//-------------------------------------------------
public bool ReadBlock(Guid BlockID_in, ref Hashtable BlockTags_out, ref byte[] Bytes_out)
{
if ((this._Stream == null))
{
return(false);
}
if ((this._Blocks == null))
{
return(false);
}
int ndx = 0;
if (!this.Internal_FindBlock(BlockID_in, ref ndx))
{
return(false);
}
StreamControlBlock BLK = (StreamControlBlock)this._Blocks[ndx];
BlockTags_out = BlockStream.CloneObject <Hashtable>(BLK.Tags);
try
{
this._Stream.Seek(this._Header.DataOffset + BLK.Offset, SeekOrigin.Begin);
byte[] inbytes = new byte[BLK.Length];
this._Stream.Read(inbytes, 0, inbytes.Length);
if (!this._DecodeBytes(BlockTags_out, inbytes, ref Bytes_out))
{
return(false);
}
}
catch (Exception ex)
{
throw ex;
}
return(true);
}
//-------------------------------------------------
public StreamControlBlock(Guid ID_in, long Offset_in, int Length_in, Hashtable Tags_in)
{
this.ID = ID_in;
this.Offset = Offset_in;
this.Length = Length_in;
this.Tags = BlockStream.CloneObject <Hashtable>(Tags_in);
return;
}
//-------------------------------------------------
public bool WriteBlock(Guid BlockID_in, Hashtable BlockTags_in, byte[] Bytes_in)
{
if ((this._Stream == null))
{
return(false);
}
if (!this._Stream.CanWrite)
{
return(false);
}
if ((this._Blocks == null))
{
return(false);
}
int ndx = 0;
if (this.Internal_FindBlock(BlockID_in, ref ndx))
{
// Free Existing Block
if (!this.Internal_FreeBlock(ndx))
{
return(false);
}
}
// Encode Block
byte[] outbytes = { };
if (!this._EncodeBytes(BlockTags_in, Bytes_in, ref outbytes))
{
return(false);
}
// Allocate a New Block
if (!this.Internal_AllocateBlock(BlockID_in, outbytes.Length, ref ndx))
{
return(false);
}
StreamControlBlock BLK = (StreamControlBlock)this._Blocks[ndx];
try
{
this._Stream.Seek(this._Header.DataOffset + BLK.Offset, SeekOrigin.Begin);
this._Stream.Write(outbytes, 0, outbytes.Length);
BLK.Tags = BlockStream.CloneObject <Hashtable>(BlockTags_in);
this._BlocksDirty = true;
}
catch (Exception ex)
{
throw ex;
}
return(true);
}
//-------------------------------------------------
public void SetBlockTags(Guid BlockID_in, Hashtable Tags_in)
{
int ndx = 0;
StreamControlBlock BLK;
if (!Internal_FindBlock(BlockID_in, ref ndx))
{
return;
}
BLK = (StreamControlBlock)this._Blocks[ndx];
BLK.Tags = BlockStream.CloneObject <Hashtable>(Tags_in);
this._BlocksDirty = true;
return;
}
//---------------------------------------------------------------------
public BlockStreamFileSystem(string ThisFileName)
{
this._BlockStream = new BlockStream();
this._BlockStream.OpenFile(ThisFileName);
return;
}
