/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#ifndef _STLP_STRING_IO_C

#define _STLP_STRING_IO_C

#ifndef _STLP_STRING_IO_H

# include <stl/_string_io.h>

#endif

#ifndef _STLP_INTERNAL_CTYPE_H

# include <stl/_ctype.h>

#endif

# ifdef _STLP_DEBUG

#  define basic_string _Nondebug_string

# endif

_STLP_BEGIN_NAMESPACE

# if defined (_STLP_OWN_IOSTREAMS)

#  define _STLP_USING_IO

# else

#  define _STLP_USING_IO _STLP_USING_VENDOR_STD

# endif

#if defined (_STLP_USE_NEW_IOSTREAMS)

template <class _CharT, class _Traits>

bool _STLP_CALL

__stlp_string_fill(basic_ostream<_CharT, _Traits>& __os,

                  basic_streambuf<_CharT, _Traits>* __buf,

                  size_t __n)

{

  _CharT __f = __os.fill();

  size_t __i;

  bool __ok = true;

  for (__i = 0; __i < __n; ++__i)

    __ok = __ok && !_Traits::eq_int_type(__buf->sputc(__f), _Traits::eof());

  return __ok;

}

template <class _CharT, class _Traits, class _Alloc>

basic_ostream<_CharT, _Traits>& _STLP_CALL

operator<<(basic_ostream<_CharT, _Traits>& __os, 

           const basic_string<_CharT,_Traits,_Alloc>& __s)

{

  _STLP_USING_IO

  typedef basic_ostream<_CharT, _Traits> __ostream;

  typename __ostream::sentry __sentry(__os);

  bool __ok = false;

  if (__sentry) {

    __ok = true;

    size_t __n = __s.size();

    size_t __pad_len = 0;

    const bool __left = (__os.flags() & __ostream::left) != 0;

    const size_t __w = __os.width(0);

    basic_streambuf<_CharT, _Traits>* __buf = __os.rdbuf();

    if (__n < __w) {

      __pad_len = __w - __n;

    }

    if (!__left)

      __ok = __stlp_string_fill(__os, __buf, __pad_len);    

    __ok = __ok && (__buf->sputn(__s.data(), streamsize(__n)) == streamsize(__n));

    if (__left)

      __ok = __ok && __stlp_string_fill(__os, __buf, __pad_len);

  }

  if (!__ok)

    __os.setstate(__ostream::failbit);

  return __os;

}

template <class _CharT, class _Traits, class _Alloc>

basic_istream<_CharT, _Traits>& _STLP_CALL 

operator>>(basic_istream<_CharT, _Traits>& __is,

           basic_string<_CharT,_Traits, _Alloc>& __s)

{

  _STLP_USING_IO

  typedef basic_istream<_CharT, _Traits> __istream;

  typename __istream::sentry __sentry(__is);

  if (__sentry) {

    basic_streambuf<_CharT, _Traits>* __buf = __is.rdbuf();

    typedef ctype<_CharT> _C_type;

#ifdef _STLP_OWN_IOSTREAMS

    //    const _C_type& _Ctype = use_facet<_C_type>(__loc);

    const _C_type& _Ctype = *(const _C_type*)__is._M_ctype_facet();

#else

# if defined (_STLP_MSVC) && (_STLP_MSVC <= 1200 ) || defined (__ICL)

    const locale& __loc = __is.getloc();

    const _C_type& _Ctype = use_facet(__loc , ( _C_type * ) 0, true);

# elif defined (__SUNPRO_CC)

    const locale& __loc = __is.getloc();

    const _C_type& _Ctype = use_facet(__loc , ( _C_type * ) 0);

# else

    const locale& __loc = __is.getloc();

    const _C_type& _Ctype = use_facet<_C_type>(__loc);

# endif

#endif

    __s.clear();

    size_t __n = __is.width(0);

    if (__n == 0)

      __n = __STATIC_CAST(size_t,-1);

    else

      __s.reserve(__n);

    while (__n-- > 0) {

      typename _Traits::int_type __c1 = __buf->sbumpc();

      if (_Traits::eq_int_type(__c1, _Traits::eof())) {

        __is.setstate(__istream::eofbit);

        break;

      }

      else {

        _CharT __c = _Traits::to_char_type(__c1);

        if (_Ctype.is(_C_type::space, __c)) {

          if (_Traits::eq_int_type(__buf->sputbackc(__c), _Traits::eof()))

            __is.setstate(__istream::failbit);

          break;

        }

#ifdef __SYMBIAN32__

        else if (__c == '\b') {

          __s.pop_back();

        }

#endif

        else

          __s.push_back(__c);

      }

    }

    // If we have read no characters, then set failbit.

    if (__s.size() == 0)

      __is.setstate(__istream::failbit);

  }

  else

    __is.setstate(__istream::failbit);

  return __is;

}

template <class _CharT, class _Traits, class _Alloc>    

basic_istream<_CharT, _Traits>& _STLP_CALL 

getline(basic_istream<_CharT, _Traits>& __is,

        basic_string<_CharT,_Traits,_Alloc>& __s,

        _CharT __delim)

{

  _STLP_USING_IO

  typedef basic_istream<_CharT, _Traits> __istream;

  size_t __nread = 0;

  typename basic_istream<_CharT, _Traits>::sentry __sentry(__is, true);

  if (__sentry) {

    basic_streambuf<_CharT, _Traits>* __buf = __is.rdbuf();

    __s.clear();

    while (__nread < __s.max_size()) {

      int __c1 = __buf->sbumpc();

      if (_Traits::eq_int_type(__c1, _Traits::eof())) {

        __is.setstate(__istream::eofbit);

        break;

      }

      else {

        ++__nread;

        _CharT __c = _Traits::to_char_type(__c1);

        if (!_Traits::eq(__c, __delim)) 

          __s.push_back(__c);

        else

          break;              // Character is extracted but not appended.

      }

    }

  }

  if (__nread == 0 || __nread >= __s.max_size())

    __is.setstate(__istream::failbit);

  return __is;

}

#elif ! defined ( _STLP_USE_NO_IOSTREAMS )

// (reg) For Watcom IO, _OSTREAM_DLL tells if ostream class is in .exe or in .dll

template <class _CharT, class _Traits, class _Alloc>

_OSTREAM_DLL&  _STLP_CALL operator<<(_OSTREAM_DLL& __os, 

                    const basic_string<_CharT,_Traits,_Alloc>& __s)

{

  _STLP_USING_IO

  streambuf* __buf = __os.rdbuf();

  if (__buf) {

    size_t __n = __s.size();

    size_t __pad_len = 0;

    const bool __left = (__os.flags() & ios::left) !=0;

    const size_t __w = __os.width();

    if (__n < __w) { 

      __pad_len = __w - __n; 

    } 

    if (!__left)

      __stlp_string_fill(__os, __buf, __pad_len);

    const size_t __nwritten = __buf->sputn(__s.data(), __n);

    if (__left)

      __stlp_string_fill(__os, __buf, __pad_len);

    if (__nwritten != __n)

      __os.clear(__os.rdstate() | ios::failbit);

    __os.width(0);

  }

  else

    __os.clear(__os.rdstate() | ios::badbit);

  return __os;

}

template <class _CharT, class _Traits, class _Alloc>

_ISTREAM_DLL& _STLP_CALL operator>>(_ISTREAM_DLL& __is, basic_string<_CharT,_Traits,_Alloc>& __s)

{

  _STLP_USING_IO

  if (!__is)

    return __is;

  streambuf* __buf = __is.rdbuf();

  if (__buf) {

    if (__is.flags() & ios::skipws) {

      //      _CharT __c;

      int __c;

      do {

        __c = __buf->sbumpc();

      }

      while (__c != EOF && isspace((unsigned char)__c));

      if (__c == EOF) {

        __is.clear(__is.rdstate() | ios::eofbit | ios::failbit);

      }

      else {

	if (__buf->sputbackc(__c) == EOF)

	  __is.clear(__is.rdstate() | ios::failbit);

      }

    }

    // If we arrive at end of file (or fail for some other reason) while

    // still discarding whitespace, then we don't try to read the string.

    if (__is) {

      __s.clear();

      size_t __n = __is.width();

      if (__n == 0)

        __n = __STATIC_CAST(size_t,-1);

      else

        __s.reserve(__n);

      while (__n-- > 0) {

        int __c1 = __buf->sbumpc();

        if (__c1 == EOF) {

          __is.clear(__is.rdstate() | ios::eofbit);

          break;

        }

        else {

          _CharT __c = _Traits::to_char_type(__c1);

          if (isspace((unsigned char) __c)) {

            if (__buf->sputbackc(__c) == EOF)

              __is.clear(__is.rdstate() | ios::failbit);

            break;

          }

          else

            __s.push_back(__c);

        }

      }

      // If we have read no characters, then set failbit.

      if (__s.size() == 0)

        __is.clear(__is.rdstate() | ios::failbit);

    }

    __is.width(0);

  }

  else                          // We have no streambuf.

    __is.clear(__is.rdstate() | ios::badbit);

  return __is;

}

template <class _CharT, class _Traits, class _Alloc>    

_ISTREAM_DLL& _STLP_CALL getline(_ISTREAM_DLL& __is,

                 basic_string<_CharT,_Traits,_Alloc>& __s,

                 _CharT __delim)

{

  _STLP_USING_IO

  streambuf* __buf = __is.rdbuf();

  if (__buf) {

    size_t __nread = 0;

    if (__is) {

      __s.clear();

      while (__nread < __s.max_size()) {

        int __c1 = __buf->sbumpc();

        if (__c1 == EOF) {

          __is.clear(__is.rdstate() | ios::eofbit);

          break;

        }

        else {

          ++__nread;

          _CharT __c = _Traits::to_char_type(__c1);

          if (!_Traits::eq(__c, __delim)) 

            __s.push_back(__c);

          else

            break;              // Character is extracted but not appended.

        }

      }

    }

    if (__nread == 0 || __nread >= __s.max_size())

      __is.clear(__is.rdstate() | ios::failbit);

  }

  else

    __is.clear(__is.rdstate() | ios::badbit);

  return __is;

}

# endif /* _STLP_NEW_IOSTREAMS */

_STLP_END_NAMESPACE

// # undef _STLP_USING_IO

# undef basic_string

#endif