internal void Initialize(AssetStore assetStore)
{
// We need to check if there is an existing MapCache.ini file and if yes,
// load it so that we can figure out which entries are outdated.
// Then we need to update these entries, update the file, and parse it
// again. In order to do that we first load it in a temporary scope.
assetStore.PushScope();
var mapCacheIniEntry = _contentManager.UserDataFileSystem.GetFile(MapCacheIniPath);
if (mapCacheIniEntry != null)
{
_contentManager.LoadIniFile(mapCacheIniEntry);
}
// for each map, check if it was modified and the MapCache needs to be updated.
var mapCacheEntries = new Dictionary <string, MapCache>();
foreach (var mapEntry in EnumerateMaps())
{
var buildMapCache = false;
var mapCache = assetStore.MapCaches.GetByName(mapEntry.FullFilePath);
var fileInfo = new FileInfo(mapEntry.FullFilePath);
if (mapCache == null)
{
// new map
buildMapCache = true;
}
else
{
var timestamp = DateTime.FromFileTime((((long)mapCache.TimestampHi) << 32) | (uint)mapCache.TimestampLo);
// TODO: Should we check the CRC here as well?
// If yes, which implementation should we use?
if (fileInfo.LastWriteTime != timestamp &&
fileInfo.Length != mapCache.FileSize)
{
// existing map modified
buildMapCache = true;
}
}
if (buildMapCache)
{
mapCache = BuildMapCache(mapEntry, fileInfo, assetStore);
}
mapCacheEntries.Add(mapEntry.FullFilePath, mapCache);
}
// Get rid of the old MapCaches, generate the file based on
// the updated ones and load it again, this time for real.
assetStore.PopScope();
var fullMapCacheIniPath = Path.Combine(_contentManager.UserDataFileSystem.RootDirectory, MapCacheIniPath);
GenerateMapCacheIniFile(fullMapCacheIniPath, mapCacheEntries);
mapCacheIniEntry = new FileSystemEntry(
_contentManager.UserDataFileSystem,
MapCacheIniPath,
(uint)new FileInfo(fullMapCacheIniPath).Length,
() => File.OpenRead(fullMapCacheIniPath));
_contentManager.UserDataFileSystem.Update(mapCacheIniEntry);
_contentManager.LoadIniFile(mapCacheIniEntry);
}
