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