B
    2*™\G  ã               @   sÀ   d Z ddlZddlZddlZddlmZ dgZe d¡Ze d¡Z	e d¡Z
e d¡Ze d	¡Ze d
¡Ze d¡Ze d¡Ze d¡Ze dej¡Ze d
¡Ze d¡ZG dd„ dejƒZdS )zA parser for HTML and XHTML.é    N)ÚunescapeÚ
HTMLParserz[&<]z
&[a-zA-Z#]z%&([a-zA-Z][-.a-zA-Z0-9]*)[^a-zA-Z0-9]z)&#(?:[0-9]+|[xX][0-9a-fA-F]+)[^0-9a-fA-F]z	<[a-zA-Z]ú>z--\s*>z+([a-zA-Z][^\t\n\r\f />\x00]*)(?:\s|/(?!>))*z]((?<=[\'"\s/])[^\s/>][^\s/=>]*)(\s*=+\s*(\'[^\']*\'|"[^"]*"|(?![\'"])[^>\s]*))?(?:\s|/(?!>))*aF  
  <[a-zA-Z][^\t\n\r\f />\x00]*       # tag name
  (?:[\s/]*                          # optional whitespace before attribute name
    (?:(?<=['"\s/])[^\s/>][^\s/=>]*  # attribute name
      (?:\s*=+\s*                    # value indicator
        (?:'[^']*'                   # LITA-enclosed value
          |"[^"]*"                   # LIT-enclosed value
          |(?!['"])[^>\s]*           # bare value
         )
         (?:\s*,)*                   # possibly followed by a comma
       )?(?:\s|/(?!>))*
     )*
   )?
  \s*                                # trailing whitespace
z#</\s*([a-zA-Z][-.a-zA-Z0-9:_]*)\s*>c               @   sè   e Zd ZdZdZddœdd„Zdd„ Zd	d
„ Zdd„ ZdZ	dd„ Z
dd„ Zdd„ Zdd„ Zdd„ Zd9dd„Zdd„ Zdd„ Zdd „ Zd!d"„ Zd#d$„ Zd%d&„ Zd'd(„ Zd)d*„ Zd+d,„ Zd-d.„ Zd/d0„ Zd1d2„ Zd3d4„ Zd5d6„ Zd7d8„ ZdS ):r   aE  Find tags and other markup and call handler functions.

    Usage:
        p = HTMLParser()
        p.feed(data)
        ...
        p.close()

    Start tags are handled by calling self.handle_starttag() or
    self.handle_startendtag(); end tags by self.handle_endtag().  The
    data between tags is passed from the parser to the derived class
    by calling self.handle_data() with the data as argument (the data
    may be split up in arbitrary chunks).  If convert_charrefs is
    True the character references are converted automatically to the
    corresponding Unicode character (and self.handle_data() is no
    longer split in chunks), otherwise they are passed by calling
    self.handle_entityref() or self.handle_charref() with the string
    containing respectively the named or numeric reference as the
    argument.
    )ZscriptZstyleT)Úconvert_charrefsc            C   s   || _ |  ¡  dS )zÆInitialize and reset this instance.

        If convert_charrefs is True (the default), all character references
        are automatically converted to the corresponding Unicode characters.
        N)r   Úreset)Úselfr   © r   ú6C:\ALexclude\prg\programme\Python37\Lib\html\parser.pyÚ__init__W   s    zHTMLParser.__init__c             C   s(   d| _ d| _t| _d| _tj | ¡ dS )z1Reset this instance.  Loses all unprocessed data.Ú z???N)ÚrawdataÚlasttagÚinteresting_normalÚinterestingÚ
cdata_elemÚ_markupbaseÚ
ParserBaser   )r   r   r   r	   r   `   s
    zHTMLParser.resetc             C   s   | j | | _ |  d¡ dS )z‘Feed data to the parser.

        Call this as often as you want, with as little or as much text
        as you want (may include '\n').
        r   N)r   Úgoahead)r   Údatar   r   r	   Úfeedh   s    zHTMLParser.feedc             C   s   |   d¡ dS )zHandle any buffered data.é   N)r   )r   r   r   r	   Úcloseq   s    zHTMLParser.closeNc             C   s   | j S )z)Return full source of start tag: '<...>'.)Ú_HTMLParser__starttag_text)r   r   r   r	   Úget_starttag_textw   s    zHTMLParser.get_starttag_textc             C   s$   |  ¡ | _t d| j tj¡| _d S )Nz</\s*%s\s*>)Úlowerr   ÚreÚcompileÚIr   )r   Úelemr   r   r	   Úset_cdata_mode{   s    
zHTMLParser.set_cdata_modec             C   s   t | _d | _d S )N)r   r   r   )r   r   r   r	   Úclear_cdata_mode   s    zHTMLParser.clear_cdata_modec             C   s@  | j }d}t|ƒ}xº||k rÎ| jrx| jsx| d|¡}|dk r | dt||d ƒ¡}|dkrrt d¡ 	||¡srP |}n(| j
 	||¡}|r”| ¡ }n| jrœP |}||k rÞ| jrÌ| jsÌ|  t|||… ƒ¡ n|  |||… ¡ |  ||¡}||krôP |j}|d|ƒrDt ||¡r |  |¡}	n„|d|ƒr8|  |¡}	nl|d|ƒrP|  |¡}	nT|d|ƒrh|  |¡}	n<|d	|ƒr€|  |¡}	n$|d
 |k r¢|  d¡ |d
 }	nP |	dk r6|s¶P | d|d
 ¡}	|	dk rô| d|d
 ¡}	|	dk rü|d
 }	n|	d
7 }	| jr$| js$|  t|||	… ƒ¡ n|  |||	… ¡ |  ||	¡}q|d|ƒrèt ||¡}|r¬| ¡ dd… }
|  |
¡ | ¡ }	|d|	d
 ƒsœ|	d
 }	|  ||	¡}qn:d||d … krä|  |||d … ¡ |  ||d ¡}P q|d|ƒrt ||¡}|rF| d
¡}
|  |
¡ | ¡ }	|d|	d
 ƒs8|	d
 }	|  ||	¡}qt ||¡}|rž|rš| ¡ ||d … krš| ¡ }	|	|krŠ|}	|  ||d
 ¡}P n,|d
 |k rÈ|  d¡ |  ||d
 ¡}nP qqW |r.||k r.| js.| jr| js|  t|||… ƒ¡ n|  |||… ¡ |  ||¡}||d … | _ d S )Nr   ú<ú&é"   z[\s;]z</z<!--z<?z<!r   r   z&#é   éÿÿÿÿú;)r   Úlenr   r   ÚfindÚrfindÚmaxr   r   Úsearchr   ÚstartÚhandle_datar   Z	updateposÚ
startswithÚstarttagopenÚmatchÚparse_starttagÚparse_endtagÚparse_commentÚparse_piÚparse_html_declarationÚcharrefÚgroupÚhandle_charrefÚendÚ	entityrefÚhandle_entityrefÚ
incomplete)r   r9   r   ÚiÚnÚjZampposr0   r.   ÚkÚnamer   r   r	   r   †   sÂ    
 











zHTMLParser.goaheadc             C   s¢   | j }|||d … dkr$|  |¡S |||d … dkrB|  |¡S |||d …  ¡ dkr”| d|d ¡}|dkrvdS |  ||d	 |… ¡ |d
 S |  |¡S d S )Né   z<!--é   z<![é	   z	<!doctyper   r%   r$   r   )r   r3   Zparse_marked_sectionr   r(   Úhandle_declÚparse_bogus_comment)r   r=   r   Úgtposr   r   r	   r5      s    

z!HTMLParser.parse_html_declarationr   c             C   sD   | j }| d|d ¡}|dkr"dS |r<|  ||d |… ¡ |d S )Nr   r$   r%   r   )r   r(   Úhandle_comment)r   r=   Zreportr   Úposr   r   r	   rF     s    zHTMLParser.parse_bogus_commentc             C   sH   | j }t ||d ¡}|sdS | ¡ }|  ||d |… ¡ | ¡ }|S )Nr$   r%   )r   Úpicloser+   r,   Ú	handle_pir9   )r   r=   r   r0   r?   r   r   r	   r4   !  s    zHTMLParser.parse_pic             C   sà  d | _ |  |¡}|dk r|S | j}|||… | _ g }t ||d ¡}| ¡ }| d¡ ¡  | _}xÀ||k r t	 ||¡}|s~P | ddd¡\}	}
}|
sœd }nZ|d d… d  krÀ|dd … ksên |d d… d  kræ|dd … krön n|dd… }|rt
|ƒ}| |	 ¡ |f¡ | ¡ }qbW |||…  ¡ }|dkr |  ¡ \}}d	| j kr||| j  d	¡ }t| j ƒ| j  d	¡ }n|t| j ƒ }|  |||… ¡ |S | d
¡rº|  ||¡ n"|  ||¡ || jkrÜ|  |¡ |S )Nr   r   r$   rC   ú'r%   ú")r   z/>Ú
z/>)r   Úcheck_for_whole_start_tagr   Útagfind_tolerantr0   r9   r7   r   r   Úattrfind_tolerantr   ÚappendÚstripZgetposÚcountr'   r)   r-   ÚendswithÚhandle_startendtagÚhandle_starttagÚCDATA_CONTENT_ELEMENTSr   )r   r=   Úendposr   Úattrsr0   r@   ÚtagÚmZattrnameÚrestZ	attrvaluer9   ÚlinenoÚoffsetr   r   r	   r1   -  sP    
&(

zHTMLParser.parse_starttagc             C   s¶   | j }t ||¡}|rª| ¡ }|||d … }|dkr>|d S |dkr~| d|¡rZ|d S | d|¡rjdS ||krv|S |d S |dkrŠdS |dkr–dS ||kr¢|S |d S td	ƒ‚d S )
Nr   r   ú/z/>r$   r%   r   z6abcdefghijklmnopqrstuvwxyz=/ABCDEFGHIJKLMNOPQRSTUVWXYZzwe should not get here!)r   Úlocatestarttagend_tolerantr0   r9   r.   ÚAssertionError)r   r=   r   r\   r?   Únextr   r   r	   rO   `  s.    z$HTMLParser.check_for_whole_start_tagc             C   s  | j }t ||d ¡}|sdS | ¡ }t ||¡}|sÀ| jd k	rV|  |||… ¡ |S t ||d ¡}|s|||d … dkr†|d S |  	|¡S | 
d¡ ¡ }| d| ¡ ¡}|  |¡ |d S | 
d¡ ¡ }| jd k	rø|| jkrø|  |||… ¡ |S |  |¡ |  ¡  |S )Nr   r%   r$   rC   z</>r   )r   Ú	endendtagr+   r9   Ú
endtagfindr0   r   r-   rP   rF   r7   r   r(   Úhandle_endtagr    )r   r=   r   r0   rG   Z	namematchZtagnamer   r   r   r	   r2   ‚  s6    





zHTMLParser.parse_endtagc             C   s   |   ||¡ |  |¡ d S )N)rW   rf   )r   r[   rZ   r   r   r	   rV   ª  s    zHTMLParser.handle_startendtagc             C   s   d S )Nr   )r   r[   rZ   r   r   r	   rW   ¯  s    zHTMLParser.handle_starttagc             C   s   d S )Nr   )r   r[   r   r   r	   rf   ³  s    zHTMLParser.handle_endtagc             C   s   d S )Nr   )r   rA   r   r   r	   r8   ·  s    zHTMLParser.handle_charrefc             C   s   d S )Nr   )r   rA   r   r   r	   r;   »  s    zHTMLParser.handle_entityrefc             C   s   d S )Nr   )r   r   r   r   r	   r-   ¿  s    zHTMLParser.handle_datac             C   s   d S )Nr   )r   r   r   r   r	   rH   Ã  s    zHTMLParser.handle_commentc             C   s   d S )Nr   )r   Zdeclr   r   r	   rE   Ç  s    zHTMLParser.handle_declc             C   s   d S )Nr   )r   r   r   r   r	   rK   Ë  s    zHTMLParser.handle_pic             C   s   d S )Nr   )r   r   r   r   r	   Úunknown_declÎ  s    zHTMLParser.unknown_declc             C   s   t jdtdd t|ƒS )NzZThe unescape method is deprecated and will be removed in 3.5, use html.unescape() instead.r$   )Ú
stacklevel)ÚwarningsÚwarnÚDeprecationWarningr   )r   Úsr   r   r	   r   Ò  s    
zHTMLParser.unescape)r   )Ú__name__Ú
__module__Ú__qualname__Ú__doc__rX   r
   r   r   r   r   r   r   r    r   r5   rF   r4   r1   rO   r2   rV   rW   rf   r8   r;   r-   rH   rE   rK   rg   r   r   r   r   r	   r   ?   s8   		z
3"()rp   r   ri   r   Zhtmlr   Ú__all__r   r   r<   r:   r6   r/   rJ   ZcommentcloserP   rQ   ÚVERBOSEra   rd   re   r   r   r   r   r   r	   Ú<module>   s(   











