| Raptor RDF Syntax Library Manual |
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Example 2. rdfprint.c: Parse an RDF/XML file and print the triples
#include <stdio.h>
#include <raptor.h>
/* rdfprint.c: print triples from parsing RDF/XML */
static void
print_triple(void* user_data, raptor_statement* triple)
{
raptor_statement_print_as_ntriples(triple, stdout);
fputc('\n', stdout);
}
int
main(int argc, char *argv[])
{
raptor_world *world = NULL;
raptor_parser* rdf_parser = NULL;
unsigned char *uri_string;
raptor_uri *uri, *base_uri;
world = raptor_new_world();
rdf_parser = raptor_new_parser(world, "rdfxml");
raptor_parser_set_statement_handler(rdf_parser, NULL, print_triple);
uri_string = raptor_uri_filename_to_uri_string(argv[1]);
uri = raptor_new_uri(world, uri_string);
base_uri = raptor_uri_copy(uri);
raptor_parser_parse_file(rdf_parser, uri, base_uri);
raptor_free_parser(rdf_parser);
raptor_free_uri(base_uri);
raptor_free_uri(uri);
raptor_free_memory(uri_string);
raptor_free_world(world);
return 0;
}
Compile it like this:
$ gcc -o rdfprint rdfprint.c `pkg-config raptor2 --cflags --libs`
and run it on an RDF file as:
$ ./rdfprint raptor.rdf _:genid1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://usefulinc.com/ns/doap#Project> . _:genid1 <http://usefulinc.com/ns/doap#name> "Raptor" . _:genid1 <http://usefulinc.com/ns/doap#homepage> <http://librdf.org/raptor/> . ...