owlcpp  v0.3.3~
C++ library for working with OWL ontologies
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print_triples.cpp

Example of loading ontologies into triple store

#include <iostream>
#include <string>
#include <vector>
#include "boost/filesystem.hpp"
#include "boost/foreach.hpp"
#include "boost/program_options.hpp"
namespace bpo = boost::program_options;
namespace bfs = boost::filesystem;
int main(int argc, char* argv[]) {
bpo::options_description od;
od.add_options()
("help,h", "help message")
("input-file", bpo::value<std::string>(), "input OWL file")
("include,i",
bpo::value<std::vector<std::string> >()->zero_tokens()
->composing(), "search paths")
("count,c", "only print the number of triples")
;
bpo::positional_options_description pod;
pod.add("input-file", -1);
bpo::variables_map vm;
store(bpo::command_line_parser(argc, argv).options(od).positional(pod).run(), vm);
notify(vm);
if( ! vm.count("input-file") || vm.count("help") ) {
std::cout
<< "Parse OWL ontology and print triples" << '\n'
<< "Usage:" << '\n'
<< "print_triples [-i[path]] [-c] <OWL_ontology_file.owl>" << '\n'
<< od << '\n';
return ! vm.count("help");
}
const bfs::path in( vm["input-file"].as<std::string>());
try {
if( vm.count("include") ) { //load input-file and its includes
//how far to look into each file for ontologyVersion
const std::size_t search_depth = 100;
std::vector<std::string> const& vin = vm["include"].as<std::vector<std::string> >();
if( vin.empty() ) {
add(cat, in.parent_path(), true, search_depth);
} else {
BOOST_FOREACH(std::string const& p, vin) add(cat, p, true, search_depth);
}
load_file(in, store, cat);
} else { //load just input-file
load_file(in, store);
}
if( vm.count("count") ) {
std::cout
<< store.map_triple().size() << " triples" << '\n'
<< store.map_node().size() << " nodes" << '\n'
<< store.map_ns().size() << " namespace IRIs" << '\n'
;
} else {
BOOST_FOREACH( owlcpp::Triple const& t, store.map_triple() ) {
std::cout
<< '\"'
<< to_string(t.subj_, store) << "\"\t\""
<< to_string(t.pred_, store) << "\"\t\""
<< to_string(t.obj_, store) << "\"\t\n"
;
}
}
} catch(...) {
std::cerr << boost::current_exception_diagnostic_information() << std::endl;
return 1;
}
return 0;
}