mdb: package for interacting with game's local database

mdb/mdb.go

@@ -0,0 +1,33 @@
+package mdb
+
+import (
+	"context"
+
+	"zombiezen.com/go/sqlite"
+	"zombiezen.com/go/sqlite/sqlitex"
+)
+
+// load scans all results of sql and appends them to r.
+func load[T any](ctx context.Context, db *sqlitex.Pool, r []T, sql string, row func(*sqlite.Stmt) T) ([]T, error) {
+	conn, err := db.Take(ctx)
+	defer db.Put(conn)
+	if err != nil {
+		return nil, err
+	}
+	stmt, err := conn.Prepare(sql)
+	if err != nil {
+		return nil, err
+	}
+
+	for {
+		ok, err := stmt.Step()
+		if err != nil {
+			return r, err
+		}
+		if !ok {
+			break
+		}
+		r = append(r, row(stmt))
+	}
+	return r, err
+}