#include <stdio.h>
#include <raptor.h>

/* rdfprint.c: print triples from parsing RDF/XML */

void
print_triple(void* user_data, const raptor_statement* triple) 
{
  raptor_print_statement_as_ntriples(triple, stdout);
  fputc('\n', stdout);
}

int
main(int argc, char *argv[])
{
  raptor_parser* rdf_parser=NULL;
  unsigned char *uri_string;
  raptor_uri *uri, *base_uri;

  raptor_init();

  rdf_parser=raptor_new_parser("rdfxml");

  raptor_set_statement_handler(rdf_parser, NULL, print_triple);

  uri_string=raptor_uri_filename_to_uri_string(argv[1]);
  uri=raptor_new_uri(uri_string);
  base_uri=raptor_uri_copy(uri);

  raptor_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_finish();
}

Compile it like this:

$ gcc -o rdfprint rdfprint.c `raptor-config --cflags` `raptor-config --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/> .
...