum(str_width(i) for i in s)
    # remove lengths of any escape sequences
    sequence = ANSI_ESCAPE_SEQUENCE.findall(s)
    ctrl_z_cnt = s.count("\x1a")
    return length - sum(len(i) for i in sequence) + ctrl_z_cnt

def unbracket(s: str, including_content: bool = False) -> str:
    r"""Return `s` with \001 and \002 characters removed.

If `including_content` is True, content between \001 and \002 is also
    stripped.
    """
    if including_content:
        return ZERO_WIDTH_BRACKET.sub("", s)
    return s.translate(ZERO_WIDTH_TRANS)

def disp_str(buffer: str) -> tuple[CharBuffer, CharWidths]:
    r"""Decompose the input buffer into a printable variant.

Returns a tuple of two lists:
    - the first list is the input buffer, character by character;
    - the second list is the visible width of each character in the input
      buffer.

Examples:
    >>> utils.disp_str("a = 9")
    (['a', ' ', '=', ' ', '9'], [1, 1, 1, 1, 1])
    """
    chars: CharBuffer = []
    char_widths: CharWidths = []

if not buffer:
        return chars, char_widths

for c in buffer:
        if c == "\x1a":  # CTRL-Z on Windows
            chars.append(c)
            char_widths.append(2)
        elif ord(c) < 128:
            chars.append(c)
            char_widths.append(1)
        elif unicodedata.category(c).startswith("C"):
            c = r"\u%04x" % ord(c)
            chars.append(c)
            char_widths.append(len(c))
        else:
            chars.append(c)
            char_widths.append(str_width(c))
    trace("disp_str({buffer}) = {s}, {b}", buffer=repr(buffer), s=chars, b=char_widths)
    return chars, char_widths