C++ UNICHARSET::save_to_file方法代码示例

// Helper to set the properties for an input unicharset file, writes to the
// output file. If an appropriate script unicharset can be found in the
// script_dir directory, then the tops and bottoms are expanded using the
// script unicharset.
// If non-empty, xheight data for the fonts are written to the xheights_file.
void SetPropertiesForInputFile(const std::string& script_dir,
                               const std::string& input_unicharset_file,
                               const std::string& output_unicharset_file,
                               const std::string& output_xheights_file) {
  UNICHARSET unicharset;

  // Load the input unicharset
  unicharset.load_from_file(input_unicharset_file.c_str());
  tprintf("Loaded unicharset of size %d from file %s\n", unicharset.size(),
          input_unicharset_file.c_str());

  // Set unichar properties
  tprintf("Setting unichar properties\n");
  SetupBasicProperties(true, false, &unicharset);
  tprintf("Setting script properties\n");
  SetScriptProperties(script_dir, &unicharset);
  if (!output_xheights_file.empty()) {
    std::string xheights_str = GetXheightString(script_dir, unicharset);
    File::WriteStringToFileOrDie(xheights_str, output_xheights_file);
  }

  // Write the output unicharset
  tprintf("Writing unicharset to file %s\n", output_unicharset_file.c_str());
  unicharset.save_to_file(output_unicharset_file.c_str());
}

int main(int argc, char** argv) {
  int option;
  const char* output_directory = ".";
  STRING unicharset_file_name;
  // Special characters are now included by default.
  UNICHARSET unicharset;

  setlocale(LC_ALL, "");

  // Print usage
  if (argc <= 1) {
    printf("Usage: %s [-D DIRECTORY] FILE...\n", argv[0]);
    exit(1);

  }

  // Parse arguments
  while ((option = tessopt(argc, argv, "D" )) != EOF) {
    switch (option) {
      case 'D':
        output_directory = tessoptarg;
        ++tessoptind;
        break;
    }
  }

  // Save file name
  unicharset_file_name = output_directory;
  unicharset_file_name += "/";
  unicharset_file_name += kUnicharsetFileName;

  // Load box files
  for (; tessoptind < argc; ++tessoptind) {
    printf("Extracting unicharset from %s\n", argv[tessoptind]);

    FILE* box_file = fopen(argv[tessoptind], "rb");
    if (box_file == NULL) {
      printf("Cannot open box file %s\n", argv[tessoptind]);
      return -1;
    }

    TBOX box;
    STRING unichar_string;
    int line_number = 0;
    while (ReadNextBox(&line_number, box_file, &unichar_string, &box)) {
      unicharset.unichar_insert(unichar_string.string());
      set_properties(&unicharset, unichar_string.string());
    }
  }

  // Write unicharset file
  if (unicharset.save_to_file(unicharset_file_name.string())) {
    printf("Wrote unicharset file %s.\n", unicharset_file_name.string());
  }
  else {
    printf("Cannot save unicharset file %s.\n", unicharset_file_name.string());
    return -1;
  }
  return 0;
}

// Helper to set the properties for an input unicharset file, writes to the
// output file. If an appropriate script unicharset can be found in the
// script_dir directory, then the tops and bottoms are expanded using the
// script unicharset.
// If non-empty, xheight data for the fonts are written to the xheights_file.
void SetPropertiesForInputFile(const string& script_dir,
                               const string& input_unicharset_file,
                               const string& output_unicharset_file,
                               const string& output_xheights_file) {
  UNICHARSET unicharset;

  // Load the input unicharset
  unicharset.load_from_file(input_unicharset_file.c_str());
  tprintf("Loaded unicharset of size %d from file %s\n", unicharset.size(),
          input_unicharset_file.c_str());

  // Set unichar properties
  tprintf("Setting unichar properties\n");
  SetupBasicProperties(true, false, &unicharset);
  string xheights_str;
  for (int s = 0; s < unicharset.get_script_table_size(); ++s) {
    // Load the unicharset for the script if available.
    string filename = script_dir + "/" +
        unicharset.get_script_from_script_id(s) + ".unicharset";
    UNICHARSET script_set;
    if (script_set.load_from_file(filename.c_str())) {
      unicharset.SetPropertiesFromOther(script_set);
    }
    // Load the xheights for the script if available.
    filename = script_dir + "/" + unicharset.get_script_from_script_id(s) +
        ".xheights";
    string script_heights;
    if (File::ReadFileToString(filename, &script_heights))
      xheights_str += script_heights;
  }
  if (!output_xheights_file.empty())
    File::WriteStringToFileOrDie(xheights_str, output_xheights_file);
  for (int c = SPECIAL_UNICHAR_CODES_COUNT; c < unicharset.size(); ++c) {
    if (unicharset.PropertiesIncomplete(c)) {
      tprintf("Warning: properties incomplete for index %d = %s\n",
              c, unicharset.id_to_unichar(c));
    }
  }

  // Write the output unicharset
  tprintf("Writing unicharset to file %s\n", output_unicharset_file.c_str());
  unicharset.save_to_file(output_unicharset_file.c_str());
}