typedef
char *sds;
struct sdshdr {
int len; //
len 表示buf字符数组实际使用的空间大小， int free; //
free表示buf剩余空间大小 char buf[]; //
buf所分配的空间大小等于len+free };
static inline size_t sdslen(
const sds s) {
struct sdshdr *sh = (
void*)(s-(
sizeof(
struct sdshdr)));
return sh->len;
}
static inline size_t sdsavail(
const sds s) {
struct sdshdr *sh = (
void*)(s-(
sizeof(
struct sdshdr)));
return sh->free;
}
sds sdsnewlen(
const void *init, size_t initlen);
sds sdsnew(
const char *init);
sds sdsempty();
size_t sdslen(
const sds s);
sds sdsdup(
const sds s);
void sdsfree(sds s);
size_t sdsavail(sds s);
sds sdsgrowzero(sds s, size_t len);
sds sdscatlen(sds s,
void *t, size_t len);
sds sdscat(sds s,
char *t);
sds sdscatsds(sds s, sds t);
sds sdscpylen(sds s,
char *t, size_t len);
sds sdscpy(sds s,
char *t);
sds sdscatvprintf(sds s,
const char *fmt, va_list ap);
sds sdscatprintf(sds s,
const char *fmt,
);
sds sdstrim(sds s,
const char *cset);
sds sdsrange(sds s,
int start,
int end);
void sdsupdatelen(sds s);
void sdsclear(sds s);
int sdscmp(sds s1, sds s2);
sds *sdssplitlen(
char *s,
int len,
char *sep,
int seplen,
int *count);
void sdsfreesplitres(sds *tokens,
int count);
void sdstolower(sds s);
void sdstoupper(sds s);
sds sdsfromlonglong(
long long value);
sds sdscatrepr(sds s,
char *p, size_t len);
sds *sdssplitargs(
char *line,
int *argc);