Better support configurations

opts/opts.h

@@ -2,16 +2,24 @@
 
 #include <stdbool.h>
 
+typedef struct option_value_s {
+  const char *name;
+  unsigned value;
+} option_value_t;
+
 typedef struct options_s {
   const char *name;
-  void *ptr;
+  char *value_string;
   union {
     unsigned *value;
     unsigned *value_uint;
+    unsigned *value_hex;
     bool *value_bool;
+    float *value_float;
   };
   const char *format;
   const char *help;
+  option_value_t *value_mapping;
   unsigned size;
 } option_t;
 
@@ -21,8 +29,11 @@ typedef struct options_s {
           __fn__; \
 })
 
-#define OPTION_FORMAT_uint "%d"
-#define OPTION_FORMAT_bool "%d"
+#define OPTION_FORMAT_uint   "%d"
+#define OPTION_FORMAT_hex    "%08x"
+#define OPTION_FORMAT_bool   "%d"
+#define OPTION_FORMAT_float  "%.1f"
+#define OPTION_FORMAT_string "%s"
 
 #define DEFINE_OPTION(_section, _name, _type) \
   { \
@@ -32,11 +43,20 @@ typedef struct options_s {
     .size = sizeof(_section##_options._name), \
   }
 
-#define DEFINE_OPTION_PTR(_section, _name, _format) \
+#define DEFINE_OPTION_VALUES(_section, _name, _value_mapping) \
   { \
     .name = #_section "-" #_name, \
-    .ptr = _section##_options._name, \
-    .format = _format, \
+    .value_hex = &_section##_options._name, \
+    .format = OPTION_FORMAT_hex, \
+    .value_mapping = _value_mapping, \
+    .size = sizeof(_section##_options._name), \
+  }
+
+#define DEFINE_OPTION_PTR(_section, _name, _type) \
+  { \
+    .name = #_section "-" #_name, \
+    .value_##_type = _section##_options._name, \
+    .format = OPTION_FORMAT_##_type, \
     .size = sizeof(_section##_options._name), \
   }