useful fn for list

I find this usefull, apologies not in patch form, besides I think it'll be dismissed anyway...


list.c

/*
 * enumerate thru the items of the list, calling the user supplied function 
 * with each item, plus optionally some environment structure
 * if user fn returns 0, the enumeration can prematurely abort
 * 
 * eg
 * int prntmsgs(void *env, void * _msg);
 * ...
 * list_enumerate(list,0,prntmsgs);
 */
void list_enumerate(List *list, void * env, int (*fn)(void *env,void *item) )
{
    long i;
    void *item;

    lock(list);
    item = NULL;
    for (i = 0; i < list->len; ++i) 
    {
        item = GET(list, i);

        if (fn(env,item)) 
            break;
        
    }
    if (i == list->len) 
    {
        item = NULL;
    }
    unlock(list);

    return item;
}




/* how to use ...*


bb_box.c

#if DEBUG

/*
 * helper fn for user use in gdb
 */

int prntmsgs(void *env, void * _msg)
{
    Msg *msg = _msg;
    char *type = "";
    switch(msg->sms.sms_type) 
    {
    case mo:
     type = "mo";break;
    case mt_reply:
     type = "mt_reply";break;
    case report_mo:
     type = "report_mo";break;
    case report_mt:
     type = "report_mt";break;
    default:
     type = "unknown";
    }

    debug("bb.boxc", 0,"sms: sender <%s> receiver <%s> smsc <%s> id=%d sms_type=%s dlrmask=%d tid=%d",
    octstr_get_cstr(msg->sms.sender),
    octstr_get_cstr(msg->sms.receiver),
    octstr_get_cstr(msg->sms.smsc_id),
    msg->sms.id,
    type,
    msg->sms.dlr_mask,
    msg->sms.tid
    );
    return 0;
}

void listprint(int who)
{
    List *list;
    int len;
    int i;

    if(who==1)
 list = incoming_sms;
    if(who==2)
 list = outgoing_sms;

    len = list_len(list);

    list_enumerate(list,0,prntmsgs);
}

#endif



say your in gdb, do

call listprint(1)
call listprint(2);

*** very useful when your debugging and just want to see whats in the list at anytime !! ***