/*
 * common.h -- common definitions and macros
 *
 * Copyright (C) 2008 Hugo Villeneuve <hugo@hugovil.com>
 *
 * 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, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef COMMON_H
#define COMMON_H 1

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

/* Define this to remove temporary files generated by this program. */
/* #define REMOVE_TEMP_FILES 1 */

#define DEFAULT_UART_PORT "/dev/ttyS0"

#define MAX_FILENAME_LENGTH	512
#define MAX_CMD_LENGTH		1024
#define MAX_ENV_VAR_LENGTH	128

#define CR 0x0D /* ASCII code for CARRIAGE RETURN */
#define LF 0x0A /* ASCII code for LINE FEED */

/* Returns TRUE if the strings 'a' and 'b' are equal. */
#define STREQ(a, b) (strcmp((a), (b)) == 0)

/* Returns TRUE if the first 'c' characters of strings 'a' and 'b' are equal. */
#define STREQ_LEN(a, b, c) (strncmp((a), (b), (c)) == 0)

enum DEBUG_LOG_LEVELS {
	LEVEL_ERR = 0,
	LEVEL_WARN,
	LEVEL_INFO,
	LEVEL_DEBUG1,
	LEVEL_DEBUG2,
	LEVEL_DEBUG3,
};

#define LAST_DEBUG_LEVEL LEVEL_DEBUG3

int
decode_debug_option(char *arg);

void
log_debug1(const char *format, ...);

void
log_debug2(const char *format, ...);

void
log_debug3(const char *format, ...);

void
log_info(const char *format, ...);

void
log_warn(const char *format, ...);

void
log_fail(const char *format, ...);

int
hv_strncpy(char *dest, const char *src, ssize_t n);

#endif /* COMMON_H */