1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
unit UNetworkCommon;
interface
uses
Classes, SysUtils;
procedure StreamAppend(Stream: TStream; SourceStream: TStream);
procedure StreamRemoveRead(Stream: TMemoryStream);
implementation
procedure StreamAppend(Stream: TStream; SourceStream: TStream);
var
Buffer: array of Byte;
ReadCount: Integer;
Base: Integer;
const
ChunkSize = 4096;
begin
SetLength(Buffer, 0);
Base := 0;
repeat
SetLength(Buffer, Length(Buffer) + ChunkSize);
ReadCount := SourceStream.Read(Buffer[Base], ChunkSize);
Inc(Base, ReadCount);
SetLength(Buffer, Base);
until ReadCount < ChunkSize;
if Length(Buffer) > 0 then begin
Stream.Position := Stream.Size;
Stream.Write(Buffer[0], Length(Buffer));
end;
end;
procedure StreamRemoveRead(Stream: TMemoryStream);
begin
// Remove already read data from start of memory stream
Move(PByte(Stream.Memory + Stream.Position)^, Stream.Memory^, Stream.Size - Stream.Position);
Stream.SetSize(Stream.Size - Stream.Position);
end;
end.
|
