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pygments.util
~~~~~~~~~~~~~
Utility functions.
:copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
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|�durLd S d S ) a� Check if the given regular expression matches the last part of the
shebang if one exists.
>>> from pygments.util import shebang_matches
>>> shebang_matches('#!/usr/bin/env python', r'python(2\.\d)?')
True
>>> shebang_matches('#!/usr/bin/python2.4', r'python(2\.\d)?')
True
>>> shebang_matches('#!/usr/bin/python-ruby', r'python(2\.\d)?')
False
>>> shebang_matches('#!/usr/bin/python/ruby', r'python(2\.\d)?')
False
>>> shebang_matches('#!/usr/bin/startsomethingwith python',
... r'python(2\.\d)?')
True
It also checks for common windows executable file extensions::
>>> shebang_matches('#!C:\\Python2.4\\Python.exe', r'python(2\.\d)?')
True
Parameters (``'-f'`` or ``'--foo'`` are ignored so ``'perl'`` does
the same as ``'perl -e'``)
Note that this method automatically searches the whole string (eg:
the regular expression is wrapped in ``'^$'``)
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� �rT c C s< t �| �}|du r dS |�d�}t�|tj��|�� �duS )z�Check if the doctype matches a regular expression (if present).
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t | d�S )z3Check if the file looks like it has a html doctype.�html)r\ )r: r r r �html_doctype_matches� s
r^ c C sn t �| �rdS t| �}zt| W S ty6 t�| �}|dur#Y dS t�| dd� �du}|t|< | Y S w )z2Check if a doctype exists or if we have some tags.TNi� )� xml_decl_rerY �hash�_looks_like_xml_cache�KeyErrorrV rO �tag_re)r: �keyrZ r; r r r �looks_like_xml� s
�re c C s d| d? d| d@ fS )zoGiven a unicode character code with length greater than 16 bits,
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� d �|�S ) z)Formats a sequence of strings for output.r- � rU z = (�,�"N���rH �)rA )r0 �reprr
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Returns a list with duplicates removed from the iterable `it`.
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r c @ s e Zd ZdZdd� ZdS )�Futurez�Generic class to defer some work.
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first use.
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| � d�} | dfW S ty; zddl}|�� }| � � } | |fW Y S ttfy: | � d�} | df Y Y S w w )z�Decode *text* with guessed encoding.
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zutf-8r N�latin1)�decode�UnicodeDecodeError�locale�getpreferredencoding� LookupError)r: r� � prefencodingr r r � guess_decode s
��r� c C sH t |dd�r z| �|j�} W n ty Y t| �S w | |jfS t| �S )z�Decode *text* coming from terminal *term*.
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�encodingN)�getattrr� r� r� r� )r: �termr r r �guess_decode_from_terminal s �
r� c C s" t | dd�r | jS ddl}|�� S )z7Return our best guess of encoding for the given *term*.r� Nr )r� r� r� r� )r� r� r r r �terminal_encoding) s r� c @ s e Zd Zdd� ZdS )�UnclosingTextIOWrapperc C s | � � d S r� )�flushr� r r r �close3 s z UnclosingTextIOWrapper.closeN)r r r r� r r r r r� 1 s r� )NFr� )Fr )r )&r rL �ior rM rJ �DOTALL� MULTILINE�VERBOSErV �UNICODErN rc rX r_ r% r r6 r
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