public static void GetIndexes(string url, MD5Hash[] archives)
{
Parallel.ForEach(archives, (archive, state, i) =>
{
uint indexID;
string indexName = archive.ToHexString().ToLower();
try
{
cacheLock.EnterUpgradeableReadLock();
if (!CASC.indexNames.Contains(archives[i], new MD5HashComparer()))
{
try
{
cacheLock.EnterWriteLock();
CASC.indexNames.Add(archive);
indexID = (uint)CASC.indexNames.Count - 1;
}
finally
{
cacheLock.ExitWriteLock();
}
}
else
{
return;
}
}
finally
{
cacheLock.ExitUpgradeableReadLock();
}
byte[] indexContent;
if (url.StartsWith("http"))
{
indexContent = CDN.Get(url + "data/" + indexName[0] + indexName[1] + "/" + indexName[2] + indexName[3] + "/" + indexName + ".index");
}
else
{
indexContent = File.ReadAllBytes(Path.Combine(url, "data", "" + indexName[0] + indexName[1], "" + indexName[2] + indexName[3], indexName + ".index"));
}
using (BinaryReader bin = new BinaryReader(new MemoryStream(indexContent)))
{
bin.BaseStream.Position = bin.BaseStream.Length - 12;
var entryCount = bin.ReadUInt32();
bin.BaseStream.Position = 0;
int indexEntries = indexContent.Length / 4096;
var entriesRead = 0;
for (var b = 0; b < indexEntries; b++)
{
for (var bi = 0; bi < 170; bi++)
{
var headerHash = bin.Read <MD5Hash>();
var entry = new IndexEntry()
{
indexID = indexID,
size = bin.ReadUInt32(true),
offset = bin.ReadUInt32(true)
};
entriesRead++;
cacheLock.EnterUpgradeableReadLock();
try
{
if (!CASC.indexDictionary.ContainsKey(headerHash))
{
cacheLock.EnterWriteLock();
try
{
CASC.indexDictionary.Add(headerHash, entry);
}
finally
{
cacheLock.ExitWriteLock();
}
}
}
finally
{
cacheLock.ExitUpgradeableReadLock();
}
}
if (entriesRead == entryCount)
{
return;
}
// 16 bytes padding that rounds the chunk to 4096 bytes (index entry is 24 bytes, 24 * 170 = 4080 bytes so 16 bytes remain)
bin.ReadBytes(16);
}
}
});
}
