// codecvt facet for multibyte code as EBCDIC
 #pragma once
#ifndef _CVT_EBCDIC_
#define _CVT_EBCDIC_
#ifndef RC_INVOKED
#include <locale>
#include <cwchar>

 #pragma pack(push,_CRT_PACKING)
 #pragma warning(push,3)

namespace stdext {
	namespace cvt {


typedef _CSTD mbstate_t _Statype;

		// TEMPLATE CLASS codecvt_ebcdic
template<class _Elem,
	unsigned char _Maxcode = 0xff>
	class codecvt_ebcdic
	: public _STD codecvt<_Elem, char, _Statype>
	{	// facet for converting between ISO-8859-1 _Elem and EBCDIC bytes
static const unsigned char _Atoe[0x100];
static const unsigned char _Etoa[0x100];

public:
 	typedef _STD codecvt<_Elem, char, _Statype> _Mybase;
	typedef typename _Mybase::result result;
	typedef char _Byte;
	typedef _Elem intern_type;
	typedef _Byte extern_type;
	typedef _Statype state_type;

	explicit codecvt_ebcdic(size_t _Refs = 0)
		: _Mybase(_Refs)
		{	// construct with ref count
		}

	virtual ~codecvt_ebcdic()
		{	// destroy the object
		}

protected:
	virtual result do_in(_Statype&,
		const _Byte *_First1, const _Byte *_Last1, const _Byte *& _Mid1,
		_Elem *_First2, _Elem *_Last2, _Elem *& _Mid2) const
		{	// convert bytes [_First1, _Last1) to [_First2, _Last)
		unsigned long _Maxc = _Maxcode;	// to quiet warnings

		_Mid1 = _First1;
		_Mid2 = _First2;
		for (; _Mid1 != _Last1 && _Mid2 != _Last2; )
			{	// convert a multibyte sequence
			unsigned char _Ch = _Etoa[(unsigned char)*_Mid1++];

			if (_Maxc < _Ch)
				return (_Mybase::error);	// code too large
			*_Mid2++ = (_Elem)_Ch;
			}

		return (_First1 == _Mid1 ? _Mybase::partial : _Mybase::ok);
		}

	virtual result do_out(_Statype&,
		const _Elem *_First1, const _Elem *_Last1, const _Elem *& _Mid1,
		_Byte *_First2, _Byte *_Last2, _Byte *& _Mid2) const
		{	// convert [_First1, _Last1) to bytes [_First2, _Last)
		unsigned long _Maxc = _Maxcode;	// to quiet warnings

		_Mid1 = _First1;
		_Mid2 = _First2;
		for (; _Mid1 != _Last1 && _Mid2 != _Last2; )
			{	// convert and put a wide char
			unsigned char _Ch = (unsigned char)*_Mid1++;

			if (_Maxc < _Ch)
				return (_Mybase::error);
			*_Mid2++ = (_Byte)_Atoe[_Ch];
			}

		return (_First1 == _Mid1 ? _Mybase::partial : _Mybase::ok);
		}

	virtual result do_unshift(_Statype&,
		_Byte *_First2, _Byte *, _Byte *& _Mid2) const
		{	// generate bytes to return to default shift state
		_Mid2 = _First2;
		return (_Mybase::ok);
		}

	virtual int do_length(const _Statype&, const _Byte *_First1,
		const _Byte *_Last1, size_t _Count) const _THROW0()
		{	// return min(_Count, converted length of bytes [_First1, _Last1))
		size_t _Wchars = _Last1 - _First1;

		return ((int)(_Count < _Wchars ? _Count : _Wchars));
		}

	virtual bool do_always_noconv() const _THROW0()
		{	// return true if conversions never change input
		return (false);
		}

	virtual int do_max_length() const _THROW0()
		{	// return maximum length required for a conversion
		return (1);
		}

	virtual int do_encoding() const _THROW0()
		{	// return length of code sequence (from codecvt)
		return (1);
		}
	};

		// map EBCDIC to ASCII
template<class _Elem,
	unsigned char _Maxcode>
	const unsigned char
		codecvt_ebcdic<_Elem, _Maxcode>::_Etoa[0x100] = {
	0x00, 0x01, 0x02, 0x03, 0x9c, 0x09, 0x86, 0x7f,	// 00
	0x97, 0x8d, 0x8e, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
	0x10, 0x11, 0x12, 0x13, 0x9d, 0x85, 0x08, 0x87,
	0x18, 0x19, 0x92, 0x8f, 0x1c, 0x1d, 0x1e, 0x1f,
	0x80, 0x81, 0x82, 0x83, 0x84, 0x0a, 0x17, 0x1b,	// 20
	0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x05, 0x06, 0x07,
	0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04,
	0x98, 0x99, 0x9a, 0x9b, 0x14, 0x15, 0x9e, 0x1a,
	0x20, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6,	// 40
	0xa7, 0xa8, 0xd5, 0x2e, 0x3c, 0x28, 0x2b, 0x7c,
	0x26, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
	0xb0, 0xb1, 0x21, 0x24, 0x2a, 0x29, 0x3b, 0x5e,
	0x2d, 0x2f, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,	// 60
	0xb8, 0xb9, 0xe5, 0x2c, 0x25, 0x5f, 0x3e, 0x3f,
	0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1,
	0xc2, 0x60, 0x3a, 0x23, 0x40, 0x27, 0x3d, 0x22,
	0xc3, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,	// 80
	0x68, 0x69, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9,
	0xca, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70,
	0x71, 0x72, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0,
	0xd1, 0x7e, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,	// a0
	0x79, 0x7a, 0xd2, 0xd3, 0xd4, 0x5b, 0xd6, 0xd7,
	0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0x5d, 0xe6, 0xe7,
	0x7b, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,	// c0
	0x48, 0x49, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed,
	0x7d, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50,
	0x51, 0x52, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3,
	0x5c, 0x9f, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,	// e0
	0x59, 0x5a, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9,
	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
	0x38, 0x39, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
	};

		// map ASCII to EBCDIC
template<class _Elem,
	unsigned char _Maxcode>
	const unsigned char
		codecvt_ebcdic<_Elem, _Maxcode>::_Atoe[0x100] = {
	0x00, 0x01, 0x02, 0x03, 0x37, 0x2d, 0x2e, 0x2f,	// 00
	0x16, 0x05, 0x25, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
	0x10, 0x11, 0x12, 0x13, 0x3c, 0x3d, 0x32, 0x26,
	0x18, 0x19, 0x3f, 0x27, 0x1c, 0x1d, 0x1e, 0x1f,
	0x40, 0x5a, 0x7f, 0x7b, 0x5b, 0x6c, 0x50, 0x7d,	// 20
	0x4d, 0x5d, 0x5c, 0x4e, 0x6b, 0x60, 0x4b, 0x61,
	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
	0xf8, 0xf9, 0x7a, 0x5e, 0x4c, 0x7e, 0x6e, 0x6f,
	0x7c, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,	// 40
	0xc8, 0xc9, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6,
	0xd7, 0xd8, 0xd9, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6,
	0xe7, 0xe8, 0xe9, 0xad, 0xe0, 0xbd, 0x5f, 0x6d,
	0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,	// 60
	0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
	0x97, 0x98, 0x99, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6,
	0xa7, 0xa8, 0xa9, 0xc0, 0x4f, 0xd0, 0xa1, 0x07,
	0x20, 0x21, 0x22, 0x23, 0x24, 0x15, 0x06, 0x17,	// 80
	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x09, 0x0a, 0x1b,
	0x30, 0x31, 0x1a, 0x33, 0x34, 0x35, 0x36, 0x08,
	0x38, 0x39, 0x3a, 0x3b, 0x04, 0x14, 0x3e, 0xe1,
	0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,	// a0
	0x49, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
	0x58, 0x59, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
	0x68, 0x69, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75,
	0x76, 0x77, 0x78, 0x80, 0x8a, 0x8b, 0x8c, 0x8d,	// c0
	0x8e, 0x8f, 0x90, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e,
	0x9f, 0xa0, 0xaa, 0xab, 0xac, 0x4a, 0xae, 0xaf,
	0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
	0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0x6a, 0xbe, 0xbf,	// eo
	0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xda, 0xdb,
	0xdc, 0xdd, 0xde, 0xdf, 0xea, 0xeb, 0xec, 0xed,
	0xee, 0xef, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
	};
		}	// namespace cvt
	}	// namespace stdext

 #ifdef _TEST_IT
  #define NCHARS	0x100
  #define MYWC_MAX	0xff
  #define MYFILE	"ebcdic"
  #define MYNAME	stdext::cvt::codecvt_ebcdic<Mywchar>

  #include <cvt/xtest>
 #endif /* _TEST_IT */

 #pragma warning(pop)
 #pragma pack(pop)

#endif /* RC_INVOKED */
#endif /* _CVT_EBCDIC_ */

/*
 * Copyright (c) 1992-2009 by P.J. Plauger.  ALL RIGHTS RESERVED. 
 * Consult your license regarding permissions and restrictions.
V5.20:0009 */
