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/*
* Copyright 2004 Timo Hirvonen
*
* 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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _UTILS_H
#define _UTILS_H
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
static inline int min(int a, int b)
{
return a < b ? a : b;
}
static inline int max(int a, int b)
{
return a > b ? a : b;
}
static inline int clamp(int val, int minval, int maxval)
{
if (val < minval)
return minval;
if (val > maxval)
return maxval;
return val;
}
static inline int scale_from_percentage(int val, int max_val)
{
if (val < 0)
return (val * max_val - 50) / 100;
return (val * max_val + 50) / 100;
}
static inline int scale_to_percentage(int val, int max_val)
{
int half = max_val / 2;
if (max_val <= 0)
return 100;
if (val < 0)
return (val * 100 - half) / max_val;
return (val * 100 + half) / max_val;
}
static inline int str_to_int(const char *str, long int *val)
{
char *end;
*val = strtol(str, &end, 10);
if (*str == 0 || *end != 0)
return -1;
return 0;
}
static inline time_t file_get_mtime(const char *filename)
{
struct stat s;
/* stat follows symlinks, lstat does not */
if (stat(filename, &s) == -1)
return -1;
return s.st_mtime;
}
static inline void ns_sleep(int ns)
{
struct timespec req;
req.tv_sec = 0;
req.tv_nsec = ns;
nanosleep(&req, NULL);
}
static inline void us_sleep(int us)
{
ns_sleep(us * 1e3);
}
static inline void ms_sleep(int ms)
{
ns_sleep(ms * 1e6);
}
static inline int is_url(const char *name)
{
return strncmp(name, "http://", 7) == 0;
}
#endif
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