Your IP : 18.225.117.89
3
�VW�; � @ s d Z dZdZddlZddlZejd dk rXeje�d ZeefZ ej
d�d Z dd � Z n eZ d
d � Z dd l
T dd lmZmZ dd
lmZmZmZmZmZmZmZmZmZmZ y ddl Z W n( e k
r� e dej � d ��Y nX G dd� dej �Z G dd� dej!�Z"dd� Z#dS )a� A SAX2 driver for libxml2, on top of it's XmlReader API
USAGE
# put this file (drv_libxml2.py) in PYTHONPATH
import xml.sax
reader = xml.sax.make_parser(["drv_libxml2"])
# ...and the rest is standard python sax.
CAVEATS
- Lexical handlers are supported, except for start/endEntity
(waiting for XmlReader.ResolveEntity) and start/endDTD
- Error callbacks are not exactly synchronous, they tend
to be invoked before the corresponding content callback,
because the underlying reader interface parses
data by chunks of 512 bytes
TODO
- search for TODO
- some ErrorHandler events (warning)
- some ContentHandler events (setDocumentLocator, skippedEntity)
- EntityResolver (using libxml2.?)
- DTDHandler (if/when libxml2 exposes such node types)
- DeclHandler (if/when libxml2 exposes such node types)
- property_xml_string?
- feature_string_interning?
- Incremental parser
- additional performance tuning:
- one might cache callbacks to avoid some name lookups
- one might implement a smarter way to pass attributes to startElement
(some kind of lazy evaluation?)
- there might be room for improvement in start/endPrefixMapping
- other?
u Stéphane Bidoul <sbi@skynet.be>z0.3� N� �utf8� c C s | d kr | S t | �d S d S )Nr )�_decoder)�s� r �#/usr/lib64/python3.6/drv_libxml2.py�_d1 s r c C s | S )Nr )r r r r r 9 s )�*)� xmlreader�saxutils)
�feature_namespaces�feature_namespace_prefixes�feature_string_interning�feature_validation�feature_external_ges�feature_external_pes�property_lexical_handler� property_declaration_handler�property_dom_node�property_xml_stringz+libxml2 not available: import error was: %sc @ s8 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
d � Zd S )
�Locatorz4SAX Locator adapter for libxml2.xmlTextReaderLocatorc C s
|| _ d S )N)�_Locator__locator)�self�locatorr r r �__init__S s zLocator.__init__c C s dS )z6Return the column number where the current event ends.r ���r )r r r r �getColumnNumberV s zLocator.getColumnNumberc C s
| j j� S )z4Return the line number where the current event ends.)r Z
LineNumber)r r r r �
getLineNumberZ s zLocator.getLineNumberc C s dS )z3Return the public identifier for the current event.Nr )r r r r � getPublicId^ s zLocator.getPublicIdc C s
| j j� S )z3Return the system identifier for the current event.)r ZBaseURI)r r r r � getSystemIdb s zLocator.getSystemIdN) �__name__�
__module__� __qualname__�__doc__r r r r r r r r r r P s r c @ s\ e Zd Zdd� Zdd� Zdd� Zdd� Zd d
� Zd d � Zd
d� Z dd� Z
dd� Z dd� Z dS )�
LibXml2Readerc C s@ t jj| � d| _d| _d| _d| _d| _d | _d | _ d | _
d S )Nr r ) r � XMLReaderr �_LibXml2Reader__ns�_LibXml2Reader__nspfx�_LibXml2Reader__validate�_LibXml2Reader__extparams�_LibXml2Reader__parsing�_LibXml2Reader__lex_handler� _LibXml2Reader__decl_handler�_LibXml2Reader__errors)r r r r r h s zLibXml2Reader.__init__c C s0 | j d krg | _ | j j|t|d t|��f� d S )N)r. �appendZSAXParseExceptionr )r �arg�msg�severityr r r r �
_errorHandlerw s
zLibXml2Reader._errorHandlerc C sl x`| j D ]V\}}|tjtjfkr.| jj|� q|rR|| j d d krR| jj|� q| jj|� qW d | _ d S )Nr r )r. �libxml2Z PARSER_SEVERITY_VALIDITY_WARNINGZPARSER_SEVERITY_WARNING� _err_handlerZwarning�
fatalError�error)r Zfatalr2 Z exceptionr r r �
_reportErrors~ s
zLibXml2Reader._reportErrorsc C sJ d| _ �z4t|t�r tj|�}n&tj|�}tj|j� �}|j |j
� �}|j | j d � | j
r�|jtjd� |jtjd� |jtjd� |jtj| j� n|jtjd� | jr�tji i �}n
tji �}g }| jj� �xJ|j� }|dkr�| jd k r�| j d� nN|dk�r | jd k �r| j d� P n*| jd k �r6| j d� n| j j t d�� P |j � }|dk�r | j�r�t!|j"� �t!|j#� �f} t!|j$� �}
i |_%} i |_&} g }
x�|j'� �r>t!|j$� �}t!|j(� �}|j)d��rt*|�dk�r�|dd � }nd }|
j+|� | jj,||� | j-�s�q�t!|j"� �t!|j#� �f}|| |< || |< �q�W |j.� | jj/| |
|� |j0� �r�| jj1| |
� x&|
D ]}| jj2|� �qvW n
|j+|
� npt!|j$� �} i |_%} x,|j'� �r�t!|j$� �}t!|j(� �| |< �q�W |j.� | jj3| |� |j0� �r| jj4| � q�|dk�r�| j�rj| jj1t!|j"� �t!|j#� �ft!|j$� �� x4|j5� D ]}| jj2|� �qRW n| jj4t!|j$� �� q�|dk�r�| jj6t!|j(� �� q�|d k�r�| jj7t!|j(� �� q�|d
k�r�| jj6t!|j(� �� q�|d k�r,| j8d k �r | j8j9� | jj6t!|j(� �� | j8d k �r| j8j:� q�|dk�r^| j8d k �rT| j;t!|j$� �� |j<� q�|d k�r�| j8d k �r| j=t!|j$� �� q�|d
k�r�| jj>t!|j$� �t!|j(� �� q�|dk�r�| j8d k �r| j8j?t!|j(� �� q�|dk�r�q�|dk�r�q�|dk�rq�|dk�rq�t d| ��q�W |dk�r2| jj@� |jA� W d d| _ X d S )Nr r z"Read failed (no details available)Zxmlns� � � r �
� � � � � �
� � zUnexpected node type %d)Br+ �
isinstance� StringTypesr4 ZnewTextReaderFilenamer Zprepare_input_sourceZ inputBufferZ
getByteStreamZ
newTextReaderr ZSetErrorHandlerr3 r* Z
SetParserPropZPARSER_LOADDTDZPARSER_DEFAULTATTRSZPARSER_SUBST_ENTITIESZPARSER_VALIDATEr) r' r ZAttributesNSImplZAttributesImplZ
_cont_handlerZ
startDocumentZReadr. r8 r5 r6 Z SAXExceptionZNodeTyper Z NamespaceUriZ LocalName�NameZ_attrsZ_qnamesZMoveToNextAttributeZValue�
startswith�lenr/ ZstartPrefixMappingr( Z
MoveToElementZstartElementNSZIsEmptyElementZ endElementNSZendPrefixMappingZ startElementZ
endElement�popZ
charactersZignorableWhitespacer, Z
startCDATAZendCDATAZ startEntityZ
ResolveEntityZ endEntityZprocessingInstructionZcommentZ endDocumentZClose)r �source�reader�inputZattributesNSImplZattributesImpl�prefixes�rZnodeTypeZeltNameZeltQNameZattrsZqnamesZ newPrefixesZqname�valueZ newPrefixZattName�prefixr r r �parse� s�
zLibXml2Reader.parsec C s t d��d S )NzDTDHandler not supported)�SAXNotSupportedException)r Zhandlerr r r �
setDTDHandler8 s zLibXml2Reader.setDTDHandlerc C s t d��d S )Nz EntityResolver not supported)rS )r Zresolverr r r �setEntityResolver< s z LibXml2Reader.setEntityResolverc C sT |t kr| jS |tkr | jS |tkr*| jS |tkr6dS |tkrD| jS t d| ��d S )Nr zFeature '%s' not recognized)
r
r' r r( r r) r r r* �SAXNotRecognizedException)r �namer r r �
getFeature@ s zLibXml2Reader.getFeaturec C s� | j rtd| ��|tkr"|| _nZ|tkr2|| _nJ|tkrB|| _n:|tkr`|dkr|td| ��n |t krp|| _
n t d| ��d S )Nz#Cannot set feature %s while parsingr zFeature '%s' not supportedzFeature '%s' not recognized) r+ rS r
r' r r( r r) r r r* rV )r rW �stater r r �
setFeatureO s"
zLibXml2Reader.setFeaturec C s, |t kr| jS |tkr | jS td| ��d S )Nz Property '%s' not recognized)r r, r r- rV )r rW r r r � getPropertyd s zLibXml2Reader.getPropertyc C s< |t kr|| _n(|tkr,td| ��|| _n td| ��d S )NzProperty '%s' not supportedz Property '%s' not recognized)r r, r rS r- rV )r rW rP r r r � setPropertym s zLibXml2Reader.setPropertyN)
r! r" r# r r3 r8 rR rT rU rX rZ r[ r\ r r r r r% f s , r% c C s t � S )N)r% r r r r �
create_parsery s r] )$r$ �
__author__� __version__�sys�codecs� version_info�unicode_escape_decode�strZunicoderF �lookupr r Zxml.sax._exceptionsZxml.saxr r Zxml.sax.handlerr
r r r r r r r r r r4 � ImportErrorZSAXReaderNotAvailable�exc_infor r& r% r] r r r r �<module># s0
0