feat|perf: generic&efficient desktop&config parser

include/desktop.h

@@ -0,0 +1,17 @@
+#ifndef DESKTOPH_
+#define DESKTOPH_
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "macros.h"
+
+struct status {
+  bool finish;
+  int ret;
+};
+
+int read_desktop(FILE* fd, void* ctx, struct status (*cb)(void* ctx, char* NULLABLE table,
+                                               char* key, char* value));
+
+#endif