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
|
#include "../git-compat-util.h"
/*
* The size parameter specifies the available space, i.e. includes
* the trailing NUL byte; but Windows's vsnprintf expects the
* number of characters to write without the trailing NUL.
*/
#ifndef SNPRINTF_SIZE_CORR
#define SNPRINTF_SIZE_CORR 0
#endif
#undef vsnprintf
int git_vsnprintf(char *str, size_t maxsize, const char *format, va_list ap)
{
char *s;
int ret = -1;
if (maxsize > 0) {
ret = vsnprintf(str, maxsize-SNPRINTF_SIZE_CORR, format, ap);
if (ret == maxsize-1)
ret = -1;
/* Windows does not NUL-terminate if result fills buffer */
str[maxsize-1] = 0;
}
if (ret != -1)
return ret;
s = NULL;
if (maxsize < 128)
maxsize = 128;
while (ret == -1) {
maxsize *= 4;
str = realloc(s, maxsize);
if (! str)
break;
s = str;
ret = vsnprintf(str, maxsize-SNPRINTF_SIZE_CORR, format, ap);
if (ret == maxsize-1)
ret = -1;
}
free(s);
return ret;
}
int git_snprintf(char *str, size_t maxsize, const char *format, ...)
{
va_list ap;
int ret;
va_start(ap, format);
ret = git_vsnprintf(str, maxsize, format, ap);
va_end(ap);
return ret;
}
|
