1 files changed, 23 insertions, 3 deletions
diff --git a/klm/lm/build_binary.cc b/klm/lm/build_binary.cc
index 144c57e0..d6dd5994 100644
--- a/klm/lm/build_binary.cc
+++ b/klm/lm/build_binary.cc
@@ -1,6 +1,8 @@
 #include "lm/model.hh"
 #include "util/file_piece.hh"
 
+#include <cstdlib>
+#include <exception>
 #include <iostream>
 #include <iomanip>
 
@@ -13,8 +15,10 @@ namespace ngram {
 namespace {
 
 void Usage(const char *name) {
-  std::cerr << "Usage: " << name << " [-u unknown_probability] [-p probing_multiplier] [-t trie_temporary] [-m trie_building_megabytes] [type] input.arpa output.mmap\n\n"
-"Where type is one of probing, trie, or sorted:\n\n"
+  std::cerr << "Usage: " << name << " [-u unknown_probability] [-s] [-p probing_multiplier] [-t trie_temporary] [-m trie_building_megabytes] [type] input.arpa output.mmap\n\n"
+"-u sets the default probability for <unk> if the ARPA file does not have one.\n"
+"-s allows models to be built even if they do not have <s> and </s>.\n\n"
+"type is one of probing, trie, or sorted:\n\n"
 "probing uses a probing hash table.  It is the fastest but uses the most memory.\n"
 "-p sets the space multiplier and must be >1.0.  The default is 1.5.\n\n"
 "trie is a straightforward trie with bit-level packing.  It uses the least\n"
@@ -65,12 +69,25 @@ void ShowSizes(const char *file, const lm::ngram::Config &config) {
 } // namespace lm
 } // namespace
 
+void terminate_handler() {
+  try { throw; }
+  catch(const std::exception& e) {
+    std::cerr << e.what() << std::endl;
+  }
+  catch(...) {
+    std::cerr << "A non-standard exception was thrown." << std::endl;
+  }
+  std::abort();
+}
+
 int main(int argc, char *argv[]) {
   using namespace lm::ngram;
 
+  std::set_terminate(terminate_handler);
+
   lm::ngram::Config config;
   int opt;
-  while ((opt = getopt(argc, argv, "u:p:t:m:")) != -1) {
+  while ((opt = getopt(argc, argv, "su:p:t:m:")) != -1) {
     switch(opt) {
       case 'u':
         config.unknown_missing_prob = ParseFloat(optarg);
@@ -84,6 +101,9 @@ int main(int argc, char *argv[]) {
       case 'm':
         config.building_memory = ParseUInt(optarg) * 1048576;
         break;
+      case 's':
+        config.sentence_marker_missing = lm::ngram::Config::SILENT;
+        break;
       default:
         Usage(argv[0]);
     }