[delphizip] Re: Keeping old versions of a file in a zip archive
- From: "Russell Peters" <russellpeters@xxxxxxxxxxx>
- To: <delphizip@xxxxxxxxxxxxx>
- Date: Thu, 28 Nov 2002 15:37:04 +1100
It only triggers as it finds files outside the zip (I am not certain but I
suspect it might trigger when 'freshening' files - I will have to check).
Russell Peters
http://www.users.bigpond.com/russellpeters/delphizip.html
----- Original Message -----
From: "Alistair George" <bigal@xxxxxxxxxx>
To: "Russell Peters" <delphizip@xxxxxxxxxxxxx>
Sent: Thursday, November 28, 2002 8:55 AM
Subject: [delphizip] Re: Keeping old versions of a file in a zip archive
>
> Hello Russell,
> I am programming other sections of my software at present, but next stage
was to
> trial the 'onsetnewname' and massage the files accordingly.
> Please advise:
> RP> The OnSetNewName only allows you to rename the new file with the names
of
> RP> the old files staying unchanged.
> Does this mean that say my archive contains myfile.exe, and I am using
> addfreshen, that a later instance of myfile.exe will not trigger the
> onsetnewname?
>
> If it does trigger, are you saying I cannot rename the later file for
inclusion?
>
> The below stuff you mention looks great thanks
> Al+
> RP> I am working towards being able to do such operations as changing
existing
> RP> file details (rename,change date & attr) or delete the file,at the
same as
> RP> new files are added - this condences a number of operations into a
single
> RP> rebuild.
> RP> I might be able to allow the use of a name (or any detail?) modifying
> RP> function on a per file basis - this might make renaming files easier
though
> RP> you would need to know which files first (this is still very much in
the
> RP> planning stage at present).
> RP> Russell Peters
> RP> http://www.users.bigpond.com/russellpeters/delphizip.html
> RP> ----- Original Message -----
> RP> From: "James Turner" <james.d.h.turner@xxxxxxxxxxxx>
> RP> To: <delphizip@xxxxxxxxxxxxx>
> RP> Sent: Wednesday, November 27, 2002 10:57 PM
> RP> Subject: [delphizip] Re: Keeping old versions of a file in a zip
archive
>
>
> >>
> >> When I suggest a solution to a problem, I aim to achieve simplicity,
> >> backward compatibility, and flexibility. The event handler approach I
> >> suggested achieves all these. For instance, provided the event handler
has
> >> access to a directory list, renaming old versions of MYFILE.TXT to
> >> MYFILE.TXT#1, MYFILE.TXT#2, etc is easy. If such an event interface
were
> >> added to ZipMaster, it would be easy to supply a built-in (but not
> >> automatically assigned) event handler to perform this action thereby
> >> requiring virtually no work from the user.
> >>
> >> Relying on file dates is, precarious and would undoubtedly lead to
> RP> problems.
> >> Renaming the files makes it obvious when reading a directory list
(human
> >> being), which file is the most recent without having to check dates.
> >> However, for programmers that want to rely on dates, an event handler
that
> >> returns, say '$', could achieve this.
> >>
> >> Once again, the buzzwords are : simplicity, backward compatibility, and
> >> flexibility.
> >>
> >> Of course, having said all that, Russell's comments regarding the
> >> OnSetNewName event suggest that this capability is (almost ??)
implemented
> >> anyway. I have not used this feature.
> >>
> >> -- James Turner
> >> www.skaro.net
> >>
> >> PS
> >> I agree that the ability to keep old versions of files within an
archive
> RP> is
> >> desirable. I have already included this feature in code I am currently
> >> working on for a general purpose archive interface that can work with
zip
> >> and other archive types.
> >>
> >>
> >>
>
>
>
>
>
> --
> Regards,
> Alistair+
>
>
>
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