97 lines
3.5 KiB
Python
97 lines
3.5 KiB
Python
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#!/usr/bin/env python3
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# :Copyright: © 2020, 2022 Günter Milde.
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# :License: Released under the terms of the `2-Clause BSD license`_, in short:
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#
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# Copying and distribution of this file, with or without modification,
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# are permitted in any medium without royalty provided the copyright
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# notice and this notice are preserved.
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# This file is offered as-is, without any warranty.
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#
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# .. _2-Clause BSD license: https://opensource.org/licenses/BSD-2-Clause
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#
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# Revision: $Revision: 9107 $
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# Date: $Date: 2022-07-06 15:59:57 +0200 (Mi, 06. Jul 2022) $
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"""Generic command line interface for the `docutils` package.
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See also
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https://docs.python.org/3/library/__main__.html#main-py-in-python-packages
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"""
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import argparse
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import locale
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import sys
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import docutils
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from docutils.core import Publisher, publish_cmdline, default_description
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class CliSettingsSpec(docutils.SettingsSpec):
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"""Runtime settings & command-line options for the generic CLI.
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Configurable reader, parser, and writer components.
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The "--writer" default will change to 'html' in Docutils 2.0
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when 'html' becomes an alias for the current value 'html5'.
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"""
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settings_spec = (
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'Docutils Application Options',
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'Reader, writer, and parser settings influence the available options. '
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' Example: use `--help --writer=latex` to see LaTeX writer options. ',
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# options: ('help text', [<option strings>], {<keyword arguments>})
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(('Reader name (currently: "%default").',
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['--reader'], {'default': 'standalone', 'metavar': '<reader>'}),
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('Parser name (currently: "%default").',
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['--parser'], {'default': 'rst', 'metavar': '<parser>'}),
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('Writer name (currently: "%default").',
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['--writer'], {'default': 'html5', 'metavar': '<writer>'}),
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)
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)
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config_section = 'docutils application'
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config_section_dependencies = ('docutils-cli application', # back-compat
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'applications')
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def main():
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"""Generic command line interface for the Docutils Publisher.
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"""
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locale.setlocale(locale.LC_ALL, '')
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description = ('Convert documents into useful formats. '
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+ default_description)
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# Update component selection from config file(s)
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components = Publisher().get_settings(settings_spec=CliSettingsSpec)
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# Update component selection from command-line
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argparser = argparse.ArgumentParser(add_help=False, allow_abbrev=False)
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argparser.add_argument('--reader', default=components.reader)
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argparser.add_argument('--parser', default=components.parser)
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argparser.add_argument('--writer', default=components.writer)
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# other options are parsed in a second pass via `publish_cmdline()`
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(args, remainder) = argparser.parse_known_args()
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# Ensure the current component selections are shown in help:
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CliSettingsSpec.settings_default_overrides = args.__dict__
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try:
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publish_cmdline(reader_name=args.reader,
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parser_name=args.parser,
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writer_name=args.writer,
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settings_spec=CliSettingsSpec,
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description=description,
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argv=remainder)
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except ImportError as error:
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print('%s.' % error, file=sys.stderr)
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if '--traceback' in remainder:
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raise
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else:
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print('Use "--traceback" to show details.')
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if __name__ == '__main__':
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if sys.argv[0].endswith('__main__.py'):
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# fix "usage" message
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sys.argv[0] = '%s -m docutils' % sys.executable
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main()
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