BOOL C4UpdatePackage::Optimize(C4Group *pGrpFrom, C4GroupEx *pGrpTo,
const char *strFileName) {
// group file?
C4Group ItemGroupFrom;
if (!ItemGroupFrom.OpenAsChild(pGrpFrom, strFileName)) return TRUE;
// try to open target group
C4GroupEx ItemGroupTo;
char strTempGroup[_MAX_PATH + 1];
strTempGroup[0] = 0;
if (!ItemGroupTo.OpenAsChild(pGrpTo, strFileName)) return TRUE;
// update children
char ItemFileName[_MAX_PATH];
ItemGroupFrom.ResetSearch();
while (ItemGroupFrom.FindNextEntry("*", ItemFileName))
Optimize(&ItemGroupFrom, &ItemGroupTo, ItemFileName);
// set head
if (ItemGroupTo.HeadIdentical(ItemGroupFrom, true))
ItemGroupTo.SetHead(ItemGroupFrom);
// write group (do not change any headers set by DoGrpUpdate!)
ItemGroupTo.Close(FALSE);
// set core (C4Group::Save overwrites it)
pGrpTo->SaveEntryCore(*pGrpFrom, strFileName);
pGrpTo->SetSavedEntryCore(strFileName);
return TRUE;
}
BOOL C4UpdatePackage::Optimize(C4Group *pGroup, const char *strTarget) {
// Open target group
C4GroupEx TargetGrp;
if (!TargetGrp.Open(strTarget)) return FALSE;
// Both groups must be packed
if (!pGroup->IsPacked() || !TargetGrp.IsPacked()) {
TargetGrp.Close(FALSE);
return FALSE;
}
// update children
char ItemFileName[_MAX_PATH];
pGroup->ResetSearch();
while (pGroup->FindNextEntry("*", ItemFileName))
if (!SEqual(ItemFileName, C4CFN_UpdateCore) &&
!SEqual(ItemFileName, C4CFN_UpdateEntries))
Optimize(pGroup, &TargetGrp, ItemFileName);
// set header
if (TargetGrp.HeadIdentical(*pGroup, true)) TargetGrp.SetHead(*pGroup);
// save
TargetGrp.Close(FALSE);
// okay
return TRUE;
}