/* 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 /* 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; void vips_dbuf_destroy( VipsDbuf *dbuf ); void vips_dbuf_init( VipsDbuf *dbuf ); gboolean vips_dbuf_allocate( VipsDbuf *dbuf, size_t size ); size_t vips_dbuf_read( VipsDbuf *dbuf, unsigned char *data, size_t size ); unsigned char *vips_dbuf_get_write( VipsDbuf *dbuf, size_t *size ); gboolean vips_dbuf_write( VipsDbuf *dbuf, const unsigned char *data, size_t size ); gboolean vips_dbuf_writef( VipsDbuf *dbuf, const char *fmt, ... ); void vips_dbuf_reset( VipsDbuf *dbuf ); void vips_dbuf_destroy( VipsDbuf *dbuf ); gboolean vips_dbuf_seek( VipsDbuf *dbuf, off_t offset, int whence ); void vips_dbuf_truncate( VipsDbuf *dbuf ); off_t vips_dbuf_tell( VipsDbuf *dbuf ); unsigned char *vips_dbuf_string( VipsDbuf *dbuf, size_t *size ); unsigned char *vips_dbuf_steal( VipsDbuf *dbuf, size_t *size ); #endif /*VIPS_DBUF_H*/ #ifdef __cplusplus } #endif /*__cplusplus*/