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// Copyright Yahoo. 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;
unsigned int gram_count(unsigned int mg, unsigned int q)
{
unsigned int i,j,c1,c2,ct=0;
for(i=2;i<=mg;i++){
c1=1;c2=1;
for(j=(i>q-i)?(i+1):(q-i+1);j<=q;j++){
c1*=j;
c2*=(q-j)+1;
}
ct+=c1/c2;
}
return ct;
}
int main(int argc, char **argv)
{
const unsigned int MAXQUERY = 10;
const unsigned int MAXGRAM = 6;
Permuter p;
NGram freq_s,query;
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] << " fsa_file" << std::endl;
return 1;
}
FSA fsa(argv[1]);
FSA::State state(fsa);
std::map<std::string,unsigned int> grams,gq;
std::map<std::string,unsigned int>::iterator grams_it,gq_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());
gq.clear();
for(unsigned int i=0;i<qlen-1;i++){
for(unsigned int j=2;j<=MAXGRAM&&i+j<=qlen;j++){
state.startWord(query[i]);
for(unsigned int k=1;state.isValid()&&k<j;k++){
state.deltaWord(query[i+k]);
}
if(state.isFinal()){
gram_str = query.join(" ",i,j);
gq[gram_str]=freq;
}
}
}
for(gq_it=gq.begin();gq_it!=gq.end();++gq_it){
grams_it=grams.find(gq_it->first);
if(grams_it!=grams.end())
grams[gq_it->first]=grams_it->second+gq_it->second;
else
grams[gq_it->first]=gq_it->second;
}
}
}
for(grams_it=grams.begin();grams_it!=grams.end();++grams_it)
std::cout << grams_it->first << '\t' << grams_it->second << std::endl;
return 0;
}
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