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pygments.util
~~~~~~~~~~~~~
Utility functions.
:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
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|dk rd 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 | }|dkrdS |d}t|tj| dk S )zCheck if the doctype matches a regular expression (if present).
Note that this method only checks the first part of a DOCTYPE.
eg: 'html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"'
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rn t| }|dk rHY dS t| dd dk }|t|< | Y S X dS )z2Check if a doctype exists or if we have some tags.TNi ) xml_decl_rerY hash_looks_like_xml_cacheKeyErrorrV 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,
return the two 16 bit surrogate pair.
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surrogatepair s rh c C s g }d| d }d|d d }| || d |rT|D ]}| || d q:n8|D ]2}t|d }| ||dd |d d qX| |d
d |S ) z)Formats a sequence of strings for output.r- rU z = (,"NrH )rA )r0 reprr
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Returns a list with duplicates removed from the iterable `it`.
Order is preserved.
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r c @ s e Zd ZdZdd ZdS )FuturezGeneric class to defer some work.
Handled specially in RegexLexerMeta, to support regex string construction at
first use.
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rx | d} | df Y Y S X Y nX dS )zDecode *text* with guessed encoding.
First try UTF-8; this should fail for non-UTF-8 encodings.
Then try the preferred locale encoding.
Fall back to latin-1, which always works.
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