Implemented tag searching.

1 files changed, 77 insertions, 0 deletions

diff --git a/db.c b/db.c
index d47793a..0688d75 100644
--- a/db.c
+++ b/db.c
@@ -402,6 +402,83 @@ int db_get_wallpapers(sqlite_uint64 dirid, GArray **array) {
 	return 1;
 }
 
+static gchar *gen_joinstring(int c) {
+	char **split, *join;
+
+	split = g_malloc(sizeof(gchar*) * (c+1));
+	split[c] = NULL;
+
+	for(int i = 0; i < c; i++) {
+		split[i] = "?";
+	}
+
+	join = g_strjoinv(", ", split);
+
+	g_free(split);
+
+	return join;
+}
+
+/*
+ * tags = uint64
+ * walls = struct tag_t *
+ */
+int db_get_walls_by_tags(GArray *tags, GArray **array) {
+	sqlite3_stmt *stmt;
+	int rc;
+	char *join, *query;
+	struct wallpaper_t temp, *temp2;
+
+	join = gen_joinstring(tags->len);
+	query = g_strdup_printf("SELECT w.id, w.filepath, w.size, w.width, w.height "
+			"FROM wallpaper w JOIN walltags t ON (t.wallid = w.id) WHERE t.tagid IN (%s)",
+			join);
+	g_free(join);
+
+	rc = sqlite3_prepare_v2(db, query, -1, &stmt, NULL);
+
+	g_free(query);
+
+	if(rc != SQLITE_OK) {
+		return 0;
+	}
+
+	for(int i = 0; i < tags->len; i++) {
+		sqlite_uint64 id;
+
+		id = g_array_index(tags, sqlite_uint64, i);
+		rc = sqlite3_bind_int64(stmt, i + 1, id);
+
+		if(rc != SQLITE_OK) {
+			sqlite3_finalize(stmt);
+			return 0;
+		}
+	}
+
+	*array = g_array_new(FALSE, FALSE, sizeof(struct wallpaper_t));
+	while((rc = sqlite3_step(stmt)) == SQLITE_ROW) {
+		temp.filepath = g_strdup(sqlite3_column_text(stmt, 1));
+		temp.id = sqlite3_column_int64(stmt, 0);
+		temp.size = sqlite3_column_int(stmt, 2);
+		temp.width = sqlite3_column_int(stmt, 3);
+		temp.height = sqlite3_column_int(stmt, 4);
+		g_array_append_val(*array, temp);
+	}
+
+	sqlite3_finalize(stmt);
+
+	if(rc != SQLITE_DONE) {
+		for(int i = 0; i < (*array)->len; i++) {
+			temp2 = &g_array_index(*array, struct wallpaper_t, i);
+			g_free(temp2->filepath);
+		}
+		g_array_free(*array, TRUE);
+		return 0;
+	}
+
+	return 1;
+}
+
 sqlite_uint64 db_add_tag(const char *name) {
 	sqlite3_stmt *stmt;
 	int rc;