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/*
* This file is part of the libjaylink project.
*
* Copyright (C) 2016 Marc Schink <jaylink-dev@marcschink.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#include "libjaylink.h"
/**
* @file
*
* String utility functions.
*/
/**
* Convert a string representation of a serial number to an integer.
*
* The string representation of the serial number must be in decimal form.
*
* @param[in] str String representation to convert.
* @param[out] serial_number Serial number on success, and undefined on
* failure.
*
* @retval JAYLINK_OK Success.
* @retval JAYLINK_ERR_ARG Invalid arguments.
* @retval JAYLINK_ERR Conversion error. Serial number is invalid or string
* representation contains invalid character(s).
*
* @since 0.1.0
*/
JAYLINK_API int jaylink_parse_serial_number(const char *str,
uint32_t *serial_number)
{
char *end_ptr;
unsigned long long tmp;
if (!str || !serial_number)
return JAYLINK_ERR_ARG;
errno = 0;
tmp = strtoull(str, &end_ptr, 10);
if (*end_ptr != '\0' || errno != 0 || tmp > UINT32_MAX)
return JAYLINK_ERR;
*serial_number = tmp;
return JAYLINK_OK;
}
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