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html_annotatethtmldiff(tescapecCsdtt|�d�|fS(Ns<span title="%s">%s</span>i(thtml_escapet_unicode(ttexttversion((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pytdefault_markupscCs�g|D]\}}t||�^q}|d}x%|dD]}t||�|}q=Wt|�}t||�}dj|�j�S(s
    doclist should be ordered from oldest to newest, like::

        >>> version1 = 'Hello World'
        >>> version2 = 'Goodbye World'
        >>> print(html_annotate([(version1, 'version 1'),
        ...                      (version2, 'version 2')]))
        <span title="version 2">Goodbye</span> <span title="version 1">World</span>

    The documents must be *fragments* (str/UTF8 or unicode), not
    complete documents

    The markup argument is a function to markup the spans of words.
    This function is called like markup('Hello', 'version 2'), and
    returns HTML.  The first argument is text and never includes any
    markup.  The default uses a span with a title:

        >>> print(default_markup('Some Text', 'by Joe'))
        <span title="by Joe">Some Text</span>
    iit(ttokenize_annotatedthtml_annotate_merge_annotationstcompress_tokenstmarkup_serialize_tokenstjointstrip(tdoclisttmarkuptdocRt	tokenlistt
cur_tokensttokenstresult((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRs%

cCs0t|dt�}x|D]}||_qW|S(sFTokenize a document and add an annotation attribute to each token
    t
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annotation(RRRttok((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRGs

cCs{td|d|�}|j�}xS|D]K\}}}}}|dkr(|||!}	|||!}
t|	|
�q(q(WdS(s�Merge the annotations from tokens_old into tokens_new, when the
    tokens in the new document already existed in the old document.
    tatbtequalN(tInsensitiveSequenceMatchertget_opcodestcopy_annotations(t
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tokens_newtstcommandstcommandti1ti2tj1tj2teq_oldteq_new((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyROs

cCsNt|�t|�kst�x)t||�D]\}}|j|_q.WdS(sN
    Copy annotations from the tokens listed in src to the tokens in dest
    N(tlentAssertionErrortzipR(tsrctdesttsrc_toktdest_tok((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR"\scCsq|dg}x]|dD]Q}|djr\|jr\|dj|jkr\t||�q|j|�qW|S(sm
    Combine adjacent tokens when there is no HTML between the tokens, 
    and they share an annotation
    iii����(t	post_tagstpre_tagsRtcompress_merge_backtappend(RRR((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR
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c	Cs�|d}t|�tk	s.t|�tk	r>|j|�nit|�}|jr`|d7}n||7}t|d|jd|jd|j�}|j|_||d<dS(sY Merge tok into the last element of tokens (modifying the list of
    tokens in-place).  i����t R6R5ttrailing_whitespaceN(ttypettokenR8RR:R6R5R(RRtlastRtmerged((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR7ss
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			ccs�xy|D]q}x|jD]}|VqW|j�}|||j�}|jrZ|d7}n|Vx|jD]}|VqiWqWdS(sz
    Serialize the list of tokens into a list of text chunks, calling
    markup_func around text to add annotations.
    R9N(R6thtmlRR:R5(Rtmarkup_funcR<tpreR?tpost((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR�s
		
cCsFt|�}t|�}t||�}dj|�j�}t|�S(s� Do a diff of the old and new document.  The documents are HTML
    *fragments* (str/UTF8 or unicode), they are not complete documents
    (i.e., no <html> tag).

    Returns HTML with <ins> and <del> tags added around the
    appropriate text.  

    Markup is generally ignored, with the markup from new_html
    preserved, and possibly some markup from old_html (though it is
    considered acceptable to lose some of the old markup).  Only the
    words in the HTML are diffed.  The exception is <img> tags, which
    are treated like words, and the href attribute of <a> tags, which
    are noted inside the tag itself when there are changes.
    R
(Rthtmldiff_tokensRRtfixup_ins_del_tags(told_htmltnew_htmltold_html_tokenstnew_html_tokensR((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR�s
cCs�td|d|�}|j�}g}x�|D]�\}}}}}	|dkru|jt|||	!dt��q.n|dks�|dkr�t|||	!�}
t|
|�n|dks�|dkr.t|||!�}t||�q.q.Wt|�}|S(s] Does a diff on the tokens themselves, returning a list of text
    chunks (not tokens).
    RRRtinserttreplacetdelete(R R!textendt
expand_tokenstTruetmerge_inserttmerge_deletetcleanup_delete(thtml1_tokensthtml2_tokensR%R&RR'R(R)R*R+t
ins_tokenst
del_tokens((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRC�s ccs�xz|D]r}x|jD]}|VqW|s7|jr`|jrR|j�dVq`|j�Vnx|jD]}|VqjWqWdS(seGiven a list of tokens, return a generator of the chunks of
    text for the data in the tokens.
    R9N(R6thide_when_equalR:R?R5(RRR<RARB((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRM�s
		cCs�t|�\}}}|j|�|rO|djd�rO|dcd7<n|jd�|r�|djd�r�|dd |d<n|j|�|jd�|j|�dS(s| doc is the already-handled document (as a list of text chunks);
    here we add <ins>ins_chunks</ins> to the end of that.  i����R9s<ins>s</ins> N(tsplit_unbalancedRLtendswithR8(t
ins_chunksRtunbalanced_starttbalancedtunbalanced_end((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRO�s



t	DEL_STARTcBseZRS((t__name__t
__module__(((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR]�stDEL_ENDcBseZRS((R^R_(((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR`�st	NoDeletescBseZdZRS(sY Raised when the document no longer contains any pending deletes
    (DEL_START/DEL_END) (R^R_t__doc__(((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRascCs+|jt�|j|�|jt�dS(s� Adds the text chunks in del_chunks to the document doc (another
    list of text chunks) with marker to show it is a delete.
    cleanup_delete later resolves these markers into <del> tags.N(R8R]RLR`(t
del_chunksR((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRPs

cCsxyt|�\}}}Wntk
r0PnXt|�\}}}t|||�t|||�|}|r�|djd�r�|dcd7<n|jd�|r�|djd�r�|dd |d<n|j|�|jd�|j|�|}q|S(s� Cleans up any DEL_START/DEL_END markers in the document, replacing
    them with <del></del>.  To do this while keeping the document
    valid, it may need to drop some tags (either start or end tags).

    It may also move the del into adjacent tags to try to move it to a
    similar location where it was originally located (e.g., moving a
    delete into preceding <div> tag, if the del looks like (DEL_START,
    'Text</div>', DEL_END)i����R9s<del>s</del> (tsplit_deleteRaRWtlocate_unbalanced_starttlocate_unbalanced_endRXR8RL(tchunkst
pre_deleteRKtpost_deleteRZR[R\R((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRQs&	




	c
Cs�g}g}g}g}xE|D]=}|jd�sG|j|�qn|ddk}|j�djd�}|tkr�|j|�qn|r3|r�|dd|kr�|j|�|j�\}}}	|	||<q\|r#|jg|D]\}}}	|	^q��g}|j|�q\|j|�q|j|t|�|f�|jd�qW|jg|D]\}}}|^qm�g|D]}|dk	r�|^q�}|||fS(s]Return (unbalanced_start, balanced, unbalanced_end), where each is
    a list of text and tag chunks.

    unbalanced_start is a list of all the tags that are opened, but
    not closed in this span.  Similarly, unbalanced_end is a list of
    tags that are closed but were not opened.  Extracting these might
    mean some reordering of the chunks.t<it/is<>/i����N(	t
startswithR8tsplitRt
empty_tagstpopRLR.tNone(
Rgtstarttendt	tag_stackR[tchunktendtagtnametposttag((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRW5s:




)#%cCs`y|jt�}Wntk
r,t�nX|jt�}|| ||d|!||dfS(s� Returns (stuff_before_DEL_START, stuff_inside_DEL_START_END,
    stuff_after_DEL_END).  Returns the first case found (there may be
    more DEL_STARTs in stuff_after_DEL_END).  Raises NoDeletes if
    there's no DEL_START found. i(tindexR]t
ValueErrorRaR`(RgRwtpos2((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyRd]s
cCs�x�|s
Pn|d}|j�djd�}|s:Pn|d}|tks`|jd�rdPn|ddkrxPn|j�djd�}|dkr�Pn|dks�td|��||kr�|jd�|j|jd��qPqd	S(
s� pre_delete and post_delete implicitly point to a place in the
    document (where the two were split).  This moves that point (by
    popping items from one and pushing them onto the other).  It moves
    the point to try to find a place where unbalanced_start applies.

    As an example::

        >>> unbalanced_start = ['<div>']
        >>> doc = ['<p>', 'Text', '</p>', '<div>', 'More Text', '</div>']
        >>> pre, post = doc[:3], doc[3:]
        >>> pre, post
        (['<p>', 'Text', '</p>'], ['<div>', 'More Text', '</div>'])
        >>> locate_unbalanced_start(unbalanced_start, pre, post)
        >>> pre, post
        (['<p>', 'Text', '</p>', '<div>'], ['More Text', '</div>'])

    As you can see, we moved the point so that the dangling <div> that
    we found will be effectively replaced by the div in the original
    document.  If this doesn't work out, we just throw away
    unbalanced_start without doing anything.
    is<>RjiRktinstdelsUnexpected delete tag: %rN(RmRR]RlR/RoR8(RZRhRitfindingtfinding_nametnextRv((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyReis*



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Pn|d}|j�djd�}|s:Pn|d}|tks`|jd�rdPn|j�djd�}|dks�|dkr�Pn||kr�|j�|jd|j��qPqdS(st like locate_unbalanced_start, except handling end tags and
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R<cBs8eZdZeZdded�Zd�Zd�ZRS(s8 Represents a diffable token, generally a word that is displayed to
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    (post_tags).  Some exceptions occur when there are empty tags
    adjacent to a word, so there may be close tags in pre_tags, or
    open tags in post_tags.

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    whitespace, even though we do not want to treat the word as
    equivalent to a similar word that does not have a trailing
    space.cCsatj||�}|dk	r*||_n	g|_|dk	rK||_n	g|_||_|S(N(Rt__new__RpR6R5R:(tclsRR6R5R:tobj((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR��s			cCs dtj|�|j|jfS(Nstoken(%s, %r, %r)(Rt__repr__R6R5(tself((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR��scCs
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href_tokencBseZdZeZd�ZRS(sh Represents the href in an anchor tag.  Unlike other words, we only
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    Parse the given HTML and returns token objects (words with attached tags).

    This parses only the content of a page; anything in the head is
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    optional.  The content is then parsed by lxml, which ensures the
    validity of the resulting parsed document (though lxml may make
    incorrect guesses when the markup is particular bad).

    <ins> and <del> tags are also eliminated from the document, as
    that gets confusing.

    If include_hrefs is true, then the href attribute of <a> tags is
    included as a special kind of diffable token.tcleanuptskip_tagR(Rt	iselementt
parse_htmlRNt
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    Parses an HTML fragment, returning an lxml element.  Note that the HTML will be
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    rid of any <ins> and <del> tags.
    t
create_parent(tcleanup_htmlRRN(R?R�((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR�ss	<body.*?>s
</body.*?>s</?(ins|del).*?>cCsftj|�}|r(||j�}ntj|�}|rP||j� }ntjd|�}|S(s� This 'cleans' the HTML, meaning that any page structure is removed
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|�Vt|j�}x|D]}t|�Vq7WndS(s Takes an lxml element el, and generates all the text chunks for
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    not returned (just its contents).R�R1NRRR�(Rxtgett	start_tagRnRR.ttailtsplit_wordsRR�tend_tag(telRR�tstart_wordstwordtchildtitemt	end_words((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR��s& 0


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cCsi|s|j�rgSg|j�j�D]}|d^q+}tj|�se|dd |d<n|S(sk Splits some text into words. Includes trailing whitespace (one
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s</%s>%s(R�tstart_whitespace_reR�Rx(R�textra((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR��s	cCs|jd�S(NRj(Rl(R((s4/usr/lib64/python2.7/site-packages/lxml/html/diff.pyR��scCs
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cCs}t|t�s td|��tj|dddt�}|ru||jd�d}||jd� }|j�S|SdS(	s� Serialize a single lxml element as HTML.  The serialized form
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		#		cCs&|j�}|jpd}|jryt|�s@||j7}qy|djrf|dj|j7_qy|j|d_n|j|�}|r|dkr�d}n||d}|dkr�|jr�|j|7_q||_q|jr�|j|7_q||_n|j�|||d+dS(s�
    Removes an element, but merges its contents into its place, e.g.,
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