_strspnp, _wcsspnp, _mbsspnp, _mbsspnp_l

發行項
04/28/2015

Returns a pointer to the first character in a given string that is not in another given string.

Important

_mbsspnp and _mbsspnp_l cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported with /ZW.

char *_strspnp(
   const char *str,
   const char *charset
);
wchar_t *_wcsspnp(
   const unsigned wchar_t *str,
   const unsigned wchar_t *charset
);
unsigned char *_mbsspnp(
   const unsigned char *str,
   const unsigned char *charset
);
unsigned char *_mbsspnp_l(
   const unsigned char *str,
   const unsigned char *charset,
   _locale_t locale
);

Parameters

str
Null-terminated string to search.
charset
Null-terminated character set.
locale
Locale to use.

Return Value

_strspnp, _wcsspnp, and _mbsspnp return a pointer to the first character in str that does not belong to the set of characters in charset*.* Each of these functions returns NULL if str consists entirely of characters from charset*.* For each of these routines, no return value is reserved to indicate an error.

Remarks

The _mbsspnp function returns a pointer to the multibyte character that is the first character in str that does not belong to the set of characters in charset. _mbsspnp recognizes multibyte-character sequences according to the multibyte code page currently in use. The search does not include terminating null characters.

If either str or charset is a null pointer, this function invokes the invalid parameter handler, as described in Parameter Validation. If execution is allowed to continue, the function returns NULL and sets errno to EINVAL.

Generic-Text Routine Mappings

Tchar.h routine	_UNICODE and _MBCS not defined	_MBCS defined	_UNICODE defined
_tcsspnp	_strspnp	_mbsspnp	_wcsspnp

_strspnp and _wcsspnp are single-byte character and wide-character versions of _mbsspnp. _strspnp and _wcsspnp behave identically to _mbsspnp otherwise; they are provided only for this mapping and should not be used for any other reason. For more information, see Using Generic-Text Mappings and Generic-Text Mappings.

_mbsspnp_lis identical except that it uses the locale parameter passed in instead. For more information, see Locale.

Requirements

Routine	Required header
_mbsspnp	<mbstring.h>
_strspnp	<tchar.h>
_wcsspnp	<tchar.h>

For more compatibility information, see Compatibility.

Example

// crt_mbsspnp.c
#include <mbstring.h>
#include <stdio.h>

int main( void ) {
   const unsigned char string1[] = "cabbage";
   const unsigned char string2[] = "c";
   unsigned char *ptr = 0;
   ptr = _mbsspnp( string1, string2 );
   printf( "%s\n", ptr);
}

Output

abbage

.NET Framework Equivalent

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

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