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3
Pf              )   @   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 y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 r(ej!eddF e"d d Z#n
ej!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.d/d0d1d2d3d4g Z%ej!d5Z&i Z'G d6d7 d7e(Z)d8d9 Z*G d:d; d;e(Z+G d<d= d=e+Z,G d>d? d?e-Z.G d@dA dAe(Z/G dBdC dCe(Z0dDdE Z1d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 | ]}|j d qS )ascii)encode).0item r   "/usr/lib/python3.6/_inputstream.py
<listcomp>   s    r   c             C   s   g | ]}|j d qS )r   )r   )r   r   r   r   r   r      s    c             C   s   g | ]}|j d qS )r   )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}x(| j d | jd  D ]}|t|7 }qW || jd 7 }|S )Nr   r
   )r    r!   len)r"   poschunkr   r   r   tellE   s
    zBufferedStream.tellc             C   sH   |}d}x0t | j| |k r8|t | j| 8 }|d7 }q
W ||g| _d S )Nr   r
   )r$   r    r!   )r"   r%   offsetir   r   r   seekL   s    zBufferedStream.seekc             C   sT   | j s| j|S | jd t| j krF| jd t| j d krF| j|S | j|S d S )Nr   r
   r   )r    _readStreamr!   r$   _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$   )r   r   r   r   r   r   _   s    z1BufferedStream._bufferedBytes.<locals>.<listcomp>)sumr    )r"   r   r   r   _bufferedBytes^   s    zBufferedStream._bufferedBytesc             C   s<   | j j|}| jj| | jd  d7  < t|| jd< |S )Nr   r
   )r   r.   r    appendr!   r$   )r"   r-   datar   r   r   r+   a   s
    zBufferedStream._readStreamc             C   s   |}g }| j d }| j d }x|t| jk r|dkr| j| }|t|| krb|}||| g| _ n"t|| }|t|g| _ |d7 }|j||||   ||8 }d}qW |r|j| j| dj|S )Nr   r
       )r!   r$   r    r1   r+   join)r"   r-   ZremainingBytesrvZbufferIndexZbufferOffsetZbufferedDataZbytesToReadr   r   r   r,   h   s$    


zBufferedStream._readFromBufferN)__name__
__module____qualname____doc__r#   r'   r*   r.   r0   r+   r,   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 | jdt	}n
t | t	}|rdd |D }|rvt
d| t| f|S t| f|S d S )NFr.   r   c             S   s   g | ]}|j 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hasattrr.   r   	TypeErrorHTMLUnicodeInputStreamHTMLBinaryInputStream)sourcekwargsZ	isUnicodeZ	encodingsr   r   r   HTMLInputStream   s    

rD   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 )r@   zProvides 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| _| j	|| _
| j  dS )a  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   zutf-8certain)r   supports_lone_surrogatesreportCharacterErrorsr$   characterErrorsUCS4characterErrorsUCS2ZnewLineslookupEncodingcharEncoding
openStream
dataStreamreset)r"   rB   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_bufferedCharacter)r"   r   r   r   rN      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.

        r.   )r>   r   )r"   rB   r   r   r   r   rL      s    
z!HTMLUnicodeInputStream.openStreamc             C   sT   | j }|jdd|}| j| }|jdd|}|dkr@| j| }n||d  }||fS )N
r   r
   r   )r&   countrS   rfindrT   )r"   r(   r&   ZnLinesZpositionLineZlastLinePosZpositionColumnr   r   r   	_position   s    
z HTMLUnicodeInputStream._positionc             C   s   | j | j\}}|d |fS )z:Returns (line, col) of the current position in the stream.r
   )rY   rQ   )r"   linecolr   r   r   r!      s    zHTMLUnicodeInputStream.positionc             C   s6   | j | jkr| j 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
   )rQ   rP   	readChunkr   r&   )r"   rQ   charr   r   r   r]      s    

zHTMLUnicodeInputStream.charNc             C   s   |d kr| j }| j| j\| _| _d| _d| _d| _| jj|}| j	rX| j	| }d | _	n|s`dS t
|dkrt|d }|dksd|  kodkn  r|d | _	|d d }| jr| j| |jdd	}|jd
d	}|| _t
|| _dS )NrO   r   Fr
      i   i  z
rV   Tr   r   r   )_defaultChunkSizerY   rP   rS   rT   r&   rQ   rM   r.   rU   r$   ordrG   replace)r"   rP   r2   Zlastvr   r   r   r\      s0    
 


z HTMLUnicodeInputStream.readChunkc             C   s,   x&t ttj|D ]}| jjd qW d S )Nzinvalid-codepoint)ranger$   invalid_unicode_refindallrR   r1   )r"   r2   _r   r   r   rH   %  s    z*HTMLUnicodeInputStream.characterErrorsUCS4c             C   s   d}xt j|D ]}|rqt|j }|j }tj|||d  rttj|||d  }|tkrn| j	j
d d}q|dkr|dkr|t|d kr| j	j
d qd}| j	j
d qW d S )NF   zinvalid-codepointTi   i  r
   )rd   finditerra   groupstartr   ZisSurrogatePairZsurrogatePairToCodepointnon_bmp_invalid_codepointsrR   r1   r$   )r"   r2   skipmatchZ	codepointr%   Zchar_valr   r   r   rI   )  s     z*HTMLUnicodeInputStream.characterErrorsUCS2Fc       	      C   s   yt ||f }W nN tk
r^   djdd |D }|s@d| }tjd|  }t ||f< Y nX g }x||j| j| j}|dkr| j| jkrP n0|j	 }|| jkr|j
| j| j|  || _P |j
| j| jd  | j sfP qfW dj|}|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.
        rO   c             S   s   g | ]}d t | qS )z\x%02x)ra   )r   cr   r   r   r   N  s    z5HTMLUnicodeInputStream.charsUntil.<locals>.<listcomp>z^%sz[%s]+N)charsUntilRegExKeyErrorr4   recompilerm   r&   rQ   rP   endr1   r\   )	r"   Z
charactersZoppositecharsZregexr5   mrs   rr   r   r   
charsUntil@  s.     

z!HTMLUnicodeInputStream.charsUntilc             C   s@   |d k	r<| j dkr.|| j | _|  jd7  _n|  j d8  _ d S )Nr   r
   )rQ   r&   rP   )r"   r]   r   r   r   ungeto  s    
zHTMLUnicodeInputStream.unget)N)F)r6   r7   r8   r9   r`   r#   rN   rL   rY   r!   r]   r\   rH   rI   rw   rx   r   r   r   r   r@      s    
&
/r@   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 )rA   zProvides 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.

    Nwindows-1252Tc             C   s\   | j || _tj| | j d| _d| _|| _|| _|| _|| _	|| _
| j|| _| j  dS )a  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)

        i   d   N)rL   	rawStreamr@   r#   numBytesMetanumBytesChardetoverride_encodingtransport_encodingsame_origin_parent_encodinglikely_encodingdefault_encodingdetermineEncodingrK   rN   )r"   rB   r~   r   r   r   r   Z
useChardetr   r   r   r#     s    zHTMLBinaryInputStream.__init__c             C   s&   | j d jj| jd| _tj|  d S )Nr   rb   )rK   Z
codec_infostreamreaderr{   rM   r@   rN   )r"   r   r   r   rN     s    zHTMLBinaryInputStream.resetc          	   C   sD   t |dr|}nt|}y|j|j  W n   t|}Y nX |S )zvProduces a file object from source.

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

        r.   )r>   r   r*   r'   r   )r"   rB   r   r   r   r   rL     s    
z HTMLBinaryInputStream.openStreamc             C   s  | j  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 | j df}|d d k	rt|S t| jdf}|d d k	r|d jjd r|S t| jdf}|d d k	r|S |rdyddl	m
} W n tk
r   Y nxX g }| }x6|js.| jj| j}|sP |j| |j| qW |j  t|jd }| jjd |d k	rd|dfS t| jdf}|d d k	r|S tddfS )NrE   r   Z	tentativezutf-16)UniversalDetectorencodingzwindows-1252)	detectBOMrJ   r~   r   detectEncodingMetar   name
startswithr   Zchardet.universaldetectorr   ImportErrordoner{   r.   r}   r1   Zfeedcloseresultr*   r   )r"   ZchardetrK   r   ZbuffersZdetectorr    r   r   r   r   r     sP    


z'HTMLBinaryInputStream.determineEncodingc             C   s   t |}|d krd S |jdkr(t d}nT|| jd krH| jd df| _n4| jjd |df| _| j  td| jd |f d S )Nutf-16beutf-16lezutf-8r   rE   zEncoding changed from %s to %s)r   r   )rJ   r   rK   r{   r*   rN   r   )r"   ZnewEncodingr   r   r   changeEncoding  s    

z$HTMLBinaryInputStream.changeEncodingc          
   C   s   t jdt jdt jdt jdt jdi}| jjd}|j|dd }d}|sp|j|}d}|sp|j|dd	 }d	}|r| jj	| t
|S | jj	d
 dS dS )zAttempts to detect at BOM at the start of the stream. If
        an encoding can be determined from the BOM return the name of the
        encoding otherwise return Nonezutf-8zutf-16lezutf-16bezutf-32lezutf-32be   N   rg   r   )codecsBOM_UTF8BOM_UTF16_LEBOM_UTF16_BEBOM_UTF32_LEBOM_UTF32_BEr{   r.   getr*   rJ   )r"   ZbomDictstringr   r*   r   r   r   r     s"    
zHTMLBinaryInputStream.detectBOMc             C   sH   | j j| j}t|}| j jd |j }|dk	rD|jdkrDtd}|S )z9Report the encoding declared by the meta element
        r   Nutf-16beutf-16lezutf-8)r   r   )r{   r.   r|   EncodingParserr*   getEncodingr   rJ   )r"   r    parserr   r   r   r   r   9  s    z(HTMLBinaryInputStream.detectEncodingMeta)NNNNry   T)T)r6   r7   r8   r9   r#   rN   rL   r   r   r   r   r   r   r   r   rA     s     
(
>"rA   c               @   s   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	dd Z
dd Zeee
Zdd ZeeZefddZdd Zdd Zdd ZdS )EncodingByteszString-like object with an associated position and various extra methods
    If the position is ever greater than the string length then an exception is
    raisedc             C   s   t j| |j S )N)r-   __new__lower)r"   valuer   r   r   r   L  s    zEncodingBytes.__new__c             C   s
   d| _ d S )Nr
   r   )rY   )r"   r   r   r   r   r#   P  s    zEncodingBytes.__init__c             C   s   | S )Nr   )r"   r   r   r   __iter__T  s    zEncodingBytes.__iter__c             C   s>   | j d  }| _ |t| kr"tn|dk r.t| ||d  S )Nr
   r   )rY   r$   StopIterationr?   )r"   pr   r   r   __next__W  s    zEncodingBytes.__next__c             C   s   | j  S )N)r   )r"   r   r   r   next_  s    zEncodingBytes.nextc             C   sB   | j }|t| krtn|dk r$t|d  | _ }| ||d  S )Nr   r
   )rY   r$   r   r?   )r"   r   r   r   r   previousc  s    zEncodingBytes.previousc             C   s   | j t| krt|| _ d S )N)rY   r$   r   )r"   r!   r   r   r   setPositionl  s    zEncodingBytes.setPositionc             C   s*   | j t| krt| j dkr"| j S d S d S )Nr   )rY   r$   r   )r"   r   r   r   getPositionq  s
    
zEncodingBytes.getPositionc             C   s   | | j | j d  S )Nr
   )r!   )r"   r   r   r   getCurrentByte{  s    zEncodingBytes.getCurrentBytec             C   sL   | j }x:|t| k r@| ||d  }||kr6|| _|S |d7 }qW || _dS )zSkip past a list of charactersr
   N)r!   r$   rY   )r"   rt   r   rn   r   r   r   rl     s    zEncodingBytes.skipc             C   sL   | j }x:|t| k r@| ||d  }||kr6|| _|S |d7 }qW || _d S )Nr
   )r!   r$   rY   )r"   rt   r   rn   r   r   r   	skipUntil  s    zEncodingBytes.skipUntilc             C   s>   | j }| ||t|  }|j|}|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$   r   )r"   r-   r   r2   r5   r   r   r   
matchBytes  s    
zEncodingBytes.matchBytesc             C   sR   | | j d j|}|dkrJ| jdkr,d| _|  j|t| d 7  _dS tdS )zLook for the next sequence of bytes matching a given sequence. If
        a match is found advance the position to the last byte of the matchNr
   r   Tr   r   )r!   findrY   r$   r   )r"   r-   ZnewPositionr   r   r   jumpTo  s    
zEncodingBytes.jumpToN)r6   r7   r8   r9   r   r#   r   r   r   r   r   r   propertyr!   r   currentBytespaceCharactersBytesrl   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   r2   r   )r"   r2   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}x^| jD ]T}d}xD|D ]<\}}| jj|rJy| }P W qJ tk
r   d}P Y qJX qJW |s<P q<W | jS )	Ns   <!--s   <metas   </s   <!s   <?r   TF)	handleComment
handleMetahandlePossibleEndTaghandleOtherhandlePossibleStartTagr2   r   r   r   )r"   ZmethodDispatchrf   ZkeepParsingkeymethodr   r   r   r     s&    zEncodingParser.getEncodingc             C   s   | j jdS )zSkip over commentss   -->)r2   r   )r"   r   r   r   r     s    zEncodingParser.handleCommentc             C   s   | j jtkrdS d}d }x| j }|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 }|j }|d k	rt|}|d k	r|r|| _dS |}qW d S )	NTFr   s
   http-equivr
   s   content-types   charsets   content)	r2   r   r   getAttributer   rJ   ContentAttrParserr   parse)r"   Z	hasPragmaZpendingEncodingattrZtentativeEncodingcodecZcontentParserr   r   r   r     s:    zEncodingParser.handleMetac             C   s
   | j dS )NF)handlePossibleTag)r"   r   r   r   r     s    z%EncodingParser.handlePossibleStartTagc             C   s   t | j | jdS )NT)r   r2   r   )r"   r   r   r   r     s    
z#EncodingParser.handlePossibleEndTagc             C   sf   | j }|jtkr(|r$|j  | j  dS |jt}|dkrD|j  n| j }x|d k	r`| j }qNW dS )NTr   )r2   r   asciiLettersBytesr   r   r   spacesAngleBracketsr   )r"   ZendTagr2   rn   r   r   r   r   r     s    



z EncodingParser.handlePossibleTagc             C   s   | j jdS )Nr   )r2   r   )r"   r   r   r   r     s    zEncodingParser.handleOtherc             C   s  | j }|jttdgB }|dkr&dS g }g }xt|dkr@|r@P nX|tkrT|j }P nD|d	krjdj|dfS |tkr|j|j  n|dkrdS |j| t|}q0W |dkr|j	  dj|dfS t| |j }|d
kr:|}xt|}||krt| dj|dj|fS |tkr*|j|j  q|j| qW nJ|dkrRdj|dfS |tkrl|j|j  n|dkrzdS |j| x^t|}|t
krdj|dj|fS |tkr|j|j  n|dkrdS |j| qW dS )z_Return a name,value pair for the next attribute in the stream,
        if one is found, or None   /r   N   =r3      '   ")r   N)r   r   )r   r   )r2   rl   r   	frozensetr4   asciiUppercaseBytesr1   r   r   r   r   )r"   r2   rn   ZattrNameZ	attrValueZ	quoteCharr   r   r   r     sf    










zEncodingParser.getAttributeN)r6   r7   r8   r9   r#   r   r   r   r   r   r   r   r   r   r   r   r   r     s   $r   c               @   s   e Zd Zdd Zdd ZdS )r   c             C   s
   || _ d S )N)r2   )r"   r2   r   r   r   r#   f  s    zContentAttrParser.__init__c             C   s  y| j jd | j  jd7  _| j j  | j jdks8d S | j  jd7  _| j j  | j jdkr| j j}| j  jd7  _| j j}| j j|r| j || j j S d S nF| j j}y| j jt | j || j j S  tk
r   | j |d  S X W n tk
r    d S X d S )Ns   charsetr
   r   r   r   )r   r   )r2   r   r!   rl   r   r   r   r   )r"   Z	quoteMarkZoldPositionr   r   r   r   j  s.    

zContentAttrParser.parseN)r6   r7   r8   r#   r   r   r   r   r   r   e  s   r   c             C   s`   t | tr.y| jd} W n tk
r,   dS X | dk	rXy
tj| S  tk
rT   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)r<   r   decodeUnicodeDecodeErrorr	   lookupAttributeError)r   r   r   r   rJ     s    

rJ   r   )2Z
__future__r   r   r   Zpip._vendor.sixr   r   Zpip._vendor.six.movesr   r   r   rq   Zpip._vendorr	   Z	constantsr   r   r   r   r   rO   r   ior   r   r   r   r   r   r   r   Zinvalid_unicode_no_surrogaterF   rr   evalrd   setrk   Zascii_punctuation_rero   objectr   rD   r@   rA   r-   r   r   r   rJ   r   r   r   r   <module>   sV   









J g Ih 6'