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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 ``'^$'``) � r Nz#!c S s g | ] }|r|� d �s|�qS )�-)� startswith)�.0�xr r r � <listcomp>� s � �z#shebang_matches.<locals>.<listcomp>� ���Fz^%s(\.(exe|cmd|bat|bin))?$T) �findr rC � split_path_rer' r. � IndexError�re�compile� IGNORECASE�search)r: �regex�index� first_line�foundr r r �shebang_matches{ s � �rT c C s< t �| �}|du r dS |�d�}t�|tj��|�� �duS )z�Check 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"' NF� )�doctype_lookup_rerO �grouprL rM �I�matchr. )r: rP �m�doctyper r r �doctype_matches� s r\ c C s 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, return the two 16 bit surrogate pair. i�� � i � i� r )�cr r r � surrogatepair� s rh c C s� g }d| d }d|d d }|� || d � |r*|D ] }|� || d � q n |D ]}t|d �}|� ||dd� |d d � q,|� |d � d �|�S ) z)Formats a sequence of strings for output.r- � rU z = (�,�"N���rH �)rA )r0 �reprr ) �var_name�seq�raw� indent_level�lines� base_indent� inner_indent�i�rr r r � format_lines� s � $ rx r c C s> g }t � }| D ]}||v s||v rq|�|� |�|� q|S )za Returns a list with duplicates removed from the iterable `it`. Order is preserved. )�setr0 �add)�it� already_seen�lst�seenrv r r r �duplicates_removed� s r c @ s e Zd ZdZdd� ZdS )�Futurez�Generic class to defer some work. Handled specially in RegexLexerMeta, to support regex string construction at first use. c C s t ��N)�NotImplementedError��selfr r r r � s z Future.getN)r r r r r r r r r r� � s r� c C sx z | � d�} | dfW S ty; zddl}|�� }| � � } | |fW Y S ttfy: | � d�} | df Y Y S w w )z�Decode *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. 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*. First try the terminal encoding, if given. Then try UTF-8. Then try the preferred locale encoding. 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