Method execute

src/query.cpp:1929–1980

execute the search in a new thread and send results to a pipe

// execute the search in a new thread and send results to a pipe
void Query::execute(int pipe_fd)
{
  Static::output = fdopen(pipe_fd, "wb");

  if (Static::output != NULL)
  {
    try
    {
      ugrep();
    }

    catch (reflex::regex_error& error)
    {
      what_.assign(error.what());

      // error position in the pattern
      error_ = static_cast<int>(error.pos());

      // subtract 4 for (?m) or (?misx)
      if (error_ >= 4 + flag_ignore_case + flag_dotall + flag_free_space)
        error_ -= 4 + flag_ignore_case + flag_dotall + flag_free_space;

      // subtract 2 for -F
      if (flag_fixed_strings && error_ >= 2)
        error_ -= 2;

      // subtract 2 or 3 for -x or -w
      if (flags_[27].flag && error_ >= 2)
        error_ -= 2;
      else if (flags_[25].flag && error_ >= 3)
        error_ -= 3;
    }

    catch (std::exception& error)
    {
      what_.assign(error.what());

      // error at the end of the line, not within
      error_ = line_wsize();
    }

    fclose(Static::output);
    Static::output = NULL;
  }
  else
  {
    what_.assign("cannot fdopen pipe");

    // error at the end of the line, not within
    error_ = line_wsize();
  }
}

// cursor up
void Query::up()