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/***
*iswctype.c - support isw* wctype functions/macros for wide characters
*
* Copyright (c) 1991-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Defines iswctype - support isw* wctype functions/macros for
* wide characters (esp. > 255).
*
*Revision History:
* 10-11-91 ETC Created.
* 12-08-91 ETC Updated api; check type masks.
* 04-06-92 KRS Change to match ISO proposal. Fix logic error.
* 08-07-92 GJF _CALLTYPE4 (bogus usage) -> _CRTAPI1 (legit).
* 08-20-92 KRS Activated NLS support.
* 08-22-92 SRW Allow INTL definition to be conditional for building ntcrt.lib
* 09-02-92 SRW Get _INTL definition via ..\crt32.def
* 09-03-92 GJF Merged last 4 changes.
* 01-15-93 CFW Put #ifdef _INTL around wint_t d def to avoid warnings
* 02-12-93 CFW Return d not c, remove CTRL-Z.
* 02-17-93 CFW Include locale.h.
* 05-05-93 CFW Change name from is_wctype to iswctype as per ISO.
* 06-02-93 SRW ignore _INTL if _NTSUBSET_ defined.
* 06-26-93 CFW Support is_wctype forever.
*
*******************************************************************************/
#include <cruntime.h>
#include <ctype.h>
#include <stdio.h>
#include <locale.h>
#include <setlocal.h>
/*
* Use GetStringTypeW() API so check that character type masks agree between
* ctype.h and winnls.h
*/
#if defined(_INTL) && !defined(_NTSUBSET_)
#if _UPPER != C1_UPPER || \
_LOWER != C1_LOWER || \
_DIGIT != C1_DIGIT || \
_SPACE != C1_SPACE || \
_PUNCT != C1_PUNCT || \
_CONTROL != C1_CNTRL
#error Character type masks do not agree in ctype and winnls
#endif
#endif
/***
*iswctype - support isw* wctype functions/macros.
*
*Purpose:
* This function is called by the isw* wctype functions/macros
* (e.g. iswalpha()) when their argument is a wide character > 255.
* It is also a standard ITSCJ (proposed) ISO routine and can be called
* by the user, even for characters < 256.
* Returns true or false depending on whether the argument satisfies
* the character class property encoded by the mask. Returns 0 if the
* argument is WEOF.
*
* NOTE: The isw* functions are neither locale nor codepage dependent.
*
*Entry:
* wchar_t c - the wide character whose type is to be tested
* wchar_t mask - the mask used by the isw* functions/macros
* corresponding to each character class property
*
*Exit:
* Returns non-zero if c is of the character class.
* Returns 0 if c is not of the character class.
*
*Exceptions:
* Returns 0 on any error.
*
*******************************************************************************/
int _CRTAPI1 iswctype (
wchar_t c,
wctype_t mask
)
{
wint_t d;
if (c == WEOF)
return 0;
if (c < 256) /* consider: necessary? */
d = _pwctype[c];
else
{
#if defined(_INTL) && !defined(_NTSUBSET_)
if (_lc_handle[LC_CTYPE] == _CLOCALEHANDLE
|| GetStringTypeW(CT_CTYPE1, &c, 1, &d) == 0)
#endif /* _INTL */
return 0;
}
return (int)(d & mask);
}
/***
*is_wctype - support obsolete name
*
*Purpose:
* Name changed from is_wctype to iswctype. is_wctype must be supported.
*
*Entry:
* wchar_t c - the wide character whose type is to be tested
* wchar_t mask - the mask used by the isw* functions/macros
* corresponding to each character class property
*
*Exit:
* Returns non-zero if c is of the character class.
* Returns 0 if c is not of the character class.
*
*Exceptions:
* Returns 0 on any error.
*
*******************************************************************************/
int _CRTAPI1 is_wctype (
wchar_t c,
wctype_t mask
)
{
return iswctype(c, mask);
}
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