can't open split RAR when all parts not exist

dindog · Post by *dindog » 2013-10-08, 03:53 UTC

TC 8.5beta4
Say there are split RAR archive xxx.part1; xxx.part2;.... TC can't open any of them unless every part is exist, but WinRAR can open the partial file and even decompress some of the compete file with the existed parts.

Can TC do that too? Very useful, you don't need to download all of the split part to verify is is a fake one

Post by *white » 2013-10-08, 13:29 UTC

Please try latest beta.

Have you seen the following topic?
http://ghisler.ch/board/viewtopic.php?t=38202

dindog · Post by *dindog » 2013-10-09, 03:08 UTC

8.50b5 is just the same.
I make a multi-part archive by WinRAR 4.11, it's an archive of TC 8.50b5 installer split into 512KB each part.

There are 12 parts:
tc850x32_64_b5.part01.rar
tc850x32_64_b5.part02.rar
tc850x32_64_b5.part03.rar
....
tc850x32_64_b5.part12.rar

after delete part02.rar, TC can't open tc850x32_64_b5.part01.rar, but WinRAR is fine:
Image: http://i.imgur.com/Bu5QCD9.jpg

dindog · Post by *dindog » 2013-10-09, 03:14 UTC

for the record... TC 8.0 is also fine.
http://i.imgur.com/8C1zNMe.jpg

Post by *ghisler(Author) » 2013-10-09, 14:29 UTC

This is a limitation of unrar.dll (used so I can support RAR5): It can only show the contents of the multi-part archive from part 1 until the first missing part.

dindog · Post by *dindog » 2013-10-09, 16:33 UTC

ghisler(Author) wrote:This is a limitation of unrar.dll (used so I can support RAR5): It can only show the contents of the multi-part archive from part 1 until the first missing part.

No, that is how TC 8.0 did, and I think it's fine. But in the latest beta aka, 8.50b5, opening a multi volume RAR will prompt dialogue as long as there is any part missing.

TW · Post by *TW » 2013-10-09, 20:34 UTC

i think too this is very annoying.

but it seems, there's not much ghisler(Author) can do about it.

maybe we should ask mr. roshal...

dindog · Post by *dindog » 2013-10-10, 13:01 UTC

TW wrote:i think too this is very annoying.

but it seems, there's not much ghisler(Author) can do about it.

maybe we should ask mr. roshal...

8.0: fine with partial volumes
8.50b5: can't open any multi-vloume RAR unless you provide all parts

It looks like a bug to me

TW · Post by *TW » 2013-10-10, 14:57 UTC

no, i don't think so.

8.0x uses old unrar.dll, 8.5 the new one for rar5 support, as mentioned above.
ans that new unrar.dll has those limitations.

the only thing mr. ghisler could do is check whether the archive is old rar v2.9 format and then use his own code again in TC 8.5
but i guess it won't take very long and old rar v2.9 format will disappear, so this won't make much sense.

anyway, this is my understanding, but i might be totally wrong.
actually, i hope i'm wrong in this case.

Horst.Epp · Post by *Horst.Epp » 2013-10-10, 16:09 UTC

dindog wrote:
TW wrote:i think too this is very annoying.

but it seems, there's not much ghisler(Author) can do about it.

maybe we should ask mr. roshal...
8.0: fine with partial volumes
8.50b5: can't open any multi-vloume RAR unless you provide all parts

It looks like a bug to me

So you didn't read or understand Christians explanation ?
Its a limit of the new unrar.dll which has to be used for rar5 support.
So its not a bug !