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[mpd] add support for count command

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This commit is contained in:
chme
2015-04-06 09:19:48 +02:00
parent e101812478
commit b7d5b1650e
3 changed files with 129 additions and 2 deletions
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64
src/db.c
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@@ -1493,6 +1493,29 @@ db_build_query_browse(struct query_params *qp, char *field, char *sort_field, ch
return 0;
}
static int
db_build_query_count_items(struct query_params *qp, char **q)
{
char *query;
qp->results = 1;
if (qp->filter)
query = sqlite3_mprintf("SELECT COUNT(*), SUM(song_length) FROM files f WHERE f.disabled = 0 AND %s;", qp->filter);
else
return -1;
if (!query)
{
DPRINTF(E_LOG, L_DB, "Out of memory for query string\n");
return -1;
}
*q = query;
return 0;
}
int
db_query_start(struct query_params *qp)
{
@@ -1551,6 +1574,10 @@ db_query_start(struct query_params *qp)
ret = db_build_query_browse(qp, "year", "year", &query);
break;
case Q_COUNT_ITEMS:
ret = db_build_query_count_items(qp, &query);
break;
default:
DPRINTF(E_LOG, L_DB, "Unknown query type\n");
return -1;
@@ -1805,6 +1832,43 @@ db_query_fetch_group(struct query_params *qp, struct db_group_info *dbgri)
return 0;
}
int
db_query_fetch_count(struct query_params *qp, struct count_info *ci)
{
int ret;
memset(ci, 0, sizeof(struct count_info));
if (!qp->stmt)
{
DPRINTF(E_LOG, L_DB, "Query not started!\n");
return -1;
}
if (qp->type != Q_COUNT_ITEMS)
{
DPRINTF(E_LOG, L_DB, "Not a count query!\n");
return -1;
}
ret = db_blocking_step(qp->stmt);
if (ret == SQLITE_DONE)
{
DPRINTF(E_DBG, L_DB, "End of query results for count query\n");
return 0;
}
else if (ret != SQLITE_ROW)
{
DPRINTF(E_LOG, L_DB, "Could not step: %s\n", sqlite3_errmsg(hdl));
return -1;
}
ci->count = sqlite3_column_int(qp->stmt, 0);
ci->length = sqlite3_column_int(qp->stmt, 1);
return 0;
}
int
db_query_fetch_string(struct query_params *qp, char **string)
{