////////////////////////////////////////////////////////////////////////////////
// Copyright 2018 Google LLC.
//
// This software is licensed under the terms defined in the Widevine Master
// License Agreement. For a copy of this agreement, please contact
// widevine-licensing@google.com.
////////////////////////////////////////////////////////////////////////////////

#include "common/string_util.h"

#include <bitset>
#include <sstream>
#include <string>
#include "util/status.h"

namespace widevine {
namespace string_util {

util::Status BitsetStringToBinaryString(const std::string& bitset, std::string* output) {
  if (output == nullptr) {
    return util::Status(util::error::INTERNAL, "output is nullptr.");
  }

  std::stringstream sstream(bitset);
  for (size_t i = 0; i < bitset.size(); i += 8) {
    std::bitset<8> bits;
    sstream >> bits;
    char c = static_cast<char>(bits.to_ulong());
    *output += c;
  }

  return util::OkStatus();
}

}  // namespace string_util
}  // namespace widevine