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#include "dictionary/spelling_correction_dictionary_builder.h"

#include <cmath>
#include <string>
#include <vector>

#include "base/base.h"
#include "base/util.h"
#include "base/file_stream.h"
#include "dictionary/system/system_dictionary.h"

namespace mozc {

SpellingCorrectionDictionaryBuilder::SpellingCorrectionDictionaryBuilder(
    const string &input, const string &output)
    : input_filename_(input), output_filename_(output) {
}

SpellingCorrectionDictionaryBuilder::~SpellingCorrectionDictionaryBuilder() {}

void SpellingCorrectionDictionaryBuilder::Build() {
  InputFileStream ifs(input_filename_.c_str());
  CHECK(ifs);
  string line;
  vector<string> tokens;

  OutputFileStream ofs(output_filename_.c_str());
  CHECK(ofs);

  while (getline(ifs, line)) {
    if (line.size() <= 0 || line[0] == '#') {
      continue;
    }

    tokens.clear();
    Util::SplitStringUsing(line, "\t", &tokens);
    if (tokens.size() < 5) {
      LOG(ERROR) << "format error: " << line;
      continue;
    }

    const int lid = SystemDictionary::kSpellingCorrectionPosOffset
        + strtod(tokens[1].c_str(), NULL);

    ofs << tokens[0] << "\t"
        << lid       << "\t"
        << tokens[2] << "\t"
        << tokens[3] << "\t"
        << tokens[4] << endl;
  }
}
}  // namespace mozc