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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2016-xxxx
SPDX-License-Identifier:	BSD-3-Clause


%%	header

/**	@file	dk4rec25.h	Conversion from dkChar to other character
	widths.
*/

#ifdef __cplusplus
extern "C" {
#endif

/**	Recode a dkChar string to any encoding.
	@param	dstb	Destination buffer.
	@param	szdstb	Size of dstb (number of elements).
			The element size depends on the destination encoding.
	@param	de	Destination encoding.
	@param	src	Source string.
	@param	se	Source encoding, only used if dkChar is 8 bits wide.
	@param	erp	Error report, may be NULL.

	Error codes:
	- DK4_E_INVALID_ARGUMENTS<br>
	  if src or dstb is NULL or szdstb is 0,
	- DK4_E_BUFFER_TOO_SMALL<br>
	  if dstb is too small,
	- DK4_E_SYNTAX<br>
	  with the number of successfully recoded characters in nelem if a
	  non-recodable character was found.
*/
int
dk4recode_dk_to_any(
  void *dstb, size_t szdstb, int de, const dkChar *src, int se, dk4_er_t *erp
);

#ifdef __cplusplus
}
#endif


%%	module

#include "dk4conf.h"

#ifndef	DK4USE_H_INCLUDED
#include "dk4use.h"
#endif

#include "dk4types.h"
#include "dk4enc.h"
#include "dk4rec.h"
#include "dk4str8.h"
#include "dk4strw.h"
#include "dk4unused.h"

#if	DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif


$!trace-include


#if DK4_USE_PRAGMA_WARNING_DISABLE
#pragma warning( push )
#pragma warning( disable: 4100 )
#endif

int
dk4recode_dk_to_any(
  void		*dstb,
  size_t	 szdstb,
  int		 de,
  const dkChar	*src,
#if DK4_CHAR_SIZE > 1
  int		 DK4_ARG_UNUSED(se),
#else
  int		 se,
#endif
  dk4_er_t	*erp
)
{
  int		 back	= 0;
#if DK4_CHAR_SIZE > 1
  DK4_UNUSED_ARG(se)
#endif
#if	DK4_USE_ASSERT
  assert(NULL != dstb);
  assert(0 < szdstb);
  assert(NULL != src);
#endif
  if ((NULL != dstb) && (NULL != src) && (0 < szdstb)) {
    switch (de) {
      case DK4_ENCODING_PLAIN : {
#if DK4_CHAR_SIZE > 1
#if DK4_CHAR_SIZE > 2
	back = dk4recode_c32_to_ascii((char *)dstb, szdstb, src, erp);
#else
	back = dk4recode_utf16_to_ascii((char *)dstb, szdstb, src, erp);
#endif
#else
	switch (se) {
	  case DK4_ENCODING_UTF8 : {
	    back = dk4recode_utf8_to_ascii((char *)dstb, szdstb, src, erp);
	  } break;
	  case DK4_ENCODING_WIN1252 : {
	    back = dk4recode_ansi_to_ascii((char *)dstb, szdstb, src, erp);
	  } break;
	  default : {
	    back = dk4str8_cpy_s((char *)dstb, szdstb, src, erp);
	  } break;
	}
#endif
      } break;
      case DK4_ENCODING_WIN1252 : {
#if DK4_CHAR_SIZE > 1
#if DK4_CHAR_SIZE > 2
	back = dk4recode_c32_to_ansi((char *)dstb, szdstb, src, erp);
#else
	back = dk4recode_utf16_to_ansi((char *)dstb, szdstb, src, erp);
#endif
#else
	switch (se) {
	  case DK4_ENCODING_UTF8 : {
	    back = dk4recode_utf8_to_ansi((char *)dstb, szdstb, src, erp);
	  } break;
	  case DK4_ENCODING_WIN1252 : {
	    back = dk4str8_cpy_s((char *)dstb, szdstb, src, erp);
	  } break;
	  default : {
	    back = dk4recode_ascii_to_ansi((char *)dstb, szdstb, src, erp);
	  } break;
	}
#endif
      } break;
      case DK4_ENCODING_UTF8 : {
#if DK4_CHAR_SIZE > 1
#if DK4_CHAR_SIZE > 2
	back = dk4recode_c32_to_utf8((char *)dstb, szdstb, src, erp);
#else
	back = dk4recode_utf16_to_utf8((char *)dstb, szdstb, src, erp);
#endif
#else
	switch (se) {
	  case DK4_ENCODING_UTF8 : {
	    back = dk4str8_cpy_s((char *)dstb, szdstb, src, erp);
	  } break;
	  case DK4_ENCODING_WIN1252 : {
	    back= dk4recode_ansi_to_utf8((char *)dstb, szdstb, src, erp);
	  } break;
	  default : {
	    back = dk4recode_ascii_to_utf8((char *)dstb, szdstb, src, erp);
	  } break;
	}
#endif
      } break;
      case DK4_ENCODING_UTF16 : {
#if DK4_CHAR_SIZE > 1
#if DK4_CHAR_SIZE > 2
	back = dk4recode_c32_to_utf16((dk4_c16_t *)dstb, szdstb, src, erp);
#else
	back = dk4strw_cpy_s((wchar_t *)dstb, szdstb, src, erp);
#endif
#else
	switch (se) {
	  case DK4_ENCODING_UTF8 : {
	    back = dk4recode_utf8_to_utf16((dk4_c16_t *)dstb, szdstb, src, erp);
	  } break;
	  case DK4_ENCODING_WIN1252 : {
	    back = dk4recode_ansi_to_utf16((dk4_c16_t *)dstb, szdstb, src, erp);
	  } break;
	  default : {
	    back = dk4recode_ascii_to_utf16((dk4_c16_t *)dstb,szdstb,src,erp);
	  } break;
	}
#endif
      } break;
      case DK4_ENCODING_32 : {
#if DK4_CHAR_SIZE > 1
#if DK4_CHAR_SIZE > 2
	back = dk4strw_cpy_s((wchar_t *)dstb, szdstb, src, erp);
#else
	back = dk4recode_utf16_to_c32((dk4_c32_t *)dstb, szdstb, src, erp);
#endif
#else
	switch (se) {
	  case DK4_ENCODING_UTF8 : {
	    back = dk4recode_utf8_to_c32((dk4_c32_t *)dstb, szdstb, src, erp);
	  } break;
	  case DK4_ENCODING_WIN1252 : {
	    back = dk4recode_ansi_to_c32((dk4_c32_t *)dstb, szdstb, src, erp);
	  } break;
	  default : {
	    back = dk4recode_ascii_to_c32((dk4_c32_t *)dstb, szdstb, src, erp);
	  } break;
	}
#endif
      } break;
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}

#if _WIN32 && defined(_MSC_VER) && (_MSC_VER >= 1700)
#pragma warning( pop )
#endif