[delphizip] Re: Windows 64 bit, file names > 256 characters.

  • From: RPeters <rpeters@xxxxxxxxxxxxx>
  • To: delphizip@xxxxxxxxxxxxx
  • Date: Fri, 02 Sep 2011 17:37:56 +1000

On 2/09/2011 5:32 PM, Patrick Kolla-ten Venne wrote:
> Strings in UTF8 will be the same length or longer. Never less length.
> Upgrading Delphi won't change a thing.
> As it has been said before, the issue is the zip header.
> James Turner wrote that the length field in the zip header has a size of
> one byte. Meaning you just can't store any longer names in there. Here,
> I am confused now. I've written my own native zip structure reader code
> (because for just listing contents and checking file size&  crc32,
> DelZip would be too much overhead), and my structure has FileNameLength
> as a Word (and that code works, so I doubt that's a bug ;) ). Which
> would allow longer filenames!
>
> So in my opinion, the limitation has to be elsewhere.
>
> Anyway, workarounds could be:
>
> If the user never uses the .zip himself, create an additional file with
> metadata. You don't pass wildcards but the full list of files to
> TZipMaster, right? So just add each single one with a different,
> shorter, name (hash of name plus random number without path or something
> like that) and have one additional file that relates this to real names,
> which you would use in extraction.
>
>> Will using UTF8 help. I am using Delphi 2007, Will upgrading help.
>> RegardsAllan Fernandes
>>
>> -----------
>> To unsubscribe from this list, send an empty e-mail
>> message to:
>>     delphizip-request@xxxxxxxxxxxxx
>> and put the word unsubscribe in the subject.
>
>
> -----------
> To unsubscribe from this list, send an empty e-mail
> message to:
>    delphizip-request@xxxxxxxxxxxxx
> and put the word unsubscribe in the subject.
It is not the zip format barrier (32 bits) that is being hit, it is the 
standard ms-dos MAX_PATH issue.
Russell
-----------
To unsubscribe from this list, send an empty e-mail 
message to:
  delphizip-request@xxxxxxxxxxxxx 
and put the word unsubscribe in the subject.

Other related posts:

  1. Home
  2. delphizip
  3. Archive
  4. 09-2011