/// <summary>
/// Load an index file
/// </summary>
/// <param name="file">File path</param>
/// <param name="bucketIndex">Index</param>
/// <exception cref="InvalidDataException">Index file is invalid</exception>
private unsafe void LoadIndexFile(string file, int bucketIndex)
{
using (Stream stream = File.OpenRead(file))
using (BinaryReader reader = new BinaryReader(stream)) {
var header = reader.Read <IndexHeaderV2>();
if (header.IndexVersion != 0x07 ||
header.BucketIndex != bucketIndex ||
header.ExtraBytes != 0x00 ||
header.SpanSizeBytes != 0x04 ||
header.SpanOffsBytes != 0x05 ||
header.EKeyBytes != EKey.CASC_EKEY_SIZE)
{
throw new InvalidDataException("invalid index header");
}
var eKey1Block = reader.Read <BlockSizeAndHash>();
int entryCount = eKey1Block.BlockSize / sizeof(EKeyEntry);
EKeyEntry[] entries = reader.ReadArray <EKeyEntry>(entryCount);
for (int i = 0; i < entryCount; i++)
{
EKeyEntry entry = entries[i];
if (IndexEntries.ContainsKey(entry.EKey))
{
continue;
}
IndexEntries[entry.EKey] = new IndexEntry(entry);
}
}
}
public unsafe IndexEntry(EKeyEntry entry)
{
int indexHigh = entry.FileOffsetBE[0];
int indexLow = Int32FromPtrBE(entry.FileOffsetBE + 1);
Index = indexHigh << 2 | (byte)((indexLow & 0xC0000000) >> 30);
Offset = indexLow & 0x3FFFFFFF;
}
/// <summary>
/// Load an index file
/// </summary>
/// <param name="file">File path</param>
/// <param name="bucketIndex">Index</param>
/// <exception cref="InvalidDataException">Index file is invalid</exception>
private unsafe void LoadIndexFile(string file, int bucketIndex)
{
using (Stream stream = File.OpenRead(file))
using (BinaryReader reader = new BinaryReader(stream)) {
var header = reader.Read <IndexHeaderV2>();
if (header.IndexVersion != 0x07 ||
header.BucketIndex != bucketIndex ||
header.ExtraBytes != 0x00 ||
header.SpanSizeBytes != 0x04 ||
header.SpanOffsBytes != 0x05 ||
header.EKeyBytes != EKey.CASC_EKEY_SIZE)
{
throw new InvalidDataException("invalid index header");
}
var eKey1Block = reader.Read <BlockSizeAndHash>();
int entryCount = eKey1Block.BlockSize / sizeof(EKeyEntry);
EKeyEntry[] entries = reader.ReadArray <EKeyEntry>(entryCount);
Dictionary <int, long> dataFileSizes = new Dictionary <int, long>();
for (int i = 0; i < entryCount; i++)
{
EKeyEntry entry = entries[i];
if (IndexEntries.ContainsKey(entry.EKey))
{
continue;
}
IndexEntry indexEntry = new IndexEntry(entry);
if (!dataFileSizes.TryGetValue(indexEntry.Index, out long dataFileSize))
{
var path = GetDataFilePath(indexEntry.Index);
if (!File.Exists(path))
{
continue;
}
dataFileSize = new FileInfo(path).Length;
dataFileSizes[indexEntry.Index] = dataFileSize;
}
if (indexEntry.Offset >= dataFileSize)
{
continue;
}
IndexEntries[entry.EKey] = indexEntry;
}
}
}
