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/* wydawca - FTP release synchronization daemon
Copyright (C) 2007 Sergey Poznyakoff
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "wydawca.h"
#include "sql.h"
struct method_descr
{
const char *name;
int (*init) (struct access_method *);
int (*done) (struct access_method *);
int (*free) (struct access_method *);
int (*get) (struct access_method *method, unsigned nrow, unsigned ncol);
int (*run) (struct access_method *, const char *);
};
static struct method_descr method_tab[] = {
{ "none", NULL, NULL, NULL, NULL, NULL },
{ "sql", sql_init_method, sql_done_method, sql_free_result,
sql_get_method, sql_run_method },
{ "builtin", NULL, NULL, NULL, NULL, NULL },
{ "external", NULL, NULL, NULL, NULL, NULL }
};
struct access_method *
method_new (enum access_method_type type)
{
struct access_method *mp = xmalloc (sizeof mp[0]);
memset (mp, 0, sizeof mp[0]);
mp->type = type;
return mp;
}
int
method_init (struct access_method *method)
{
struct method_descr *mp = method_tab + method->type;
int rc = 0;
if (method->init_passed++)
return 0;
if (debug_level > 1)
logmsg (LOG_DEBUG, "Initializing method: %s \"%s\" \"%s\"",
mp->name, method->param[0],
method->param[1] ? method->param[1] : "");
if (mp->init)
rc = mp->init (method);
if (rc == 0)
method->init_passed = 1;
return rc;
}
int
method_done (struct access_method *method)
{
struct method_descr *mp = method_tab + method->type;
int rc = 0;
if (method->init_passed == 0)
return 0;
if (--method->init_passed)
return 0;
if (debug_level > 1)
logmsg (LOG_DEBUG, "Closing method: %s \"%s\" \"%s\"",
mp->name, method->param[0],
method->param[1] ? method->param[1] : "");
if (mp->done)
rc = mp->done (method);
free (method->result);
method->result = NULL;
method->result_size = 0;
return rc;
}
int
method_run (struct access_method *method, const char *cmd)
{
struct method_descr *mp = method_tab + method->type;
if (debug_level > 1)
logmsg (LOG_DEBUG, "Running method: %s \"%s\"", mp->name, cmd);
if (!method->init_passed)
{
logmsg (LOG_CRIT, "INTERNAL ERROR: Method %s \"%s\" not initialized",
mp->name, method->param[0]);
return 1;
}
if (!mp->run)
{
logmsg (LOG_CRIT, "INTERNAL ERROR: No run function for method %s \"%s\"",
mp->name, method->param[0]);
return 1;
}
if (mp->free)
mp->free (method);
return mp->run (method, cmd);
}
unsigned
method_num_rows (struct access_method *method)
{
return method->nrow;
}
unsigned
method_num_cols (struct access_method *method)
{
return method->ncol;
}
const char *
method_result (struct access_method *method, unsigned nrow, unsigned ncol)
{
struct method_descr *mp = method_tab + method->type;
if (nrow >= method->nrow || ncol >= method->ncol
|| mp->get (method, nrow, ncol))
return NULL;
return method->result;
}
void
method_copy_result (struct access_method *method, const char *res, size_t size)
{
if (method->result_size < size + 1)
{
method->result_size = size + 1;
method->result = x2realloc (method->result, &method->result_size);
}
memcpy (method->result, res, size);
method->result[size] = 0;
}
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