diff options
Diffstat (limited to 'lm/builder/lmplz_main.cc')
| -rw-r--r-- | lm/builder/lmplz_main.cc | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/lm/builder/lmplz_main.cc b/lm/builder/lmplz_main.cc index 2e3002d12..2563deed8 100644 --- a/lm/builder/lmplz_main.cc +++ b/lm/builder/lmplz_main.cc @@ -36,6 +36,7 @@ int main(int argc, char *argv[]) { std::string text, arpa; options.add_options() + ("help", po::bool_switch(), "Show this help message") ("order,o", po::value<std::size_t>(&pipeline.order) #if BOOST_VERSION >= 104200 ->required() @@ -52,7 +53,10 @@ int main(int argc, char *argv[]) { ("verbose_header", po::bool_switch(&pipeline.verbose_header), "Add a verbose header to the ARPA file that includes information such as token count, smoothing type, etc.") ("text", po::value<std::string>(&text), "Read text from a file instead of stdin") ("arpa", po::value<std::string>(&arpa), "Write ARPA to a file instead of stdout"); - if (argc == 1) { + po::variables_map vm; + po::store(po::parse_command_line(argc, argv, options), vm); + + if (argc == 1 || vm["help"].as<bool>()) { std::cerr << "Builds unpruned language models with modified Kneser-Ney smoothing.\n\n" "Please cite:\n" @@ -70,12 +74,17 @@ int main(int argc, char *argv[]) { "setting the temporary file location (-T) and sorting memory (-S) is recommended.\n\n" "Memory sizes are specified like GNU sort: a number followed by a unit character.\n" "Valid units are \% for percentage of memory (supported platforms only) and (in\n" - "increasing powers of 1024): b, K, M, G, T, P, E, Z, Y. Default is K (*1024).\n\n"; + "increasing powers of 1024): b, K, M, G, T, P, E, Z, Y. Default is K (*1024).\n"; + uint64_t mem = util::GuessPhysicalMemory(); + if (mem) { + std::cerr << "This machine has " << mem << " bytes of memory.\n\n"; + } else { + std::cerr << "Unable to determine the amount of memory on this machine.\n\n"; + } std::cerr << options << std::endl; return 1; } - po::variables_map vm; - po::store(po::parse_command_line(argc, argv, options), vm); + po::notify(vm); // required() appeared in Boost 1.42.0. |