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
|
/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include <stdlib.h>
#include <errno.h>
#include <assert.h>
#include "libbb.h"
int safe_strtoi(char *arg, int* value)
{
int error;
long lvalue = *value;
error = safe_strtol(arg, &lvalue);
*value = (int) lvalue;
return error;
}
int safe_strtod(char *arg, double* value)
{
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
errno = 0;
*value = strtod(arg, &endptr);
if (errno != 0 || *endptr!='\0' || endptr==arg) {
return 1;
}
errno = errno_save;
return 0;
}
int safe_strtol(char *arg, long* value)
{
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
errno = 0;
*value = strtol(arg, &endptr, 0);
if (errno != 0 || *endptr!='\0' || endptr==arg) {
return 1;
}
errno = errno_save;
return 0;
}
int safe_strtoul(char *arg, unsigned long* value)
{
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
errno = 0;
*value = strtoul(arg, &endptr, 0);
if (errno != 0 || *endptr!='\0' || endptr==arg) {
return 1;
}
errno = errno_save;
return 0;
}
int safe_strtoll(char *arg, long long* value)
{
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
errno = 0;
*value = strtoll(arg, &endptr, 0);
if (errno != 0 || *endptr!='\0' || endptr==arg) {
return 1;
}
errno = errno_save;
return 0;
}
int safe_strtoull(char *arg, unsigned long long* value)
{
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
errno = 0;
*value = strtoull(arg, &endptr, 0);
if (errno != 0 || *endptr!='\0' || endptr==arg) {
return 1;
}
errno = errno_save;
return 0;
}
|
