bool iscan1(int si)
// Initializes use of a sub value (subboards[], not usub[]). If quick, then
// don't worry about anything detailed, just grab qscan info.
{
postrec p;
// make sure we have cache space
if (!cache) {
cache = static_cast<postrec *>(malloc(MAX_TO_CACHE * sizeof(postrec)));
if (!cache) {
return false;
}
}
// forget it if an invalid sub #
if (si < 0 || si >= initinfo.num_subs) {
return false;
}
// see if a sub has changed
if (subchg) {
SetCurrentReadMessageArea(-1);
}
// if already have this one set, nothing more to do
if (si == GetCurrentReadMessageArea()) {
return true;
}
// sub cache no longer valid
believe_cache = false;
// set sub filename
snprintf(subdat_fn, sizeof(subdat_fn), "%s%s.sub", syscfg.datadir, subboards[si].filename);
// open file, and create it if necessary
if (!WFile::Exists(subdat_fn)) {
if (!open_sub(true)) {
return false;
}
p.owneruser = 0;
fileSub.Write(&p, sizeof(postrec));
} else if (!open_sub(false)) {
return false;
}
// set sub
SetCurrentReadMessageArea(si);
subchg = 0;
last_msgnum = 0;
// read in first rec, specifying # posts
fileSub.Seek(0L, WFile::seekBegin);
fileSub.Read(&p, sizeof(postrec));
SetNumMessagesInCurrentMessageArea(p.owneruser);
// close file
close_sub();
// iscanned correctly
return true;
}
void write_post(int mn, postrec * pp) {
postrec *p1;
if (fileSub.IsOpen()) {
fileSub.Seek(mn * sizeof(postrec), WFile::seekBegin);
fileSub.Write(pp, sizeof(postrec));
if (believe_cache) {
if (mn >= cache_start && mn < (cache_start + MAX_TO_CACHE)) {
p1 = cache + (mn - cache_start);
if (p1 != pp) {
*p1 = *pp;
}
}
}
}
}