/*

 * Portions Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 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.

 *

 */

#include "stlport_prefix.h"

#include <istream>

#include <fstream>

#if defined (_STLP_MSVC) || defined (__MWERKS__) || defined (__ICL) || defined (__ISCPP__) || defined(__SYMBIAN32__)

#  define _STLP_USE_NOT_INIT_SEGMENT

#  include <iostream>

#endif

#if defined(__SYMBIAN32__WSD__)

# include "libstdcppwsd.h"

#endif

#include "stdio_streambuf.h"

#include "aligned_buffer.h"

#include "_stdio_file.h"

#include "c_locale.h"

// boris : note this is repeated in <iostream>

#ifndef _STLP_USE_NAMESPACES

// in case of SGI iostreams, we have to rename our streams not to clash with those

// provided in native lib

#  define cin _STLP_cin

#  define cout _STLP_cout

#  define cerr _STLP_cerr

#  define clog _STLP_clog

#endif

_STLP_BEGIN_NAMESPACE

#if defined (__BORLANDC__) && ! defined (_STLP_USE_GLIBC)

using _STLP_VENDOR_CSTD::_streams;

#endif

// This file handles iostream initialization.  It is inherently

// nonportable, since the C++ language definition provides no mechanism

// for controlling order of initialization of nonlocal objects.

// Initialization has three parts, which must be performed in the following

// order:

//  (1) Initialize the locale system

//  (2) Call the constructors for the eight global stream objects.

//  (3) Create streambufs for the global stream objects, and initialize

//      the stream objects by calling the init() member function.

#if defined (_STLP_USE_NOT_INIT_SEGMENT)

// Definitions of the eight global I/O objects that are declared in

// <iostream>. For some compilers we use pragmas to put the global I/O

// objects into an initialization segment that will not

// be executed. We then explicitly invoke the constructors

// with placement new in ios_base::_S_initialize()

#  if defined (__MWERKS__)

#    pragma suppress_init_code on

#  else

#    pragma init_seg("STLPORT_NO_INIT")

#  endif

#if defined(__SYMBIAN32__NO_STATIC_IMPORTS__)

istream cin(0);

#  ifdef _STLP_REDIRECT_STDSTREAMS

ofstream cout;

ofstream cerr;

ofstream clog;

#  else

ostream cout(0);

ostream cerr(0);

ostream clog(0);

#  endif

#ifndef _STLP_NO_WCHAR_T

wistream wcin(0);

wostream wcout(0);

wostream wcerr(0);

wostream wclog(0);

#endif

_STLP_DECLSPEC ostream& get_cerr()

	{	

	return cerr;

	}

_STLP_DECLSPEC ostream& get_cout()

	{

    return cout;

	}

_STLP_DECLSPEC ostream& get_clog()

	{

    return clog;

	}

_STLP_DECLSPEC istream& get_cin()

	{

    return cin;

	}

#  ifndef _STLP_NO_WCHAR_T

_STLP_DECLSPEC wostream& get_wcerr()

	{

	return wcerr;

	}

_STLP_DECLSPEC wostream& get_wcout()

	{

	return wcout;

	}

_STLP_DECLSPEC wostream& get_wclog()

	{

    return wclog;

	}

_STLP_DECLSPEC wistream& get_wcin()

	{

    return wcin;

	}   

#endif //_STLP_NO_WCHAR_T

# elif defined (__SYMBIAN32__WSD__)

_STLP_DECLSPEC ostream& get_cerr()

	{	

	return *get_libcpp_wsd().wsd_cerr;

	}

_STLP_DECLSPEC ostream& get_cout()

	{

    return *get_libcpp_wsd().wsd_cout;

	}

_STLP_DECLSPEC ostream& get_clog()

	{

    return *get_libcpp_wsd().wsd_clog;

	}

_STLP_DECLSPEC istream& get_cin()

	{

    return *get_libcpp_wsd().wsd_cin;

	}

#  ifndef _STLP_NO_WCHAR_T

_STLP_DECLSPEC wostream& get_wcerr()

	{

	return *get_libcpp_wsd().wsd_wcerr;

	}

_STLP_DECLSPEC wostream& get_wcout()

	{

	return *get_libcpp_wsd().wsd_wcout;

	}

_STLP_DECLSPEC wostream& get_wclog()

	{

    return *get_libcpp_wsd().wsd_wclog;

	}

_STLP_DECLSPEC wistream& get_wcin()

	{

    return *get_libcpp_wsd().wsd_wcin;

	}   

#endif //_STLP_NO_WCHAR_T

#define _S_count 			get_ios_base_Init_S_count()

#define _S_was_synced 		get_ios_base_S_was_synced()

#else

_STLP_DECLSPEC istream cin(0);

#  ifdef _STLP_REDIRECT_STDSTREAMS

_STLP_DECLSPEC ofstream cout;

_STLP_DECLSPEC ofstream cerr;

_STLP_DECLSPEC ofstream clog;

#  else

_STLP_DECLSPEC ostream cout(0);

_STLP_DECLSPEC ostream cerr(0);

_STLP_DECLSPEC ostream clog(0);

#  endif

#ifndef _STLP_NO_WCHAR_T

_STLP_DECLSPEC wistream wcin(0);

_STLP_DECLSPEC wostream wcout(0);

_STLP_DECLSPEC wostream wcerr(0);

_STLP_DECLSPEC wostream wclog(0);

#endif

#endif //__SYMBIAN32__NO_STATIC_IMPORTS__

#  if defined (__MWERKS__)

#    pragma suppress_init_code off

#  endif

#else

// Definitions of the eight global I/O objects that are declared in

// <iostream>.  Disgusting hack: we deliberately define them with the

// wrong types so that the constructors don't get run automatically.

// We need special tricks to make sure that these objects are struct-

// aligned rather than byte-aligned.

// This is not portable.  Declaring a variable with different types in

// two translations units is "undefined", according to the C++ standard.

// Most compilers, however, silently accept this instead of diagnosing

// it as an error.

#  ifndef __DMC__

_STLP_DECLSPEC _Stl_aligned_buffer<istream> cin;

_STLP_DECLSPEC _Stl_aligned_buffer<ostream> cout;

_STLP_DECLSPEC _Stl_aligned_buffer<ostream> cerr;

_STLP_DECLSPEC _Stl_aligned_buffer<ostream> clog;

#  else

_Stl_aligned_buffer<istream> cin;

_Stl_aligned_buffer<ostream> cout;

_Stl_aligned_buffer<ostream> cerr;

_Stl_aligned_buffer<ostream> clog;

#    pragma alias("?cin@std@@3V?$basic_istream@std@DV?$char_traits@std@D@1@@1@A", "?cin@std@@3T?$_Stl_aligned_buffer@std@V?$basic_istream@std@DV?$char_traits@std@D@1@@1@@1@A")

#    pragma alias("?cout@std@@3V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@A", "?cout@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@@1@A")

#    pragma alias("?cerr@std@@3V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@A", "?cerr@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@@1@A")

#    pragma alias("?clog@std@@3V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@A", "?clog@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@@1@A")

#  endif

#  ifndef _STLP_NO_WCHAR_T

#    ifndef __DMC__

_STLP_DECLSPEC _Stl_aligned_buffer<wistream> wcin;

_STLP_DECLSPEC _Stl_aligned_buffer<wostream> wcout;

_STLP_DECLSPEC _Stl_aligned_buffer<wostream> wcerr;

_STLP_DECLSPEC _Stl_aligned_buffer<wostream> wclog;

#    else

_Stl_aligned_buffer<wistream> wcin;

_Stl_aligned_buffer<wostream> wcout;

_Stl_aligned_buffer<wostream> wcerr;

_Stl_aligned_buffer<wostream> wclog;

#      pragma alias("?wcin@std@@3V?$basic_istream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wcin@std@@3T?$_Stl_aligned_buffer@std@V?$basic_istream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")

#      pragma alias("?wcout@std@@3V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wcout@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")

#      pragma alias("?wcerr@std@@3V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wcerr@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")

#      pragma alias("?wclog@std@@3V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wclog@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")

#    endif

#  endif

#endif /* STL_MSVC || __MWERKS__ */

// Member functions from class ios_base and ios_base::Init

#if !defined(__SYMBIAN32__WSD__)

long ios_base::Init::_S_count = 0;

// by default, those are synced

bool ios_base::_S_was_synced = true;

# endif //__SYMBIAN32__WSD__

_STLP_DECLSPEC ios_base::Init::Init() {

  if (_S_count++ == 0) {

    _Locale_init();

    ios_base::_S_initialize();

    _Filebuf_base::_S_initialize();

  }

}

_STLP_DECLSPEC ios_base::Init::~Init() {

  if (--_S_count == 0) {

    ios_base::_S_uninitialize();

    _Locale_final();

  }

}

#ifdef __SYMBIAN32__

#undef _FILE_fd

#define _FILE_fd fileno

#endif

static filebuf*

_Stl_create_filebuf(FILE* f, ios_base::openmode mode ) {

  basic_filebuf<char, char_traits<char> >* result =

    new basic_filebuf<char, char_traits<char> >();

  _STLP_TRY {

    result->_M_open(_FILE_fd(f), mode);

  }

  _STLP_CATCH_ALL {}

  if (!result->is_open()) {

    delete result;

    result = 0;

  }

  return result;

}

#if !defined (_STLP_NO_WCHAR_T)

static wfilebuf*

_Stl_create_wfilebuf(FILE* f, ios_base::openmode mode) {

  basic_filebuf<wchar_t, char_traits<wchar_t> >* result =

    new basic_filebuf<wchar_t, char_traits<wchar_t> >();

  _STLP_TRY {

    result->_M_open(_FILE_fd(f), mode);

  }

  _STLP_CATCH_ALL {}

  if (!result->is_open()) {

    delete result;

    result = 0;

  }

  return result;

}

#endif

void  _STLP_CALL ios_base::_S_initialize() {

#if !defined (_STLP_HAS_NO_NAMESPACES) && !defined (_STLP_DONT_USE_PRIV_NAMESPACE)

  using _STLP_PRIV stdio_istreambuf;

  using _STLP_PRIV stdio_ostreambuf;

#endif

  _STLP_TRY {

    istream* ptr_cin  = new(static_cast<void*>(&cin))  istream(0);

#  ifdef _STLP_REDIRECT_STDSTREAMS

    ofstream* ptr_cout = new(static_cast<void*>(&cout)) ofstream;

    ofstream* ptr_cerr = new(static_cast<void*>(&cerr)) ofstream;

    ofstream* ptr_clog = new(static_cast<void*>(&clog)) ofstream;

    // Initialize the four narrow stream objects.

    if (_S_was_synced) {

      ptr_cin->init(new stdio_istreambuf(stdin));

      ptr_cout->open("/stdout.txt", ios::out);

      ptr_cerr->open("/stderr.txt", ios::out);

      ptr_clog->open("/stdlog.txt", ios::out);

    } else {

      ptr_cin->init(_Stl_create_filebuf(stdin, ios_base::in));

      ptr_cin->init(_Stl_create_filebuf(stdout, ios_base::out));

      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));

      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));

    }

    ptr_cin->tie(ptr_cout);

    ptr_cerr->setf(ios_base::unitbuf);

#  else

    ostream* ptr_cout = new(static_cast<void*>(&cout)) ostream(0);

    ostream* ptr_cerr = new(static_cast<void*>(&cerr)) ostream(0);

    ostream* ptr_clog = new(static_cast<void*>(&clog)) ostream(0);

    // Initialize the four narrow stream objects.

    if (_S_was_synced) {

      ptr_cin->init(new stdio_istreambuf(stdin));

      ptr_cout->init(new stdio_ostreambuf(stdout));

      ptr_cerr->init(new stdio_ostreambuf(stdout));

      ptr_clog->init(new stdio_ostreambuf(stdout));

    } else {

      ptr_cin->init(_Stl_create_filebuf(stdin, ios_base::in));

      ptr_cin->init(_Stl_create_filebuf(stdout, ios_base::out));

      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));

      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));

    }

    ptr_cin->tie(ptr_cout);

    ptr_cerr->setf(ios_base::unitbuf);

#  endif /* _STLP_REDIRECT_STDSTREAMS */

#  ifndef _STLP_NO_WCHAR_T

    // Run constructors for the four wide stream objects.

    wistream* ptr_wcin  = new(&wcin)  wistream(0);

    wostream* ptr_wcout = new(&wcout) wostream(0);

    wostream* ptr_wcerr = new(&wcerr) wostream(0);

    wostream* ptr_wclog = new(&wclog) wostream(0);

    wfilebuf* win  = _Stl_create_wfilebuf(stdin, ios_base::in);

    wfilebuf* wout = _Stl_create_wfilebuf(stdout, ios_base::out);

    wfilebuf* werr = _Stl_create_wfilebuf(stdout, ios_base::out);

    wfilebuf* wlog = _Stl_create_wfilebuf(stdout, ios_base::out);

    ptr_wcin->init(win);

    ptr_wcout->init(wout);

    ptr_wcerr->init(werr);

    ptr_wclog->init(wlog);

    ptr_wcin->tie(ptr_wcout);

    ptr_wcerr->setf(ios_base::unitbuf);

#  endif /*  _STLP_NO_WCHAR_T */

  }

  _STLP_CATCH_ALL {}

}

void _STLP_CALL ios_base::_S_uninitialize() {

  // Note that destroying output streambufs flushes the buffers.

  istream* ptr_cin  = &cin;

  ostream* ptr_cout = &cout;

  ostream* ptr_cerr = &cerr;

  ostream* ptr_clog = &clog;

#ifndef _STLP_NO_WCHAR_T

  wistream* ptr_wcin  = &wcin;

  wostream* ptr_wcout = &wcout;

  wostream* ptr_wcerr = &wcerr;

  wostream* ptr_wclog = &wclog;

#endif

  // we don't want any exceptions being thrown here

  ptr_cin->exceptions(0);

  ptr_cout->exceptions(0);

  ptr_cerr->exceptions(0);

  ptr_clog->exceptions(0);

  delete ptr_cin->rdbuf(0);

  delete ptr_cout->rdbuf(0);

  delete ptr_cerr->rdbuf(0);

  delete ptr_clog->rdbuf(0);

  _Destroy(ptr_cin);

  _Destroy(ptr_cout);

  _Destroy(ptr_cerr);

  _Destroy(ptr_clog);

#ifndef _STLP_NO_WCHAR_T

  // we don't want any exceptions being thrown here

  ptr_wcin->exceptions(0);

  ptr_wcout->exceptions(0);

  ptr_wcerr->exceptions(0);

  ptr_wclog->exceptions(0);

  delete ptr_wcin->rdbuf(0);

  delete ptr_wcout->rdbuf(0);

  delete ptr_wcerr->rdbuf(0);

  delete ptr_wclog->rdbuf(0);

  _Destroy(ptr_wcin);

  _Destroy(ptr_wcout);

  _Destroy(ptr_wcerr);

  _Destroy(ptr_wclog);

#endif

}

_STLP_DECLSPEC bool _STLP_CALL ios_base::sync_with_stdio(bool sync) {

#  if !defined (_STLP_HAS_NO_NAMESPACES) && !defined (_STLP_DONT_USE_PRIV_NAMESPACE)

  using _STLP_PRIV stdio_istreambuf;

  using _STLP_PRIV stdio_ostreambuf;

#  endif

  bool was_synced =  _S_was_synced;

  // if by any chance we got there before std streams initialization,

  // just set the sync flag and exit

  if (Init::_S_count == 0) {

    _S_was_synced = sync;

    return was_synced;

  }

  istream* ptr_cin  = &cin;

  ostream* ptr_cout = &cout;

  ostream* ptr_cerr = &cerr;

  ostream* ptr_clog = &clog;

  streambuf* old_cin  = ptr_cin->rdbuf();

  streambuf* old_cout = ptr_cout->rdbuf();

  streambuf* old_cerr = ptr_cerr->rdbuf();

  streambuf* old_clog = ptr_clog->rdbuf();

  streambuf* new_cin  = 0;

  streambuf* new_cout = 0;

  streambuf* new_cerr = 0;

  streambuf* new_clog = 0;

  _STLP_TRY {

    if (sync && !was_synced) {

      new_cin  = new stdio_istreambuf(stdin);

      new_cout = new stdio_ostreambuf(stdout);

      new_cerr = new stdio_ostreambuf(stdout);

      new_clog = new stdio_ostreambuf(stdout);

    }

    else if (!sync && was_synced) {

      new_cin  = _Stl_create_filebuf(stdin, ios_base::in);

      new_cout = _Stl_create_filebuf(stdout, ios_base::out);

      new_cerr = _Stl_create_filebuf(stdout, ios_base::out);

      new_clog = _Stl_create_filebuf(stdout, ios_base::out);

    }

  }

  _STLP_CATCH_ALL {}

  if (new_cin && new_cout && new_cerr && new_clog) {

    ptr_cin->rdbuf(new_cin);

    ptr_cout->rdbuf(new_cout);

    ptr_cerr->rdbuf(new_cerr);

    ptr_clog->rdbuf(new_clog);

    delete old_cin;

    delete old_cout;

    delete old_cerr;

    delete old_clog;

  }

  else {

    delete new_cin;

    delete new_cout;

    delete new_cerr;

    delete new_clog;

  }

  return was_synced;

}

_STLP_END_NAMESPACE

// Local Variables:

// mode:C++

// End: