int rdfa_parse_start(rdfacontext* context)
{
/* create the buffers and expat parser */
int rval = RDFA_PARSE_SUCCESS;
context->wb_allocated = sizeof(char) * READ_BUFFER_SIZE;
/* +1 for NUL at end, to allow strstr() etc. to work
* malloc - only the first char needs to be NUL */
context->working_buffer = (char*)malloc(context->wb_allocated + 1);
*context->working_buffer = '\0';
context->done = 0;
context->context_stack = rdfa_create_list(32);
/* initialize the context stack */
rdfa_push_item(context->context_stack, context, RDFALIST_FLAG_CONTEXT);
#ifdef LIBRDFA_IN_RAPTOR
context->sax2 = raptor_new_sax2(context->world, context->locator,
context);
#else
/* init libxml2 */
xmlInitParser();
#endif
/* set up the context stack */
#ifdef LIBRDFA_IN_RAPTOR
raptor_sax2_set_start_element_handler(context->sax2,
raptor_rdfa_start_element);
raptor_sax2_set_end_element_handler(context->sax2,
raptor_rdfa_end_element);
raptor_sax2_set_characters_handler(context->sax2,
raptor_rdfa_character_data);
raptor_sax2_set_namespace_handler(context->sax2,
raptor_rdfa_namespace_handler);
#endif
rdfa_init_context(context);
#ifdef LIBRDFA_IN_RAPTOR
context->base_uri = raptor_new_uri(context->sax2->world,
(const unsigned char*)context->base);
raptor_sax2_parse_start(context->sax2, context->base_uri);
#endif
return rval;
}
/*
* rasqal_query_results_getrowsource_sparql_xml:
* @world: rasqal world object
* @iostr: #raptor_iostream to read the query results from
* @base_uri: #raptor_uri base URI of the input format
*
* Read the fourth version of the SPARQL XML query results format from an
* iostream in a format returning a rwosurce - INTERNAL.
*
* Return value: a new rasqal_rowsource or NULL on failure
**/
static rasqal_rowsource*
rasqal_query_results_get_rowsource_sparql_xml(rasqal_query_results_formatter* formatter,
rasqal_world *world,
rasqal_variables_table* vars_table,
raptor_iostream *iostr,
raptor_uri *base_uri)
{
rasqal_rowsource_sparql_xml_context* con;
con=(rasqal_rowsource_sparql_xml_context*)RASQAL_CALLOC(rasqal_rowsource_sparql_xml_context, 1, sizeof(rasqal_rowsource_sparql_xml_context));
if(!con)
return NULL;
con->world=world;
con->base_uri = base_uri ? raptor_uri_copy(base_uri) : NULL;
con->iostr=iostr;
con->locator.uri=base_uri;
con->sax2 = raptor_new_sax2(world->raptor_world_ptr, &con->locator, con);
if(!con->sax2)
return NULL;
raptor_sax2_set_start_element_handler(con->sax2,
rasqal_sparql_xml_sax2_start_element_handler);
raptor_sax2_set_characters_handler(con->sax2,
rasqal_sparql_xml_sax2_characters_handler);
raptor_sax2_set_end_element_handler(con->sax2,
rasqal_sparql_xml_sax2_end_element_handler);
con->results_sequence = raptor_new_sequence((raptor_data_free_handler)rasqal_free_row, (raptor_data_print_handler)rasqal_row_print);
con->vars_table = rasqal_new_variables_table_from_variables_table(vars_table);
return rasqal_new_rowsource_from_handler(world, NULL,
con,
&rasqal_rowsource_sparql_xml_handler,
con->vars_table,
0);
}
