97 lines
3 KiB
Python
97 lines
3 KiB
Python
#!/usr/bin/env python3
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from __future__ import unicode_literals
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import io
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import optparse
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import os.path
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import re
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ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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README_FILE = os.path.join(ROOT_DIR, 'README.md')
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PREFIX = r'''%yt-dlp(1)
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# NAME
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yt\-dlp \- A youtube-dl fork with additional features and patches
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# SYNOPSIS
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**yt-dlp** \[OPTIONS\] URL [URL...]
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# DESCRIPTION
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'''
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def main():
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parser = optparse.OptionParser(usage='%prog OUTFILE.md')
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options, args = parser.parse_args()
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if len(args) != 1:
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parser.error('Expected an output filename')
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outfile, = args
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with io.open(README_FILE, encoding='utf-8') as f:
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readme = f.read()
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readme = filter_excluded_sections(readme)
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readme = move_sections(readme)
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readme = filter_options(readme)
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with io.open(outfile, 'w', encoding='utf-8') as outf:
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outf.write(PREFIX + readme)
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def filter_excluded_sections(readme):
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EXCLUDED_SECTION_BEGIN_STRING = re.escape('<!-- MANPAGE: BEGIN EXCLUDED SECTION -->')
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EXCLUDED_SECTION_END_STRING = re.escape('<!-- MANPAGE: END EXCLUDED SECTION -->')
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return re.sub(
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rf'(?s){EXCLUDED_SECTION_BEGIN_STRING}.+?{EXCLUDED_SECTION_END_STRING}\n',
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'', readme)
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def move_sections(readme):
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MOVE_TAG_TEMPLATE = '<!-- MANPAGE: MOVE "%s" SECTION HERE -->'
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sections = re.findall(rf'(?m)^{re.escape(MOVE_TAG_TEMPLATE) % "(.+)"}$', readme)
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for section_name in sections:
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move_tag = MOVE_TAG_TEMPLATE % section_name
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if readme.count(move_tag) > 1:
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raise Exception(f'There is more than one occurrence of "{move_tag}". This is unexpected')
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sections = re.findall(rf'(?sm)(^# {re.escape(section_name)}.+?)(?=^# )', readme)
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if len(sections) < 1:
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raise Exception(f'The section {section_name} does not exist')
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elif len(sections) > 1:
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raise Exception(f'There are multiple occurrences of section {section_name}, this is unhandled')
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readme = readme.replace(sections[0], '', 1).replace(move_tag, sections[0], 1)
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return readme
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def filter_options(readme):
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section = re.search(r'(?sm)^# USAGE AND OPTIONS\n.+?(?=^# )', readme).group(0)
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options = '# OPTIONS\n'
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for line in section.split('\n')[1:]:
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if line.lstrip().startswith('-'):
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split = re.split(r'\s{2,}', line.lstrip())
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# Description string may start with `-` as well. If there is
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# only one piece then it's a description bit not an option.
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if len(split) > 1:
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option, description = split
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split_option = option.split(' ')
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if not split_option[-1].startswith('-'): # metavar
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option = ' '.join(split_option[:-1] + [f'*{split_option[-1]}*'])
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# Pandoc's definition_lists. See http://pandoc.org/README.html
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options += f'\n{option}\n: {description}\n'
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continue
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options += line.lstrip() + '\n'
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return readme.replace(section, options, 1)
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if __name__ == '__main__':
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main()
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