refactor: implement data-driven config parsing using `offsetof`

Replace the bloated, hardcoded if-else chains in parse_config with a
static lookup table based on offsetof

1 files changed, 19 insertions, 2 deletions

diff --git a/config.h b/config.h
index dfe754e..2b1825b 100644
--- a/config.h
+++ b/config.h
@@ -3,6 +3,7 @@
 
 #include <stdbool.h>
 #include <stdlib.h>
+#include <stddef.h>
 #include <string.h>
 
 #define PROGRAM_NAME "kl"
@@ -27,12 +28,28 @@ struct config {
 	bool time;
 	bool keys_counter;
 	bool show_shifted;
+	bool repeat;
 };
 
 struct config *parese_config(struct config *cfg);
-
 struct config *prepare_config_file();
-
 struct config *config_init();
 
+typedef enum {
+	CFG_TYPE_BOOL,
+	CFG_TYPE_STR,
+} cfg_type;
+
+struct config_item {
+	char *key;
+	cfg_type type;
+	size_t offset;
+};
+
+extern struct config_item ci[];
+
+void* get_member(struct config_item*, size_t offset);
+
+#define CI_SIZE (int)(sizeof(ci) / sizeof(ci[0]))
+
 #endif