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#include <string.h>
#include <stdlib.h>
#include <grass/dbmi.h>
#include <errno.h>
static int err_flag = 0;
static int err_code = DB_OK;
static char *err_msg = 0;
static int auto_print_errors = 1;
static int auto_print_protocol_errors = 1;
static void (*user_print_function) (const char *);
static char *who = NULL;
/*!
\fn
\brief
\return
\param
*/
void db_on_error(void (*f) (const char *))
{
user_print_function = f;
}
/*!
\fn
\brief
\return
\param
*/
void db_set_error_who(const char *me)
{
if (who)
db_free(who);
who = db_store(me);
}
/*!
\fn
\brief
\return
\param
*/
const char *db_get_error_who(void)
{
return who ? who : "";
}
/*!
\fn
\brief
\return
\param
*/
void db_error(const char *s)
{
if (s == NULL)
s = "<NULL error message>";
if (err_msg)
db_free(err_msg);
err_msg = db_store(s);
err_flag = 1;
if (auto_print_errors)
db_print_error();
err_code = DB_FAILED;
}
/*!
\fn
\brief
\return
\param
*/
void db_protocol_error(void)
{
int flag;
flag = auto_print_errors;
auto_print_errors = auto_print_protocol_errors;
db_error("dbmi: Protocol error");
auto_print_errors = flag;
err_code = DB_PROTOCOL_ERR;
}
/*!
\fn
\brief
\return
\param
*/
void db_syserror(const char *s)
{
char lead[1024];
char msg[1024];
err_flag = 0;
if (errno <= 0)
return;
*lead = 0;
if (who)
sprintf(lead, "%s: ", who);
if (errno > 0)
sprintf(msg, "%s%s: %s", lead, strerror(errno), s);
db_error(msg);
}
/*!
\fn
\brief
\return
\param
*/
int db_get_error_code(void)
{
return err_flag ? err_code : DB_OK;
}
/*!
\fn
\brief
\return
\param
*/
void db_memory_error(void)
{
db_error("dbmi: Out of Memory");
err_code = DB_MEMORY_ERR;
}
/*!
\fn
\brief
\return
\param
*/
void db_procedure_not_implemented(const char *name)
{
char msg[128];
sprintf(msg, "dbmi: %s() not implemented", name);
db_error(msg);
err_code = DB_NOPROC;
}
/*!
\fn
\brief
\return
\param
*/
void db_noproc_error(procnum)
{
char msg[128];
sprintf(msg, "dbmi: Invalid procedure %d", procnum);
db_error(msg);
err_code = DB_NOPROC;
}
/*!
\fn
\brief
\return
\param
*/
void db_clear_error(void)
{
err_flag = 0;
err_code = DB_OK;
errno = 0; /* clearn system errno as well */
}
/*!
\fn
\brief
\return
\param
*/
void db_print_error(void)
{
char lead[1024];
if (!err_flag)
return;
*lead = 0;
if (who)
sprintf(lead, "%s: ", who);
if (user_print_function) {
char buf[1024];
sprintf(buf, "%s%s\n", lead, err_msg);
user_print_function(buf);
}
else
fprintf(stderr, "%s%s\n", lead, err_msg);
}
static int debug_on = 0;
/*!
\fn
\brief
\return
\param
*/
void db_debug_on(void)
{
debug_on = 1;
}
/*!
\fn
\brief
\return
\param
*/
void db_debug_off(void)
{
debug_on = 0;
}
/*!
\fn
\brief
\return
\param
*/
void db_debug(const char *s)
{
if (debug_on)
fprintf(stderr, "debug(%s): %s\n", who ? who : "", s ? s : "<NULL>");
}
/*!
\fn
\brief
\return
\param
*/
const char *db_get_error_msg(void)
{
return err_flag ? err_msg : (const char *)NULL;
}
/*!
\fn void db_auto_print_errors (flag)
\brief toggles printing of DBMI error messages
\return void
\param flag
*/
void db_auto_print_errors(int flag)
{
auto_print_errors = flag;
auto_print_protocol_errors = flag;
}
/*!
\fn
\brief
\return
\param
*/
void db_auto_print_protocol_errors(int flag)
{
auto_print_protocol_errors = flag;
}
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