internal ObjectKey ReadKey(long position, int length)
{
byte[] buffer = new byte[this.keysLength];
this.ReadBuffer(buffer, position, length);
MemoryStream input = new MemoryStream(buffer);
BinaryReader reader = new BinaryReader(input);
ObjectKey objectKey = new ObjectKey(this, null, null);
objectKey.Read(reader, true);
objectKey.position = position;
return(objectKey);
}
private void WriteFree()
{
if (this.freeListKey != null)
{
this.DeleteKey(this.freeListKey, false);
}
this.freeListKey = new ObjectKey(this, "FreeKeys", new FreeKeyList(this.free));
this.freeListKey.compressionLevel = 0;
this.WriteKey(this.freeListKey);
this.freePosition = this.freeListKey.position;
this.freeLength = this.freeListKey.keyLength + this.freeListKey.objLength;
}
private void ReadCache()
{
this.cacheKey = this.file.ReadKey(this.cachePosition, 38);
this.cache = ((DataKeyIdArray)this.cacheKey.GetObject()).keys;
for (int i = 0; i < this.cache.Size; i++)
{
if (this.cache[i] != null)
{
this.cache[i].file = this.file;
this.cache[i].number = i;
}
}
}
public override object Read(BinaryReader reader)
{
Dictionary <string, ObjectKey> dictionary = new Dictionary <string, ObjectKey>();
reader.ReadByte();
int num = reader.ReadInt32();
for (int i = 0; i < num; i++)
{
ObjectKey objectKey = new ObjectKey();
objectKey.Read(reader, true);
dictionary.Add(objectKey.name, objectKey);
}
return(new ObjectKeyList(dictionary));
}
internal void WriteKey(ObjectKey key)
{
this.stream_.SetLength(0L);
key.Write(this.writer_);
if (key.position != -1L)
{
if (this.stream_.Length > (long)key.recLength)
{
this.DeleteKey(key, false);
key.recLength = (int)this.stream_.Length;
FreeKey freeKey;
if (key == this.freeListKey)
{
freeKey = this.GetFree(key.keyLength + key.objLength - 17);
}
else
{
freeKey = this.GetFree(key.keyLength + key.objLength);
}
if (freeKey != null)
{
key.position = freeKey.position;
key.recLength = freeKey.length;
this.free.Remove(freeKey);
this.freeNumber--;
if (key == this.freeListKey)
{
this.stream_.SetLength(0L);
key.Write(this.writer_);
}
}
else
{
key.position = this.endPosition;
this.endPosition += (long)key.recLength;
}
}
}
else
{
key.position = this.endPosition;
this.endPosition += (long)key.recLength;
}
this.WriteBuffer(this.stream_.GetBuffer(), key.position, (int)this.stream_.Length);
key.changed = false;
this.isModified = true;
}
protected void ReadFree()
{
if (this.freeLength == 0)
{
return;
}
byte[] buffer = new byte[this.freeLength];
this.ReadBuffer(buffer, this.freePosition, this.freeLength);
MemoryStream input = new MemoryStream(buffer);
BinaryReader reader = new BinaryReader(input);
ObjectKey objectKey = new ObjectKey(this, null, null);
objectKey.Read(reader, true);
objectKey.position = this.freePosition;
this.free = ((FreeKeyList)objectKey.GetObject()).keys;
this.freeListKey = objectKey;
}
internal void DeleteKey(ObjectKey key, bool remove = true)
{
key.deleted = true;
this.WriteBuffer(new byte[]
{
1
}, key.position + 5L, 1);
if (remove)
{
this.keys.Remove(key.name);
this.keysNumber--;
}
this.free.Add(new FreeKey(key));
this.free.Sort();
this.freeNumber++;
this.isModified = true;
}
internal void Init(DataFile file, ObjectKey key)
{
this.file = file;
this.key = key;
key.compressionLevel = 0;
key.compressionMethod = 0;
if (this.cachePosition == -1L)
{
if (this.buffer_count < 4096)
{
this.cache = new IdArray <DataKey>(4096);
}
else
{
this.cache = new IdArray <DataKey>(this.buffer_count);
}
this.cacheKey = new ObjectKey(file, "", new DataKeyIdArray(this.cache));
}
}
protected void ReadKeys()
{
if (this.keysLength == 0)
{
return;
}
byte[] buffer = new byte[this.keysLength];
this.ReadBuffer(buffer, this.keysPosition, this.keysLength);
MemoryStream input = new MemoryStream(buffer);
BinaryReader reader = new BinaryReader(input);
ObjectKey objectKey = new ObjectKey(this, null, null);
objectKey.Read(reader, true);
objectKey.position = this.keysPosition;
this.keys = ((ObjectKeyList)objectKey.GetObject()).keys;
foreach (ObjectKey current in this.keys.Values)
{
current.Init(this);
}
this.keysListKey = objectKey;
}
public void Write(string name, object obj)
{
ObjectKey objectKey;
this.keys.TryGetValue(name, out objectKey);
if (objectKey != null)
{
objectKey.obj = obj;
objectKey.Init(this);
}
else
{
objectKey = new ObjectKey(this, name, obj);
this.keys.Add(name, objectKey);
this.keysNumber++;
}
objectKey.dateTime = DateTime.Now;
if (objectKey.typeId == 101)
{
((DataSeries)obj).Init(this, objectKey);
}
this.WriteKey(objectKey);
}
public FreeKey(ObjectKey key)
{
this.file = key.file;
this.position = key.position;
this.length = key.recLength;
}
