/* A static string buffer, with overflow protection.
 */

/*

	This file is part of VIPS.

	VIPS 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 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 Lesser 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

 */

/*

	These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk

 */

#ifndef VIPS_BUF_H
#define VIPS_BUF_H

#include <glib.h>
#include <glib-object.h>
#include <vips/basic.h>

#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/

/* A string in the process of being written to ... multiple calls to
 * vips_buf_append add to it. On overflow append "..." and block further
 * writes.
 */

struct _VipsBuf {
	/* All fields are private.
	 */
	/*< private >*/
	char *base;		  /* String base */
	int mx;			  /* Maximum length */
	int i;			  /* Current write point */
	gboolean full;	  /* String has filled, block writes */
	int lasti;		  /* For read-recent */
	gboolean dynamic; /* We own the string with malloc() */
};

#define VIPS_BUF_STATIC(TEXT) \
	{ \
		&TEXT[0], sizeof(TEXT), 0, FALSE, 0, FALSE \
	}

/* Init and append to one of the above.
 */
VIPS_API
void vips_buf_rewind(VipsBuf *buf);
VIPS_API
void vips_buf_destroy(VipsBuf *buf);
VIPS_API
void vips_buf_init(VipsBuf *buf);
VIPS_API
void vips_buf_set_static(VipsBuf *buf, char *base, int mx);
VIPS_API
void vips_buf_set_dynamic(VipsBuf *buf, int mx);
VIPS_API
void vips_buf_init_static(VipsBuf *buf, char *base, int mx);
VIPS_API
void vips_buf_init_dynamic(VipsBuf *buf, int mx);
VIPS_API
gboolean vips_buf_appendns(VipsBuf *buf, const char *str, int sz);
VIPS_API
gboolean vips_buf_appends(VipsBuf *buf, const char *str);
VIPS_API
gboolean vips_buf_appendf(VipsBuf *buf, const char *fmt, ...)
	G_GNUC_PRINTF(2, 3);
VIPS_API
gboolean vips_buf_vappendf(VipsBuf *buf, const char *fmt, va_list ap);
VIPS_API
gboolean vips_buf_appendc(VipsBuf *buf, char ch);
VIPS_API
gboolean vips_buf_appendgv(VipsBuf *buf, GValue *value);
VIPS_API
gboolean vips_buf_append_size(VipsBuf *buf, size_t n);
VIPS_API
gboolean vips_buf_removec(VipsBuf *buf, char ch);
VIPS_API
gboolean vips_buf_change(VipsBuf *buf, const char *o, const char *n);
VIPS_API
gboolean vips_buf_is_empty(VipsBuf *buf);
VIPS_API
gboolean vips_buf_is_full(VipsBuf *buf);
VIPS_API
const char *vips_buf_all(VipsBuf *buf);
VIPS_API
const char *vips_buf_firstline(VipsBuf *buf);
VIPS_API
gboolean vips_buf_appendg(VipsBuf *buf, double g);
VIPS_API
gboolean vips_buf_appendd(VipsBuf *buf, int d);
VIPS_API
int vips_buf_len(VipsBuf *buf);

#ifdef __cplusplus
}
#endif /*__cplusplus*/

#endif /*VIPS_BUF_H*/