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* Implement and use new sql_get_int_field() function to simplify getting integers from the database.

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This commit is contained in:
Justin Maggard
2009-11-02 19:21:38 +00:00
parent 9712e90bdd
commit 58ecfd6380
8 changed files with 144 additions and 148 deletions
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60
sql.c
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@ -16,6 +16,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <unistd.h>
#include "sql.h"
#include "log.h"
@ -53,3 +54,62 @@ sql_get_table(sqlite3 *db, const char *sql, char ***pazResult, int *pnRow, int *
return ret;
}
int
sql_get_int_field(sqlite3 *db, const char *fmt, ...)
{
va_list ap;
int counter, result;
char *sql;
int ret;
sqlite3_stmt *stmt;
va_start(ap, fmt);
sql = sqlite3_vmprintf(fmt, ap);
//DPRINTF(E_DEBUG, L_DB_SQL, "sql: %s\n", sql);
switch (sqlite3_prepare_v2(db, sql, -1, &stmt, NULL))
{
case SQLITE_OK:
break;
default:
DPRINTF(E_ERROR, L_DB_SQL, "prepare failed: %s\n", sqlite3_errmsg(db));
sqlite3_free(sql);
return -1;
}
sqlite3_free(sql);
for (counter = 0;
((result = sqlite3_step(stmt)) == SQLITE_BUSY || result == SQLITE_LOCKED) && counter < 2;
counter++) {
/* While SQLITE_BUSY has a built in timeout,
SQLITE_LOCKED does not, so sleep */
if (result == SQLITE_LOCKED)
sleep(1);
}
switch (result)
{
case SQLITE_DONE:
/* no rows returned */
ret = 0;
break;
case SQLITE_ROW:
if (sqlite3_column_type(stmt, 0) == SQLITE_NULL)
{
ret = 0;
break;
}
ret = sqlite3_column_int(stmt, 0);
break;
default:
DPRINTF(E_WARN, L_DB_SQL, "%s: step failed: %s\n", __func__, sqlite3_errmsg(db));
ret = -1;
break;
}
sqlite3_finalize(stmt);
return ret;
}