spinner.hpp

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// MIT License
//
// Copyright (c) 2023 Miguel Ángel González Santamarta
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
 
#ifndef LLAMA_UTILS__SPINNER_HPP
#define LLAMA_UTILS__SPINNER_HPP
 
#include <cstdio>
#include <string>
 
namespace llama_utils {
 
class Spinner {
 
public:
  Spinner() {
    this->spinner = "-\\|/";
    this->index = 0;
  }
 
  void spin(std::string text) {
    fprintf(stderr, "%c %s\n", spinner[index], text.c_str());
    fflush(stderr);
    fprintf(stderr, "\033[1A\033[2K");
    index = (index + 1) % 4;
  }
  void spin() { this->spin(""); }
 
private:
  const char *spinner;
  int index = 0;
};
 
} // namespace llama_utils
 
#endif