Zeoslib Portal

Hi Jan;

Maybe this will be useful:
https://github.com/mwsrc/XtremeRAT/blob ... base64.pas

Michal

The problem I reported was a particular situation of using ZMemTable. In fact, everything that compiles in Delphi 7 compiles without problems in subsequent non-Unicode Delphi versions (not always the other way round). Unless you don't have all the sources, then there's a problem. I'm going to stay w...

Zeos7.3 is renamed Zeos8 and so far it compiles for Delphi7 but I think Delphi7 is probably worth abandoning
in the context of Windows10 and especially 11 and in the perspective of 12.
https://en.wikipedia.org/wiki/History_o ... (software)

Michal

ZConnection1.Connected:=FALSE;
ZQuery1.Open;

Shows old value

Michal

And where is ZQuery1.Post?

Michal

The problem occurs in D2007.
ZDbcXmlUtils needs ZBase64.dcu which does not compile in D2007:
[DCC Error] ZBase64.pas(40): E2003 Undeclared identifier: 'TBytesStream'
[DCC Error] ZBase64.pas(92): E2003 Undeclared identifier: 'TBytesStream'

Michal

Hi Jan, In ZEOS 8.0.0 /trunk svn 8015 (Delphi 10.3.3) In zdbc.dpk is lacking ZDbcXmlUtils in '..\..\src\dbc\ZDbcXmlUtils.pas' After adding this it compiles and works. Delphi XE2-Win32/Win64 too. The problem occurs in D2007. ZDbcXmlUtils needs ZBase64.dcu which does not compile in D2007: [DCC Error] ...

Maybe it makes sense th have a 32Bits version number like FFFFFFFF and decrement it with each new version. Having this many bits set to 1 should be quite uncommon? With this, FF FF FF FF is a good idea because now the first 4 bytes are occupied by the number of fields, so it does not come close to ...

From what I see, errors in D7 appear especially at:

ZMemTable1.SaveToStream(fs);
ZMemTable1.LoadFromStream(fs);

In D2007 in the same situation no.

Michal

Hi Jan,

For example: Idea @stoffman:
"Make the first byte of the file a version number of the format"
He's nice.
Might actually leave it disabled by default for now:
{.$DEFINE ZMEMTABLE_ENABLE_STREAM_EXPORT_IMPORT}

Michal

It works in all the ones I mentioned, that is since D2006 for sure. I haven't tested between versions (I'm using it as a temporary, local application database). It seems that there is no compatibility between versions yet (maybe in the future it would be worth developing a single portable format) As...

There is an interesting toggle in Zeos.inc: // If defined the ZMemTable component allows importing and exporting it's layout and data to a TStream descendant. Only tested with D10.3+ !!! {.$DEFINE ZMEMTABLE_ENABLE_STREAM_EXPORT_IMPORT} It works for me with all tested versions. So I unlock it by defa...

ZEOS 8.0.0 /trunk svn 8005 https://sourceforge.net/p/zeoslib/code-0/HEAD/tree/trunk Compiles and Works: - Lazarus 2.2.6-Win32/Win64, - Delphi D2006, - Delphi D2007, - Delphi XE2-Win32/Win64, - Delphi 10-Win32/Win64, - Delphi 10.3.3 Rio-Win32/Win64/(Android/Android64- compiles but requires more thor...

Try this:
https://sourceforge.net/projects/zeosli ... p/download

Michal

ZEOS 8.0.0 /trunk svn 7994 https://sourceforge.net/p/zeoslib/code-0/HEAD/tree/trunk Compiles and Works: - Lazarus 2.2.6-Win32/Win64, - Delphi 2007, - Delphi XE2-Win32/Win64, - Delphi 10-Win32/Win64, - Delphi 10.3.3 Rio-Win32/Win64/(Android/Android64- compiles but requires more thorough testing), - ...