initialize_copy

static VALUE cState_init_copy(VALUE obj, VALUE orig)
{
    JSON_Generator_State *objState, *origState;

    if (obj == orig) return obj;
    GET_STATE_TO(obj, objState);
    GET_STATE_TO(orig, origState);
    if (!objState) rb_raise(rb_eArgError, "unallocated JSON::State");

    MEMCPY(objState, origState, JSON_Generator_State, 1);
    objState->indent = fstrndup(origState->indent, origState->indent_len);
    objState->space = fstrndup(origState->space, origState->space_len);
    objState->space_before = fstrndup(origState->space_before, origState->space_before_len);
    objState->object_nl = fstrndup(origState->object_nl, origState->object_nl_len);
    objState->array_nl = fstrndup(origState->array_nl, origState->array_nl_len);
    if (origState->array_delim) objState->array_delim = fbuffer_dup(origState->array_delim);
    if (origState->object_delim) objState->object_delim = fbuffer_dup(origState->object_delim);
    if (origState->object_delim2) objState->object_delim2 = fbuffer_dup(origState->object_delim2);
    return obj;
}