private long updatebody(long position, IndexDocument doc, string newbody, string meta)
{
int bodylen = 0;
var bodybytes = this.Encoding.GetBytes(newbody);
if (bodybytes != null)
{
bodylen = bodybytes.Length;
}
if (bodylen < doc.BodyBufferLen)
{
this.DataStream.Position = position + 6;
this.DataStream.Write(BitConverter.GetBytes(bodylen), 0, 4);
//write body bytes.
this.DataStream.Position = position + 14 + doc.MetaLen;
this.DataStream.Write(bodybytes, 0, bodylen);
return(position);
}
else
{
return(AddDoc(newbody, meta));
}
}
public IndexDocument LoadDoc(long Position)
{
lock (_locker)
{
byte[] header = new byte[14];
this.DataStream.Position = Position;
this.DataStream.Read(header, 0, 14);
if (header[0] != 10 || header[1] != 13)
{
return(null);
}
int metalen = BitConverter.ToInt32(header, 2);
int bodylen = BitConverter.ToInt32(header, 6);
int bodybufferlen = BitConverter.ToInt32(header, 10);
int totallen = metalen + bodylen;
byte[] content = new byte[totallen];
this.DataStream.Position = Position + 14;
this.DataStream.Read(content, 0, totallen);
IndexDocument doc = new IndexDocument()
{
MetaLen = metalen, BodyBufferLen = bodybufferlen, BodyLen = bodylen
};
if (metalen > 0)
{
doc.Meta = this.Encoding.GetString(content, 0, metalen);
}
if (bodylen > 0)
{
doc.Body = this.Encoding.GetString(content, metalen, bodylen);
}
return(doc);
}
}
