1 files changed, 85 insertions, 0 deletions
diff --git a/klm/alone/main.cc b/klm/alone/main.cc
new file mode 100644
index 00000000..e09ab01d
--- /dev/null
+++ b/klm/alone/main.cc
@@ -0,0 +1,85 @@
+#include "alone/threading.hh"
+#include "search/config.hh"
+#include "search/context.hh"
+#include "util/exception.hh"
+#include "util/file_piece.hh"
+#include "util/usage.hh"
+
+#include <boost/lexical_cast.hpp>
+
+#include <iostream>
+#include <memory>
+
+namespace alone {
+
+template <class Control> void ReadLoop(const std::string &graph_prefix, Control &control) {
+  for (unsigned int sentence = 0; ; ++sentence) {
+    std::stringstream name;
+    name << graph_prefix << '/' << sentence;
+    std::auto_ptr<util::FilePiece> file;
+    try {
+      file.reset(new util::FilePiece(name.str().c_str()));
+    } catch (const util::ErrnoException &e) {
+      if (e.Error() == ENOENT) return;
+      throw;
+    }
+    control.Add(file.release());
+  }
+}
+
+template <class Model> void RunWithModelType(const char *graph_prefix, const char *model_file, StringPiece weight_str, unsigned int pop_limit, unsigned int threads) {
+  Model model(model_file);
+  search::Weights weights(weight_str);
+  search::Config config(weights, pop_limit);
+
+  if (threads > 1) {
+#ifdef WITH_THREADS
+    Controller<Model> controller(config, model, threads, std::cout);
+    ReadLoop(graph_prefix, controller);
+#else
+    UTIL_THROW(util::Exception, "Threading support not compiled in.");
+#endif
+  } else {
+    InThread<Model> controller(config, model, std::cout);
+    ReadLoop(graph_prefix, controller);
+  }
+}
+
+void Run(const char *graph_prefix, const char *lm_name, StringPiece weight_str, unsigned int pop_limit, unsigned int threads) {
+  lm::ngram::ModelType model_type;
+  if (!lm::ngram::RecognizeBinary(lm_name, model_type)) model_type = lm::ngram::PROBING;
+  switch (model_type) {
+    case lm::ngram::PROBING:
+      RunWithModelType<lm::ngram::ProbingModel>(graph_prefix, lm_name, weight_str, pop_limit, threads);
+      break;
+    case lm::ngram::REST_PROBING:
+      RunWithModelType<lm::ngram::RestProbingModel>(graph_prefix, lm_name, weight_str, pop_limit, threads);
+      break;
+    default:
+      UTIL_THROW(util::Exception, "Sorry this lm type isn't supported yet.");
+  }
+}
+
+} // namespace alone
+
+int main(int argc, char *argv[]) {
+  if (argc < 5 || argc > 6) {
+    std::cerr << argv[0] << " graph_prefix lm \"weights\" pop [threads]" << std::endl;
+    return 1;
+  }
+
+#ifdef WITH_THREADS
+  unsigned thread_count = boost::thread::hardware_concurrency();
+#else
+  unsigned thread_count = 1;
+#endif
+  if (argc == 6) {
+    thread_count = boost::lexical_cast<unsigned>(argv[5]);
+    UTIL_THROW_IF(!thread_count, util::Exception, "Thread count 0");
+  }
+  UTIL_THROW_IF(!thread_count, util::Exception, "Boost doesn't know how many threads there are.  Pass it on the command line.");
+  alone::Run(argv[1], argv[2], argv[3], boost::lexical_cast<unsigned int>(argv[4]), thread_count);
+
+  util::PrintUsage(std::cerr);
+  return 0;
+}