1 files changed, 78 insertions, 0 deletions
diff --git a/fsa/queryproc/count_sorted_grams.cpp b/fsa/queryproc/count_sorted_grams.cpp
new file mode 100644
index 00000000000..58be4548fac
--- /dev/null
+++ b/fsa/queryproc/count_sorted_grams.cpp
@@ -0,0 +1,78 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+#include <iostream>
+#include <iomanip>
+#include <map>
+#include <string>
+
+#include "fsa.h"
+#include "permuter.h"
+#include "selector.h"
+#include "ngram.h"
+#include "base64.h"
+#include "wordchartokenizer.h"
+
+using namespace fsa;
+
+int main(int argc, char **argv)
+{
+  const unsigned int MAXQUERY = 10;
+  const unsigned int MAXGRAM  = 6;
+
+  Permuter p;
+  NGram freq_s,query,gram;
+  WordCharTokenizer tokenizer(WordCharTokenizer::PUNCTUATION_WHITESPACEONLY);
+  unsigned int freq;
+  Selector s;
+  std::string qstr;
+  unsigned int qlen,glen;
+
+  if(argc!=2){
+    std::cerr << "usage: " << argv[0] << " sorted_fsa_file" << std::endl;
+    exit(1);
+  }
+
+  FSA fsa(argv[1]);
+  FSA::State state(fsa);
+  std::map<std::string,unsigned int> grams;
+  std::map<std::string,unsigned int>::iterator grams_it;
+  std::string gram_str;
+
+  while(!std::cin.eof()){
+    getline(std::cin,qstr);
+    query.set(qstr,tokenizer,1,-1);
+    qlen = query.length();
+    if(2<=qlen && qlen<=MAXQUERY){
+      freq_s.set(qstr,tokenizer,0,1);
+      freq=atoi(freq_s[0].c_str());
+      query.sort();
+      qlen = query.uniq();
+      unsigned int glen=qlen<MAXGRAM?qlen:MAXGRAM;
+      for(unsigned int n=2;n<=glen;n++){
+        unsigned int c=Permuter::firstComb(n,qlen);
+        while(c>0){
+          s.clear();
+          s.set(c);
+          gram.set(query,s);
+          state.startWord(gram[0]);
+          for(unsigned int i=1;state.isValid()&&i<gram.size();i++){
+            state.deltaWord(gram[i]);
+          }
+          if(state.isFinal()){
+            gram_str = gram.join(" ");
+            grams_it=grams.find(gram_str);
+            if(grams_it!=grams.end())
+              grams[gram_str]=grams_it->second+freq;
+            else
+              grams[gram_str]=freq;
+          }
+          c=Permuter::nextComb(c,qlen);
+        }
+      }
+    }
+  }
+
+  for(grams_it=grams.begin();grams_it!=grams.end();++grams_it)
+    std::cout << grams_it->first << '\t' << grams_it->second << std::endl;
+
+  return 0;
+}