/* Generate the thread data we need for this group. We must call
** thread_close() before calling this again.
*/
void
thread_open()
{
if (!msgid_hash)
msgid_hash = hashcreate(201, msgid_cmp); /*TODO: pick a better size */
if (ThreadedGroup) {
/* Parse input and use msgid_hash for quick article lookups. */
/* If cached but not threaded articles exist, set up to thread them. */
if (first_subject) {
first_cached = firstart;
last_cached = firstart - 1;
parsed_art = 0;
}
}
if (sel_mode == SM_ARTICLE)
set_selector(sel_mode, sel_artsort);
else
set_selector(sel_threadmode, sel_threadsort);
#ifdef USE_MT
if (try_mt && !first_subject)
if (!mt_data())
return;
#endif
#ifdef USE_OV
if (try_ov && first_cached > last_cached)
if (thread_always)
(void) ov_data(absfirst, lastart, FALSE);
else if (firstart > lastart) {
/* If no unread articles, see if ov. exists as quick as possible */
(void) ov_data(absfirst, absfirst, FALSE);
first_cached = last_cached+1;
} else
(void) ov_data(firstart, lastart, FALSE);
#endif
#ifdef USE_NNTP
if (!ov_opened)
setmissingbits();
#endif
if (last_cached > lastart) {
toread[ng] += (ART_UNREAD)(last_cached-lastart);
/* ensure getngsize() knows the new maximum */
ngmax[ng] = lastart = last_cached;
}
thread_grow(); /* thread any new articles not yet in the database */
added_articles = 0;
sel_page_sp = 0;
sel_page_app = 0;
}
void
build_cache()
{
if (cached_ng == ng && cached_absfirst == absfirst
&& time((time_t*)NULL) < cached_time + 6*60*60L) {
grow_cache(lastart);
rc_to_bits();
if (sel_mode == SM_ARTICLE)
set_selector(sel_mode, sel_artsort);
else
set_selector(sel_threadmode, sel_threadsort);
thread_grow();
return;
}
close_cache();
cached_ng = ng;
cached_absfirst = absfirst;
cached_time = time((time_t*)NULL);
cached_cnt = lastart-absfirst+2 + 5;
article_list = (ARTICLE*)
safemalloc((MEM_SIZE)(cached_cnt * sizeof (ARTICLE)));
bzero((char*)article_list, cached_cnt * sizeof (ARTICLE));
subj_hash = hashcreate(201, subject_cmp); /*TODO: pick a better size */
rc_to_bits(); /* sets firstart */
first_cached = thread_always? absfirst : firstart;
last_cached = first_cached-1;
cached_all_in_range = FALSE;
#ifdef PENDING
subj_to_get = xref_to_get = firstart;
#endif
#ifndef USE_NNTP
setmissingbits();
#endif
/* Cache as much data in advance as possible, possibly threading
** articles as we go. */
thread_open();
}
