*/
enum { C_STRING, C_CHOICES, C_BOOLEAN, C_END };
struct config_item {
- /*
- * `name' is never dynamically allocated.
- */
- char *name;
- /*
- * `type' contains one of the above values.
- */
+ /* Not dynamically allocated */
+ const char *name;
+ /* Value from the above C_* enum */
int type;
- /*
- * For C_STRING, `sval' is always dynamically allocated and
- * non-NULL. For C_BOOLEAN and C_END, `sval' is always NULL.
- * For C_CHOICES, `sval' is non-NULL, _not_ dynamically
- * allocated, and contains a set of option strings separated by
- * a delimiter. The delimeter is also the first character in
- * the string, so for example ":Foo:Bar:Baz" gives three
- * options `Foo', `Bar' and `Baz'.
- */
- char *sval;
- /*
- * For C_BOOLEAN, this is TRUE or FALSE. For C_CHOICES, it
- * indicates the chosen index from the `sval' list. In the
- * above example, 0==Foo, 1==Bar and 2==Baz.
- */
- int ival;
+ union {
+ struct { /* if type == C_STRING */
+ /* Always dynamically allocated and non-NULL */
+ char *sval;
+ } string;
+ struct { /* if type == C_CHOICES */
+ /*
+ * choicenames is non-NULL, not dynamically allocated, and
+ * contains a set of option strings separated by a
+ * delimiter. The delimiter is also the first character in
+ * the string, so for example ":Foo:Bar:Baz" gives three
+ * options `Foo', `Bar' and `Baz'.
+ */
+ const char *choicenames;
+ /*
+ * Indicates the chosen index from the options in
+ * choicenames. In the above example, 0==Foo, 1==Bar and
+ * 2==Baz.
+ */
+ int selected;
+ } choices;
+ struct {
+ /* just TRUE or FALSE */
+ int bval;
+ } boolean;
+ } u;
};
/*