libcutils

libcutils/include/cutils/extensions.h
extensions.h
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1#ifndef CUTILS_EXTENSIONS_H
2#define CUTILS_EXTENSIONS_H
3
4#include <cutils/hedley.h>
5#include <errno.h>
6#include <stdlib.h>
7#include <cutils/backport.h>
8#include <string.h>
9#include <ctype.h>
10#include <stdarg.h>
11#include <stdio.h>
12#include <cutils/common.h>
13
14int cutil_strcasecmp(const char* s1, const char* s2);
15int cutil_strncasecmp(const char* s1, const char* s2, size_t n);
16
17size_t cutil_strnlen(const char* s, size_t maxlen);
18
19#define cutil_strdup(s) cutil_strndup(s, strlen((const char*)s))
20char* cutil_strndup(const char* s, size_t n);
21
22bool cutil_memmem(const void* haystack, size_t haystacklen, const void* needle, size_t needlelen, size_t* pos);
23
24#if __STDC_VERSION__ >= 199901L
25int cutil_asprintf(char** strp, const char* format, ...);
26#endif
27
28HEDLEY_INLINE
29static void* cutil_reallocarray(void *ptr, size_t nmemb, size_t size)
30{
31 size_t new_size = nmemb * size;
32
33 if(nmemb != 0 && new_size / nmemb != size)
34 {
35 errno = ENOMEM;
36 return NULL;
37 } else {
38 return realloc(ptr, new_size);
39 }
40}
41
42HEDLEY_INLINE
43static void* cutil_reallocarray_inc(void *ptr, size_t nmemb, size_t size, size_t add)
44{
45 if(SIZE_MAX - add < size)
46 {
47 errno = ENOMEM;
48 return NULL;
49 } else {
50 return cutil_reallocarray(ptr, nmemb+add, size);
51 }
52}
53
54
55
56#endif /* CUTILS_EXTENSIONS_H */
57