//===- RealPath.h ---------------------------------------------------------===//
//
//                     The MCLinker Project
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef MCLD_REAL_PATH_H
#define MCLD_REAL_PATH_H
#ifdef ENABLE_UNITTEST
#include <gtest.h>
#endif
#include "mcld/Support/Path.h"
#include <string>

namespace mcld {
namespace sys  {
namespace fs   {

/** \class RealPath
 *  \brief The canonicalized absolute pathname.
 *
 */
class RealPath : public Path
{
public:
  typedef Path::ValueType  ValueType;
  typedef Path::StringType StringType;

public:
  RealPath();
  explicit RealPath(const ValueType* s );
  explicit RealPath(const StringType &s );
  explicit RealPath(const Path& pPath);

  ~RealPath();

  RealPath& assign(const Path& pPath);

protected:
  void initialize();
};

} // namespace of fs
} // namespace of sys
} // namespace of mcld

//-------------------------------------------------------------------------//
//                              STL compatible functions                   //
//-------------------------------------------------------------------------//
namespace std {

template<>
struct less<mcld::sys::fs::RealPath> : public binary_function<
                                                     mcld::sys::fs::RealPath,
                                                     mcld::sys::fs::RealPath,
                                                     bool>
{
  bool operator() (const mcld::sys::fs::RealPath& pX,
                   const mcld::sys::fs::RealPath& pY) const {
    if (pX.native().size() < pY.native().size())
      return true;
    return (pX.native() < pY.native());
  }
};

} // namespace of std


#endif