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# Copyright (c) Meta Platforms, Inc. and affiliates.
# SPDX-License-Identifier: LGPL-2.1-or-later
import argparse
from typing import List
class MultilineHelpFormatter(argparse.HelpFormatter):
"""
argparse help formatter that supports multiple paragraphs/line blocks and
doesn't collapse consecutive whitespace.
'''
This is a paragraph, which will
be wrapped.
|This is a line block.
|It will not be wrapped.
'''
See :func:`_drgn_util.multilinewrap.multiline_wrap()` for details.
"""
def _split_lines(self, text: str, width: int) -> List[str]:
# argparse makes a point of not importing textwrap unless necessary, so
# we do the same.
from _drgn_util.multilinewrap import multiline_wrap
return multiline_wrap(text, width, indent="")
def _fill_text(self, text: str, width: int, indent: str) -> str:
from _drgn_util.multilinewrap import multiline_fill
return multiline_fill(text, width, indent=indent)
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