static private SkipHeader ( |
||
reader | ||
Résultat | void |
bool LoadKeyIndex(uint fileId, IKeyIndex info) { try { var reader = FileCollection.GetFile(fileId).GetExclusiveReader(); FileKeyIndex.SkipHeader(reader); var keyCount = info.KeyValueCount; _nextRoot.TrLogFileId = info.TrLogFileId; _nextRoot.TrLogOffset = info.TrLogOffset; _nextRoot.CommitUlong = info.CommitUlong; if (info.Compression == KeyIndexCompression.Old) { _nextRoot.BuildTree(keyCount, () => { var keyLength = reader.ReadVInt32(); var key = ByteBuffer.NewAsync(new byte[Math.Abs(keyLength)]); reader.ReadBlock(key); if (keyLength < 0) { _compression.DecompressKey(ref key); } return(new BTreeLeafMember { Key = key.ToByteArray(), ValueFileId = reader.ReadVUInt32(), ValueOfs = reader.ReadVUInt32(), ValueSize = reader.ReadVInt32() }); }); } else { if (info.Compression != KeyIndexCompression.None) { return(false); } var prevKey = ByteBuffer.NewEmpty(); _nextRoot.BuildTree(keyCount, () => { var prefixLen = (int)reader.ReadVUInt32(); var keyLengthWithoutPrefix = (int)reader.ReadVUInt32(); var key = ByteBuffer.NewAsync(new byte[prefixLen + keyLengthWithoutPrefix]); Array.Copy(prevKey.Buffer, prevKey.Offset, key.Buffer, key.Offset, prefixLen); reader.ReadBlock(key.SubBuffer(prefixLen)); prevKey = key; return(new BTreeLeafMember { Key = key.ToByteArray(), ValueFileId = reader.ReadVUInt32(), ValueOfs = reader.ReadVUInt32(), ValueSize = reader.ReadVInt32() }); }); } if (reader.Eof) { return(true); } if (reader.ReadInt32() == EndOfIndexFileMarker) { return(true); } return(false); } catch (Exception) { return(false); } }