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path: root/support/dktools/dk4maowdbl.c
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/*
	WARNING: This file was generated by dkct.
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4maowdbl.ctr
*/

/*
Copyright (C) 2015-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**	@file dk4maowdbl.c The dk4maowdbl module.
*/


#line 74 "dk4maowdbl.ctr"

#include "dk4conf.h"
#include "dk4types.h"

#if DK4_HAVE_LOCALE_H
#ifndef LOCALE_H_INCLUDED
#include <locale.h>
#define	LOCALE_H_INCLUDED 1
#endif
#endif

#include "dk4mem.h"
#include "dk4mao8dbl.h"
#include "dk4maowdbl.h"
#include "dk4str8.h"
#include "dk4strw.h"



/**	Locale to user for conversion.
*/
static const char	locale_kw[] = { "C" };



/**	Convert double value to string.
	@param	dptr	Destination buffer pointer.
	@param	szdptr	Size of destination buffer (number of wchar_t).
	@param	v	Value to convert.
	@param	exact	Flag: Write enough digits to allow exact restoration.
	@param	minimize	Minimize exact respresentation.
	@param	erp	Error report, may be NULL.
	@return	1 on success, 0 on error.
	
	Error codes:
	- DK4_E_INVALID_ARGUMENTS<br>
	  if dptr is NULL or szdptr is less than 2,
	- DK4_E_BUFFER_TOO_SMALL<br>
	  if the destination buffer is too small to store the string.
*/
static
void
dk4double_squeeze_wc_string(wchar_t *buf)
{
  wchar_t	*ptre	= NULL;
  wchar_t	*ptrdot	= NULL;
  wchar_t	*ptrcom	= NULL;
  wchar_t	*ptrcut	= NULL;
  wchar_t	*ptr;
  int		 useexp	= 1;
  

#line 125 "dk4maowdbl.ctr"
  if (NULL != buf) {
    ptr = buf;
    while(L'\0' != *ptr) {
      if ((L'e' == *ptr) || (L'E' == *ptr)) {
        if (NULL == ptre) { ptre = ptr; }
      } else {
        if (L'.' == *ptr) {
	  if (NULL == ptrdot) { ptrdot = ptr; }
	} else {
	  if (L',' == *ptr) {
	    if (NULL == ptrcom) { ptrcom = ptr; }
	  }
	}
      }
      ptr++;
    }
    if (NULL != ptre) {				

#line 142 "dk4maowdbl.ctr"
      *ptre = '\0';
      ptr = ptre;
      ptr++;
      if ((L'+' == *ptr) || (L'0' == *ptr)) {	

#line 146 "dk4maowdbl.ctr"
        useexp = 0;
	ptr++;
	while(L'\0' != *ptr) {
	  if (L'0' != *ptr) {			

#line 150 "dk4maowdbl.ctr"
	    useexp = 1;
	  }
	  ptr++;
	}
      }
    }
    if (NULL != ptrdot) {
      ptrdot++;
      if (L'\0' != *ptrdot) {			

#line 159 "dk4maowdbl.ctr"
        ptrdot++;
        while(L'\0' != *ptrdot) {		

#line 161 "dk4maowdbl.ctr"
          if (L'0' == *ptrdot) {
	    if (NULL == ptrcut) {
	      ptrcut = ptrdot;			

#line 164 "dk4maowdbl.ctr"
	    }
	  } else {
	    ptrcut = NULL;			

#line 167 "dk4maowdbl.ctr"
	  }
          ptrdot++;
        }
      }
    } else {
      if (NULL != ptrcom) {
        ptrcom++;
	if (L'\0' != *ptrcom) {
	  ptrcom++;
	  while (L'\0' != *ptrcom) {
	    if (L'0' == *ptrcom) {
	      if (NULL == ptrcut) {
	        ptrcut = ptrcom;
	      }
	    } else {
	      ptrcut = NULL;
	    }
	    ptrcom++;
	  }
	}
      }
    }
    if ((NULL != ptre) && (0 != useexp)) {
      *ptre = L'e';
    }
    if (NULL != ptrcut) {
      if ((NULL != ptre) && (0 != useexp)) {
        while (L'\0' != *ptre) {
	  *(ptrcut++) = *(ptre++);
	}
      }
      *ptrcut = L'\0';
    }
  }
  

#line 202 "dk4maowdbl.ctr"
}



static
int
dk4ma_internal_write_wc_double(
  wchar_t *dptr, size_t szdptr, double v, int exact, int minimize, dk4_er_t *erp
)
{
#if DK4_HAVE__SNWPRINTF_S
  /* +++ _snwprintf_s */
  wchar_t	 buf[64];
  int		 back = 0;
  int		 res  = 0;
  if (NULL != dptr) { *dptr = L'\0'; }
  if ((NULL != dptr) && (1 < szdptr)) {
    if (0 != exact) {
      res = _snwprintf_s(
        buf, DK4_SIZEOF(buf,dkChar), _TRUNCATE, L"%.*e", (int)DK4_DBL_DIGITS, v
      );
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
	if (0 != minimize) {
	  dk4double_squeeze_wc_string(buf);
	}
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    } else {
      res = _snwprintf_s(
        buf, DK4_SIZEOF(buf,dkChar), _TRUNCATE, L"%g", v
      );
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
  /* --- _snwprintf_s */
#else
#if DK4_HAVE__SNWPRINTF
  /* +++ _snwprintf */
  wchar_t	 buf[64];
  int		 back = 0;
  int		 res  = 0;
  if (NULL != dptr) { *dptr = L'\0'; }
  if ((NULL != dptr) && (1 < szdptr)) {
    if (0 != exact) {
      0 = _snwprintf(
        buf, DK4_SIZEOF(buf,dkChar), L"%.*e", (int)DK4_DBL_DIGITS, v
      );
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
	if (0 != minimize) {
	  dk4double_squeeze_wc_string(buf);
	}
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    } else {
      0 = _snwprintf(
        buf, DK4_SIZEOF(buf,dkChar), L"%g", v
      );
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
  /* --- _snwprintf */
#else
#if DK4_HAVE_SNWPRINTF
  wchar_t	 buf[64];
  int		 back = 0;
  int		 res  = 0;
  if (NULL != dptr) { *dptr = L'\0'; }
  if ((NULL != dptr) && (1 < szdptr)) {
    if (0 != exact) {
      res = snwprintf(buf,DK4_SIZEOF(buf,dkChar),L"%.*e",(int)DK4_DBL_DIGITS,v);
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
	if (0 != minimize) {
	  dk4double_squeeze_wc_string(buf);
	}
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    } else {
      res = snwprintf(buf, DK4_SIZEOF(buf,dkChar), L"%g", v);
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
#else
#if DK4_HAVE_SWPRINTF
  /* +++ swprintf */
  wchar_t	 buf[64];
  int		 back = 0;
  int		 res  = 0;
  if (NULL != dptr) { *dptr = L'\0'; }
  if ((NULL != dptr) && (1 < szdptr)) {
    if (0 != exact) {
      res = swprintf(buf,DK4_SIZEOF(buf,dkChar),L"%.*e",(int)DK4_DBL_DIGITS,v);
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
	if (0 != minimize) {
	  dk4double_squeeze_wc_string(buf);
	}
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    } else {
      res = swprintf(buf, DK4_SIZEOF(buf,dkChar), L"%g", v);
      if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) {
        buf[res] = L'\0';
        back = dk4strw_cpy_s(dptr, szdptr, buf, erp);
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
  /* --- swprintf */
#else
  char		 buf[64];
  char		*p1;
  wchar_t	*p2;
  int		 back	= 0;
  if ((NULL != dptr) && (1 < szdptr)) {
    if (0 != dk4ma_write_c8_double(buf,sizeof(buf),v,exact,minimize,erp)) {
      if (dk4str8_len(buf) < szdptr) {
        p2 = dptr; p1 = buf;
	while ('\0' != *p1) {
	  *(p2++) = (wchar_t)(*(p1++));
	}
	*p2 = L'\0';
	back = 1;
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
      }
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
#endif
#endif
#endif
#endif
}



int
dk4ma_write_wc_double(
  wchar_t *dptr, size_t szdptr, double v, int exact, int minimize, dk4_er_t *erp
)
{

#if	(DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC)
  char		*oldloc	= NULL;
#endif
  int		 back	= 0;

#if	(DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC)
  oldloc = setlocale(LC_NUMERIC, NULL);
  (void)setlocale(LC_NUMERIC, locale_kw);
#endif
  back = dk4ma_internal_write_wc_double(dptr, szdptr, v, exact, minimize, erp);
#if	(DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC)
  (void)setlocale(LC_NUMERIC, oldloc);
#endif
  return back;
}