[delphizip] Re: Keeping old versions of a file in a zip archive
- From: Alistair George <bigal@xxxxxxxxxx>
- To: James Turner <delphizip@xxxxxxxxxxxxx>
- Date: Wed, 27 Nov 2002 17:01:35 +1300
Hello James,
What you say is correct for the dummy user, but there would be many who would
like the advantage of no need to rename, but select the desired version of the
file. There must be a multitude of users out there especially developers who
would like to be able to pick from various instances of the same filename based
on date time.
It would be the programmers (zipmaster user) responsibility to ensure that
cautionary messageboxes ensure the user is aware of their responsibility when
unzipping such archives.
I am simply requesting a feature, whether it gets implemented is another case
;-)
The other alternative, which I previously mentioned aligns with your suggestion
below
My earlier:
If not, is there a way I could get at the filenames and change them prior to
being zipped (same file, but renamed within zipmaster).
Which is essentially the same request as you mentioned below. However, doing it
that way, might also allow the file to be archived without change.
In that case:
JT> is assigned, then it must return, say, a null string to delete the file, '*'
JT> to skip the file, and any other value as the new name -
Any other value could be either a different or the same name, which is then
retained but important the construct does not change the filedatetimestamp.
Regards,
Al+
Wednesday, November 27, 2002, 2:45:07 PM, you wrote:
JT> So far as I am aware, there is nothing in the zip format definition to
JT> prevent several files using exactly the same name. That said, this would be
JT> highly inadvisable. All that is really needed is a strategy to rename an
JT> existing file rather than overwrite it. This could be implemented partly by
JT> a new event handler. If no event handler is assigned, then behaviour would
JT> be as now, thereby maintaining backward compatibility. If an event handler
JT> is assigned, then it must return, say, a null string to delete the file, '*'
JT> to skip the file, and any other value as the new name - or something like
JT> that.
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