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d_error.c
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d_error.c
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/*!
\file lib/db/dbmi_driver/d_error.c
\brief DBMI Library (driver) - error reporting
Taken from DB drivers.
(C) 1999-2008, 2012 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 Joel Jones (CERL/UIUC)
\author Radim Blazek
\author Adopted for DBMI by Martin Landa <landa.martin@gmail.com>
*/
#include <string.h>
#include <grass/dbmi.h>
#include <grass/glocale.h>
/* initialize the global struct */
struct error_state {
char *driver_name;
dbString *errMsg;
};
static struct error_state state;
static struct error_state *st = &state;
static void init()
{
db_set_string(st->errMsg, "");
db_d_append_error(_("DBMI-%s driver error:"), st->driver_name);
db_append_string(st->errMsg, "\n");
}
/*!
\brief Init error message for DB driver
Initialize prefix
\param name driver name (eg. "SQLite"))
*/
void db_d_init_error(const char *name)
{
if (!st->errMsg) {
st->errMsg = (dbString *) G_malloc(sizeof(dbString));
db_init_string(st->errMsg);
}
G_debug(1, "db_d_init_error(): %s", name);
st->driver_name = G_malloc(strlen(name) + 1);
strcpy(st->driver_name, name);
init();
}
/*!
\brief Append error message for DB driver
\param fmt formatted message
*/
void db_d_append_error(const char *fmt, ...)
{
FILE *fp = NULL;
char *work = NULL;
int count = 0;
va_list ap;
va_start(ap, fmt);
if ((fp = tmpfile())) {
count = vfprintf(fp, fmt, ap);
if (count >= 0 && (work = G_calloc(count + 1, 1))) {
rewind(fp);
fread(work, 1, count, fp);
db_append_string(st->errMsg, work);
G_free(work);
}
fclose(fp);
}
va_end(ap);
}
/*!
\brief Report error message for DB driver
*/
void db_d_report_error(void)
{
db_append_string(st->errMsg, "\n");
db_error(db_get_string(st->errMsg));
init();
}