/*
 * utils.h
 *
 * Copyright (C) 2009 Hector Martin <hector@marcansoft.com>
 * Copyright (C) 2009 Nikias Bassen <nikias@gmx.li>
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * This library 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 Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef UTILS_H
#define UTILS_H

#include <poll.h>
#include <plist/plist.h>

enum fdowner {
	FD_LISTEN,
	FD_CLIENT,
	FD_USB
};

struct fdlist {
	int count;
	int capacity;
	enum fdowner *owners;
	struct pollfd *fds;
};

void fdlist_create(struct fdlist *list);
void fdlist_add(struct fdlist *list, enum fdowner owner, int fd, short events);
void fdlist_free(struct fdlist *list);
void fdlist_reset(struct fdlist *list);

struct collection {
	void **list;
	int capacity;
};

void collection_init(struct collection *col);
void collection_add(struct collection *col, void *element);
void collection_remove(struct collection *col, void *element);
int collection_count(struct collection *col);
void collection_free(struct collection *col);
void collection_copy(struct collection *dest, struct collection *src);

#define MERGE_(a,b) a ## _ ## b
#define LABEL_(a,b) MERGE_(a, b)
#define UNIQUE_VAR(a) LABEL_(a, __LINE__)

#define FOREACH(var, col) \
	do { \
		int UNIQUE_VAR(_iter); \
		for(UNIQUE_VAR(_iter)=0; UNIQUE_VAR(_iter)<(col)->capacity; UNIQUE_VAR(_iter)++) { \
			if(!(col)->list[UNIQUE_VAR(_iter)]) continue; \
			var = (col)->list[UNIQUE_VAR(_iter)];

#define ENDFOREACH \
		} \
	} while(0);

#ifndef HAVE_STPCPY
char *stpcpy(char * s1, const char * s2);
#endif
char *string_concat(const char *str, ...);

int buffer_read_from_filename(const char *filename, char **buffer, uint64_t *length);
int buffer_write_to_filename(const char *filename, const char *buffer, uint64_t length);

enum plist_format_t {
	PLIST_FORMAT_XML,
	PLIST_FORMAT_BINARY
};

int plist_read_from_filename(plist_t *plist, const char *filename);
int plist_write_to_filename(plist_t plist, const char *filename, enum plist_format_t format);

uint64_t mstime64(void);
void get_tick_count(struct timeval * tv);

#endif