BOOL C4ComponentHost::LoadEx(const char *szName, C4Group &hGroup,
const char *szFilename, const char *szLanguage) {
// Load from a group set containing the provided group and
// alternative groups for cross-loading from a language pack
C4GroupSet hGroups;
hGroups.RegisterGroup(
hGroup, false, 1000,
C4GSCnt_Component); // Provided group gets highest priority
hGroups.RegisterGroups(Languages.GetPackGroups(pConfig->AtExeRelativePath(
hGroup.GetFullName().getData())),
C4GSCnt_Language);
// Load from group set
return Load(szName, hGroups, szFilename, szLanguage);
}
C4GroupSet C4Language::GetPackGroups(C4Group & hGroup)
{
// Build a group set containing the provided group and
// alternative groups for cross-loading from a language pack
char strRelativePath[_MAX_PATH + 1];
char strTargetLocation[_MAX_PATH + 1];
char strPackPath[_MAX_PATH + 1];
char strPackGroupLocation[_MAX_PATH + 1];
char strAdvance[_MAX_PATH + 1];
// Store wanted target location
SCopy(Config.AtRelativePath(hGroup.GetFullName().getData()), strRelativePath, _MAX_PATH);
SCopy(strRelativePath, strTargetLocation, _MAX_PATH);
// Adjust location by scenario origin
if (Game.C4S.Head.Origin.getLength() && SEqualNoCase(GetExtension(Game.C4S.Head.Origin.getData()), "ocs"))
{
const char *szScenarioRelativePath = GetRelativePathS(strRelativePath, Config.AtRelativePath(Game.ScenarioFilename));
if (szScenarioRelativePath != strRelativePath)
{
// this is a path within the scenario! Change to origin.
size_t iRestPathLen = SLen(szScenarioRelativePath);
if (Game.C4S.Head.Origin.getLength() + 1 + iRestPathLen <= _MAX_PATH)
{
SCopy(Game.C4S.Head.Origin.getData(), strTargetLocation);
if (iRestPathLen)
{
SAppendChar(DirectorySeparator, strTargetLocation);
SAppend(szScenarioRelativePath, strTargetLocation);
}
}
}
}
// Process all language packs (and their respective pack groups)
C4Group *pPack, *pPackGroup;
for (int iPack = 0; (pPack = Packs.GetGroup(iPack)) && (pPackGroup = PackGroups.GetGroup(iPack)); iPack++)
{
// Get current pack group position within pack
SCopy(pPack->GetFullName().getData(), strPackPath, _MAX_PATH);
GetRelativePath(pPackGroup->GetFullName().getData(), strPackPath, strPackGroupLocation);
// Pack group is at correct position within pack: continue with next pack
if (SEqualNoCase(strPackGroupLocation, strTargetLocation))
continue;
// Try to backtrack until we can reach the target location as a relative child
while ( strPackGroupLocation[0]
&& !GetRelativePath(strTargetLocation, strPackGroupLocation, strAdvance)
&& pPackGroup->OpenMother() )
{
// Update pack group location
GetRelativePath(pPackGroup->GetFullName().getData(), strPackPath, strPackGroupLocation);
}
// We can reach the target location as a relative child
if (strPackGroupLocation[0] && GetRelativePath(strTargetLocation, strPackGroupLocation, strAdvance))
{
// Advance pack group to relative child
pPackGroup->OpenChild(strAdvance);
}
// Cannot reach by advancing: need to close and reopen (rewinding group file)
else
{
// Close pack group (if it is open at all)
pPackGroup->Close();
// Reopen pack group to relative position in language pack if possible
pPackGroup->OpenAsChild(pPack, strTargetLocation);
}
}
// Store new target location
SCopy(strTargetLocation, PackGroupLocation, _MAX_FNAME);
C4GroupSet r;
// Provided group gets highest priority
r.RegisterGroup(hGroup, false, 1000, C4GSCnt_Component);
// register currently open pack groups
r.RegisterGroups(PackGroups, C4GSCnt_Language);
return r;
}