forked from s434650/CatOrNot
70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
"""
|
||
|
|
markupsafe._native
|
||
|
|
~~~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
Native Python implementation used when the C module is not compiled.
|
||
|
|
|
||
|
|
:copyright: © 2010 by the Pallets team.
|
||
|
|
:license: BSD, see LICENSE for more details.
|
||
|
|
"""
|
||
|
|
from . import Markup
|
||
|
|
from ._compat import text_type
|
||
|
|
|
||
|
|
|
||
|
|
def escape(s):
|
||
|
|
"""Replace the characters ``&``, ``<``, ``>``, ``'``, and ``"`` in
|
||
|
|
the string with HTML-safe sequences. Use this if you need to display
|
||
|
|
text that might contain such characters in HTML.
|
||
|
|
|
||
|
|
If the object has an ``__html__`` method, it is called and the
|
||
|
|
return value is assumed to already be safe for HTML.
|
||
|
|
|
||
|
|
:param s: An object to be converted to a string and escaped.
|
||
|
|
:return: A :class:`Markup` string with the escaped text.
|
||
|
|
"""
|
||
|
|
if hasattr(s, "__html__"):
|
||
|
|
return Markup(s.__html__())
|
||
|
|
return Markup(
|
||
|
|
text_type(s)
|
||
|
|
.replace("&", "&")
|
||
|
|
.replace(">", ">")
|
||
|
|
.replace("<", "<")
|
||
|
|
.replace("'", "'")
|
||
|
|
.replace('"', """)
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def escape_silent(s):
|
||
|
|
"""Like :func:`escape` but treats ``None`` as the empty string.
|
||
|
|
Useful with optional values, as otherwise you get the string
|
||
|
|
``'None'`` when the value is ``None``.
|
||
|
|
|
||
|
|
>>> escape(None)
|
||
|
|
Markup('None')
|
||
|
|
>>> escape_silent(None)
|
||
|
|
Markup('')
|
||
|
|
"""
|
||
|
|
if s is None:
|
||
|
|
return Markup()
|
||
|
|
return escape(s)
|
||
|
|
|
||
|
|
|
||
|
|
def soft_unicode(s):
|
||
|
|
"""Convert an object to a string if it isn't already. This preserves
|
||
|
|
a :class:`Markup` string rather than converting it back to a basic
|
||
|
|
string, so it will still be marked as safe and won't be escaped
|
||
|
|
again.
|
||
|
|
|
||
|
|
>>> value = escape('<User 1>')
|
||
|
|
>>> value
|
||
|
|
Markup('<User 1>')
|
||
|
|
>>> escape(str(value))
|
||
|
|
Markup('&lt;User 1&gt;')
|
||
|
|
>>> escape(soft_unicode(value))
|
||
|
|
Markup('<User 1>')
|
||
|
|
"""
|
||
|
|
if not isinstance(s, text_type):
|
||
|
|
s = text_type(s)
|
||
|
|
return s
|