U
    yc#                     @   s6  d Z ddlZddlmZ edZedejejB ejB Z	edej
ejB ejB ZedejZG dd	 d	eZG d
d deZd2ddZd3ddZd4ddZd5ddZdd Zdd Zdd Zdd Zdd Zi Zdd  Zd!d" Zd6d#d$Zd7d&d'ZG d(d) d)Z d*d+ Z!d,d- Z"d.d/ Z#G d0d1 d1eZ$dS )8z
    pygments.util
    ~~~~~~~~~~~~~

    Utility functions.

    :copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
    N)TextIOWrapperz[/\\ ]z
    <!DOCTYPE\s+(
     [a-zA-Z_][a-zA-Z0-9]*
     (?: \s+      # optional in HTML5
     [a-zA-Z_][a-zA-Z0-9]*\s+
     "[^"]*")?
     )
     [^>]*>
z<(.+?)(\s.*?)?>.*?</.+?>z\s*<\?xml[^>]*\?>c                   @   s   e Zd ZdZdS )ClassNotFoundzCRaised if one of the lookup functions didn't find a matching class.N)__name__
__module____qualname____doc__ r   r   8/tmp/pip-build-0we0fmvo/pip/pip/_vendor/pygments/util.pyr      s   r   c                   @   s   e Zd ZdS )OptionErrorN)r   r   r   r   r   r   r	   r
   "   s   r
   Fc                 C   s@   |  ||}|r| }||kr<td|dtt|f |S )Nz%Value for option %s must be one of %sz, )getlowerr
   joinmapstr)optionsoptnamealloweddefaultnormcasestringr   r   r	   get_choice_opt&   s    r   c                 C   s|   |  ||}t|tr|S t|tr,t|S t|tsHtd||f n0| dkrXdS | dkrhdS td||f d S )NzBInvalid type %r for option %s; use 1/0, yes/no, true/false, on/off)1yestrueonT)0nofalseoffFzCInvalid value %r for option %s; use 1/0, yes/no, true/false, on/off)r   
isinstanceboolintr   r
   r   r   r   r   r   r   r   r	   get_bool_opt0   s(    


  r#   c                 C   sb   |  ||}z
t|W S  tk
r:   td||f Y n$ tk
r\   td||f Y nX d S )Nz=Invalid type %r for option %s; you must give an integer valuez>Invalid value %r for option %s; you must give an integer value)r   r!   	TypeErrorr
   
ValueErrorr"   r   r   r	   get_int_optD   s    
 
 r&   c                 C   sH   |  ||}t|tr| S t|ttfr4t|S td||f d S )Nz9Invalid type %r for option %s; you must give a list value)r   r   r   splitlisttupler
   )r   r   r   valr   r   r	   get_list_optR   s    
 r+   c                 C   sP   | j s
dS g }| j   D ]$}| r<|d|   q qBqd| S )N  )r   strip
splitlinesappendr   lstrip)objresliner   r   r	   docstring_headline^   s    r5   c                    s    fdd} j |_ t|S )zAReturn a static text analyser function that returns float values.c              	      sb   z | }W n t k
r"   Y dS X |s,dS ztdtdt|W S  ttfk
r\   Y dS X d S )Ng        g      ?)	Exceptionminmaxfloatr%   r$   )textrvfr   r	   text_analysel   s    z%make_analysator.<locals>.text_analyse)r   staticmethod)r=   r>   r   r<   r	   make_analysatorj   s    r@   c                 C   s   |  d}|dkr$| d|  }n|  }|drz(dd t|dd  D d }W n tk
rt   Y d	S X td
| tj	}|
|dk	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 ``'^$'``)
    
r   Nz#!c                 S   s   g | ]}|r| d s|qS )-)
startswith).0xr   r   r	   
<listcomp>   s     
z#shebang_matches.<locals>.<listcomp>   Fz^%s(\.(exe|cmd|bat|bin))?$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 | }|dkrdS |d}t|tj| dk	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"'
    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   st   t | rdS t| }z
t| W S  tk
rn   t| }|dk	rHY dS t| dd dk	}|t|< | Y S X dS )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@  fS )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  |rT|D ]}| || d  q:n8|D ]2}t|d }| ||dd  |d	  d  qX| |d
  d|S )z)Formats a sequence of strings for output.r-      rU   z = (,"NrH   )rA   )r0   reprr   )	var_nameseqrawindent_levellinesZbase_indentZinner_indentirr   r   r	   format_lines   s    $rv   r   c                 C   s>   g }t  }| D ]*}||ks||kr$q|| || q|S )za
    Returns a list with duplicates removed from the iterable `it`.

    Order is preserved.
    )setr0   add)itZalready_seenlstseenrt   r   r   r	   duplicates_removed   s    
r|   c                   @   s   e Zd ZdZdd ZdS )FuturezGeneric class to defer some work.

    Handled specially in RegexLexerMeta, to support regex string construction at
    first use.
    c                 C   s   t d S N)NotImplementedErrorselfr   r   r	   r      s    z
Future.getN)r   r   r   r   r   r   r   r   r	   r}      s   r}   c                 C   s   z|  d} | dfW S  tk
r~   z&ddl}| }|   } | |fW  Y S  ttfk
rx   |  d} | df Y  Y S X Y nX dS )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.
    zutf-8r   Nlatin1)decodeUnicodeDecodeErrorlocalegetpreferredencodingLookupError)r:   r   Zprefencodingr   r   r	   guess_decode  s    


r   c                 C   sD   t |ddr<z| |j} W n tk
r0   Y nX | |jfS t| S )zDecode *text* coming from terminal *term*.

    First try the terminal encoding, if given.
    Then try UTF-8.  Then try the preferred locale encoding.
    Fall back to latin-1, which always works.
    encodingN)getattrr   r   r   r   )r:   termr   r   r	   guess_decode_from_terminal  s    
r   c                 C   s"   t | ddr| jS ddl}| 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 Zd Zdd ZdS )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   )NF)N)N)N)Fr   )r   )%r   rL   ior   rM   rJ   DOTALL	MULTILINEVERBOSErV   rN   rc   rX   r_   r%   r   r6   r
   r   r#   r&   r+   r5   r@   rT   r\   r^   ra   re   rh   rv   r|   r}   r   r   r   r   r   r   r   r	   <module>   s>   

	




-	


