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80 lines
2.1 KiB
Python
80 lines
2.1 KiB
Python
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'''%YOUTUBE-DL(1)
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# NAME
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youtube\-dl \- download videos from youtube.com or other video platforms
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# SYNOPSIS
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**youtube-dl** \[OPTIONS\] URL [URL...]
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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 = re.sub(r'(?s)^.*?(?=# DESCRIPTION)', '', readme)
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readme = re.sub(r'\s+youtube-dl \[OPTIONS\] URL \[URL\.\.\.\]', '', readme)
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readme = PREFIX + 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(readme)
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def filter_options(readme):
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ret = ''
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in_options = False
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for line in readme.split('\n'):
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if line.startswith('# '):
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if line[2:].startswith('OPTIONS'):
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in_options = True
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else:
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in_options = False
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if in_options:
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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] + ['*%s*' % split_option[-1]])
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# Pandoc's definition_lists. See http://pandoc.org/README.html
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# for more information.
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ret += '\n%s\n: %s\n' % (option, description)
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continue
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ret += line.lstrip() + '\n'
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else:
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ret += line + '\n'
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return ret
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if __name__ == '__main__':
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main()
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