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Last change
on this file was 423, checked in by chronos, 2 years ago |
- Modified: Do not use explicit mode delphi directive as it is already set in project.
- Modified: Use UNIX instead of LINUX for conditional code to work also on FreeBSD.
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File size:
1003 bytes
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| 1 | unit UNetworkCommon;
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| 2 |
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| 3 | interface
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| 4 |
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| 5 | uses
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| 6 | Classes, SysUtils;
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| 7 |
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| 8 | procedure StreamAppend(Stream: TStream; SourceStream: TStream);
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| 9 | procedure StreamRemoveRead(Stream: TMemoryStream);
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| 10 |
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| 11 |
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| 12 | implementation
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| 13 |
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| 14 | procedure StreamAppend(Stream: TStream; SourceStream: TStream);
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| 15 | var
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| 16 | Buffer: array of Byte;
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| 17 | ReadCount: Integer;
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| 18 | Base: Integer;
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| 19 | const
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| 20 | ChunkSize = 4096;
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| 21 | begin
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| 22 | SetLength(Buffer, 0);
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| 23 | Base := 0;
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| 24 | repeat
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| 25 | SetLength(Buffer, Length(Buffer) + ChunkSize);
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| 26 | ReadCount := SourceStream.Read(Buffer[Base], ChunkSize);
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| 27 | Inc(Base, ReadCount);
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| 28 | SetLength(Buffer, Base);
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| 29 | until ReadCount < ChunkSize;
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| 30 |
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| 31 | if Length(Buffer) > 0 then begin
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| 32 | Stream.Position := Stream.Size;
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| 33 | Stream.Write(Buffer[0], Length(Buffer));
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| 34 | end;
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| 35 | end;
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| 36 |
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| 37 | procedure StreamRemoveRead(Stream: TMemoryStream);
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| 38 | begin
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| 39 | // Remove already read data from start of memory stream
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| 40 | Move(PByte(Stream.Memory + Stream.Position)^, Stream.Memory^, Stream.Size - Stream.Position);
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| 41 | Stream.SetSize(Stream.Size - Stream.Position);
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| 42 | end;
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| 43 |
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| 44 | end.
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| 45 |
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