# -*- coding: utf-8 -*-
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"""
A code generator of SVM classifier.
"""
__author__ = "taku"

import sys
import re

HEADER="""// Copyright 2009 Google Inc. All Rights Reserved.
namespace {
double SVMClassify(const vector<pair<int, double> > &feature) {
  double result = 0.0;
  for (size_t i = 0; i < feature.size(); ++i) {
    switch (feature[i].first) {"""


FOOTER="""      default: break;
    }  // end case
  }  // end for
  return result;
}
}  // namespace
"""

def main():
  try:
    print HEADER;
    file = sys.argv[1]
    for line in open(file, "r"):
      fields = line.split()
      print "      case %s: result += %s * feature[i].second; break;" % (fields[0], fields[1])
    print FOOTER;
  except:
    print "cannot open %s" % (file)
    sys.exit(1)

if __name__ == "__main__":
  main()