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expatbuilder.cpython-39.pyc
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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 u rt �� }|| _| jjd ur2t| 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) rO rS rC � 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 rP � s � zExpatBuilder.resetc C s� | j |_| j|_| j|_| j|_| jj r0| j 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@ F� N) rV �read�ParserX �documentElement� _setup_subset� ParseEscaperP rO )r �filerx Z first_buffer�buffer�docr r r � parseFile� s" zExpatBuilder.parseFilec C sN | � � }z|�|d� | �|� W n ty4 Y n0 | j}| �� d| _|S )z<Parse a document from a string, returning the document node.TN)rV r{ r} r~ rX rP rO )r �stringrx r� r r r � parseString� s zExpatBuilder.parseStringc C s. | j jr*t� }|�|� |�� }|| j j_dS )z/Load the internal subset if there might be one.N)rX �doctype�InternalSubsetExtractorr� � getSubset�internalSubset)r r� Z extractor�subsetr r r r} � s zExpatBuilder._setup_subsetc C s� | j j�|||�}| j |_t| j |� || j _| jrj| j�|�tkrjd | j _| j j d= d }d | j _ d | j _ |r�|d ur�g |j _g |j_d | j _d | j _| j| j _d S �N���)rX �implementationZcreateDocumentType� ownerDocumentr r� rM � acceptNode� FILTER_REJECT� childNodesrO re rg r �_seq� notationsrj rc �end_doctype_decl_handler�EndDoctypeDeclHandler)r Z doctypeName�systemId�publicId�has_internal_subsetr� r r r r\ � s& � 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�elemrA r. �default�requiredr' r r r rv � s �z!ExpatBuilder.attlist_decl_handlerc C s2 || j _|| j _|dkr.|r&d| j _nd| j _d S )Nr TF)rX �version�encoding� standalone)r r� r� r� r r r rt � s z ExpatBuilder.xml_decl_handler)N) r3 r4 r5 �__doc__r rS rV rP rU r� r� r} r\ r� rb ro rq rd rf ri rk rm rr r^ r� rN r` r� r� ru rv rt r r r r rI � s: rI 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 ) rL zoWrapper around a DOMBuilderFilter which implements the checks to make the whatToShow filter attribute work.�rK c C s || _ d S r r� )r rK r r r r � s z#FilterVisibilityController.__init__c C sT | j |j }| jj|@ rL| j�|�}|tkr0t�|tvrHtdt |� ��|S t S d S )Nz)startContainer() returned illegal value: ) �_nodetype_maskr� rK � whatToShowr� �FILTER_INTERRUPTr~ �_ALLOWED_FILTER_RETURNSr@ �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 vrxt dt|� ��|S tS d S )Nz%acceptNode() returned illegal value: )r� r� rK r� r� r� r~ r� r� r� Z appendChildr� r� r@ 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 rL � s$ �rL 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� rO r_ r� ra r� r� r` )r r8 rx 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)rc rj rp rl rn rs )r� r rO �setattr)r r8 rx rA 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� rO rU r� r_ r� ra )r r� rx r r r r` s z Rejecter.end_element_handlerN)r3 r4 r5 r6 r r� r` r r r r r� s r� c @ s e Zd ZdZdd� Zdd� ZdS )r� r c G s. | j j}| j|� | j j|ur*| jd | _d S r� )r� rY 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� rO r_ r� ra r� r r r r` 3 s zSkipper.end_element_handlerN)r3 r4 r5 r6 r� r` 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. 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Nc C s6 |j tkr|| _|| _n|j| _|| _t�| |� d S r )r� r� �originalDocumentr� r� rI r )r r� rQ r r r r [ s zFragmentBuilder.__init__c C s t �| � d | _d S r )rI rP �fragmentr r r r rP d s zFragmentBuilder.resetc C s | � |�� �S )zRParse a document fragment from a file object, returning the fragment node.)r� rz �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 n0 | j }| � � |S )zMParse a document fragment from a string, returning the fragment node.� zPUBLIC "%s" "%s"z SYSTEM "%s"T) �_sourcerV r� r� r� �_getDeclarationsr� r� � _getNSattrs�_FRAGMENT_BUILDER_TEMPLATEr{ rP r� ) r r� rx r� �identr� ZnsattrsrX 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. r� 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� �length�item�nodeNamer� r� r Z firstChildr� r� )r r� r9 r� Znotationr r r r r� � s: � � z FragmentBuilder._getDeclarationsc C s dS )Nr� r r r r r r� � s zFragmentBuilder._getNSattrsc C s� |t krz| j}| j}| j�|�}| j| _| j�� | _| j| _z$|�| j d� W || _|| _d | _ n|| _|| _d | _ 0 dS t � | ||||�S d S )NTr� ) �$_FRAGMENT_BUILDER_INTERNAL_SYSTEM_IDrX rY rO ZExternalEntityParserCreater� ZcreateDocumentFragmentr� r{ r� rI rr )r r� r� r� r� Z old_documentZ old_cur_noderx r r r rr � s& � �z+FragmentBuilder.external_entity_ref_handler)N) r3 r4 r5 r� r rP r� r� r� r� rr r r r r r� R s $r� c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )� Namespacesz7Mix-in class for builders; adds support for namespaces.c C s g | _ d S r )�_ns_ordered_prefixesr r r r �_initNamespaces� s zNamespaces._initNamespacesc C s t jdd�}d|_|S )z'Create a new namespace-handling parser.r; )Znamespace_separatorT)r rR Znamespace_prefixesrw r r r rS � s zNamespaces.createParserc C s t �| |� | jjr | j|_dS )z.Insert the namespace-handlers onto the parser.N)rI rU rJ Znamespace_declarations� start_namespace_decl_handlerZStartNamespaceDeclHandlerrw r r r rU � s �zNamespaces.installc C s | j �||f� dS )z/Push this namespace declaration on our storage.N)r� r� )r rF rD r r r r� � s z'Namespaces.start_namespace_decl_handlerc C s� d|v r t | |�\}}}}nt}|}d }t}t�||||�}| j|_t| j|� || _| j r�| j D ]P\}}|r�t� t | d| �t |d�}nt� dt dt�}||_ | j|_t||� qb| j d d �= |�r~|�� |j} |j} tdt|�d�D ]�} || } || d } d| v �rDt | | �\}}}}t� ||||�}|| |< || ||f< n$t� | t| t�}|| | < || t| f< | j|_| |_ ||_q�d S )Nr; �xmlns:�xmlnsr r= r! )rH r r r ZElementrX r� r rY r� r� r: r r� r Z_ensure_attributes�_attrs�_attrsNSr� r? Z ownerElement)r rA r� rD rE rF rG r� r� r� r� r� r& r� r r r r� � sV �� � z Namespaces.start_element_handlerc C s� | j }d|v rHt| |�\}}}}|j|kr>|j|kr>|j|kslJ d��n$|j|ksZJ d��|jtkslJ d��|j| _ | �|� d S )Nr; z$element stack messed up! (namespace)z&element stack messed up - bad nodeNamez*element stack messed up - bad namespaceURI) rY rH r* r+ rF r� r r� r� )r rA rY rD rE rF rG r r r r` s$ ��� � �z Namespaces.end_element_handlerN) r3 r4 r5 r� r� rS rU r� r� r` 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 )rI rP r� r r r r rP ) s zExpatBuilderNS.resetN)r3 r4 r5 r� rP 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� rP r� r r r r rP 1 s zFragmentBuilderNS.resetc C s� d}| j }g }|r~t|d�rv|j�� D ]N\}}||v r8q&|�|� |rPd| }nd}|rhd|||f }q&d||f }q&|j}q|S )zNReturn string of namespace attributes from this element and ancestors.r� �_ns_prefix_urir� r� z%s %s='%s'z %s='%s')r� �hasattrr� �itemsr� r� )r �attrsr� r� rF rD Zdeclnamer r r r� 5 s" z FragmentBuilderNS._getNSattrsN)r3 r4 r5 r� rP 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 ty" Y n0 d S r )rI r� r~ r� r r r r� ` s z!InternalSubsetExtractor.parseFilec C s( zt �| |� W n ty" Y n0 d S r )rI r� r~ )r r� r r r r� f s z#InternalSubsetExtractor.parseStringc C s | j |_| j|_d S r )r\ r] r� r_ rw r r r rU l s z InternalSubsetExtractor.installc C s0 |r&| � � }g | _| jj|_| j|_nt� �d S r )rV r� r� ZDefaultHandlerr� r� r~ )r rA r� r� r� rx r r r r\ p s z2InternalSubsetExtractor.start_doctype_decl_handlerc C s, d� | j��dd��dd�}|| _t� �d S )Nr� z � � )�joinr� �replacer~ )r r9 r r r r� z s z0InternalSubsetExtractor.end_doctype_decl_handlerc C s t � �d S r )r~ )r rA r� r r r r� s z-InternalSubsetExtractor.start_element_handler) r3 r4 r5 r� r� r� r� r� rU r\ r� r� r r r r r� W s r� Tc C s` |r t � }nt� }t| t�rRt| d��}|�|�}W d � q\1 sF0 Y n |�| �}|S )z{Parse a document, returning the resulting Document node. 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