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U
    .e(                  !   @   s  d dl mZmZmZ d dlmZmZ d dlmZm	Z	 d dl
Z
d dlZd dlmZ ddlmZmZmZmZ ddlmZ dd	lmZ d d
lmZ zd dlmZ W n ek
r   eZY nX edd eD Zedd eD Zedd eD ZeeddgB ZdZej rJed dkr&e!ddks*t"e#edd e$d d Z%n
e#eZ%e&ddddddddddd d!d"d#d$d%d&d'd(d)d*d+d,d-d.d/d0d1d2d3d4d5g Z'e#d6Z(i Z)G d7d8 d8e*Z+d9d: Z,G d;d< d<e*Z-G d=d> d>e-Z.G d?d@ d@e/Z0G dAdB dBe*Z1G dCdD dDe*Z2dEdF Z3dS )G    )absolute_importdivisionunicode_literals)	text_typebinary_type)http_clienturllibN)webencodings   )EOFspaceCharactersasciiLettersasciiUppercase)_ReparseException)_utils)StringIO)BytesIOc                 C   s   g | ]}| d qS asciiencode.0item r   E/usr/lib/python3.8/site-packages/pip/_vendor/html5lib/_inputstream.py
<listcomp>   s     r   c                 C   s   g | ]}| d qS r   r   r   r   r   r   r      s     c                 C   s   g | ]}| d qS r   r   r   r   r   r   r      s        >   <u   [---﷐-﷯￾￿🿾🿿𯿾𯿿𿿾𿿿񏿾񏿿񟿾񟿿񯿾񯿿񿿾񿿿򏿾򏿿򟿾򟿿򯿾򯿿򿿾򿿿󏿾󏿿󟿾󟿿󯿾󯿿󿿾󿿿􏿾􏿿]]z"\uD800-\uDFFF"i i i i i i i i i i i i i i i i i	 i	 i
 i
 i i i i i i i i i i i i z[	- -/:-@\[-`{-~]c                   @   sH   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	dd Z
dS )BufferedStreamzBuffering for streams that do not have buffering of their own

    The buffer is implemented as a list of chunks on the assumption that
    joining many strings will be slow since it is O(n**2)
    c                 C   s   || _ g | _ddg| _d S )Nr   r   )streambufferposition)selfr"   r   r   r   __init__@   s    zBufferedStream.__init__c                 C   s<   d}| j d | jd  D ]}|t|7 }q|| jd 7 }|S Nr   r
   )r#   r$   len)r%   poschunkr   r   r   tellE   s
    zBufferedStream.tellc                 C   sT   ||   kst|}d}t| j| |k rF|t| j| 8 }|d7 }q||g| _d S r'   )_bufferedBytesAssertionErrorr(   r#   r$   )r%   r)   offsetir   r   r   seekL   s    
zBufferedStream.seekc                 C   sT   | j s| |S | jd t| j krF| jd t| j d krF| |S | |S d S )Nr   r
   r   )r#   _readStreamr$   r(   _readFromBuffer)r%   bytesr   r   r   readU   s    

zBufferedStream.readc                 C   s   t dd | jD S )Nc                 S   s   g | ]}t |qS r   )r(   r   r   r   r   r   _   s     z1BufferedStream._bufferedBytes.<locals>.<listcomp>)sumr#   r%   r   r   r   r,   ^   s    zBufferedStream._bufferedBytesc                 C   s<   | j |}| j| | jd  d7  < t|| jd< |S r'   )r"   r4   r#   appendr$   r(   )r%   r3   datar   r   r   r1   a   s
    zBufferedStream._readStreamc                 C   s   |}g }| j d }| j d }|t| jk r|dkr|dks>t| j| }|t|| krl|}||| g| _ n"t|| }|t|g| _ |d7 }|||||   ||8 }d}q|r|| | d|S )Nr   r
       )r$   r(   r#   r-   r7   r1   join)r%   r3   ZremainingBytesrvZbufferIndexZbufferOffsetZbufferedDataZbytesToReadr   r   r   r2   h   s&    


zBufferedStream._readFromBufferN)__name__
__module____qualname____doc__r&   r+   r0   r4   r,   r1   r2   r   r   r   r   r!   9   s   		r!   c                 K   s   t | tjs(t | tjjr.t | jtjr.d}n&t| drJt | dt	}n
t | t	}|rdd |D }|rvt
d| t| f|S t| f|S d S )NFr4   r   c                 S   s   g | ]}| d r|qS )Z	_encoding)endswith)r   xr   r   r   r      s     
 z#HTMLInputStream.<locals>.<listcomp>z3Cannot set an encoding with a unicode input, set %r)
isinstancer   ZHTTPResponser   ZresponseZaddbasefphasattrr4   r   	TypeErrorHTMLUnicodeInputStreamHTMLBinaryInputStream)sourcekwargsZ	isUnicodeZ	encodingsr   r   r   HTMLInputStream   s    

rJ   c                   @   sp   e Zd ZdZdZdd Zdd Zdd Zd	d
 Zdd Z	dd Z
dddZdd Zdd ZdddZdd ZdS )rF   Provides a unicode stream of characters to the HTMLTokenizer.

    This class takes care of character encoding and removing or replacing
    incorrect byte-sequences and also provides column and line tracking.

    i (  c                 C   sZ   t jsd| _ntddkr$| j| _n| j| _dg| _tddf| _| 	|| _
|   dS )  Initialises the HTMLInputStream.

        HTMLInputStream(source, [encoding]) -> Normalized stream from source
        for use by html5lib.

        source can be either a file-object, local filename or a string.

        The optional encoding parameter must be a string that indicates
        the encoding.  If specified, that encoding will be used,
        regardless of any BOM or later declaration (such as in a meta
        element)

        Nu   􏿿r
   r   utf-8certain)r   supports_lone_surrogatesreportCharacterErrorsr(   characterErrorsUCS4characterErrorsUCS2ZnewLineslookupEncodingcharEncoding
openStream
dataStreamreset)r%   rH   r   r   r   r&      s    
zHTMLUnicodeInputStream.__init__c                 C   s.   d| _ d| _d| _g | _d| _d| _d | _d S )N r   )r*   	chunkSizechunkOffseterrorsprevNumLinesprevNumCols_bufferedCharacterr6   r   r   r   rW      s    zHTMLUnicodeInputStream.resetc                 C   s   t |dr|}nt|}|S zvProduces a file object from source.

        source can be either a file object, local filename or a string.

        r4   )rD   r   r%   rH   r"   r   r   r   rU      s    
z!HTMLUnicodeInputStream.openStreamc                 C   sT   | j }|dd|}| j| }|dd|}|dkr@| j| }n||d  }||fS )N
r   r   r
   )r*   countr\   rfindr]   )r%   r.   r*   ZnLinesZpositionLineZlastLinePosZpositionColumnr   r   r   	_position   s    
z HTMLUnicodeInputStream._positionc                 C   s   |  | j\}}|d |fS )z:Returns (line, col) of the current position in the stream.r
   )rd   rZ   )r%   linecolr   r   r   r$      s    zHTMLUnicodeInputStream.positionc                 C   s6   | j | jkr|  stS | j }| j| }|d | _ |S )zo Read one character from the stream or queue if available. Return
            EOF when EOF is reached.
        r
   )rZ   rY   	readChunkr   r*   )r%   rZ   charr   r   r   rh      s    

zHTMLUnicodeInputStream.charNc                 C   s   |d kr| j }| | j\| _| _d| _d| _d| _| j|}| j	rX| j	| }d | _	n|s`dS t
|dkrt|d }|dksd|  krdkrn n|d | _	|d d }| jr| | |d	d
}|dd
}|| _t
|| _dS )NrX   r   Fr
   r         i  z
ra   T)_defaultChunkSizerd   rY   r\   r]   r*   rZ   rV   r4   r^   r(   ordrP   replace)r%   rY   r8   Zlastvr   r   r   rg      s0    
 


z HTMLUnicodeInputStream.readChunkc                 C   s(   t tt|D ]}| jd qd S )Ninvalid-codepoint)ranger(   invalid_unicode_refindallr[   r7   )r%   r8   _r   r   r   rQ   %  s    z*HTMLUnicodeInputStream.characterErrorsUCS4c                 C   s   d}t |D ]}|rqt| }| }t|||d  rrt|||d  }|tkrl| j	
d d}q|dkr|dkr|t|d kr| j	
d qd}| j	
d qd S )NF   ro   Trj   i  r
   )rq   finditerrm   groupstartr   ZisSurrogatePairZsurrogatePairToCodepointnon_bmp_invalid_codepointsr[   r7   r(   )r%   r8   skipmatchZ	codepointr)   Zchar_valr   r   r   rR   )  s"    z*HTMLUnicodeInputStream.characterErrorsUCS2Fc           
      C   s  zt ||f }W nh tk
rx   |D ]}t|dk s$tq$ddd |D }|sZd| }td|  }t ||f< Y nX g }|| j| j	}|dkr| j	| j
krqn0| }|| j
kr|| j| j	|  || _	q|| j| j	d  |  s~qq~d|}	|	S )z Returns a string of characters from the stream up to but not
        including any character in 'characters' or EOF. 'characters' must be
        a container that supports the 'in' method and iteration over its
        characters.
           rX   c                 S   s   g | ]}d t | qS )z\x%02x)rm   )r   cr   r   r   r   N  s     z5HTMLUnicodeInputStream.charsUntil.<locals>.<listcomp>z^%sz[%s]+N)charsUntilRegExKeyErrorrm   r-   r:   recompilerz   r*   rZ   rY   endr7   rg   )
r%   Z
charactersZoppositecharsr|   Zregexr;   mr   rr   r   r   
charsUntil@  s0     

z!HTMLUnicodeInputStream.charsUntilc                 C   sT   |d k	rP| j dkr.|| j | _|  jd7  _n"|  j d8  _ | j| j  |ksPtd S r'   )rZ   r*   rY   r-   )r%   rh   r   r   r   ungeto  s    
zHTMLUnicodeInputStream.unget)N)F)r<   r=   r>   r?   rl   r&   rW   rU   rd   r$   rh   rg   rQ   rR   r   r   r   r   r   r   rF      s    
&
/rF   c                   @   sL   e Zd ZdZdddZdd Zd	d
 ZdddZdd Zdd Z	dd Z
dS )rG   rK   Nwindows-1252Tc                 C   sn   |  || _t| | j d| _d| _|| _|| _|| _|| _	|| _
| || _| jd dk	sbt|   dS )rL   i   d   r   N)rU   	rawStreamrF   r&   numBytesMetanumBytesChardetoverride_encodingtransport_encodingsame_origin_parent_encodinglikely_encodingdefault_encodingdetermineEncodingrT   r-   rW   )r%   rH   r   r   r   r   r   Z
useChardetr   r   r   r&     s    zHTMLBinaryInputStream.__init__c                 C   s&   | j d j| jd| _t|  d S )Nr   rn   )rT   Z
codec_infostreamreaderr   rV   rF   rW   r6   r   r   r   rW     s    zHTMLBinaryInputStream.resetc                 C   sD   t |dr|}nt|}z||  W n   t|}Y nX |S r_   )rD   r   r0   r+   r!   r`   r   r   r   rU     s    
z HTMLBinaryInputStream.openStreamc                 C   s  |   df}|d d k	r|S t| jdf}|d d k	r:|S t| jdf}|d d k	rX|S |  df}|d d k	rt|S t| jdf}|d d k	r|d jds|S t| jdf}|d d k	r|S |rpzddl	m
} W n tk
r   Y nX g }| }|js<| j| j}t|tst|s&q<|| || q|  t|jd }| jd |d k	rp|dfS t| jdf}|d d k	r|S tddfS )NrN   r   Z	tentativezutf-16)UniversalDetectorencodingr   )	detectBOMrS   r   r   detectEncodingMetar   name
startswithr   Z%pip._vendor.chardet.universaldetectorr   ImportErrorZdoner   r4   r   rB   r3   r-   r7   Zfeedcloseresultr0   r   )r%   ZchardetrT   r   ZbuffersZdetectorr#   r   r   r   r   r     sR    

z'HTMLBinaryInputStream.determineEncodingc                 C   s   | j d dkstt|}|d kr&d S |jdkrFtd}|d k	stnT|| j d krf| j d df| _ n4| jd |df| _ |   td| j d |f d S )Nr
   rN   utf-16beutf-16lerM   r   zEncoding changed from %s to %s)rT   r-   rS   r   r   r0   rW   r   )r%   ZnewEncodingr   r   r   changeEncoding  s    

z$HTMLBinaryInputStream.changeEncodingc              
   C   s   t jdt jdt jdt jdt jdi}| jd}t|t	s<t
||dd }d}|s~||}d}|s~||dd	 }d	}|r| j| t|S | jd
 dS dS )zAttempts to detect at BOM at the start of the stream. If
        an encoding can be determined from the BOM return the name of the
        encoding otherwise return NonerM   r   r   zutf-32lezutf-32be   N   rt   r   )codecsBOM_UTF8BOM_UTF16_LEBOM_UTF16_BEBOM_UTF32_LEBOM_UTF32_BEr   r4   rB   r3   r-   getr0   rS   )r%   ZbomDictstringr   r0   r   r   r   r     s4           
zHTMLBinaryInputStream.detectBOMc                 C   sV   | j | j}t|tstt|}| j d | }|dk	rR|j	dkrRt
d}|S )z9Report the encoding declared by the meta element
        r   Nr   rM   )r   r4   r   rB   r3   r-   EncodingParserr0   getEncodingr   rS   )r%   r#   parserr   r   r   r   r   9  s    z(HTMLBinaryInputStream.detectEncodingMeta)NNNNr   T)T)r<   r=   r>   r?   r&   rW   rU   r   r   r   r   r   r   r   r   rG     s          
*
>"rG   c                   @   s   e Zd Z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eee
Zdd ZeeZefddZdd Zdd Zdd ZdS )EncodingByteszString-like object with an associated position and various extra methods
    If the position is ever greater than the string length then an exception is
    raisedc                 C   s   t |tstt| | S N)rB   r3   r-   __new__lowerr%   valuer   r   r   r   L  s    zEncodingBytes.__new__c                 C   s
   d| _ d S )Nr   )rd   r   r   r   r   r&   P  s    zEncodingBytes.__init__c                 C   s   | S r   r   r6   r   r   r   __iter__T  s    zEncodingBytes.__iter__c                 C   s>   | j d  }| _ |t| kr"tn|dk r.t| ||d  S )Nr
   r   rd   r(   StopIterationrE   r%   pr   r   r   __next__W  s    zEncodingBytes.__next__c                 C   s   |   S r   )r   r6   r   r   r   next_  s    zEncodingBytes.nextc                 C   sB   | j }|t| krtn|dk r$t|d  | _ }| ||d  S r'   r   r   r   r   r   previousc  s    zEncodingBytes.previousc                 C   s   | j t| krt|| _ d S r   rd   r(   r   )r%   r$   r   r   r   setPositionl  s    zEncodingBytes.setPositionc                 C   s*   | j t| krt| j dkr"| j S d S d S )Nr   r   r6   r   r   r   getPositionq  s
    
zEncodingBytes.getPositionc                 C   s   | | j | j d  S Nr
   )r$   r6   r   r   r   getCurrentByte{  s    zEncodingBytes.getCurrentBytec                 C   sH   | j }|t| k r>| ||d  }||kr4|| _|S |d7 }q|| _dS )zSkip past a list of charactersr
   Nr$   r(   rd   r%   r   r   r|   r   r   r   ry     s    
zEncodingBytes.skipc                 C   sH   | j }|t| k r>| ||d  }||kr4|| _|S |d7 }q|| _d S r   r   r   r   r   r   	skipUntil  s    
zEncodingBytes.skipUntilc                 C   s>   | j }| ||t|  }||}|r:|  j t|7  _ |S )zLook for a sequence of bytes at the start of a string. If the bytes
        are found return True and advance the position to the byte after the
        match. Otherwise return False and leave the position alone)r$   r(   r   )r%   r3   r   r8   r;   r   r   r   
matchBytes  s    
zEncodingBytes.matchBytesc                 C   sR   | | j d |}|dkrJ| jdkr,d| _|  j|t| d 7  _dS tdS )zLook for the next sequence of bytes matching a given sequence. If
        a match is found advance the position to the last byte of the matchNr   r   r
   T)r$   findrd   r(   r   )r%   r3   ZnewPositionr   r   r   jumpTo  s    
zEncodingBytes.jumpToN)r<   r=   r>   r?   r   r&   r   r   r   r   r   r   propertyr$   r   currentBytespaceCharactersBytesry   r   r   r   r   r   r   r   r   H  s    	
r   c                   @   sX   e Zd Z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S )r   z?Mini parser for detecting character encoding from meta elementsc                 C   s   t || _d| _dS )z3string - the data to work on for encoding detectionN)r   r8   r   r%   r8   r   r   r   r&     s    
zEncodingParser.__init__c              
   C   s   d| j fd| jfd| jfd| jfd| jfd| jff}| jD ]Z}d}|D ]D\}}| j|rFz| }W  qW qF tk
r   d}Y  qY qFX qF|s: qq:| jS )	Ns   <!--s   <metas   </s   <!s   <?r   TF)	handleComment
handleMetahandlePossibleEndTaghandleOtherhandlePossibleStartTagr8   r   r   r   )r%   ZmethodDispatchrs   ZkeepParsingkeymethodr   r   r   r     s(    

zEncodingParser.getEncodingc                 C   s   | j dS )zSkip over commentss   -->r8   r   r6   r   r   r   r     s    zEncodingParser.handleCommentc                 C   s   | j jtkrdS d}d }|  }|d kr,dS |d dkr\|d dk}|r|d k	r|| _dS q|d dkr|d }t|}|d k	r|| _dS q|d dkrtt|d }| }|d k	rt|}|d k	r|r|| _dS |}qd S )	NTFr   s
   http-equivr
   s   content-type   charsets   content)	r8   r   r   getAttributer   rS   ContentAttrParserr   parse)r%   Z	hasPragmaZpendingEncodingattrZtentativeEncodingcodecZcontentParserr   r   r   r     s8    zEncodingParser.handleMetac                 C   s
   |  dS )NF)handlePossibleTagr6   r   r   r   r     s    z%EncodingParser.handlePossibleStartTagc                 C   s   t | j | dS )NT)r   r8   r   r6   r   r   r   r     s    
z#EncodingParser.handlePossibleEndTagc                 C   sb   | j }|jtkr(|r$|  |   dS |t}|dkrD|  n|  }|d k	r^|  }qLdS )NTr   )r8   r   asciiLettersBytesr   r   r   spacesAngleBracketsr   )r%   ZendTagr8   r|   r   r   r   r   r     s    



z EncodingParser.handlePossibleTagc                 C   s   | j dS )Nr   r   r6   r   r   r   r     s    zEncodingParser.handleOtherc                 C   s  | j }|ttdgB }|dks2t|dks2t|dkr>dS g }g }|dkrV|rVqnX|tkrj| }qnD|dkrd|dfS |tkr||	  n|dkrdS || t
|}qF|dkr|  d|dfS t
| | }|dkrJ|}t
|}||kr"t
| d|d|fS |tkr<||	  q|| qnJ|d	krbd|dfS |tkr|||	  n|dkrdS || t
|}|tkrd|d|fS |tkr||	  n|dkrdS || qdS )
z_Return a name,value pair for the next attribute in the stream,
        if one is found, or None   /Nr
   )r   N   =)r   r   r9   )   '   "r   )r8   ry   r   	frozensetr(   r-   r:   asciiUppercaseBytesr7   r   r   r   r   )r%   r8   r|   ZattrNameZ	attrValueZ	quoteCharr   r   r   r     sb    











zEncodingParser.getAttributeN)r<   r=   r>   r?   r&   r   r   r   r   r   r   r   r   r   r   r   r   r     s   $r   c                   @   s   e Zd Zdd Zdd ZdS )r   c                 C   s   t |tst|| _d S r   )rB   r3   r-   r8   r   r   r   r   r&   f  s    zContentAttrParser.__init__c                 C   s   z| j d | j  jd7  _| j   | j jdks<W d S | j  jd7  _| j   | j jdkr| j j}| j  jd7  _| j j}| j |r| j || j j W S W d S nR| j j}z"| j t | j || j j W W S  tk
 r   | j |d   Y W S X W n tk
r   Y d S X d S )Nr   r
   r   )r   r   )r8   r   r$   ry   r   r   r   r   )r%   Z	quoteMarkZoldPositionr   r   r   r   j  s.    

zContentAttrParser.parseN)r<   r=   r>   r&   r   r   r   r   r   r   e  s   r   c                 C   sf   t | tr0z| d} W n tk
r.   Y dS X | dk	r^zt| W S  tk
rZ   Y dS X ndS dS )z{Return the python codec name corresponding to an encoding or None if the
    string doesn't correspond to a valid encoding.r   N)rB   r   decodeUnicodeDecodeErrorr	   lookupAttributeError)r   r   r   r   rS     s    

rS   )4Z
__future__r   r   r   Zpip._vendor.sixr   r   Zpip._vendor.six.movesr   r   r   r   Zpip._vendorr	   Z	constantsr   r   r   r   r   rX   r   ior   r   r   r   r   r   r   r   Zinvalid_unicode_no_surrogaterO   rb   r-   r   evalrq   setrx   Zascii_punctuation_rer}   objectr!   rJ   rF   rG   r3   r   r   r   rS   r   r   r   r   <module>   s   
"
                     
J g Ih 6'