blob: 40cdb662e6509ea4b1a28ebcb9192d1e39e8bb76 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/***
*mbsspn.c - Search for init substring of chars from control string (MBCS).
*
* Copyright (c) 1985-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Search for init substring of chars from control string (MBCS).
*
*Revision History:
* 11-19-92 KRS Ported from 16-bit sources.
*
*******************************************************************************/
#ifdef _MBCS
#include <cruntime.h>
#include <mbdata.h>
#include <mbctype.h>
#include <mbstring.h>
#include <stddef.h>
/***
#ifndef _RETURN_PTR
* _mbsspn - Find first string char not in charset (MBCS)
#else
* _mbsspnp - Find first string char not in charset, return pointer (MBCS)
#endif
*
*Purpose:
* Returns maximum leading segment of string consisting solely
* of characters from charset. Handles MBCS characters correctly.
*
*Entry:
* unsigned char *string = string to search in
* unsigned char *charset = set of characters to scan over
*
*Exit:
*
#ifndef _RETURN_PTR
* Returns index of first char in string not in control.
* Returns 0, if string begins with a character not in charset.
#else
* Returns pointer to first character not in charset.
* Returns NULL if string consists entirely of characters from charset.
#endif
*
*Exceptions:
*
*******************************************************************************/
#ifndef _RETURN_PTR
size_t _CRTAPI1 _mbsspn( string, charset )
const unsigned char *string;
const unsigned char *charset;
#else
unsigned char * _CRTAPI1 _mbsspnp( string, charset )
const unsigned char *string;
const unsigned char *charset;
#endif
{
unsigned char *p, *q;
/* loop through the string to be inspected */
for (q = (char *)string; *q; q++) {
/* loop through the charset */
for (p = (char *)charset; *p; p++) {
if (_ISLEADBYTE(*p)) {
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 (_ISLEADBYTE(*q))
if (*++q == '\0')
break;
}
#ifndef _RETURN_PTR
return((size_t) (q - string)); /* index */
#else
return((*q) ? q : NULL); /* pointer */
#endif
}
#endif /* _MBCS */
|
