/*=========================================================================

  Program:   KWSys - Kitware System Library
  Module:    kwsys_std_sstream.h.in
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See http://www.cmake.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef @KWSYS_NAMESPACE@_std_sstream
#define @KWSYS_NAMESPACE@_std_sstream

#include <@KWSYS_NAMESPACE@/Configure.hxx>

/* Define this macro temporarily to keep the code readable.  */
#if !defined (KWSYS_NAMESPACE) && !defined(@KWSYS_NAMESPACE@_NAME_IS_KWSYS)
# define kwsys_std @KWSYS_NAMESPACE@_std
#endif

#if !defined(@KWSYS_NAMESPACE@_NO_ANSI_STRING_STREAM)
# ifdef _MSC_VER
#  pragma warning (push, 1)
#  pragma warning (disable: 4702)
# endif
# include <sstream>
# ifdef _MSC_VER
#  pragma warning(pop)
# endif
#else
# ifdef _MSC_VER
#  pragma warning (push, 1)
#  pragma warning (disable: 4702)
# endif
# if !defined(@KWSYS_NAMESPACE@_NO_ANSI_STREAM_HEADERS)
#  include <strstream>
# else
#  include <strstream.h>
#  if !defined(@KWSYS_NAMESPACE@_NO_STD_NAMESPACE) && !defined(@KWSYS_NAMESPACE@_FAKE_STD_NAMESPACE)
namespace std
{
  using ::ostream;
  using ::istream;
  using ::istrstream;
  using ::ostrstream;
  using ::ios;
  using ::endl;
  using ::ends;
  using ::flush;
}
#  endif
# endif
# ifdef _MSC_VER
#  pragma warning(pop)
# endif

// Only have old std::strstream classes.  Wrap them to look like new
// ostringstream and istringstream classes.

# include <@KWSYS_NAMESPACE@/std/string>

# if !defined(@KWSYS_NAMESPACE@_NO_STD_NAMESPACE)
namespace std
{
# endif

class ostringstream_cleanup
{
public:
  ostringstream_cleanup(kwsys_std::ostrstream& ostr): m_OStrStream(ostr) {}
  ~ostringstream_cleanup() { m_OStrStream.rdbuf()->freeze(0); }
  static void IgnoreUnusedVariable(const ostringstream_cleanup&) {}
protected:
  kwsys_std::ostrstream& m_OStrStream;
};

class ostringstream: public kwsys_std::ostrstream
{
public:
  typedef kwsys_std::ostrstream Superclass;
  ostringstream() {}
  kwsys_std::string str()
    {
    ostringstream_cleanup cleanup(*this);
    ostringstream_cleanup::IgnoreUnusedVariable(cleanup);
    int pcount = this->pcount();
    const char* ptr = this->Superclass::str();
    return kwsys_std::string(ptr?ptr:"", pcount);
    }
private:
  ostringstream(const ostringstream&);
  void operator=(const ostringstream&);
};

class istringstream: private kwsys_std::string, public kwsys_std::istrstream
{
public:
  typedef kwsys_std::string StdString;
  typedef kwsys_std::istrstream IStrStream;
  istringstream(): StdString(), IStrStream(StdString::c_str()) {}
  istringstream(const kwsys_std::string& s):
    StdString(s), IStrStream(StdString::c_str()) {}
  kwsys_std::string str() const { return *this; }
  void str(const kwsys_std::string& s)
    {
    // Very dangerous.  If this throws, the object is hosed.  When the
    // destructor is later called, the program is hosed too.
    this->~istringstream();
    new (this) istringstream(s);
    }
private:
  istringstream(const istringstream&);
  void operator=(const istringstream&);
};

# if !defined(@KWSYS_NAMESPACE@_NO_STD_NAMESPACE)
}
# endif

#endif

/* Undefine temporary macro.  */
#if !defined (KWSYS_NAMESPACE) && !defined(@KWSYS_NAMESPACE@_NAME_IS_KWSYS)
# undef kwsys_std
#endif

#endif
