file.h

/*
 * Copyright 2008-2013 Various Authors
 * Copyright 2005 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef CMUS_FILE_H
#define CMUS_FILE_H

#include <stddef.h> /* size_t */
#include <sys/types.h> /* ssize_t */

ssize_t read_all(int fd, void *buf, size_t count);
ssize_t write_all(int fd, const void *buf, size_t count);

/* @filename  file to mmap for reading
 * @size      returned size of the file or -1 if failed
 *
 * returns buffer or NULL if empty file or failed
 */
char *mmap_file(const char *filename, ssize_t *size);

void buffer_for_each_line(const char *buf, int size,
		int (*cb)(void *data, const char *line),
		void *data);
void buffer_for_each_line_reverse(const char *buf, int size,
		int (*cb)(void *data, const char *line),
		void *data);
int file_for_each_line(const char *filename,
		int (*cb)(void *data, const char *line),
		void *data);

#endif