ReactOS 0.4.15-dev-5893-g1bb4167
mbsncmp.c
Go to the documentation of this file.
1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS system libraries
4 * FILE: lib/sdk/crt/mbstring/mbsncmp.c
5 * PURPOSE: Compares two strings to a maximum of n bytes or characters
6 * PROGRAMER: Ariadne
7 * UPDATE HISTORY:
8 * 12/04/99: Created
9 */
10
11#include <mbstring.h>
12
13/*
14 * @implemented
15 */
16int _mbsncmp(const unsigned char *str1, const unsigned char *str2, size_t n)
17{
18 unsigned char *s1 = (unsigned char *)str1;
19 unsigned char *s2 = (unsigned char *)str2;
20
21 unsigned short *short_s1, *short_s2;
22
23 int l1, l2;
24
25 if (n == 0)
26 return 0;
27 do {
28
29 if (*s1 == 0)
30 break;
31
32 l1 = _ismbblead(*s1);
33 l2 = _ismbblead(*s2);
34 if ( !l1 && !l2 ) {
35
36 if (*s1 != *s2)
37 return *s1 - *s2;
38 else {
39 s1 += 1;
40 s2 += 1;
41 n--;
42 }
43 }
44 else if ( l1 && l2 ){
45 short_s1 = (unsigned short *)s1;
46 short_s2 = (unsigned short *)s2;
47 if ( *short_s1 != *short_s2 )
48 return *short_s1 - *short_s2;
49 else {
50 s1 += 2;
51 s2 += 2;
52 n--;
53
54 }
55 }
56 else
57 return *s1 - *s2;
58 } while (n > 0);
59 return 0;
60}
61
62/*
63 * @implemented
64 */
65int _mbsnbcmp(const unsigned char *str1, const unsigned char *str2, size_t n)
66{
67 unsigned char *s1 = (unsigned char *)str1;
68 unsigned char *s2 = (unsigned char *)str2;
69
70 unsigned short *short_s1, *short_s2;
71
72 int l1, l2;
73
74 if (n == 0)
75 return 0;
76 do {
77
78 if (*s1 == 0)
79 break;
80
81 l1 = _ismbblead(*s1);
82 l2 = _ismbblead(*s2);
83 if ( !l1 && !l2 ) {
84
85 if (*s1 != *s2)
86 return *s1 - *s2;
87 else {
88 s1 += 1;
89 s2 += 1;
90 n--;
91 }
92 }
93 else if ( l1 && l2 ){
94 short_s1 = (unsigned short *)s1;
95 short_s2 = (unsigned short *)s2;
96 if ( *short_s1 != *short_s2 )
97 return *short_s1 - *short_s2;
98 else {
99 s1 += 2;
100 s2 += 2;
101 n-=2;
102
103 }
104 }
105 else
106 return *s1 - *s2;
107 } while (n > 0);
108 return 0;
109}
GLdouble n
Definition: glext.h:7729
int _mbsncmp(const unsigned char *str1, const unsigned char *str2, size_t n)
Definition: mbsncmp.c:16
int _mbsnbcmp(const unsigned char *str1, const unsigned char *str2, size_t n)
Definition: mbsncmp.c:65
struct S1 s1
struct S2 s2
int __cdecl _ismbblead(unsigned int)
Definition: ismblead.c:20