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/* vi: set sw=4 ts=4: */
/*
* Copyright (C) 2003-2004 Erik Andersen <andersen@codepoet.org>
*/
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <errno.h>
#include <assert.h>
#include <ctype.h>
#include "busybox.h"
long bb_xgetlarg(const char *arg, int base, long lower, long upper)
{
long result;
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
/* Don't allow leading whitespace.
* Wrap isspace in () to make sure we call the
* function rather than the macro. */
if ((isspace)(*arg)) {
bb_show_usage();
}
errno = 0;
result = strtol(arg, &endptr, base);
if (errno != 0 || *endptr!='\0' || endptr==arg || result < lower || result > upper)
bb_show_usage();
errno = errno_save;
return result;
}
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