/* Destructively modify the sds string 's' to hold the specified binary
* safe string pointed by 't' of length 'len' bytes. */
sds sdscpylen(sds s, const char *t, size_t len) {
if (sdsalloc(s) < len) {
s = sdsMakeRoomFor(s,len-sdslen(s));
if (s == NULL) return NULL;
}
memcpy(s, t, len);
s[len] = '\0';
sdssetlen(s, len);
return s;
}
int main(void) {
{
struct sdshdr *sh;
sds x = sdsempty();
test_cond("sdsempty() should be strlen 0",
strlen(x) == 0 && sdslen(x) == 0 && memcmp(x,"\0",1) == 0);
sdsfree(x);
x = sdsalloc(NULL, 2);
test_cond("Create a NULL string with reserved space 2 bytes",
sdslen(x) == 0 && sdsavail(x) == 2);
sdsfree(x);
}
test_report()
return 0;
}
/* Return the total size of the allocation of the specifed sds string,
* including:
* 1) The sds header before the pointer.
* 2) The string.
* 3) The free buffer at the end if any.
* 4) The implicit null term.
*/
size_t sdsAllocSize(sds s) {
size_t alloc = sdsalloc(s);
return sdsHdrSize(s[-1])+alloc+1;
}