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| # Python Markdown | |
| # A Python implementation of John Gruber's Markdown. | |
| # Documentation: https://python-markdown.github.io/ | |
| # GitHub: https://github.com/Python-Markdown/markdown/ | |
| # PyPI: https://pypi.org/project/Markdown/ | |
| # Started by Manfred Stienstra (http://www.dwerg.net/). | |
| # Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org). | |
| # Currently maintained by Waylan Limberg (https://github.com/waylan), | |
| # Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser). | |
| # Copyright 2007-2023 The Python Markdown Project (v. 1.7 and later) | |
| # Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b) | |
| # Copyright 2004 Manfred Stienstra (the original version) | |
| # License: BSD (see LICENSE.md for details). | |
| from __future__ import annotations | |
| import sys | |
| import optparse | |
| import codecs | |
| import warnings | |
| import markdown | |
| try: | |
| # We use `unsafe_load` because users may need to pass in actual Python | |
| # objects. As this is only available from the CLI, the user has much | |
| # worse problems if an attacker can use this as an attach vector. | |
| from yaml import unsafe_load as yaml_load | |
| except ImportError: # pragma: no cover | |
| try: | |
| # Fall back to PyYAML <5.1 | |
| from yaml import load as yaml_load | |
| except ImportError: | |
| # Fall back to JSON | |
| from json import load as yaml_load | |
| import logging | |
| from logging import DEBUG, WARNING, CRITICAL | |
| logger = logging.getLogger('MARKDOWN') | |
| def parse_options(args=None, values=None): | |
| """ | |
| Define and parse `optparse` options for command-line usage. | |
| """ | |
| usage = """%prog [options] [INPUTFILE] | |
| (STDIN is assumed if no INPUTFILE is given)""" | |
| desc = "A Python implementation of John Gruber's Markdown. " \ | |
| "https://Python-Markdown.github.io/" | |
| ver = "%%prog %s" % markdown.__version__ | |
| parser = optparse.OptionParser(usage=usage, description=desc, version=ver) | |
| parser.add_option("-f", "--file", dest="filename", default=None, | |
| help="Write output to OUTPUT_FILE. Defaults to STDOUT.", | |
| metavar="OUTPUT_FILE") | |
| parser.add_option("-e", "--encoding", dest="encoding", | |
| help="Encoding for input and output files.",) | |
| parser.add_option("-o", "--output_format", dest="output_format", | |
| default='xhtml', metavar="OUTPUT_FORMAT", | |
| help="Use output format 'xhtml' (default) or 'html'.") | |
| parser.add_option("-n", "--no_lazy_ol", dest="lazy_ol", | |
| action='store_false', default=True, | |
| help="Observe number of first item of ordered lists.") | |
| parser.add_option("-x", "--extension", action="append", dest="extensions", | |
| help="Load extension EXTENSION.", metavar="EXTENSION") | |
| parser.add_option("-c", "--extension_configs", | |
| dest="configfile", default=None, | |
| help="Read extension configurations from CONFIG_FILE. " | |
| "CONFIG_FILE must be of JSON or YAML format. YAML " | |
| "format requires that a python YAML library be " | |
| "installed. The parsed JSON or YAML must result in a " | |
| "python dictionary which would be accepted by the " | |
| "'extension_configs' keyword on the markdown.Markdown " | |
| "class. The extensions must also be loaded with the " | |
| "`--extension` option.", | |
| metavar="CONFIG_FILE") | |
| parser.add_option("-q", "--quiet", default=CRITICAL, | |
| action="store_const", const=CRITICAL+10, dest="verbose", | |
| help="Suppress all warnings.") | |
| parser.add_option("-v", "--verbose", | |
| action="store_const", const=WARNING, dest="verbose", | |
| help="Print all warnings.") | |
| parser.add_option("--noisy", | |
| action="store_const", const=DEBUG, dest="verbose", | |
| help="Print debug messages.") | |
| (options, args) = parser.parse_args(args, values) | |
| if len(args) == 0: | |
| input_file = None | |
| else: | |
| input_file = args[0] | |
| if not options.extensions: | |
| options.extensions = [] | |
| extension_configs = {} | |
| if options.configfile: | |
| with codecs.open( | |
| options.configfile, mode="r", encoding=options.encoding | |
| ) as fp: | |
| try: | |
| extension_configs = yaml_load(fp) | |
| except Exception as e: | |
| message = "Failed parsing extension config file: %s" % \ | |
| options.configfile | |
| e.args = (message,) + e.args[1:] | |
| raise | |
| opts = { | |
| 'input': input_file, | |
| 'output': options.filename, | |
| 'extensions': options.extensions, | |
| 'extension_configs': extension_configs, | |
| 'encoding': options.encoding, | |
| 'output_format': options.output_format, | |
| 'lazy_ol': options.lazy_ol | |
| } | |
| return opts, options.verbose | |
| def run(): # pragma: no cover | |
| """Run Markdown from the command line.""" | |
| # Parse options and adjust logging level if necessary | |
| options, logging_level = parse_options() | |
| if not options: | |
| sys.exit(2) | |
| logger.setLevel(logging_level) | |
| console_handler = logging.StreamHandler() | |
| logger.addHandler(console_handler) | |
| if logging_level <= WARNING: | |
| # Ensure deprecation warnings get displayed | |
| warnings.filterwarnings('default') | |
| logging.captureWarnings(True) | |
| warn_logger = logging.getLogger('py.warnings') | |
| warn_logger.addHandler(console_handler) | |
| # Run | |
| markdown.markdownFromFile(**options) | |
| if __name__ == '__main__': # pragma: no cover | |
| # Support running module as a command line command. | |
| # python -m markdown [options] [args] | |
| run() | |