getcwd.hpp

Go to the documentation of this file.

// 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.

#ifndef __STOUT_OS_POSIX_GETCWD_HPP__
#define __STOUT_OS_POSIX_GETCWD_HPP__

#include <string>

#include <stout/try.hpp>


namespace os {

inline std::string getcwd()
{
  size_t size = 100;

  while (true) {
    char* temp = new char[size];
    if (::getcwd(temp, size) == temp) {
      std::string result(temp);
      delete[] temp;
      return result;
    } else {
      if (errno != ERANGE) {
        delete[] temp;
        return std::string();
      }
      size *= 2;
      delete[] temp;
    }
  }

  return std::string();
}

} // namespace os {


#endif // __STOUT_OS_POSIX_GETCWD_HPP__