mirror of
https://github.com/coreutils/coreutils.git
synced 2024-11-26 11:23:47 +08:00
157 lines
2.4 KiB
C
157 lines
2.4 KiB
C
#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 */
|