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/*!
\file lib/vector/Vlib/handler.c
\brief Vector library - standard error handlers
Higher level functions for reading/writing/manipulating vectors.
(C) 2011 by the GRASS Development Team
This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.
\author Martin Landa <landa.martin gmail.com>
*/
#include <grass/gis.h>
#include <grass/vector.h>
struct handler_data_io {
struct Map_info *In;
struct Map_info *Out;
};
static struct handler_data_io *handler_io;
static void error_handler_io(void *p UNUSED)
{
char *name;
struct Map_info *In, *Out;
In = handler_io->In;
Out = handler_io->Out;
if (In && In->open == VECT_OPEN_CODE)
Vect_close(In);
if (Out && Out->open == VECT_OPEN_CODE) {
name = G_store(Out->name);
Vect_close(Out);
Vect_delete(name);
G_free(name);
}
}
/*!
\brief Define standard error handler for input and output vector maps
This handler:
- close input vector map on error
- close and delete output vector map on error
Note: It's recommended to call this routine after Vect_open_old() or
Vect_open_old2().
\param In pointer in Map_info struct (input vector map) or NULL
\param Out pointer to Map_info struct (output vector map) or NULL
*/
void Vect_set_error_handler_io(struct Map_info *In, struct Map_info *Out)
{
if (!handler_io)
handler_io = G_malloc(sizeof(struct handler_data_io));
handler_io->In = In;
handler_io->Out = Out;
G_add_error_handler(error_handler_io, handler_io);
}
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