/*
* raptor_abbrev_node_lookup:
* @nodes: Sequence of nodes to search
* @node_type: Raptor identifier type
* @node_value: Node value to search with (using raptor_abbrev_node_matches).
* @datatype: Literal datatype or NULL
* @language: Literal language or NULL
*
* Return value: non-zero if @node matches the node described by the rest of
* the parameters or NULL on failure.
*/
raptor_abbrev_node*
raptor_abbrev_node_lookup(raptor_avltree* nodes,
raptor_identifier_type node_type,
const void *node_value, raptor_uri *datatype,
const unsigned char *language)
{
raptor_abbrev_node *lookup_node;
raptor_abbrev_node *rv_node;
/* Create a temporary node for search comparison. */
lookup_node = raptor_new_abbrev_node(node_type, node_value, datatype, language);
if(!lookup_node)
return NULL;
rv_node=(raptor_abbrev_node*)raptor_avltree_search(nodes, lookup_node);
/* If not found, insert/return a new one */
if(!rv_node) {
if(raptor_avltree_add(nodes, lookup_node)) {
/* Insert failed */
raptor_free_abbrev_node(lookup_node);
return NULL;
} else {
return lookup_node;
}
/* Found */
} else {
raptor_free_abbrev_node(lookup_node);
return rv_node;
}
}
/* create a new serializer */
static int
raptor_turtle_serialize_init(raptor_serializer* serializer, const char *name)
{
raptor_turtle_context* context=(raptor_turtle_context*)serializer->context;
raptor_uri *rdf_type_uri;
context->nstack=raptor_new_namespaces_v2(serializer->world,
(raptor_simple_message_handler)raptor_serializer_simple_error,
serializer,
1);
if(!context->nstack)
return 1;
context->rdf_nspace=raptor_new_namespace(context->nstack,
(const unsigned char*)"rdf",
(const unsigned char*)raptor_rdf_namespace_uri,
0);
context->namespaces=raptor_new_sequence(NULL, NULL);
context->subjects =
raptor_new_avltree(serializer->world,
(raptor_data_compare_function)raptor_abbrev_subject_cmp,
(raptor_data_free_function)raptor_free_abbrev_subject, 0);
context->blanks =
raptor_new_avltree(serializer->world,
(raptor_data_compare_function)raptor_abbrev_subject_cmp,
(raptor_data_free_function)raptor_free_abbrev_subject, 0);
context->nodes =
raptor_new_avltree(serializer->world,
(raptor_data_compare_function)raptor_abbrev_node_cmp,
(raptor_data_free_function)raptor_free_abbrev_node, 0);
rdf_type_uri = raptor_new_uri_for_rdf_concept_v2(serializer->world, "type");
if(rdf_type_uri) {
context->rdf_type = raptor_new_abbrev_node(serializer->world,
RAPTOR_IDENTIFIER_TYPE_RESOURCE,
rdf_type_uri, NULL, NULL);
raptor_free_uri_v2(serializer->world, rdf_type_uri);
} else
context->rdf_type = NULL;
context->rdf_xml_literal_uri=raptor_new_uri_v2(serializer->world, raptor_xml_literal_datatype_uri_string);
context->rdf_first_uri=raptor_new_uri_v2(serializer->world, (const unsigned char*)"http://www.w3.org/1999/02/22-rdf-syntax-ns#first");
context->rdf_rest_uri=raptor_new_uri_v2(serializer->world, (const unsigned char*)"http://www.w3.org/1999/02/22-rdf-syntax-ns#rest");
context->rdf_nil_uri=raptor_new_uri_v2(serializer->world, (const unsigned char*)"http://www.w3.org/1999/02/22-rdf-syntax-ns#nil");
if(!context->rdf_nspace || !context->namespaces ||
!context->subjects || !context->blanks || !context->nodes ||
!context->rdf_xml_literal_uri || !context->rdf_first_uri ||
!context->rdf_rest_uri || !context->rdf_nil_uri || !context->rdf_type)
{
raptor_turtle_serialize_terminate(serializer);
return 1;
}
/* Note: item 0 in the list is rdf:RDF's namespace */
if(raptor_sequence_push(context->namespaces, context->rdf_nspace)) {
raptor_turtle_serialize_terminate(serializer);
return 1;
}
return 0;
}
