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expatbuilder.cpython-38.pyc
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Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Z d5d6� Z d7d8� Z d9d:� Z dS )<� ExpatBuilderzPDocument builder that uses Expat to build a ParsedXML.DOM document instance.Nc C sP |d krt �� }|| _| jjd k r2t| jj�| _n d | _t| _d | _| � � d S r ) r ZOptions�_options�filter�FilterVisibilityController�_filterr �_finish_start_element�_parser�reset)r �optionsr r r r � s zExpatBuilder.__init__c C s t �� S )zCreate a new parser object.)r � ParserCreater r r r � createParser� s zExpatBuilder.createParserc C sF | j s@| �� | _ | j jj| _d| j _d| j _d| j _| �| j � | j S )z7Return the parser object, creating a new one if needed.T) rP rT rD � setdefaultr7 Z buffer_textZordered_attributesZspecified_attributes�installr r r r � getParser� s zExpatBuilder.getParserc C s, t �tdd�| _| j| _| jj| _d| _dS )z6Free all data structures used during DOM construction.NF)�theDOMImplementationZcreateDocumentr �document�curNode� _elem_info�_cdatar r r r rQ � s � zExpatBuilder.resetc C s� | j |_| j|_| j|_| 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r. �defaultZrequiredr' r r r rw � s �z!ExpatBuilder.attlist_decl_handlerc C s2 || j _|| j _|dkr.|r&d| j _nd| j _d S )Nr TF)rY �version�encoding� standalone)r r� r� r� r r r ru � s z ExpatBuilder.xml_decl_handler)N) r3 r4 r5 �__doc__r rT rW rQ rV r� r� r~ r] r� rc rp rr re rg rj rl rn rs r_ r� rO ra r� r� rv rw ru r r r r rJ � s: rJ c @ s� e Zd ZdZdZdd� Zdd� Zdd� Zej e j ej e j eje jeje jeje jeje jeje jeje jeje jej e j ej e j ej e j!i Z"d S ) rM zoWrapper around a DOMBuilderFilter which implements the checks to make the whatToShow filter attribute work.�rL c C s || _ d S r r� )r rL r r r r � s z#FilterVisibilityController.__init__c C sT | j |j }| jj|@ rL| j�|�}|tkr0t�|tkrHtdt |� ��|S t S d S )Nz)startContainer() returned illegal value: ) �_nodetype_maskr� rL � whatToShowr� �FILTER_INTERRUPTr �_ALLOWED_FILTER_RETURNSrA �reprr� )r r� �mask�valr r r r� � s �z)FilterVisibilityController.startContainerc C s� | j |j }| jj|@ r|| j�|�}|tkr0t�|tkr`|j}|j d d � D ]}|� |� qLt S |t krxt dt|� ��|S tS d S )Nz%acceptNode() returned illegal value: )r� r� rL r� r� r� r r� r� r� Z appendChildr� r� rA r� r� )r r� r� r� �parentr� r r r r� � s �z%FilterVisibilityController.acceptNodeN)#r3 r4 r5 r� r6 r r� r� r Z ELEMENT_NODEr Z SHOW_ELEMENTZATTRIBUTE_NODEZSHOW_ATTRIBUTEr� Z SHOW_TEXTr� ZSHOW_CDATA_SECTIONZENTITY_REFERENCE_NODEZSHOW_ENTITY_REFERENCEZ ENTITY_NODEZ SHOW_ENTITYZPROCESSING_INSTRUCTION_NODEZSHOW_PROCESSING_INSTRUCTIONZ COMMENT_NODEZ SHOW_COMMENT� DOCUMENT_NODEZ SHOW_DOCUMENTZDOCUMENT_TYPE_NODEZSHOW_DOCUMENT_TYPEZDOCUMENT_FRAGMENT_NODEZSHOW_DOCUMENT_FRAGMENTZ NOTATION_NODEZ SHOW_NOTATIONr� r r r r rM � s< �rM c @ s e Zd ZdZdd� ZdS )� FilterCrutch)�_builder�_level� _old_start�_old_endc C s6 d| _ || _|j}|j| _|j| _| j|_| j|_d S r� ) r� r� rP r` r� rb r� r� ra )r r8 ry r r r r s zFilterCrutch.__init__N)r3 r4 r5 r6 r r r r r r� s r� c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) r� r c C s, t �| |� |j}dD ]}t||d � qd S )N)rd rk rq rm ro rt )r� r rP �setattr)r r8 ry rB r r r r s zRejecter.__init__c G s | j d | _ d S r� )r� �r �argsr r r r� s z Rejecter.start_element_handlerc G s@ | j dkr0| jj}| j�|� | j|_| j|_n | j d | _ d S �Nr r! )r� r� rP rV r� r` r� rb )r r� ry r r r ra s z Rejecter.end_element_handlerN)r3 r4 r5 r6 r r� ra r r r r r� s r� c @ s e Zd ZdZdd� Zdd� ZdS )r� r c G s. | j j}| j|� | j j|k r*| jd | _d S r� )r� rZ r� r� )r r� r� r r r r� - s z Skipper.start_element_handlerc G sD | j dkr*| j| jj_| j| jj_d | _n| j d | _ | j|� d S r� )r� r� r� rP r` r� rb r� r r r ra 3 s zSkipper.end_element_handlerN)r3 r4 r5 r6 r� ra r r r r r� * s r� z8http://xml.python.org/entities/fragment-builder/internalz�<!DOCTYPE wrapper %%s [ <!ENTITY fragment-builder-internal SYSTEM "%s"> %%s ]> <wrapper %%s >&fragment-builder-internal;</wrapper>c @ sJ e Zd ZdZddd�Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dS )�FragmentBuilderz�Builder which constructs document fragments given XML source text and a context node. The context node is expected to provide information about the namespace declarations which are in scope at the start of the fragment. Nc C s6 |j tkr|| _|| _n|j| _|| _t�| |� d S r )r� r� �originalDocumentr� r� rJ r )r r� rR r r r r [ s zFragmentBuilder.__init__c C s t �| � d | _d S r )rJ rQ �fragmentr r r r rQ d s zFragmentBuilder.resetc C s | � |�� �S )zRParse a document fragment from a file object, returning the fragment node.)r� r{ �r r� r r r r� h s zFragmentBuilder.parseFilec C s� || _ | �� }| jj}d}|rV|jp*| �� }|jrDd|j|jf }qZ|jrZd|j }nd}| �� }t |||f }z|� |d� W n | � � � Y nX | j }| � � |S )zMParse a document fragment from a string, returning the fragment node.rz zPUBLIC "%s" "%s"z SYSTEM "%s"r! ) �_sourcerW r� r� r� �_getDeclarationsr� r� � _getNSattrs�_FRAGMENT_BUILDER_TEMPLATEr| rQ r� ) r r� ry r� Zidentr� ZnsattrsrY r� r r r r� m s. � zFragmentBuilder.parseStringc C s | j jj}d}|�rt|jj�D ]R}|j�|�}|r<|d }d||jf }|jrdd||j|j f }q d||j f }q t|j j�D ]�}|j �|�}|r�|d }d||jf }|jr�d||j|j f }n&|j r�d||j f }nd ||j j f }|j r�d ||j f }|d }q�|S ) z�Re-create the internal subset from the DocumentType node. This is only needed if we don't already have the internalSubset as a string. rz z z%s<!NOTATION %sz!%s PUBLIC "%s" "%s">z%s SYSTEM "%s">z %s<!ENTITY %sz %s PUBLIC "%s" "%s"z%s SYSTEM "%s"z%s "%s"z%s NOTATION %s�>)r� r� r� r� r� Zlength�item�nodeNamer� r� r Z firstChildr� r� )r r� r9 r� Znotationr r r r r� � s: � � z FragmentBuilder._getDeclarationsc C s dS )Nrz r r r r r r� � s zFragmentBuilder._getNSattrsc C s~ |t krh| j}| j}| j�|�}| j| _| j�� | _| j| _z|� | jd� W 5 || _|| _d | _X dS t � | ||||�S d S )Nr! r� ) �$_FRAGMENT_BUILDER_INTERNAL_SYSTEM_IDrY rZ rP ZExternalEntityParserCreater� ZcreateDocumentFragmentr� r� r| rJ rs )r r� r� r� r� Z old_documentZ old_cur_nodery r r r rs � s( �z+FragmentBuilder.external_entity_ref_handler)N) r3 r4 r5 r� r rQ r� r� r� r� rs r r r r r� R s $r� c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )� Namespacesz7Mix-in class for builders; adds support for namespaces.c C s g | _ d S r )�_ns_ordered_prefixesr r r r �_initNamespaces� s zNamespaces._initNamespacesc C s t jdd�}d|_|S )z'Create a new namespace-handling parser.r; )Znamespace_separatorT)r rS Znamespace_prefixesrx r r r rT � s zNamespaces.createParserc C s t �| |� | jjr | j|_dS )z.Insert the namespace-handlers onto the parser.N)rJ rV rK Znamespace_declarations� start_namespace_decl_handlerZStartNamespaceDeclHandlerrx r r r rV � s �zNamespaces.installc C s | j �||f� dS )z/Push this namespace declaration on our storage.N)r� r� )r rG rE r r r r� � s z'Namespaces.start_namespace_decl_handlerc C s� d|kr t | |�\}}}}nt}|}d }t}t�||||�}| j|_t| j|� || _| j r�| j D ]P\}}|r�t� t | d| �t |d�}nt� dt dt�}||_ | j|_t||� qb| j d d �= |�r~|�� |j} |j} tdt|�d�D ]�} || } || d } d| k�rDt | | �\}}}}t� ||||�}|| |< || ||f< n$t� | t| t�}|| | < || t| f< | j|_| |_ ||_q�d S )Nr; �xmlns:�xmlnsr r= r! )rI r r r ZElementrY r� r rZ r� r� r: r r� r Z_ensure_attributes�_attrs�_attrsNSr� r@ Z ownerElement)r rB r� rE rF rG rH r� r� r� r� r� r& r� r r r r� � s^ � � � z Namespaces.start_element_handlerc C s� | j }d|krHt| |�\}}}}|j|kr>|j|kr>|j|ksltd��n$|j|ksZtd��|jtksltd��|j| _ | � |� d S )Nr; z$element stack messed up! (namespace)z&element stack messed up - bad nodeNamez*element stack messed up - bad namespaceURI) rZ rI r* r+ rG r> r� r r� r� )r rB rZ rE rF rG rH r r r ra s$ ��� � �z Namespaces.end_element_handlerN) r3 r4 r5 r� r� rT rV r� r� ra r r r r r� � s 5r� c @ s e Zd ZdZdd� ZdS )�ExpatBuilderNSz*Document builder that supports namespaces.c C s t �| � | �� d S r )rJ rQ r� r r r r rQ ) s zExpatBuilderNS.resetN)r3 r4 r5 r� rQ r r r r r� & s r� c @ s e Zd ZdZdd� Zdd� ZdS )�FragmentBuilderNSz*Fragment builder that supports namespaces.c C s t �| � | �� d S r )r� rQ r� r r r r rQ 1 s zFragmentBuilderNS.resetc C s� d}| j }g }|r~t|d�rv|j�� D ]N\}}||kr8q&|�|� |rPd| }nd}|rhd|||f }q&d||f }q&|j}q|S )zNReturn string of namespace attributes from this element and ancestors.rz �_ns_prefix_urir� r� z%s %s='%s'z %s='%s')r� �hasattrr� �itemsr� r� )r �attrsr� r� rG rE Zdeclnamer r r r� 5 s" z FragmentBuilderNS._getNSattrsN)r3 r4 r5 r� rQ r� r r r r r� . s r� c @ s e Zd ZdZdS )r zEException raised to short-circuit parsing in InternalSubsetExtractor.N)r3 r4 r5 r� r r r r r S s r c @ sL e Zd ZdZdZdd� Zdd� Zdd� Zd d � Zd d � Z d d� Z dd� Z dS )r� zBXML processor which can rip out the internal document type subset.Nc C s | j S )z'Return the internal subset as a string.)r� r r r r r� \ s z!InternalSubsetExtractor.getSubsetc C s* zt �| |� W n tk r$ Y nX d S r )rJ r� r r� r r r r� ` s z!InternalSubsetExtractor.parseFilec C s* zt �| |� W n tk r$ Y nX d S r )rJ r� r )r r� r r r r� f s z#InternalSubsetExtractor.parseStringc C s | j |_| j|_d S r )r] r^ r� r` rx r r r rV l s z InternalSubsetExtractor.installc C s0 |r&| � � }g | _| jj|_| j|_nt� �d S r )rW r� r� ZDefaultHandlerr� r� r )r rB r� r� r� ry r r r r] p s z2InternalSubsetExtractor.start_doctype_decl_handlerc C s, d� | j��dd��dd�}|| _t� �d S )Nrz z � � )�joinr� �replacer )r r9 r r r r� z s z0InternalSubsetExtractor.end_doctype_decl_handlerc C s t � �d S r )r )r rB r� r r r r� s z-InternalSubsetExtractor.start_element_handler) r3 r4 r5 r� r� r� r� r� rV r] r� r� r r r r r� W s r� Tc C sL |r t � }nt� }t| t�r>t| d��}|�|�}W 5 Q R X n |�| �}|S )z{Parse a document, returning the resulting Document node. 'file' may be either a file name or an open file object. �rb)r� rJ � isinstance�str�openr� )r� � namespacesr8 �fp�resultr r r �parse� s r� c C s |r t � }nt� }|�| �S )zOParse a document from a string, returning the resulting Document node. )r� rJ r� )r� r� r8 r r r r� � s r� c C sP |rt |�}nt|�}t| t�rBt| d��}|�|�}W 5 Q R X n |�| �}|S )z�Parse a fragment of a document, given the context from which it was originally extracted. context should be the parent of the node(s) which are in the fragment. 'file' may be either a file name or an open file object. r� )r� r� r� r� r� r� )r� r� r� r8 r� r� r r r � parseFragment� s r� c C s |rt |�}nt|�}|�| �S )z�Parse a fragment of a document from a string, given the context from which it was originally extracted. context should be the parent of the node(s) which are in the fragment. )r� r� r� )r� r� r� r8 r r r �parseFragmentString� s r� c C s | j rt| �S t| �S dS )z,Create a builder based on an Options object.N)r� r� rJ )rR r r r � makeBuilder� s r� )T)T)T)T)3r� Zxml.domr r r r r r Z xml.parsersr Zxml.dom.minidomr r Zxml.dom.NodeFilterr r� r� r� ZDOMBuilderFilterr� r� r� r� ZgetDOMImplementationrX ZTypeInfor$ �objectr r: rI rJ r� rM r� r� r� r� r� r� r� r� r� � Exceptionr r� r� r� r� r� r� r r r r �<module> sf � 3 C : � �� u_%,
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