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Diffstat (limited to 'private/crt32/convert/iswctype.c')
| -rw-r--r-- | private/crt32/convert/iswctype.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/private/crt32/convert/iswctype.c b/private/crt32/convert/iswctype.c new file mode 100644 index 000000000..c8f9629b0 --- /dev/null +++ b/private/crt32/convert/iswctype.c @@ -0,0 +1,128 @@ +/*** +*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); +} |