// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <string>

#include "stout/error.h"
#include "stout/result.h"

////////////////////////////////////////////////////////////////////////

namespace os {

////////////////////////////////////////////////////////////////////////

inline Result<std::string> realpath(const std::string& path) {
  char temp[PATH_MAX];
  if (::realpath(path.c_str(), temp) == nullptr) {
    if (errno == ENOENT || errno == ENOTDIR) {
      return None();
    }

    return ErrnoError();
  }

  return std::string(temp);
}

////////////////////////////////////////////////////////////////////////

} // namespace os

////////////////////////////////////////////////////////////////////////
