new ip
This commit is contained in:
Sohel
408
plotter-app/venv/lib/python3.8/site-packages/markdown/util.py
Normal file
408
plotter-app/venv/lib/python3.8/site-packages/markdown/util.py
Normal file
@@ -0,0 +1,408 @@
|
||||
# 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).
|
||||
|
||||
"""
|
||||
This module contains various contacts, classes and functions which get referenced and used
|
||||
throughout the code base.
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import re
|
||||
import sys
|
||||
import warnings
|
||||
from functools import wraps, lru_cache
|
||||
from itertools import count
|
||||
from typing import TYPE_CHECKING, Generic, Iterator, NamedTuple, TypeVar, TypedDict, overload
|
||||
|
||||
if TYPE_CHECKING: # pragma: no cover
|
||||
from markdown import Markdown
|
||||
import xml.etree.ElementTree as etree
|
||||
|
||||
_T = TypeVar('_T')
|
||||
|
||||
|
||||
"""
|
||||
Constants you might want to modify
|
||||
-----------------------------------------------------------------------------
|
||||
"""
|
||||
|
||||
|
||||
BLOCK_LEVEL_ELEMENTS: list[str] = [
|
||||
# Elements which are invalid to wrap in a `<p>` tag.
|
||||
# See https://w3c.github.io/html/grouping-content.html#the-p-element
|
||||
'address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl',
|
||||
'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3',
|
||||
'h4', 'h5', 'h6', 'header', 'hgroup', 'hr', 'main', 'menu', 'nav', 'ol',
|
||||
'p', 'pre', 'section', 'table', 'ul',
|
||||
# Other elements which Markdown should not be mucking up the contents of.
|
||||
'canvas', 'colgroup', 'dd', 'body', 'dt', 'group', 'html', 'iframe', 'li', 'legend',
|
||||
'math', 'map', 'noscript', 'output', 'object', 'option', 'progress', 'script',
|
||||
'style', 'summary', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'tr', 'video'
|
||||
]
|
||||
"""
|
||||
List of HTML tags which get treated as block-level elements. Same as the `block_level_elements`
|
||||
attribute of the [`Markdown`][markdown.Markdown] class. Generally one should use the
|
||||
attribute on the class. This remains for compatibility with older extensions.
|
||||
"""
|
||||
|
||||
# Placeholders
|
||||
STX = '\u0002'
|
||||
""" "Start of Text" marker for placeholder templates. """
|
||||
ETX = '\u0003'
|
||||
""" "End of Text" marker for placeholder templates. """
|
||||
INLINE_PLACEHOLDER_PREFIX = STX+"klzzwxh:"
|
||||
""" Prefix for inline placeholder template. """
|
||||
INLINE_PLACEHOLDER = INLINE_PLACEHOLDER_PREFIX + "%s" + ETX
|
||||
""" Placeholder template for stashed inline text. """
|
||||
INLINE_PLACEHOLDER_RE = re.compile(INLINE_PLACEHOLDER % r'([0-9]+)')
|
||||
""" Regular Expression which matches inline placeholders. """
|
||||
AMP_SUBSTITUTE = STX+"amp"+ETX
|
||||
""" Placeholder template for HTML entities. """
|
||||
HTML_PLACEHOLDER = STX + "wzxhzdk:%s" + ETX
|
||||
""" Placeholder template for raw HTML. """
|
||||
HTML_PLACEHOLDER_RE = re.compile(HTML_PLACEHOLDER % r'([0-9]+)')
|
||||
""" Regular expression which matches HTML placeholders. """
|
||||
TAG_PLACEHOLDER = STX + "hzzhzkh:%s" + ETX
|
||||
""" Placeholder template for tags. """
|
||||
|
||||
|
||||
# Constants you probably do not need to change
|
||||
# -----------------------------------------------------------------------------
|
||||
|
||||
RTL_BIDI_RANGES = (
|
||||
('\u0590', '\u07FF'),
|
||||
# Hebrew (0590-05FF), Arabic (0600-06FF),
|
||||
# Syriac (0700-074F), Arabic supplement (0750-077F),
|
||||
# Thaana (0780-07BF), Nko (07C0-07FF).
|
||||
('\u2D30', '\u2D7F') # Tifinagh
|
||||
)
|
||||
|
||||
|
||||
# AUXILIARY GLOBAL FUNCTIONS
|
||||
# =============================================================================
|
||||
|
||||
|
||||
@lru_cache(maxsize=None)
|
||||
def get_installed_extensions():
|
||||
""" Return all entry_points in the `markdown.extensions` group. """
|
||||
if sys.version_info >= (3, 10):
|
||||
from importlib import metadata
|
||||
else: # `<PY310` use backport
|
||||
import importlib_metadata as metadata
|
||||
# Only load extension entry_points once.
|
||||
return metadata.entry_points(group='markdown.extensions')
|
||||
|
||||
|
||||
def deprecated(message: str, stacklevel: int = 2):
|
||||
"""
|
||||
Raise a [`DeprecationWarning`][] when wrapped function/method is called.
|
||||
|
||||
Usage:
|
||||
|
||||
```python
|
||||
@deprecated("This method will be removed in version X; use Y instead.")
|
||||
def some_method():
|
||||
pass
|
||||
```
|
||||
"""
|
||||
def wrapper(func):
|
||||
@wraps(func)
|
||||
def deprecated_func(*args, **kwargs):
|
||||
warnings.warn(
|
||||
f"'{func.__name__}' is deprecated. {message}",
|
||||
category=DeprecationWarning,
|
||||
stacklevel=stacklevel
|
||||
)
|
||||
return func(*args, **kwargs)
|
||||
return deprecated_func
|
||||
return wrapper
|
||||
|
||||
|
||||
def parseBoolValue(value: str | None, fail_on_errors: bool = True, preserve_none: bool = False) -> bool | None:
|
||||
"""Parses a string representing a boolean value. If parsing was successful,
|
||||
returns `True` or `False`. If `preserve_none=True`, returns `True`, `False`,
|
||||
or `None`. If parsing was not successful, raises `ValueError`, or, if
|
||||
`fail_on_errors=False`, returns `None`."""
|
||||
if not isinstance(value, str):
|
||||
if preserve_none and value is None:
|
||||
return value
|
||||
return bool(value)
|
||||
elif preserve_none and value.lower() == 'none':
|
||||
return None
|
||||
elif value.lower() in ('true', 'yes', 'y', 'on', '1'):
|
||||
return True
|
||||
elif value.lower() in ('false', 'no', 'n', 'off', '0', 'none'):
|
||||
return False
|
||||
elif fail_on_errors:
|
||||
raise ValueError('Cannot parse bool value: %r' % value)
|
||||
|
||||
|
||||
def code_escape(text: str) -> str:
|
||||
"""HTML escape a string of code."""
|
||||
if "&" in text:
|
||||
text = text.replace("&", "&")
|
||||
if "<" in text:
|
||||
text = text.replace("<", "<")
|
||||
if ">" in text:
|
||||
text = text.replace(">", ">")
|
||||
return text
|
||||
|
||||
|
||||
def _get_stack_depth(size: int = 2) -> int:
|
||||
"""Get current stack depth, performantly.
|
||||
"""
|
||||
frame = sys._getframe(size)
|
||||
|
||||
for size in count(size):
|
||||
frame = frame.f_back
|
||||
if not frame:
|
||||
return size
|
||||
|
||||
|
||||
def nearing_recursion_limit() -> bool:
|
||||
"""Return true if current stack depth is within 100 of maximum limit."""
|
||||
return sys.getrecursionlimit() - _get_stack_depth() < 100
|
||||
|
||||
|
||||
# MISC AUXILIARY CLASSES
|
||||
# =============================================================================
|
||||
|
||||
|
||||
class AtomicString(str):
|
||||
"""A string which should not be further processed."""
|
||||
pass
|
||||
|
||||
|
||||
class Processor:
|
||||
""" The base class for all processors.
|
||||
|
||||
Attributes:
|
||||
Processor.md: The `Markdown` instance passed in an initialization.
|
||||
|
||||
Arguments:
|
||||
md: The `Markdown` instance this processor is a part of.
|
||||
|
||||
"""
|
||||
def __init__(self, md: Markdown | None = None):
|
||||
self.md = md
|
||||
|
||||
|
||||
if TYPE_CHECKING: # pragma: no cover
|
||||
class TagData(TypedDict):
|
||||
tag: str
|
||||
attrs: dict[str, str]
|
||||
left_index: int
|
||||
right_index: int
|
||||
|
||||
|
||||
class HtmlStash:
|
||||
"""
|
||||
This class is used for stashing HTML objects that we extract
|
||||
in the beginning and replace with place-holders.
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
""" Create an `HtmlStash`. """
|
||||
self.html_counter = 0 # for counting inline html segments
|
||||
self.rawHtmlBlocks: list[str | etree.Element] = []
|
||||
self.tag_counter = 0
|
||||
self.tag_data: list[TagData] = [] # list of dictionaries in the order tags appear
|
||||
|
||||
def store(self, html: str | etree.Element) -> str:
|
||||
"""
|
||||
Saves an HTML segment for later reinsertion. Returns a
|
||||
placeholder string that needs to be inserted into the
|
||||
document.
|
||||
|
||||
Keyword arguments:
|
||||
html: An html segment.
|
||||
|
||||
Returns:
|
||||
A placeholder string.
|
||||
|
||||
"""
|
||||
self.rawHtmlBlocks.append(html)
|
||||
placeholder = self.get_placeholder(self.html_counter)
|
||||
self.html_counter += 1
|
||||
return placeholder
|
||||
|
||||
def reset(self) -> None:
|
||||
""" Clear the stash. """
|
||||
self.html_counter = 0
|
||||
self.rawHtmlBlocks = []
|
||||
|
||||
def get_placeholder(self, key: int) -> str:
|
||||
return HTML_PLACEHOLDER % key
|
||||
|
||||
def store_tag(self, tag: str, attrs: dict[str, str], left_index: int, right_index: int) -> str:
|
||||
"""Store tag data and return a placeholder."""
|
||||
self.tag_data.append({'tag': tag, 'attrs': attrs,
|
||||
'left_index': left_index,
|
||||
'right_index': right_index})
|
||||
placeholder = TAG_PLACEHOLDER % str(self.tag_counter)
|
||||
self.tag_counter += 1 # equal to the tag's index in `self.tag_data`
|
||||
return placeholder
|
||||
|
||||
|
||||
# Used internally by `Registry` for each item in its sorted list.
|
||||
# Provides an easier to read API when editing the code later.
|
||||
# For example, `item.name` is more clear than `item[0]`.
|
||||
class _PriorityItem(NamedTuple):
|
||||
name: str
|
||||
priority: float
|
||||
|
||||
|
||||
class Registry(Generic[_T]):
|
||||
"""
|
||||
A priority sorted registry.
|
||||
|
||||
A `Registry` instance provides two public methods to alter the data of the
|
||||
registry: `register` and `deregister`. Use `register` to add items and
|
||||
`deregister` to remove items. See each method for specifics.
|
||||
|
||||
When registering an item, a "name" and a "priority" must be provided. All
|
||||
items are automatically sorted by "priority" from highest to lowest. The
|
||||
"name" is used to remove ("deregister") and get items.
|
||||
|
||||
A `Registry` instance it like a list (which maintains order) when reading
|
||||
data. You may iterate over the items, get an item and get a count (length)
|
||||
of all items. You may also check that the registry contains an item.
|
||||
|
||||
When getting an item you may use either the index of the item or the
|
||||
string-based "name". For example:
|
||||
|
||||
registry = Registry()
|
||||
registry.register(SomeItem(), 'itemname', 20)
|
||||
# Get the item by index
|
||||
item = registry[0]
|
||||
# Get the item by name
|
||||
item = registry['itemname']
|
||||
|
||||
When checking that the registry contains an item, you may use either the
|
||||
string-based "name", or a reference to the actual item. For example:
|
||||
|
||||
someitem = SomeItem()
|
||||
registry.register(someitem, 'itemname', 20)
|
||||
# Contains the name
|
||||
assert 'itemname' in registry
|
||||
# Contains the item instance
|
||||
assert someitem in registry
|
||||
|
||||
The method `get_index_for_name` is also available to obtain the index of
|
||||
an item using that item's assigned "name".
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
self._data: dict[str, _T] = {}
|
||||
self._priority: list[_PriorityItem] = []
|
||||
self._is_sorted = False
|
||||
|
||||
def __contains__(self, item: str | _T) -> bool:
|
||||
if isinstance(item, str):
|
||||
# Check if an item exists by this name.
|
||||
return item in self._data.keys()
|
||||
# Check if this instance exists.
|
||||
return item in self._data.values()
|
||||
|
||||
def __iter__(self) -> Iterator[_T]:
|
||||
self._sort()
|
||||
return iter([self._data[k] for k, p in self._priority])
|
||||
|
||||
@overload
|
||||
def __getitem__(self, key: str | int) -> _T: # pragma: no cover
|
||||
...
|
||||
|
||||
@overload
|
||||
def __getitem__(self, key: slice) -> Registry[_T]: # pragma: no cover
|
||||
...
|
||||
|
||||
def __getitem__(self, key: str | int | slice) -> _T | Registry[_T]:
|
||||
self._sort()
|
||||
if isinstance(key, slice):
|
||||
data: Registry[_T] = Registry()
|
||||
for k, p in self._priority[key]:
|
||||
data.register(self._data[k], k, p)
|
||||
return data
|
||||
if isinstance(key, int):
|
||||
return self._data[self._priority[key].name]
|
||||
return self._data[key]
|
||||
|
||||
def __len__(self) -> int:
|
||||
return len(self._priority)
|
||||
|
||||
def __repr__(self):
|
||||
return '<{}({})>'.format(self.__class__.__name__, list(self))
|
||||
|
||||
def get_index_for_name(self, name: str) -> int:
|
||||
"""
|
||||
Return the index of the given name.
|
||||
"""
|
||||
if name in self:
|
||||
self._sort()
|
||||
return self._priority.index(
|
||||
[x for x in self._priority if x.name == name][0]
|
||||
)
|
||||
raise ValueError('No item named "{}" exists.'.format(name))
|
||||
|
||||
def register(self, item: _T, name: str, priority: float) -> None:
|
||||
"""
|
||||
Add an item to the registry with the given name and priority.
|
||||
|
||||
Arguments:
|
||||
item: The item being registered.
|
||||
name: A string used to reference the item.
|
||||
priority: An integer or float used to sort against all items.
|
||||
|
||||
If an item is registered with a "name" which already exists, the
|
||||
existing item is replaced with the new item. Treat carefully as the
|
||||
old item is lost with no way to recover it. The new item will be
|
||||
sorted according to its priority and will **not** retain the position
|
||||
of the old item.
|
||||
"""
|
||||
if name in self:
|
||||
# Remove existing item of same name first
|
||||
self.deregister(name)
|
||||
self._is_sorted = False
|
||||
self._data[name] = item
|
||||
self._priority.append(_PriorityItem(name, priority))
|
||||
|
||||
def deregister(self, name: str, strict: bool = True) -> None:
|
||||
"""
|
||||
Remove an item from the registry.
|
||||
|
||||
Set `strict=False` to fail silently. Otherwise a [`ValueError`][] is raised for an unknown `name`.
|
||||
"""
|
||||
try:
|
||||
index = self.get_index_for_name(name)
|
||||
del self._priority[index]
|
||||
del self._data[name]
|
||||
except ValueError:
|
||||
if strict:
|
||||
raise
|
||||
|
||||
def _sort(self) -> None:
|
||||
"""
|
||||
Sort the registry by priority from highest to lowest.
|
||||
|
||||
This method is called internally and should never be explicitly called.
|
||||
"""
|
||||
if not self._is_sorted:
|
||||
self._priority.sort(key=lambda item: item.priority, reverse=True)
|
||||
self._is_sorted = True
|
||||
Reference in New Issue
Block a user