/* the Music Player Daemon (MPD)
 * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
 * This project's homepage is: http://www.musicpd.org
 *
 * 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 MPD_UTILS_H
#define MPD_UTILS_H

#include <glib.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <pthread.h>

#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))

#ifndef assert_static
/* Compile time assertion developed by Ralf Holly */
/* http://pera-software.com/articles/compile-time-assertions.pdf */
#define assert_static(e) \
	do { \
		enum { assert_static__ = 1/(e) }; \
	} while (0)
#endif /* !assert_static */

char *myFgets(char *buffer, int bufferSize, FILE * fp);

void stripReturnChar(char *string);

void my_usleep(long usec);

int ipv6Supported(void);

/* trivial functions, keep them inlined */
static inline void xclose(int fd)
{
	while (close(fd) && errno == EINTR);
}

static inline ssize_t xread(int fd, void *buf, size_t len)
{
	ssize_t nr;
	while (1) {
		nr = read(fd, buf, len);
		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
			continue;
		return nr;
	}
}

static inline ssize_t xwrite(int fd, const void *buf, size_t len)
{
	ssize_t nr;
	while (1) {
		nr = write(fd, buf, len);
		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
			continue;
		return nr;
	}
}

G_GNUC_MALLOC char *xstrdup(const char *s);

G_GNUC_MALLOC void *xmalloc(size_t size);

G_GNUC_MALLOC void *xrealloc(void *ptr, size_t size);

G_GNUC_MALLOC void *xcalloc(size_t nmemb, size_t size);

/**
 * free a const pointer - unfortunately free() expects a non-const
 * pointer, for whatever reason
 */
static inline void xfree(const void *p)
{
	union {
		const void *in;
		void *out;
	} deconst = { .in = p };
	free(deconst.out);
}

char *parsePath(char *path);

int set_nonblocking(int fd);

void init_async_pipe(int file_des[2]);

void xpthread_mutex_init(pthread_mutex_t *m, const pthread_mutexattr_t *a);

void xpthread_cond_init(pthread_cond_t *c, pthread_condattr_t *a);

void xpthread_mutex_destroy(pthread_mutex_t *mutex);

void xpthread_cond_destroy(pthread_cond_t *cond);

#endif