/*

  * © Portions copyright (c) 2006-2007 Nokia Corporation.  All rights reserved.

  *

  * Copyright (c) 1999

  * Silicon Graphics Computer Systems, Inc.

  *

  * Copyright (c) 1999 

  * Boris Fomitchev

  *

  * This material is provided "as is", with absolutely no warranty expressed

  * or implied. Any use is at your own risk.

  *

  * Permission to use or copy this software for any purpose is hereby granted 

  * without fee, provided the above notices are retained on all copies.

  * Permission to modify the code and to distribute modified code is granted,

  * provided the above notices are retained, and a notice that the code was

  * modified is included with the above copyright notice.

  *

  */

 #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