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Add server version to master api
Add IsEvadedOffense to EFPenalty Fix remote log reading in not Windows
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305
Master/env_master/Lib/site-packages/markupsafe/__init__.py
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305
Master/env_master/Lib/site-packages/markupsafe/__init__.py
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# -*- coding: utf-8 -*-
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"""
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markupsafe
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~~~~~~~~~~
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Implements a Markup string.
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:copyright: (c) 2010 by Armin Ronacher.
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:license: BSD, see LICENSE for more details.
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"""
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import re
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import string
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from collections import Mapping
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from markupsafe._compat import text_type, string_types, int_types, \
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unichr, iteritems, PY2
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__version__ = "1.0"
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__all__ = ['Markup', 'soft_unicode', 'escape', 'escape_silent']
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_striptags_re = re.compile(r'(<!--.*?-->|<[^>]*>)')
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_entity_re = re.compile(r'&([^& ;]+);')
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class Markup(text_type):
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r"""Marks a string as being safe for inclusion in HTML/XML output without
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needing to be escaped. This implements the `__html__` interface a couple
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of frameworks and web applications use. :class:`Markup` is a direct
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subclass of `unicode` and provides all the methods of `unicode` just that
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it escapes arguments passed and always returns `Markup`.
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The `escape` function returns markup objects so that double escaping can't
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happen.
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The constructor of the :class:`Markup` class can be used for three
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different things: When passed an unicode object it's assumed to be safe,
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when passed an object with an HTML representation (has an `__html__`
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method) that representation is used, otherwise the object passed is
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converted into a unicode string and then assumed to be safe:
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>>> Markup("Hello <em>World</em>!")
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Markup(u'Hello <em>World</em>!')
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>>> class Foo(object):
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... def __html__(self):
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... return '<a href="#">foo</a>'
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...
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>>> Markup(Foo())
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Markup(u'<a href="#">foo</a>')
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If you want object passed being always treated as unsafe you can use the
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:meth:`escape` classmethod to create a :class:`Markup` object:
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>>> Markup.escape("Hello <em>World</em>!")
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Markup(u'Hello <em>World</em>!')
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Operations on a markup string are markup aware which means that all
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arguments are passed through the :func:`escape` function:
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>>> em = Markup("<em>%s</em>")
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>>> em % "foo & bar"
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Markup(u'<em>foo & bar</em>')
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>>> strong = Markup("<strong>%(text)s</strong>")
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>>> strong % {'text': '<blink>hacker here</blink>'}
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Markup(u'<strong><blink>hacker here</blink></strong>')
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>>> Markup("<em>Hello</em> ") + "<foo>"
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Markup(u'<em>Hello</em> <foo>')
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"""
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__slots__ = ()
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def __new__(cls, base=u'', encoding=None, errors='strict'):
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if hasattr(base, '__html__'):
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base = base.__html__()
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if encoding is None:
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return text_type.__new__(cls, base)
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return text_type.__new__(cls, base, encoding, errors)
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def __html__(self):
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return self
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def __add__(self, other):
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if isinstance(other, string_types) or hasattr(other, '__html__'):
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return self.__class__(super(Markup, self).__add__(self.escape(other)))
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return NotImplemented
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def __radd__(self, other):
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if hasattr(other, '__html__') or isinstance(other, string_types):
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return self.escape(other).__add__(self)
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return NotImplemented
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def __mul__(self, num):
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if isinstance(num, int_types):
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return self.__class__(text_type.__mul__(self, num))
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return NotImplemented
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__rmul__ = __mul__
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def __mod__(self, arg):
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if isinstance(arg, tuple):
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arg = tuple(_MarkupEscapeHelper(x, self.escape) for x in arg)
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else:
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arg = _MarkupEscapeHelper(arg, self.escape)
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return self.__class__(text_type.__mod__(self, arg))
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def __repr__(self):
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return '%s(%s)' % (
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self.__class__.__name__,
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text_type.__repr__(self)
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)
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def join(self, seq):
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return self.__class__(text_type.join(self, map(self.escape, seq)))
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join.__doc__ = text_type.join.__doc__
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def split(self, *args, **kwargs):
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return list(map(self.__class__, text_type.split(self, *args, **kwargs)))
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split.__doc__ = text_type.split.__doc__
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def rsplit(self, *args, **kwargs):
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return list(map(self.__class__, text_type.rsplit(self, *args, **kwargs)))
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rsplit.__doc__ = text_type.rsplit.__doc__
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def splitlines(self, *args, **kwargs):
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return list(map(self.__class__, text_type.splitlines(
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self, *args, **kwargs)))
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splitlines.__doc__ = text_type.splitlines.__doc__
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def unescape(self):
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r"""Unescape markup again into an text_type string. This also resolves
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known HTML4 and XHTML entities:
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>>> Markup("Main » <em>About</em>").unescape()
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u'Main \xbb <em>About</em>'
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"""
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from markupsafe._constants import HTML_ENTITIES
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def handle_match(m):
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name = m.group(1)
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if name in HTML_ENTITIES:
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return unichr(HTML_ENTITIES[name])
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try:
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if name[:2] in ('#x', '#X'):
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return unichr(int(name[2:], 16))
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elif name.startswith('#'):
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return unichr(int(name[1:]))
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except ValueError:
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pass
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# Don't modify unexpected input.
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return m.group()
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return _entity_re.sub(handle_match, text_type(self))
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def striptags(self):
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r"""Unescape markup into an text_type string and strip all tags. This
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also resolves known HTML4 and XHTML entities. Whitespace is
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normalized to one:
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>>> Markup("Main » <em>About</em>").striptags()
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u'Main \xbb About'
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"""
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stripped = u' '.join(_striptags_re.sub('', self).split())
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return Markup(stripped).unescape()
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@classmethod
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def escape(cls, s):
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"""Escape the string. Works like :func:`escape` with the difference
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that for subclasses of :class:`Markup` this function would return the
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correct subclass.
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"""
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rv = escape(s)
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if rv.__class__ is not cls:
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return cls(rv)
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return rv
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def make_simple_escaping_wrapper(name):
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orig = getattr(text_type, name)
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def func(self, *args, **kwargs):
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args = _escape_argspec(list(args), enumerate(args), self.escape)
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_escape_argspec(kwargs, iteritems(kwargs), self.escape)
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return self.__class__(orig(self, *args, **kwargs))
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func.__name__ = orig.__name__
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func.__doc__ = orig.__doc__
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return func
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for method in '__getitem__', 'capitalize', \
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'title', 'lower', 'upper', 'replace', 'ljust', \
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'rjust', 'lstrip', 'rstrip', 'center', 'strip', \
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'translate', 'expandtabs', 'swapcase', 'zfill':
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locals()[method] = make_simple_escaping_wrapper(method)
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# new in python 2.5
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if hasattr(text_type, 'partition'):
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def partition(self, sep):
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return tuple(map(self.__class__,
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text_type.partition(self, self.escape(sep))))
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def rpartition(self, sep):
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return tuple(map(self.__class__,
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text_type.rpartition(self, self.escape(sep))))
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# new in python 2.6
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if hasattr(text_type, 'format'):
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def format(*args, **kwargs):
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self, args = args[0], args[1:]
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formatter = EscapeFormatter(self.escape)
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kwargs = _MagicFormatMapping(args, kwargs)
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return self.__class__(formatter.vformat(self, args, kwargs))
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def __html_format__(self, format_spec):
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if format_spec:
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raise ValueError('Unsupported format specification '
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'for Markup.')
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return self
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# not in python 3
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if hasattr(text_type, '__getslice__'):
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__getslice__ = make_simple_escaping_wrapper('__getslice__')
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del method, make_simple_escaping_wrapper
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class _MagicFormatMapping(Mapping):
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"""This class implements a dummy wrapper to fix a bug in the Python
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standard library for string formatting.
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See http://bugs.python.org/issue13598 for information about why
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this is necessary.
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"""
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def __init__(self, args, kwargs):
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self._args = args
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self._kwargs = kwargs
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self._last_index = 0
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def __getitem__(self, key):
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if key == '':
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idx = self._last_index
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self._last_index += 1
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try:
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return self._args[idx]
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except LookupError:
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pass
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key = str(idx)
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return self._kwargs[key]
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def __iter__(self):
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return iter(self._kwargs)
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def __len__(self):
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return len(self._kwargs)
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if hasattr(text_type, 'format'):
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class EscapeFormatter(string.Formatter):
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def __init__(self, escape):
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self.escape = escape
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def format_field(self, value, format_spec):
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if hasattr(value, '__html_format__'):
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rv = value.__html_format__(format_spec)
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elif hasattr(value, '__html__'):
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if format_spec:
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raise ValueError('No format specification allowed '
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'when formatting an object with '
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'its __html__ method.')
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rv = value.__html__()
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else:
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# We need to make sure the format spec is unicode here as
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# otherwise the wrong callback methods are invoked. For
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# instance a byte string there would invoke __str__ and
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# not __unicode__.
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rv = string.Formatter.format_field(
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self, value, text_type(format_spec))
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return text_type(self.escape(rv))
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def _escape_argspec(obj, iterable, escape):
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"""Helper for various string-wrapped functions."""
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for key, value in iterable:
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if hasattr(value, '__html__') or isinstance(value, string_types):
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obj[key] = escape(value)
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return obj
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class _MarkupEscapeHelper(object):
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"""Helper for Markup.__mod__"""
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def __init__(self, obj, escape):
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self.obj = obj
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self.escape = escape
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__getitem__ = lambda s, x: _MarkupEscapeHelper(s.obj[x], s.escape)
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__unicode__ = __str__ = lambda s: text_type(s.escape(s.obj))
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__repr__ = lambda s: str(s.escape(repr(s.obj)))
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__int__ = lambda s: int(s.obj)
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__float__ = lambda s: float(s.obj)
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# we have to import it down here as the speedups and native
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# modules imports the markup type which is define above.
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try:
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from markupsafe._speedups import escape, escape_silent, soft_unicode
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except ImportError:
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from markupsafe._native import escape, escape_silent, soft_unicode
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if not PY2:
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soft_str = soft_unicode
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__all__.append('soft_str')
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