[fpc-pascal] Porting code from Windows D2007, missing Windows functions

Michael Van Canneyt michael at freepascal.org
Thu Jul 14 15:22:14 CEST 2016

On Thu, 14 Jul 2016, Bo Berglund wrote:

> On Thu, 14 Jul 2016 13:32:38 +0200 (CEST), Michael Van Canneyt
> <michael at freepascal.org> wrote:
>>> Do you have an example of how to do the above with FPC ZLib?
>> You can find this almost verbatim in the examples of paszlib, using the
>> zipper unit.
> The one I found is this (a command line utility):
> uses
>  Zipper;
> var
>  OurZipper: TZipper;
>  I: Integer;
> begin
>  OurZipper := TZipper.Create;
>  try
>    OurZipper.FileName := ParamStr(1);
>    for I := 2 to ParamCount do
>      OurZipper.Entries.AddFileEntry(ParamStr(I), ParamStr(I));
>    OurZipper.ZipAllFiles;
>  finally
>    OurZipper.Free;
>  end;
> end.
> It seems straightforward for my method to add all the supplied files
> in the stringlist the way the example does it.
> But this line:
> OurZipper.Entries.AddFileEntry(ParamStr(I), ParamStr(I));
> seems to add the files to zip into some kind of internal list.
> Why does it take the same argument twice?

Because you can add a file with a different filename to the zip.
e.g. an absolute filename with a relative filename.
Or add a case sensitive filename for the filesystem with an all-lowercase

> One issue I had with PasZip is that I have not found a way to enter
> the extract (target) dir for the zipped files.
> Can I specify a relative target extract path in the TZipper case, for
> example relative to the folder where the zipfile being extracted
> resides?
> If so how?

With the call above. The first name is the 'real' filename. The second name
is the filename that will be stored in the zip.
(or was it vice versa ?)


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