sphinx/sphinx/util/display.py

100 lines
3.1 KiB
Python

from __future__ import annotations
import functools
from sphinx._cli.util.colour import terminal_supports_colour
from sphinx.locale import __
from sphinx.util import logging
from sphinx.util.console import bold
if False:
from collections.abc import Callable, Iterable, Iterator
from types import TracebackType
from typing import Any, ParamSpec, TypeVar
T = TypeVar('T')
P = ParamSpec('P')
R = TypeVar('R')
logger = logging.getLogger(__name__)
def display_chunk(chunk: Any) -> str:
if isinstance(chunk, list | tuple):
if len(chunk) == 1:
return str(chunk[0])
return f'{chunk[0]} .. {chunk[-1]}'
return str(chunk)
def status_iterator(
iterable: Iterable[T],
summary: str,
color: str = 'darkgreen',
length: int = 0,
verbosity: int = 0,
stringify_func: Callable[[Any], str] = display_chunk,
) -> Iterator[T]:
# printing on a single line requires ANSI control sequences
single_line = verbosity < 1 and terminal_supports_colour()
bold_summary = bold(summary)
if length == 0:
logger.info(bold_summary, nonl=True)
for item in iterable:
logger.info('%s ', stringify_func(item), nonl=True, color=color)
yield item
else:
for i, item in enumerate(iterable, start=1):
if single_line:
# clear the entire line ('Erase in Line')
logger.info('\x1b[2K', nonl=True)
logger.info(f'{bold_summary}[{i / length: >4.0%}] ', nonl=True) # NoQA: G004
# Emit the string representation of ``item``
logger.info(stringify_func(item), nonl=True, color=color)
# If in single-line mode, emit a carriage return to move the cursor
# to the start of the line.
# If not, emit a newline to move the cursor to the next line.
logger.info('\r' * single_line, nonl=single_line)
yield item
logger.info('')
class SkipProgressMessage(Exception):
pass
class progress_message:
def __init__(self, message: str, *, nonl: bool = True) -> None:
self.message = message
self.nonl = nonl
def __enter__(self) -> None:
logger.info(bold(self.message + '... '), nonl=self.nonl)
def __exit__(
self,
typ: type[BaseException] | None,
val: BaseException | None,
tb: TracebackType | None,
) -> bool:
prefix = '' if self.nonl else bold(self.message + ': ')
if isinstance(val, SkipProgressMessage):
logger.info(prefix + __('skipped')) # NoQA: G003
if val.args:
logger.info(*val.args)
return True
elif val:
logger.info(prefix + __('failed')) # NoQA: G003
else:
logger.info(prefix + __('done')) # NoQA: G003
return False
def __call__(self, f: Callable[P, R]) -> Callable[P, R]:
@functools.wraps(f)
def wrapper(*args: P.args, **kwargs: P.kwargs) -> R: # type: ignore[return]
with self:
return f(*args, **kwargs)
return wrapper