/* sxiv: util.h
 * Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA.
 */

#ifndef UTIL_H
#define UTIL_H

#include <stdio.h>
#include <stdarg.h>
#include <dirent.h>

#define ABS(a)   ((a) < 0 ? (-(a)) : (a))
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define LEN(a)   (sizeof(a) / sizeof(a[0]))

#define TIMEDIFF(t1,t2) (((t1)->tv_sec - (t2)->tv_sec) * 1000 +  \
                         ((t1)->tv_usec - (t2)->tv_usec) / 1000)

#define MSEC_TO_TIMEVAL(t,tv) {         \
  (tv)->tv_sec = (t) / 1000;            \
	(tv)->tv_usec = (t) % 1000 * 1000;    \
}

#ifndef TIMESPEC_TO_TIMEVAL
#define TIMESPEC_TO_TIMEVAL(tv,ts) {    \
  (tv)->tv_sec = (ts)->tv_sec;          \
  (tv)->tv_usec = (ts)->tv_nsec / 1000; \
}
#endif

typedef struct {
	DIR *dir;
	char *name;
	int d;

	char **stack;
	int stcap;
	int stlen;
} r_dir_t;

void* s_malloc(size_t);
void* s_realloc(void*, size_t);
char* s_strdup(char*);

void warn(const char*, ...);
void die(const char*, ...);

void size_readable(float*, const char**);

char* absolute_path(const char*);

int r_opendir(r_dir_t*, const char*);
int r_closedir(r_dir_t*);
char* r_readdir(r_dir_t*);
int r_mkdir(const char *);

#endif /* UTIL_H */