/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

* Redistribution and use in source and binary forms, with or without 

* modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this 

* list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice, 

* this list of conditions and the following disclaimer in the documentation 

* and/or other materials provided with the distribution.

* Neither the name of Nokia Corporation nor the names of its contributors 

* may be used to endorse or promote products derived from this software 

* without specific prior written permission.

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 

* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 

* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 

* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 

* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 

* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 

* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*

* Description:

*

*/

#ifndef _STLP_INTERNAL_STREAMBUF

#include <stl/_streambuf.h>

#endif

#ifndef _STLP_ISTREAM

#include <istream>              // Includes <ostream>, <ios>, <iosfwd>

#endif

#ifndef _STLP_STRING_H

#include <stl/_string.h>

#endif

_STLP_BEGIN_NAMESPACE

#ifndef _STLP_USE_NAMESPACES

# define strstream _STLP_strstream 

# define ostrstream _STLP_ostrstream

# define istrstream _STLP_istrstream

# define strstreambuf _STLP_strstreambuf

#endif

//----------------------------------------------------------------------

// Class strstreambuf, a streambuf class that manages an array of char.

// Note that this class is not a template.

#ifdef __SYMBIAN32__

class strstreambuf : public basic_streambuf<char, char_traits<char> > 

#else

class _STLP_CLASS_DECLSPEC strstreambuf : public basic_streambuf<char, char_traits<char> >

#endif

{

public:                         // Types.

  typedef char_traits<char>              _Traits;

  typedef basic_streambuf<char, char_traits<char> > _Base;

  typedef void* (*__alloc_fn)(size_t);

  typedef void (*__free_fn)(void*);

public:                         // Constructor, destructor

  explicit strstreambuf(streamsize _Initial_capacity = 0);

  _STLP_DECLSPEC strstreambuf(__alloc_fn, __free_fn);

  _STLP_DECLSPEC strstreambuf(char* __get, streamsize __n, char* __put = 0);

  _STLP_DECLSPEC strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0);

  _STLP_DECLSPEC strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0);

  _STLP_DECLSPEC strstreambuf(const char* __get, streamsize __n);

  _STLP_DECLSPEC strstreambuf(const signed char* __get, streamsize __n);

  _STLP_DECLSPEC strstreambuf(const unsigned char* __get, streamsize __n);

  virtual ~strstreambuf();

public:                         // strstreambuf operations.

  _STLP_DECLSPEC void freeze(bool = true);

  _STLP_DECLSPEC char* str();

  _STLP_DECLSPEC int pcount() const;

protected:                      // Overridden virtual member functions.

  virtual int_type overflow(int_type __c  = _Traits::eof());

  virtual int_type pbackfail(int_type __c = _Traits::eof());

  virtual int_type underflow();

  virtual _Base* setbuf(char* __buf, streamsize __n);

  virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,

                           ios_base::openmode __mode 

                                      = ios_base::in | ios_base::out);

  virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode 

                                      = ios_base::in | ios_base::out);

private:                        // Helper functions.

  // Dynamic allocation, possibly using _M_alloc_fun and _M_free_fun.

  char* _M_alloc(size_t);

  inline void  _M_free(char*);

  // Helper function used in constructors.

  void _M_setup(char* __get, char* __put, streamsize __n);

private:                        // Data members.

  __alloc_fn _M_alloc_fun;

  __free_fn  _M_free_fun;

  bool _M_dynamic  : 1;

  bool _M_frozen   : 1;

  bool _M_constant : 1;

#ifdef __SYMBIAN32__

  char* _pfrozenendsave;

  char* _pgetfrozenendsave;

#endif

};

inline strstreambuf::~strstreambuf()

{

#ifdef __SYMBIAN32__

  if (_M_dynamic && !_M_frozen)

  {

  	if (_M_free_fun)

  		_M_free_fun(eback());

  	else

  		_M_free(eback());

  }

#else  

	if (_M_dynamic && !_M_frozen)

        _M_free(eback());

#endif	

}

inline void strstreambuf::_M_free(char* p)

{

  if (p)

    if (_M_free_fun)

      _M_free_fun(p);

    else

      delete[] p;

}

//----------------------------------------------------------------------

// Class istrstream, an istream that manages a strstreambuf.

#ifdef __SYMBIAN32__

NONSHARABLE_CLASS (istrstream) : public basic_istream<char, char_traits<char> >

#else

class _STLP_CLASS_DECLSPEC istrstream : public basic_istream<char, char_traits<char> >

#endif

{

public:

  _STLP_DECLSPEC explicit istrstream(char*);

  _STLP_DECLSPEC explicit istrstream(const char*);

  _STLP_DECLSPEC istrstream(char* , streamsize);

  _STLP_DECLSPEC istrstream(const char*, streamsize);

  virtual ~istrstream();

  _STLP_DECLSPEC strstreambuf* rdbuf() const;

  _STLP_DECLSPEC char* str();

private:

  strstreambuf _M_buf;

};

//----------------------------------------------------------------------

// Class ostrstream

#ifdef __SYMBIAN32__

NONSHARABLE_CLASS (ostrstream) : public basic_ostream<char, char_traits<char> >

#else

class _STLP_CLASS_DECLSPEC ostrstream : public basic_ostream<char, char_traits<char> >

#endif

{

public:

  _STLP_DECLSPEC ostrstream();

  _STLP_DECLSPEC ostrstream(char*, int, ios_base::openmode = ios_base::out);

  virtual ~ostrstream();

  _STLP_DECLSPEC strstreambuf* rdbuf() const;

  _STLP_DECLSPEC void freeze(bool = true);

  _STLP_DECLSPEC char* str();

  _STLP_DECLSPEC int pcount() const;

private:

  strstreambuf _M_buf;

};

//----------------------------------------------------------------------

// Class strstream

#ifdef __SYMBIAN32__

NONSHARABLE_CLASS (strstream) : public basic_iostream<char, char_traits<char> >

#else

class _STLP_CLASS_DECLSPEC strstream : public basic_iostream<char, char_traits<char> >

#endif

{

public:

  typedef char                        char_type;

  typedef char_traits<char>::int_type int_type;

  typedef char_traits<char>::pos_type pos_type;

  typedef char_traits<char>::off_type off_type;

  _STLP_DECLSPEC strstream();

  _STLP_DECLSPEC strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);

  virtual ~strstream();

  _STLP_DECLSPEC strstreambuf* rdbuf() const;

  _STLP_DECLSPEC void freeze(bool = true);

  _STLP_DECLSPEC int pcount() const;

  _STLP_DECLSPEC char* str();

private:

  strstreambuf _M_buf;

};

_STLP_END_NAMESPACE