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#include <stdio.h>
#include <stdlib.h>
#include "lrdf.h"
int main(int argc, char*argv[])
{
const char *rdf_uris[] = {
"file:ladspa.rdfs",
"file:sample.rdf",
"file:example.rdf",
NULL
};
lrdf_uris *ulist;
unsigned int i;
lrdf_statement p1, p2;
lrdf_init();
if (lrdf_read_files(rdf_uris)) {
fprintf(stderr, "failed to open a file\n");
exit(1);
}
printf("Matches for (?, ladspa:hasLabel, gain)\n");
p1.subject = "?";
p1.predicate = "http://ladspa.org/ontology#hasLabel";
p1.object = "gain";
p1.next = NULL;
ulist = lrdf_match_multi(&p1);
for (i = 0; ulist && i < ulist->count; i++) {
printf(" %s\n", ulist->items[i]);
}
printf("\n");
lrdf_free_uris(ulist);
printf("Matches for (?, ladspa:hasLabel, freq), (?, ladspa:hasUnits, ladspa:Hz)\n");
p1.subject = "?";
p1.predicate = "http://ladspa.org/ontology#hasLabel";
p1.object = "freq";
p1.next = &p2;
p2.subject = "?";
p2.predicate = "http://ladspa.org/ontology#hasUnits";
p2.object = "http://ladspa.org/ontology#Hz";
p2.next = NULL;
ulist = lrdf_match_multi(&p1);
for (i = 0; ulist && i < ulist->count; i++) {
printf(" %s\n", ulist->items[i]);
}
printf("\n");
lrdf_free_uris(ulist);
lrdf_cleanup();
return 0;
}
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