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107 lines
3.6 KiB
107 lines
3.6 KiB
"""
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Python Markdown
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A Python implementation of John Gruber's Markdown.
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Documentation: https://python-markdown.github.io/
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GitHub: https://github.com/Python-Markdown/markdown/
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PyPI: https://pypi.org/project/Markdown/
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Started by Manfred Stienstra (http://www.dwerg.net/).
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Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
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Currently maintained by Waylan Limberg (https://github.com/waylan),
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Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
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Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
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Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
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Copyright 2004 Manfred Stienstra (the original version)
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License: BSD (see LICENSE.md for details).
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"""
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import warnings
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from ..util import parseBoolValue
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class Extension:
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""" Base class for extensions to subclass. """
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# Default config -- to be overriden by a subclass
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# Must be of the following format:
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# {
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# 'key': ['value', 'description']
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# }
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# Note that Extension.setConfig will raise a KeyError
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# if a default is not set here.
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config = {}
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def __init__(self, **kwargs):
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""" Initiate Extension and set up configs. """
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self.setConfigs(kwargs)
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def getConfig(self, key, default=''):
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""" Return a setting for the given key or an empty string. """
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if key in self.config:
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return self.config[key][0]
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else:
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return default
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def getConfigs(self):
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""" Return all configs settings as a dict. """
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return {key: self.getConfig(key) for key in self.config.keys()}
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def getConfigInfo(self):
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""" Return all config descriptions as a list of tuples. """
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return [(key, self.config[key][1]) for key in self.config.keys()]
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def setConfig(self, key, value):
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""" Set a config setting for `key` with the given `value`. """
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if isinstance(self.config[key][0], bool):
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value = parseBoolValue(value)
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if self.config[key][0] is None:
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value = parseBoolValue(value, preserve_none=True)
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self.config[key][0] = value
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def setConfigs(self, items):
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""" Set multiple config settings given a dict or list of tuples. """
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if hasattr(items, 'items'):
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# it's a dict
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items = items.items()
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for key, value in items:
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self.setConfig(key, value)
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def _extendMarkdown(self, *args):
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""" Private wrapper around extendMarkdown. """
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md = args[0]
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try:
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self.extendMarkdown(md)
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except TypeError as e:
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if "missing 1 required positional argument" in str(e):
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# Must be a 2.x extension. Pass in a dumby md_globals.
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self.extendMarkdown(md, {})
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warnings.warn(
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"The 'md_globals' parameter of '{}.{}.extendMarkdown' is "
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"deprecated.".format(self.__class__.__module__, self.__class__.__name__),
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category=DeprecationWarning,
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stacklevel=2
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)
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else:
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raise
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def extendMarkdown(self, md):
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"""
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Add the various proccesors and patterns to the Markdown Instance.
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This method must be overriden by every extension.
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Keyword arguments:
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* md: The Markdown instance.
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* md_globals: Global variables in the markdown module namespace.
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"""
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raise NotImplementedError(
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'Extension "%s.%s" must define an "extendMarkdown"'
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'method.' % (self.__class__.__module__, self.__class__.__name__)
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)
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