/*
 * buffer.h -- safe unlimited size string
 *
 * Copyright (c) 2011, David Demelier <markand@malikania.fr>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _BUFFER_H_
#define _BUFFER_H_

#include <stdarg.h>

#ifdef __cplusplus
extern "C" {
#endif

#define	BUFFER_DEFAULT_BSIZE	512

enum buffer_type {
	BUFFER_FIXED	= 0,
	BUFFER_AUTO	= 1
};

struct buffer {
	enum buffer_type type;		/* buffer type (default AUTO) */
	char		*text;		/* string buffer */
	size_t		length;		/* string's real length */
	size_t		size;		/* current allocated size */
	int		bsize;		/* initial length */
};

struct buffer	*buffer_new(enum buffer_type, int);
int		buffer_strcat(struct buffer *, const char *);
int		buffer_putc(struct buffer *buf, char);
int		buffer_bcat(struct buffer *, const void *, size_t);
int		buffer_vprintf(struct buffer *, const char *, va_list);
int		buffer_printf(struct buffer *, const char *, ...);
int		buffer_shrink(struct buffer *);
char		*buffer_end(struct buffer *);
void		buffer_clear(struct buffer *);
void		buffer_free(struct buffer *);

#ifdef __cplusplus
}
#endif

#endif /* _BUFFER_H_ */