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// Generates system dictionary header file.
//
// gen_system_dictionary_data_main
//  --input="dictionary0.txt dictionary1.txt"
//  --output="output.h"
//  --make_header

#include <string>
#include <vector>
#include "base/base.h"
#include "base/util.h"
#include "dictionary/system/system_dictionary_builder.h"

DEFINE_string(input, "", "space separated input text files");
DEFINE_string(output, "", "output binary file");
DEFINE_bool(make_header, false, "make header mode");

namespace mozc {
namespace {
// convert space delimtered text to CSV
string GetInputFileName(const vector<string> &filenames) {
  string output;
  Util::JoinStrings(filenames, ",", &output);
  return output;
}
}  // namespace
}  // mozc

int main(int argc, char **argv) {
  InitGoogle(argv[0], &argc, &argv, false);

  vector<string> input_files;
  mozc::Util::SplitStringUsing(FLAGS_input, " ", &input_files);
  string output = FLAGS_output;

  if (FLAGS_make_header) {
    output += ".tmp";
  }

  const string input = mozc::GetInputFileName(input_files);
  mozc::dictionary::SystemDictionaryBuilder builder;
  builder.BuildFromFile(input);
  builder.WriteToFile(output);

  if (FLAGS_make_header) {
    const char kName[] = "DictionaryData";
    mozc::Util::MakeByteArrayFile(kName,
                                  output,
                                  FLAGS_output);
    mozc::Util::Unlink(output);
  }

  return 0;
}