我正在创建一个应用程序,该应用程序使用 vCard struct
。目前,这个 struct
的样子是这样的:
typedef struct {
char *version;
char **names;
char *formatted_name;
char *nickname;
char *organisation;
char *title;
struct { /* Emails */
char *global_type;
char *type;
char *address;
/* Meant to be a boolean which C doesn't have -_- */
unsigned preferred : 1;
} *emails;
struct { /* Phones */
char *type;
char *number;
unsigned preferred : 1;
} *phones;
struct { /* Addresses */
char *type;
char *street;
char *city;
char *postal_code;
char *country;
unsigned preferred : 1;
} *addresses;
time_t birthday;
struct { /* Custom Fields */
char *field_name;
union {
/* Single value */
int i;
float f;
double d;
time_t t;
struct {
char *global_type;
char *type;
char *address;
/* Meant to be a boolean which C doesn't have -_- */
unsigned preferred : 1;
} email;
struct {
char *type;
char *number;
unsigned preferred : 1;
} phone;
struct {
char *type;
char *street;
char *city;
char *postal_code;
char *country;
unsigned preferred : 1;
} address;
char *s;
/* Multiple values */
int *is;
float *fs;
double *ds;
time_t *ts;
struct {
char *global_type;
char *type;
char *address;
/* Meant to be a boolean which C doesn't have -_- */
unsigned preferred : 1;
} *emails;
struct {
char *type;
char *number;
unsigned preferred : 1;
} *phones;
struct {
char *type;
char *street;
char *city;
char *postal_code;
char *country;
unsigned preferred : 1;
} *addresses;
char **ss;
} field_value;
} *custom_fields;
} vCard;
这个结构体很大,占用了很多内存。我也使用了很多指针。有没有更好、更简洁的方法来声明这个 struct
?谢谢。
另外,在 struct
内部或者相反地使用 union
是否是一个好的实践?
typedef
,那将会很有帮助。 - Paul R