Function dupStringObject

src/object.cpp:234–253

Duplicate a string object, with the guarantee that the returned object * has the same encoding as the original one. * * This function also guarantees that duplicating a small integer object * (or a string object that contains a representation of a small integer) * will always result in a fresh object that is unshared (refcount == 1). * * The resulting object always has refcount set to 1. */

 *
 * The resulting object always has refcount set to 1. */
robj *dupStringObject(const robj *o) {
    robj *d;

    serverAssert(o->type == OBJ_STRING);

    switch(o->encoding) {
    case OBJ_ENCODING_RAW:
        return createRawStringObject(szFromObj(o),sdslen(szFromObj(o)));
    case OBJ_ENCODING_EMBSTR:
        return createEmbeddedStringObject(szFromObj(o),sdslen(szFromObj(o)));
    case OBJ_ENCODING_INT:
        d = createObject(OBJ_STRING, NULL);
        d->encoding = OBJ_ENCODING_INT;
        d->m_ptr = ptrFromObj(o);
        return d;
    default:
        serverPanic("Wrong encoding.");
        break;
    }
}

robj *createQuicklistObject(void) {
    quicklist *l = quicklistCreate();