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
144
145
146
147
148
149
150
151
152
153
154
155
156
|
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
# ifndef strchr
# define strchr index
# endif
#endif
#define NDEBUG
#include <assert.h>
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#if HAVE_LIMITS_H
#include <limits.h>
#endif
#ifndef ULONG_MAX
#define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
#endif
#ifndef LONG_MAX
#define LONG_MAX ((long int) (ULONG_MAX >> 1))
#endif
#include "xstrtol.h"
#define BKM_SCALE(x, scale_factor, error_return) \
do \
{ \
if ((x) > (double) __ZLONG_MAX / (scale_factor)) \
return (error_return); \
(x) *= (scale_factor); \
} \
while (0)
__unsigned long int __strtol ();
/* FIXME: comment. */
strtol_error
__xstrtol (s, ptr, base, val, valid_suffixes)
const char *s;
char **ptr;
int base;
__unsigned long int *val;
const char *valid_suffixes;
{
char *t_ptr;
char **p;
__unsigned long int tmp;
assert (0 <= base && base <= 36);
p = (ptr ? ptr : &t_ptr);
errno = 0;
tmp = __strtol (s, p, base);
if (errno != 0)
return LONGINT_OVERFLOW;
if (*p == s)
return LONGINT_INVALID;
if (!valid_suffixes)
{
if (**p == '\0')
{
*val = tmp;
return LONGINT_OK;
}
else
return LONGINT_INVALID_SUFFIX_CHAR;
}
if (**p != '\0' && strchr (valid_suffixes, **p))
{
switch (**p)
{
case 'b':
BKM_SCALE (tmp, 512, LONGINT_OVERFLOW);
++(*p);
break;
case 'c':
++(*p);
break;
case 'B':
case 'k':
BKM_SCALE (tmp, 1024, LONGINT_OVERFLOW);
++(*p);
break;
case 'm':
BKM_SCALE (tmp, 1024 * 1024, LONGINT_OVERFLOW);
++(*p);
break;
case 'w':
BKM_SCALE (tmp, 2, LONGINT_OVERFLOW);
++(*p);
break;
default:
return LONGINT_INVALID_SUFFIX_CHAR;
break;
}
}
*val = tmp;
return LONGINT_OK;
}
#ifdef TESTING_XSTRTO
#include <stdio.h>
#include "error.h"
char *program_name;
int
main (int argc, char** argv)
{
strtol_error s_err;
int i;
program_name = argv[0];
for (i=1; i<argc; i++)
{
char *p;
__unsigned long int val;
s_err = __xstrtol (argv[i], &p, 0, &val, "bckmw");
if (s_err == LONGINT_OK)
{
printf ("%s->%lu (%s)\n", argv[i], val, p);
}
else
{
STRTOL_FATAL_ERROR (argv[i], "arg", s_err);
}
}
exit (0);
}
#endif /* TESTING_XSTRTO */
|
