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inline support for dual encoding in the LINDEX and LSET commands

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This commit is contained in:
Pieter Noordhuis 2010-05-30 02:11:59 +02:00
parent d72562f7ba
commit 697bd5673f
1 changed files with 53 additions and 29 deletions
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82
redis.c
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@ -4878,45 +4878,69 @@ static void llenCommand(redisClient *c) {
}
static void lindexCommand(redisClient *c) {
robj *o;
robj *o = lookupKeyReadOrReply(c,c->argv[1],shared.nullbulk);
if (o == NULL || checkType(c,o,REDIS_LIST)) return;
int index = atoi(c->argv[2]->ptr);
list *list;
listNode *ln;
if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.nullbulk)) == NULL ||
checkType(c,o,REDIS_LIST)) return;
list = o->ptr;
ln = listIndex(list, index);
if (ln == NULL) {
addReply(c,shared.nullbulk);
if (o->encoding == REDIS_ENCODING_ZIPLIST) {
unsigned char *p;
char *v;
unsigned int vlen;
long long vval;
p = ziplistIndex(o->ptr,index);
if (ziplistGet(p,&v,&vlen,&vval)) {
if (v) {
addReplySds(c,sdsnewlen(v,vlen));
} else {
addReplyLongLong(c,vval);
}
} else {
addReply(c,shared.nullbulk);
}
} else if (o->encoding == REDIS_ENCODING_LIST) {
listNode *ln = listIndex(o->ptr,index);
if (ln != NULL) {
addReply(c,(robj*)listNodeValue(ln));
} else {
addReply(c,shared.nullbulk);
}
} else {
robj *ele = listNodeValue(ln);
addReplyBulk(c,ele);
redisPanic("Unknown list encoding");
}
}
static void lsetCommand(redisClient *c) {
robj *o;
robj *o = lookupKeyWriteOrReply(c,c->argv[1],shared.nokeyerr);
if (o == NULL || checkType(c,o,REDIS_LIST)) return;
int index = atoi(c->argv[2]->ptr);
list *list;
listNode *ln;
robj *value = c->argv[3];
if ((o = lookupKeyWriteOrReply(c,c->argv[1],shared.nokeyerr)) == NULL ||
checkType(c,o,REDIS_LIST)) return;
list = o->ptr;
ln = listIndex(list, index);
if (ln == NULL) {
addReply(c,shared.outofrangeerr);
if (o->encoding == REDIS_ENCODING_ZIPLIST) {
unsigned char *p, *zl = o->ptr;
p = ziplistIndex(zl,index);
if (p == NULL) {
addReply(c,shared.outofrangeerr);
} else {
o->ptr = ziplistDelete(o->ptr,&p,ZIPLIST_TAIL);
value = getDecodedObject(value);
o->ptr = ziplistInsert(o->ptr,p,value->ptr,sdslen(value->ptr));
decrRefCount(value);
addReply(c,shared.ok);
server.dirty++;
}
} else if (o->encoding == REDIS_ENCODING_LIST) {
listNode *ln = listIndex(o->ptr,index);
if (ln == NULL) {
addReply(c,shared.outofrangeerr);
} else {
decrRefCount((robj*)listNodeValue(ln));
listNodeValue(ln) = value;
incrRefCount(value);
addReply(c,shared.ok);
server.dirty++;
}
} else {
robj *ele = listNodeValue(ln);
decrRefCount(ele);
listNodeValue(ln) = c->argv[3];
incrRefCount(c->argv[3]);
addReply(c,shared.ok);
server.dirty++;
redisPanic("Unknown list encoding");
}
}