mbsspn.cpp File Reference

#include <corecrt_internal.h>
#include <corecrt_internal_mbstring.h>
#include <locale.h>
#include <stddef.h>
#include <string.h>

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Functions
size_t __cdecl	_mbsspn_l (const unsigned char *string, const unsigned char *charset, _locale_t plocinfo)
	size_t (__cdecl _mbsspn)(const unsigned char *string

Variables
const unsigned char *	charset

Function Documentation

_mbsspn_l()

size_t __cdecl _mbsspn_l	(	const unsigned char *	string,
		const unsigned char *	charset,
		_locale_t	plocinfo
	)

Definition at line 51 of file mbsspn.cpp.

{
        unsigned char *p, *q;
        _LocaleUpdate _loc_update(plocinfo);
 
        if (_loc_update.GetLocaleT()->mbcinfo->ismbcodepage == 0)
#ifndef _RETURN_PTR
            return strspn((const char *)string, (const char *)charset);
#else  /* _RETURN_PTR */
        {
            size_t retval;
            retval = strspn((const char *)string, (const char *)charset);
            return (unsigned char *)(*(string + retval) ? string + retval : nullptr);
        }
#endif  /* _RETURN_PTR */
 
        /* validation section */
#ifndef _RETURN_PTR
        _VALIDATE_RETURN(string != nullptr, EINVAL, 0);
        _VALIDATE_RETURN(charset != nullptr, EINVAL, 0);
#else  /* _RETURN_PTR */
        _VALIDATE_RETURN(string != nullptr, EINVAL, nullptr);
        _VALIDATE_RETURN(charset != nullptr, EINVAL, nullptr);
#endif  /* _RETURN_PTR */
 
        /* loop through the string to be inspected */
        for (q = (unsigned char *)string; *q; q++) {
 
            /* loop through the charset */
            for (p = (unsigned char *)charset; *p; p++) {
                if ( _ismbblead_l(*p, _loc_update.GetLocaleT()) ) {
                    if (((*p == *q) && (p[1] == q[1])) || p[1] == '\0')
                        break;
                    p++;
                }
                else
                    if (*p == *q)
                        break;
            }
 
            if (*p == '\0')         /* end of charset? */
                break;              /* yes, no match on this char */
 
            if ( _ismbblead_l(*q, _loc_update.GetLocaleT()) )
                if (*++q == '\0')
                    break;
        }
 
#ifndef _RETURN_PTR
        return((size_t) (q - string));          /* index */
#else  /* _RETURN_PTR */
        return((*q) ? q : nullptr);        /* pointer */
#endif  /* _RETURN_PTR */
 
}

size_t()

size_t

(

__cdecl

_mbsspn

)

const

Variable Documentation

charset

const unsigned char* charset

Initial value:

{
 
        return _mbsspn_l(string, charset, nullptr)

Definition at line 122 of file mbsspn.cpp.

Referenced by _mbsspn_l().