[delphizip] Re: Handling CDRW packet drives
- From: "Russell Peters" <russellpeters@xxxxxxxxxxx>
- To: <delphizip@xxxxxxxxxxxxx>
- Date: Tue, 3 Dec 2002 07:32:39 +1100
I think we need to create a function to return whether a 'span' is going to
be multiple files or multiple disks (perhaps even adding an external flag)
as there are multiple places where it checks disk type to select it's
behavour.
We need to integrate the test for (packet) writable CDrom and allow for
changes with new media types/behavours.
I would also like to be able set 'MaxSpanSize' to produce multiple files.
Also affected is 'List' as it has know span type to expect.
I half thought we could have a new event
'OnSpanName(fileVol,name,number,IsChanged)' so the user can override with
whatever naming scheme they want to use.
The bug I found in ZipMaster's DiskFreeAndSize is also in ZipBuilder!
both GetDiskFreeSpace and GetDiskFreeSpaceEx return true on success.
Russell Peters
http://www.users.bigpond.com/russellpeters/delphizip.html
----- Original Message -----
From: "Roger Aelbrecht" <Roger.Aelbrecht@xxxxxxxxxx>
To: <delphizip@xxxxxxxxxxxxx>
Sent: Tuesday, December 03, 2002 4:35 AM
Subject: [delphizip] Re: Handling CDRW packet drives
>
> ----- Original Message -----
> From: "James Turner" <james.d.h.turner@xxxxxxxxxxxx>
> To: <delphizip@xxxxxxxxxxxxx>
> Sent: Monday, December 02, 2002 12:42 PM
> Subject: [delphizip] Re: Handling CDRW packet drives
>
>
> >
> > Having considered the problem a little further, I think that my
suggestion
> > of creating a function to return DRIVE_REMOVABLE for CDRW (packet)
drives
> > may be an oversimplification. I imagine there may be issues with
> formatting.
> > Therefore, with such drives, erase rather than format would probably
have
> to
> > be used.
> >
> > On a different subject, some time ago I wrote some code to create a
> spanned
> > archive from a single zip file (though I don't use it yet). In my
version,
> I
> > decided that the central directory should be contained entirely on the
> final
> > disk (i.e. start a new disk if there isn't enough room). Does ZipMaster
> > behave in the same way?
> >
> > -- James Turner
> > www.skaro.net
> >
> > PS
> > Perhaps when creating spanned archives, to avoid errors, at least one
> > cluster should always be left empty on each disk.
> >
> From the comments in the code of ZipBuilder I would say yes,
> ZipMaster is still similar there, an IIRC in the changed code I do the
> same test
>
> // Write this changed central header to disk
> // and make sure it fit's on one and the same disk.
>
>
> Roger Aelbrecht
> http://web.wanadoo.be/driehoeksw
>
>
>
>
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