You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
165 lines
4.1 KiB
165 lines
4.1 KiB
/***
|
|
*mbscspn.c - Find first string char in charset (MBCS)
|
|
*
|
|
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* Find first string char in charset (MBCS)
|
|
*
|
|
*Revision History:
|
|
* 11-19-92 KRS Ported from 16-bit sources.
|
|
* 10-05-93 GJF Replaced _CRTAPI1 with __cdecl.
|
|
* 04-15-93 CFW Add _MB_CP_LOCK.
|
|
* 05-09-94 CFW Optimize for SBCS.
|
|
* 05-19-94 CFW Enable non-Win32.
|
|
* 09-14-94 SKS Clean up preprocessor commands inside comments
|
|
* 09-11-97 GJF Replaced __mbcodepage == 0 with _ISNOTMBCP.
|
|
* 04-21-98 GJF Revised multithread support based on threadmbcinfo
|
|
* structs
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#ifdef _MBCS
|
|
|
|
#include <mtdll.h>
|
|
#include <cruntime.h>
|
|
#include <string.h>
|
|
#include <mbdata.h>
|
|
#include <mbctype.h>
|
|
#include <mbstring.h>
|
|
#include <stddef.h>
|
|
|
|
|
|
/***
|
|
*ifndef _RETURN_PTR
|
|
* _mbscspn - Find first string char in charset (MBCS)
|
|
*else
|
|
* _mbspbrk - Find first string char in charset, pointer return (MBCS)
|
|
*endif
|
|
*
|
|
*Purpose:
|
|
* Returns maximum leading segment of string
|
|
* which consists solely of characters NOT from charset.
|
|
* Handles MBCS chars correctly.
|
|
*
|
|
*Entry:
|
|
* char *string = string to search in
|
|
* char *charset = set of characters to scan over
|
|
*
|
|
*Exit:
|
|
*
|
|
*ifndef _RETURN_PTR
|
|
* Returns the index of the first char in string
|
|
* that is in the set of characters specified by control.
|
|
*
|
|
* Returns 0, if string begins with a character in charset.
|
|
*else
|
|
* Returns pointer to first character in charset.
|
|
*
|
|
* Returns NULL if string consists entirely of characters
|
|
* not from charset.
|
|
*endif
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#ifndef _RETURN_PTR
|
|
|
|
size_t __cdecl _mbscspn(
|
|
const unsigned char *string,
|
|
const unsigned char *charset
|
|
)
|
|
#else
|
|
|
|
unsigned char * __cdecl _mbspbrk(
|
|
const unsigned char *string,
|
|
const unsigned char *charset
|
|
)
|
|
#endif
|
|
|
|
{
|
|
#ifdef _MT
|
|
pthreadmbcinfo ptmbci = _getptd()->ptmbcinfo;
|
|
|
|
if ( ptmbci != __ptmbcinfo )
|
|
ptmbci = __updatetmbcinfo();
|
|
|
|
#ifndef _RETURN_PTR
|
|
return __mbscspn_mt(ptmbci, string, charset);
|
|
#else
|
|
return __mbspbrk_mt(ptmbci, string, charset);
|
|
#endif
|
|
}
|
|
|
|
#ifndef _RETURN_PTR
|
|
|
|
size_t __cdecl __mbscspn_mt(
|
|
pthreadmbcinfo ptmbci,
|
|
const unsigned char *string,
|
|
const unsigned char *charset
|
|
)
|
|
#else
|
|
|
|
unsigned char * __cdecl __mbspbrk_mt(
|
|
pthreadmbcinfo ptmbci,
|
|
const unsigned char *string,
|
|
const unsigned char *charset
|
|
)
|
|
#endif
|
|
|
|
{
|
|
#endif
|
|
unsigned char *p, *q;
|
|
#ifdef _MT
|
|
if ( _ISNOTMBCP_MT(ptmbci) )
|
|
#else
|
|
if ( _ISNOTMBCP )
|
|
#endif
|
|
#ifndef _RETURN_PTR
|
|
return strcspn(string, charset);
|
|
#else
|
|
return strpbrk(string, charset);
|
|
#endif
|
|
|
|
/* loop through the string to be inspected */
|
|
for (q = (char *)string; *q ; q++) {
|
|
|
|
/* loop through the charset */
|
|
for (p = (char *)charset; *p ; p++) {
|
|
|
|
#ifdef _MT
|
|
if ( __ismbblead_mt(ptmbci, *p) ) {
|
|
#else
|
|
if ( _ismbblead(*p) ) {
|
|
#endif
|
|
if (((*p == *q) && (p[1] == q[1])) || p[1] == '\0')
|
|
break;
|
|
p++;
|
|
}
|
|
else
|
|
if (*p == *q)
|
|
break;
|
|
}
|
|
|
|
if (*p != '\0') /* end of charset? */
|
|
break; /* no, match on this char */
|
|
|
|
#ifdef _MT
|
|
if ( __ismbblead_mt(ptmbci, *q) )
|
|
#else
|
|
if ( _ismbblead(*q) )
|
|
#endif
|
|
if (*++q == '\0')
|
|
break;
|
|
}
|
|
|
|
#ifndef _RETURN_PTR
|
|
return((size_t) (q - string)); /* index */
|
|
#else
|
|
return((*q) ? q : NULL); /* pointer */
|
|
#endif
|
|
|
|
}
|
|
|
|
#endif /* _MBCS */
|