random_string.h

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// SPDX-License-Identifier: Apache-2.0
// Copyright 2022 Stéphane Caron
 
#pragma once
 
#include <algorithm>
#include <random>
#include <string>
 
namespace vulp::utils {
 
inline std::string random_string(unsigned length = 16) {
  std::string alphanum(
      "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
  length = (length <= 62) ? length : 62;  // 62 == alphanum.size()
  std::random_device device;
  std::mt19937 generator(device());
  std::shuffle(alphanum.begin(), alphanum.end(), generator);
  return alphanum.substr(0, length);
}
 
}  // namespace vulp::utils