static int librdf_storage_trees_node_compare(librdf_node* n1, librdf_node* n2) { if (n1 == n2) { return 0; } else if (n1->type != n2->type) { return n2->type - n1->type; } else { switch (n1->type) { case LIBRDF_NODE_TYPE_RESOURCE: return librdf_uri_compare(librdf_node_get_uri(n1), librdf_node_get_uri(n2)); case LIBRDF_NODE_TYPE_LITERAL: if (1) { const char *s; size_t l1; size_t l2; size_t l; int r; s = librdf_node_get_literal_value_language(n1); l1 = s ? strlen(s) : 0; s = librdf_node_get_literal_value_language(n2); l2 = s ? strlen(s) : 0; l = (l1 < l2) ? l1 : l2; /* compare first by data type */ r = librdf_uri_compare(librdf_node_get_literal_value_datatype_uri(n1), librdf_node_get_literal_value_datatype_uri(n2)); if (r) return r; /* if data type is equal, compare by value */ r = strcmp((const char*)librdf_node_get_literal_value(n1), (const char*)librdf_node_get_literal_value(n2)); if (r) return r; /* if both data type and value are equal, compare by language */ if (l) { return strncmp(librdf_node_get_literal_value_language(n1), librdf_node_get_literal_value_language(n2), (size_t)l); } else { /* if l == 0 strncmp will always return 0; in that case * consider the node with no language to be lesser. */ return l1 - l2; } } case LIBRDF_NODE_TYPE_BLANK: return strcmp((char*)n1->value.blank.identifier, (char*)n2->value.blank.identifier); case LIBRDF_NODE_TYPE_UNKNOWN: default: return (char*)n2-(char*)n1; /* ? */ } } }
RdfNode RdfStorePrivate::LibRdfNodeToRdfNode(librdf_node* node) const { RdfNode mitkNode; if (!node) return mitkNode; if (librdf_node_is_resource(node)) { mitkNode.SetType(RdfNode::URI); librdf_uri *uri = librdf_node_get_uri(node); mitkNode.SetValue(LibRdfUriToRdfUri(uri).ToString()); } else if (librdf_node_is_literal(node)) { mitkNode.SetType(RdfNode::LITERAL); std::string value = (const char*) librdf_node_get_literal_value(node); if (!value.empty()) mitkNode.SetValue(value); librdf_uri* typeUri = librdf_node_get_literal_value_datatype_uri(node); if (typeUri) mitkNode.SetDatatype(LibRdfUriToRdfUri(typeUri)); } else if (librdf_node_is_blank(node)) { mitkNode.SetType(RdfNode::BLANK); std::string str = (const char*) librdf_node_get_blank_identifier(node); if (!str.empty()) mitkNode.SetValue(str); } return mitkNode; }
rasqal_literal* redland_node_to_rasqal_literal(librdf_world* world, librdf_node *node) { rasqal_literal* l; if(librdf_node_is_resource(node)) { raptor_uri* uri=(raptor_uri*)librdf_new_uri_from_uri(librdf_node_get_uri(node)); l=rasqal_new_uri_literal(world->rasqal_world_ptr, uri); /* transfer uri ownership to literal */ } else if(librdf_node_is_literal(node)) { unsigned char *string; librdf_uri *uri; unsigned char *new_string; char *new_language=NULL; raptor_uri *new_datatype=NULL; size_t len; string=librdf_node_get_literal_value_as_counted_string(node, &len); new_string=(unsigned char*)rasqal_alloc_memory(len+1); if(!new_string) return NULL; strcpy((char*)new_string, (const char*)string); string=(unsigned char*)librdf_node_get_literal_value_language(node); if(string) { new_language=(char*)rasqal_alloc_memory(strlen((const char*)string)+1); if(!new_language) { rasqal_free_memory((void*)new_string); return NULL; } strcpy((char*)new_language, (const char*)string); } uri=librdf_node_get_literal_value_datatype_uri(node); if(uri) new_datatype=(raptor_uri*)librdf_new_uri_from_uri(uri); /* transfer new_string,new_language,new_datatype ownership to literal */ l = rasqal_new_string_literal(world->rasqal_world_ptr, (const unsigned char*)new_string, new_language, new_datatype, NULL); } else { unsigned char *blank=librdf_node_get_blank_identifier(node); unsigned char *new_blank; if(!blank) return NULL; new_blank=(unsigned char*)rasqal_alloc_memory(strlen((const char*)blank)+1); if(!new_blank) return NULL; strcpy((char*)new_blank, (const char*)blank); /* transfer new_blank ownership to literal */ l = rasqal_new_simple_literal(world->rasqal_world_ptr, RASQAL_LITERAL_BLANK, (const unsigned char*)new_blank); } return l; }
/** Create a new SLV2Value from a librdf_node, or return NULL if impossible */ SLV2Value slv2_value_from_librdf_node(SLV2World world, librdf_node* node) { SLV2Value result = NULL; librdf_uri* datatype_uri = NULL; SLV2ValueType type = SLV2_VALUE_STRING; switch (librdf_node_get_type(node)) { case LIBRDF_NODE_TYPE_RESOURCE: type = SLV2_VALUE_URI; result = slv2_value_new_librdf_uri(world, librdf_node_get_uri(node)); break; case LIBRDF_NODE_TYPE_LITERAL: datatype_uri = librdf_node_get_literal_value_datatype_uri(node); if (datatype_uri) { if (!strcmp((const char*)librdf_uri_as_string(datatype_uri), "http://www.w3.org/2001/XMLSchema#integer")) type = SLV2_VALUE_INT; else if (!strcmp((const char*)librdf_uri_as_string(datatype_uri), "http://www.w3.org/2001/XMLSchema#decimal")) type = SLV2_VALUE_FLOAT; else fprintf(stderr, "Unknown datatype %s\n", librdf_uri_as_string(datatype_uri)); } result = slv2_value_new(world, type, (const char*)librdf_node_get_literal_value(node)); break; case LIBRDF_NODE_TYPE_BLANK: type = SLV2_VALUE_STRING; result = slv2_value_new(world, type, (const char*)librdf_node_get_blank_identifier(node)); break; case LIBRDF_NODE_TYPE_UNKNOWN: default: fprintf(stderr, "Unknown RDF node type %d\n", librdf_node_get_type(node)); break; } return result; }
/* * Convert the given literal librdf_node to a Ruby object and return it. */ VALUE rleaf_librdf_literal_node_to_object( librdf_node *node ) { VALUE node_object = Qnil; librdf_uri *uri; VALUE literalstring, uristring; uri = librdf_node_get_literal_value_datatype_uri( node ); literalstring = rb_str_new2( (char *)librdf_node_get_literal_value(node) ); /* Plain literal -> String */ if ( uri == NULL ) { // rleaf_log( "debug", "Converting plain literal %s to a String.", literalstring ); node_object = literalstring; } /* Typed literal */ else { uristring = rb_str_new2( (char *)librdf_uri_to_string(uri) ); node_object = rb_funcall( rleaf_mRedleafNodeUtils, rb_intern("make_typed_literal_object"), 2, uristring, literalstring ); } return node_object; }
static char* node_helper(librdf_storage* storage, librdf_node* node) { librdf_uri* uri; librdf_uri* dt_uri; const char* integer_type = "http://www.w3.org/2001/XMLSchema#integer"; const char* float_type = "http://www.w3.org/2001/XMLSchema#float"; const char* datetime_type = "http://www.w3.org/2001/XMLSchema#dateTime"; char* name; char data_type; switch(librdf_node_get_type(node)) { case LIBRDF_NODE_TYPE_RESOURCE: uri = librdf_node_get_uri(node); name = librdf_uri_as_string(uri); data_type = 'u'; break; case LIBRDF_NODE_TYPE_LITERAL: dt_uri = librdf_node_get_literal_value_datatype_uri(node); if (dt_uri == 0) data_type = 's'; else { const char* type_uri = librdf_uri_as_string(dt_uri); if (strcmp(type_uri, integer_type) == 0) data_type = 'i'; else if (strcmp(type_uri, float_type) == 0) data_type = 'f'; else if (strcmp(type_uri, datetime_type) == 0) data_type = 'd'; else data_type = 's'; } name = librdf_node_get_literal_value(node); break; case LIBRDF_NODE_TYPE_BLANK: name = librdf_node_get_blank_identifier(node); data_type = 'b'; break; case LIBRDF_NODE_TYPE_UNKNOWN: break; } char* term = malloc(5 + strlen(name)); if (term == 0) { fprintf(stderr, "malloc failed"); return 0; } sprintf(term, "%c:%s", data_type, name); return term; }
static void librdf_serializer_print_statement_as_ntriple(librdf_statement * statement, FILE *stream) { librdf_node *subject=librdf_statement_get_subject(statement); librdf_node *predicate=librdf_statement_get_predicate(statement); librdf_node *object=librdf_statement_get_object(statement); char *lang=NULL; librdf_uri *dt_uri=NULL; if(librdf_node_is_blank(subject)) fprintf(stream, "_:%s", librdf_node_get_blank_identifier(subject)); else if(librdf_node_is_resource(subject)) { /* Must be a URI */ fputc('<', stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(librdf_node_get_uri(subject)), '\0'); fputc('>', stream); } else { LIBRDF_ERROR2(statement->world, "Do not know how to print triple subject type %d\n", librdf_node_get_type(subject)); return; } if(!librdf_node_is_resource(predicate)) { LIBRDF_ERROR2(statement->world, "Do not know how to print triple predicate type %d\n", librdf_node_get_type(predicate)); return; } fputc(' ', stream); fputc('<', stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(librdf_node_get_uri(predicate)), '\0'); fputc('>', stream); fputc(' ', stream); switch(librdf_node_get_type(object)) { case LIBRDF_NODE_TYPE_LITERAL: fputc('"', stream); raptor_print_ntriples_string(stream, librdf_node_get_literal_value(object), '"'); fputc('"', stream); lang=librdf_node_get_literal_value_language(object); dt_uri=librdf_node_get_literal_value_datatype_uri(object); if(lang) { fputc('@', stream); fputs(lang, stream); } if(dt_uri) { fputs("^^<", stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(dt_uri), '\0'); fputc('>', stream); } break; case LIBRDF_NODE_TYPE_BLANK: fputs("_:", stream); fputs((const char*)librdf_node_get_blank_identifier(object), stream); break; case LIBRDF_NODE_TYPE_RESOURCE: fputc('<', stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(librdf_node_get_uri(object)), '\0'); fputc('>', stream); break; default: LIBRDF_ERROR2(statement->world, "Do not know how to print triple object type %d\n", librdf_node_get_type(object)); return; } fputs(" .", stream); }
UT_Error IE_Imp_OpenDocument::_handleRDFStreams () { #ifndef WITH_REDLAND return UT_OK; #else UT_Error error = UT_OK; UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams()\n")); // // DEBUG. // { // PD_DocumentRDFHandle rdf = getDoc()->getDocumentRDF(); // PD_DocumentRDFMutationHandle m = rdf->createMutation(); // m->add( PD_URI("http://www.example.com/foo#bar" ), // PD_URI("http://www.example.com/foo#bar" ), // PD_Object("http://www.example.com/foo#bar" ) ); // m->commit(); // rdf->dumpModel("added foo"); // } RDFArguments args; librdf_model* model = args.model; // check if we can load a manifest.rdf file GsfInput* pRdfManifest = gsf_infile_child_by_name(m_pGsfInfile, "manifest.rdf"); if (pRdfManifest) { UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams() have manifest.rdf\n")); error = _loadRDFFromFile( pRdfManifest, "manifest.rdf", &args ); g_object_unref (G_OBJECT (pRdfManifest)); if (error != UT_OK) return error; } // find other RDF/XML files referenced in the manifest const char* query_string = "" "prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> \n" "prefix odf: <http://docs.oasis-open.org/opendocument/meta/package/odf#> \n" "prefix odfcommon: <http://docs.oasis-open.org/opendocument/meta/package/common#> \n" "select ?subj ?fileName \n" " where { \n" " ?subj rdf:type odf:MetaDataFile . \n" " ?subj odfcommon:path ?fileName \n" " } \n"; librdf_uri* base_uri = 0; librdf_query* query = librdf_new_query( args.world, "sparql", 0, (unsigned char*)query_string, base_uri ); librdf_query_results* results = librdf_query_execute( query, model ); if( !results ) { // Query failed is a failure to execute the SPARQL, // in which case there might be results but we couldn't find them UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams() SPARQL query to find auxillary RDF/XML files failed! q:%p\n", query )); error = UT_ERROR; } else { UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams() aux RDF/XML file count:%d\n", librdf_query_results_get_count( results ))); // parse auxillary RDF/XML files too for( ; !librdf_query_results_finished( results ) ; librdf_query_results_next( results )) { librdf_node* fnNode = librdf_query_results_get_binding_value_by_name ( results, "fileName" ); UT_DEBUGMSG(("_handleRDFStreams() fnNode:%p\n", fnNode )); std::string fn = toString(fnNode); UT_DEBUGMSG(("_handleRDFStreams() loading auxilary RDF/XML file from:%s\n", fn.c_str())); GsfInput* pAuxRDF = gsf_infile_child_by_name(m_pGsfInfile, fn.c_str()); if (pAuxRDF) { error = _loadRDFFromFile( pAuxRDF, fn.c_str(), &args ); g_object_unref (G_OBJECT (pAuxRDF)); if( error != UT_OK ) break; } else { UT_ASSERT_HARMLESS(UT_SHOULD_NOT_HAPPEN); return UT_ERROR; } } librdf_free_query_results( results ); } librdf_free_query( query ); UT_DEBUGMSG(("_handleRDFStreams() error:%d model.sz:%d\n", error, librdf_model_size( model ))); if( error != UT_OK ) { return error; } // convert the redland model into native AbiWord RDF triples { PD_DocumentRDFHandle rdf = getDoc()->getDocumentRDF(); PD_DocumentRDFMutationHandle m = rdf->createMutation(); librdf_statement* statement = librdf_new_statement( args.world ); librdf_stream* stream = librdf_model_find_statements( model, statement ); while (!librdf_stream_end(stream)) { librdf_statement* current = librdf_stream_get_object( stream ); int objectType = PD_Object::OBJECT_TYPE_URI; std::string xsdType = ""; if( librdf_node_is_blank( librdf_statement_get_object( current ))) { objectType = PD_Object::OBJECT_TYPE_BNODE; } if( librdf_node_is_literal( librdf_statement_get_object( current ))) { objectType = PD_Object::OBJECT_TYPE_LITERAL; if( librdf_uri* u = librdf_node_get_literal_value_datatype_uri( librdf_statement_get_object( current ))) { xsdType = toString(u); } } if( DEBUG_RDF_IO ) { UT_DEBUGMSG(("_handleRDFStreams() adding s:%s p:%s o:%s rotv:%d otv:%d ots:%s\n", toString( librdf_statement_get_subject( current )).c_str(), toString( librdf_statement_get_predicate( current )).c_str(), toString( librdf_statement_get_object( current )).c_str(), librdf_node_get_type(librdf_statement_get_object( current )), objectType, xsdType.c_str() )); } m->add( PD_URI( toString( librdf_statement_get_subject( current ))), PD_URI( toString( librdf_statement_get_predicate( current ))), PD_Object( toString( librdf_statement_get_object( current )), objectType, xsdType )); // m->add( PD_URI( toString( librdf_statement_get_subject( current ))), // PD_URI( toString( librdf_statement_get_predicate( current ))), // PD_Object( toString( librdf_statement_get_object( current )), // objectType, // xsdType )); librdf_stream_next(stream); } librdf_free_stream( stream ); librdf_free_statement( statement ); // m->add( PD_URI("http://www.example.com/foo#bar" ), // PD_URI("http://www.example.com/foo#bar" ), // PD_Object("http://www.example.com/foo#bar" ) ); m->commit(); } if( DEBUG_RDF_IO ) { getDoc()->getDocumentRDF()->dumpModel("Loaded RDF from ODF file"); } return error; #endif }