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94 lines
2.8 KiB
Python
94 lines
2.8 KiB
Python
#!/usr/bin/env python3
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"""
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yt-dlp --help | make_readme.py
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This must be run in a console of correct width
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"""
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# Allow direct execution
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import os
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import sys
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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import functools
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import re
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from devscripts.utils import read_file, write_file
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README_FILE = 'README.md'
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OPTIONS_START = 'General Options:'
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OPTIONS_END = 'CONFIGURATION'
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EPILOG_START = 'See full documentation'
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ALLOWED_OVERSHOOT = 2
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DISABLE_PATCH = object()
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def take_section(text, start=None, end=None, *, shift=0):
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return text[
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text.index(start) + shift if start else None:
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text.index(end) + shift if end else None
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]
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def apply_patch(text, patch):
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return text if patch[0] is DISABLE_PATCH else re.sub(*patch, text)
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options = take_section(sys.stdin.read(), f'\n {OPTIONS_START}', f'\n{EPILOG_START}', shift=1)
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max_width = max(map(len, options.split('\n')))
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switch_col_width = len(re.search(r'(?m)^\s{5,}', options).group())
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delim = f'\n{" " * switch_col_width}'
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PATCHES = (
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( # Standardize `--update` message
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r'(?m)^( -U, --update\s+).+(\n \s.+)*$',
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r'\1Update this program to the latest version',
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),
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( # Headings
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r'(?m)^ (\w.+\n)( (?=\w))?',
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r'## \1'
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),
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( # Fixup `--date` formatting
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rf'(?m)( --date DATE.+({delim}[^\[]+)*)\[.+({delim}.+)*$',
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(rf'\1[now|today|yesterday][-N[day|week|month|year]].{delim}'
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f'E.g. "--date today-2weeks" downloads only{delim}'
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'videos uploaded on the same day two weeks ago'),
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),
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( # Do not split URLs
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rf'({delim[:-1]})? (?P<label>\[\S+\] )?(?P<url>https?({delim})?:({delim})?/({delim})?/(({delim})?\S+)+)\s',
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lambda mobj: ''.join((delim, mobj.group('label') or '', re.sub(r'\s+', '', mobj.group('url')), '\n'))
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),
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( # Do not split "words"
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rf'(?m)({delim}\S+)+$',
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lambda mobj: ''.join((delim, mobj.group(0).replace(delim, '')))
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),
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( # Allow overshooting last line
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rf'(?m)^(?P<prev>.+)${delim}(?P<current>.+)$(?!{delim})',
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lambda mobj: (mobj.group().replace(delim, ' ')
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if len(mobj.group()) - len(delim) + 1 <= max_width + ALLOWED_OVERSHOOT
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else mobj.group())
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),
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( # Avoid newline when a space is available b/w switch and description
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DISABLE_PATCH, # This creates issues with prepare_manpage
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r'(?m)^(\s{4}-.{%d})(%s)' % (switch_col_width - 6, delim),
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r'\1 '
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),
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( # Replace brackets with a Markdown link
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r'SponsorBlock API \((http.+)\)',
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r'[SponsorBlock API](\1)'
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),
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)
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readme = read_file(README_FILE)
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write_file(README_FILE, ''.join((
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take_section(readme, end=f'## {OPTIONS_START}'),
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functools.reduce(apply_patch, PATCHES, options),
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take_section(readme, f'# {OPTIONS_END}'),
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)))
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