On Sun, 4 Sep 2016, Marcos Douglas wrote:
Ok, it works now.
For the records, I've used the lib http://www.gocher.me/GZIP (Silvio's
tip) and the function Base64Decode from WST framework
http://svn.code.sf.net/p/lazarus-ccr/svn/wst/trunk/
For some reason the function DecodeBase64 from Synapse doesn't work.
It receives an AnsiString. Instead, the Base64Decode function receives
a TByteDynArray.
The TDataStream class doesn't matter...
So, the code below is ugly, but shows how it works now (before the refactoring).
Thank you all for the help.
=== begin ===
procedure TMainForm.Button2Click(Sender: TObject);
var
Buf,Buf2: TMemoryStream;
B: TByteDynArray;
begin
Buf := TMemoryStream.Create;
Buf2 := TMemoryStream.Create;
try
Buf.LoadFromFile('result.txt');
B := Base64Decode(TDataStream.New(Buf).AsString,
[xoDecodeIgnoreIllegalChar]);
Buf.SaveToFile('bytes.txt');
Buf.Clear;
Buf.WriteBuffer(Pointer(B)^, Length(B));
if ZUncompressStream(Buf, Buf2) then
Buf2.SaveToFile('content.txt');
As far as I know these things can be done with all the FPC classes as well ?
The implementation in base64 unit can perfectly do everything in memory.
And ZUncompressStream can be done with TDecompressionStream ?
Var
Dest : TFileStream;
B : TBase64DecodingStream;
Z : TDecompressionStream;
begin
Z:=Nil;
B:=Nil;
Dest:=Nil;
try
B:=TBase64DecodingStream.Create(TFileStream.Create('src',fmOpenRead));
B.SourceOwner:=True;
Z:=TDecompressionStream.create(B);
Z.SourceOwner:=True;
Dest:=TFileStream.Create('result.txt',fmCreate);
Dest.CopyFrom(Z,0);
Finally
Z.Free;
Dest.Free;
end;
end;
Michael.
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