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from lxml.includes cimport tree
from lxml.includes.tree cimport xmlDoc, xmlDtd

cdef extern from "libxml/valid.h" nogil:
    ctypedef void (*xmlValidityErrorFunc)(void * ctx, const char * msg, ...)
    ctypedef void (*xmlValidityWarningFunc)(void * ctx, const char * msg, ...)

    ctypedef struct xmlValidCtxt:
        void *userData
        xmlValidityErrorFunc error
        xmlValidityWarningFunc warning

    cdef xmlValidCtxt* xmlNewValidCtxt()
    cdef void xmlFreeValidCtxt(xmlValidCtxt* cur)

    cdef int xmlValidateDtd(xmlValidCtxt* ctxt, xmlDoc* doc, xmlDtd* dtd)
    cdef tree.xmlElement* xmlGetDtdElementDesc(
        xmlDtd* dtd, tree.const_xmlChar* name)