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/* A dynamic memory buffer that expands as you write.
*/
/*
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_DBUF_H
#define VIPS_DBUF_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
#include <vips/vips.h>
/* A buffer in the process of being written to.
*/
typedef struct _VipsDbuf {
/* All fields are private.
*/
/*< private >*/
/* The current base, and the size of the allocated memory area.
*/
unsigned char *data;
size_t allocated_size;
/* The size of the actual data that's been written. This will usually
* be <= allocated_size, but always >= write_point.
*/
size_t data_size;
/* The write point.
*/
size_t write_point;
} VipsDbuf;
VIPS_API
void vips_dbuf_init(VipsDbuf *dbuf);
VIPS_API
gboolean vips_dbuf_minimum_size(VipsDbuf *dbuf, size_t size);
VIPS_API
gboolean vips_dbuf_allocate(VipsDbuf *dbuf, size_t size);
VIPS_API
size_t vips_dbuf_read(VipsDbuf *dbuf, unsigned char *data, size_t size);
VIPS_API
unsigned char *vips_dbuf_get_write(VipsDbuf *dbuf, size_t *size);
VIPS_API
gboolean vips_dbuf_write(VipsDbuf *dbuf,
const unsigned char *data, size_t size);
VIPS_API
gboolean vips_dbuf_writef(VipsDbuf *dbuf, const char *fmt, ...)
G_GNUC_PRINTF(2, 3);
VIPS_API
gboolean vips_dbuf_write_amp(VipsDbuf *dbuf, const char *str);
VIPS_API
void vips_dbuf_reset(VipsDbuf *dbuf);
VIPS_API
void vips_dbuf_destroy(VipsDbuf *dbuf);
VIPS_API
gboolean vips_dbuf_seek(VipsDbuf *dbuf, off_t offset, int whence);
VIPS_API
void vips_dbuf_truncate(VipsDbuf *dbuf);
VIPS_API
off_t vips_dbuf_tell(VipsDbuf *dbuf);
VIPS_API
unsigned char *vips_dbuf_string(VipsDbuf *dbuf, size_t *size);
VIPS_API
unsigned char *vips_dbuf_steal(VipsDbuf *dbuf, size_t *size);
#endif /*VIPS_DBUF_H*/
#ifdef __cplusplus
}
#endif /*__cplusplus*/