/* Copyright (C) CJ Affiliate
  *
  * You may use, distribute and modify this code under  the
  * terms of the  GNU General Public License  version 2  or
  * later.
  *
  * You should have received a copy of the license with this
  * file. If not, you will find a copy in the "LICENSE" file
  * at https://github.com/cjdev/dual-control.
  */
 

 #ifndef _SYS_UNISTD_H_
 #define _SYS_UNISTD_H_
 
 #include <memory>
 

 #include <unistd.h>
 

 class unistd_ifc
 {
 public:

     virtual ~unistd_ifc() {}

     virtual long int sysconf (int name) const

     {
         return -1;
     }

     virtual const char *getlogin() const
     {

         return "";
     }

     virtual int seteuid (uid_t euid) const

     {
         return -1;
     };
 

 };
 

 class unistd

 {
 public:
     typedef std::shared_ptr<unistd_ifc> delegate;
 
 private:
     delegate delegate_;
 
 public:
     unistd (delegate delegate): delegate_ (delegate) {}
     unistd() : delegate_ (delegate (new unistd_ifc)) {}

     long int sysconf (int name) const

     {
         return delegate_->sysconf (name);
     }

     const char *getlogin() const
     {

         return delegate_->getlogin();
     }

     int seteuid (uid_t euid) const

     {

         return delegate_->seteuid (euid);

     };

     static unistd create();

 };
 

 template class std::shared_ptr<unistd_ifc>;

 #endif