1 files changed, 72 insertions, 0 deletions
diff --git a/klm/lm/ngram_query.cc b/klm/lm/ngram_query.cc
new file mode 100644
index 00000000..d1970260
--- /dev/null
+++ b/klm/lm/ngram_query.cc
@@ -0,0 +1,72 @@
+#include "lm/ngram.hh"
+
+#include <cstdlib>
+#include <fstream>
+#include <iostream>
+#include <string>
+
+#include <sys/resource.h>
+#include <sys/time.h>
+
+float FloatSec(const struct timeval &tv) {
+  return static_cast<float>(tv.tv_sec) + (static_cast<float>(tv.tv_usec) / 1000000000.0);
+}
+
+void PrintUsage(const char *message) {
+  struct rusage usage;
+  if (getrusage(RUSAGE_SELF, &usage)) {
+    perror("getrusage");
+    return;
+  }
+  std::cerr << message;
+  std::cerr << "user\t" << FloatSec(usage.ru_utime) << "\nsys\t" << FloatSec(usage.ru_stime) << '\n';
+
+  // Linux doesn't set memory usage :-(.  
+  std::ifstream status("/proc/self/status", std::ios::in);
+  std::string line;
+  while (getline(status, line)) {
+    if (!strncmp(line.c_str(), "VmRSS:\t", 7)) {
+      std::cerr << "rss " << (line.c_str() + 7) << '\n';
+      break;
+    }
+  }
+}
+
+template <class Model> void Query(const Model &model) {
+  PrintUsage("Loading statistics:\n");
+  typename Model::State state, out;
+  lm::FullScoreReturn ret;
+  std::string word;
+
+  while (std::cin) {
+    state = model.BeginSentenceState();
+    float total = 0.0;
+    bool got = false;
+    while (std::cin >> word) {
+      got = true;
+      ret = model.FullScore(state, model.GetVocabulary().Index(word), out);
+      total += ret.prob;
+      std::cout << word << ' ' << static_cast<unsigned int>(ret.ngram_length)  << ' ' << ret.prob << ' ';
+      state = out;
+      if (std::cin.get() == '\n') break;
+    }
+    if (!got && !std::cin) break;
+    ret = model.FullScore(state, model.GetVocabulary().EndSentence(), out);
+    total += ret.prob;
+    std::cout << "</s> " << static_cast<unsigned int>(ret.ngram_length)  << ' ' << ret.prob << ' ';
+    std::cout << "Total: " << total << '\n';
+  }
+  PrintUsage("After queries:\n");
+}
+
+int main(int argc, char *argv[]) {
+  if (argc < 2) {
+    std::cerr << "Pass language model name." << std::endl;
+    return 0;
+  }
+  {
+    lm::ngram::Model ngram(argv[1]);
+    Query(ngram);
+  }
+  PrintUsage("Total time including destruction:\n");
+}