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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2006, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
#include "setup.h"
#include <string.h>
#include <ctype.h>
#ifdef __QNX__
#include <strings.h>
#endif
#include "strequal.h"
#if defined(HAVE_STRCASECMP) && defined(__STRICT_ANSI__)
/* this is for "-ansi -Wall -pedantic" to stop complaining! */
extern int (strcasecmp)(const char *s1, const char *s2);
extern int (strncasecmp)(const char *s1, const char *s2, size_t n);
#endif
int curl_strequal(const char *first, const char *second)
{
#if defined(HAVE_STRCASECMP)
return !(strcasecmp)(first, second);
#elif defined(HAVE_STRCMPI)
return !(strcmpi)(first, second);
#elif defined(HAVE_STRICMP)
return !(stricmp)(first, second);
#else
while (*first && *second) {
if (toupper(*first) != toupper(*second)) {
break;
}
first++;
second++;
}
return toupper(*first) == toupper(*second);
#endif
}
int curl_strnequal(const char *first, const char *second, size_t max)
{
#if defined(HAVE_STRCASECMP)
return !strncasecmp(first, second, max);
#elif defined(HAVE_STRCMPI)
return !strncmpi(first, second, max);
#elif defined(HAVE_STRICMP)
return !strnicmp(first, second, max);
#else
while (*first && *second && max) {
if (toupper(*first) != toupper(*second)) {
break;
}
max--;
first++;
second++;
}
if(0 == max)
return 1; /* they are equal this far */
return toupper(*first) == toupper(*second);
#endif
}
/*
* Curl_strcasestr() finds the first occurrence of the substring needle in the
* string haystack. The terminating `\0' characters are not compared. The
* matching is done CASE INSENSITIVE, which thus is the difference between
* this and strstr().
*/
char *Curl_strcasestr(const char *haystack, const char *needle)
{
size_t nlen = strlen(needle);
size_t hlen = strlen(haystack);
while(hlen-- >= nlen) {
if(curl_strnequal(haystack, needle, nlen))
return (char *)haystack;
haystack++;
}
return NULL;
}
#ifndef HAVE_STRLCAT
/*
* The strlcat() function appends the NUL-terminated string src to the end
* of dst. It will append at most size - strlen(dst) - 1 bytes, NUL-termi-
* nating the result.
*
* The strlcpy() and strlcat() functions return the total length of the
* string they tried to create. For strlcpy() that means the length of src.
* For strlcat() that means the initial length of dst plus the length of
* src. While this may seem somewhat confusing it was done to make trunca-
* tion detection simple.
*
*
*/
size_t Curl_strlcat(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
#endif
|
