selectDb(c,0);
c->fd = -1;
c->querybuf = sdsempty();
+ c->querybuf_peak = 0;
c->argc = 0;
c->argv = NULL;
c->bufpos = 0;
return 1;
}
+/* Write either the key or the value of the currently selected item of an hash.
+ * The 'hi' argument passes a valid Redis hash iterator.
+ * The 'what' filed specifies if to write a key or a value and can be
+ * either REDIS_HASH_KEY or REDIS_HASH_VALUE.
+ *
+ * The function returns 0 on error, non-zero on success. */
+static int rioWriteHashIteratorCursor(rio *r, hashTypeIterator *hi, int what) {
+ if (hi->encoding == REDIS_ENCODING_ZIPLIST) {
+ unsigned char *vstr = NULL;
+ unsigned int vlen = UINT_MAX;
+ long long vll = LLONG_MAX;
+
+ hashTypeCurrentFromZiplist(hi, what, &vstr, &vlen, &vll);
+ if (vstr) {
+ return rioWriteBulkString(r, (char*)vstr, vlen);
+ } else {
+ return rioWriteBulkLongLong(r, vll);
+ }
+
+ } else if (hi->encoding == REDIS_ENCODING_HT) {
+ robj *value;
+
+ hashTypeCurrentFromHashTable(hi, what, &value);
+ return rioWriteBulkObject(r, value);
+ }
+
+ redisPanic("Unknown hash encoding");
+ return 0;
+}
+
/* Emit the commands needed to rebuild a hash object.
* The function returns 0 on error, 1 on success. */
int rewriteHashObject(rio *r, robj *key, robj *o) {
+ hashTypeIterator *hi;
long long count = 0, items = hashTypeLength(o);
- if (o->encoding == REDIS_ENCODING_ZIPMAP) {
- unsigned char *p = zipmapRewind(o->ptr);
- unsigned char *field, *val;
- unsigned int flen, vlen;
+ hi = hashTypeInitIterator(o);
+ while (hashTypeNext(hi) != REDIS_ERR) {
+ if (count == 0) {
+ int cmd_items = (items > REDIS_AOF_REWRITE_ITEMS_PER_CMD) ?
+ REDIS_AOF_REWRITE_ITEMS_PER_CMD : items;
- while((p = zipmapNext(p,&field,&flen,&val,&vlen)) != NULL) {
- if (count == 0) {
- int cmd_items = (items > REDIS_AOF_REWRITE_ITEMS_PER_CMD) ?
- REDIS_AOF_REWRITE_ITEMS_PER_CMD : items;
-
- if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
- if (rioWriteBulkString(r,"HMSET",5) == 0) return 0;
- if (rioWriteBulkObject(r,key) == 0) return 0;
- }
- if (rioWriteBulkString(r,(char*)field,flen) == 0) return 0;
- if (rioWriteBulkString(r,(char*)val,vlen) == 0) return 0;
- if (++count == REDIS_AOF_REWRITE_ITEMS_PER_CMD) count = 0;
- items--;
+ if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
+ if (rioWriteBulkString(r,"HMSET",5) == 0) return 0;
+ if (rioWriteBulkObject(r,key) == 0) return 0;
}
- } else {
- dictIterator *di = dictGetIterator(o->ptr);
- dictEntry *de;
- while((de = dictNext(di)) != NULL) {
- robj *field = dictGetKey(de);
- robj *val = dictGetVal(de);
+ if (rioWriteHashIteratorCursor(r, hi, REDIS_HASH_KEY) == 0) return 0;
+ if (rioWriteHashIteratorCursor(r, hi, REDIS_HASH_VALUE) == 0) return 0;
+ if (++count == REDIS_AOF_REWRITE_ITEMS_PER_CMD) count = 0;
+ items--;
+ }
- if (count == 0) {
- int cmd_items = (items > REDIS_AOF_REWRITE_ITEMS_PER_CMD) ?
- REDIS_AOF_REWRITE_ITEMS_PER_CMD : items;
+ hashTypeReleaseIterator(hi);
- if (rioWriteBulkCount(r,'*',2+cmd_items*2) == 0) return 0;
- if (rioWriteBulkString(r,"HMSET",5) == 0) return 0;
- if (rioWriteBulkObject(r,key) == 0) return 0;
- }
- if (rioWriteBulkObject(r,field) == 0) return 0;
- if (rioWriteBulkObject(r,val) == 0) return 0;
- if (++count == REDIS_AOF_REWRITE_ITEMS_PER_CMD) count = 0;
- items--;
- }
- dictReleaseIterator(di);
- }
return 1;
}