Support ZIP in BZip2 and PPMd



  • An immediate wish to PA after seeing Winzxx 10 beta is out. It starts supporting ZIP in BZip2 and PPMd format. Hope PA could support soon. 😃



  • Man! You’re fast! lol



  • @Ricco:

    supporting ZIP in BZip2 and PPMd format. Hope PA could support soon. 😃

    You mean it supports BZip2 and PPMD in a Zip file!
    However, other Zip utilities (including older Versions of WZ) won’t understand these “zip” files. This is going to create all sorts of problems. :mad:

    Why couldn’t they use new filetypes e.g.

    “ziz” for Zip/BZip2 ( or even Bz2 if is actually compatible 😃 ) and “zid” for Zip/PPMD

    then everything would be simple and straightforward :rolleyes:

    Just imagine how many questions to support - Your “NNN” cannot read this Zip file I just received/downloaded.


  • conexware

    @TBGBe:

    You mean it supports BZip2 and PPMD in a Zip file!
    However, other Zip utilities (including older Versions of WZ) won’t understand these “zip” files. This is going to create all sorts of problems. :mad:

    Why couldn’t they use new filetypes e.g.

    “ziz” for Zip/BZip2 ( or even Bz2 if is actually compatible 😃 ) and “zid” for Zip/PPMD

    then everything would be simple and straightforward :rolleyes:

    Just imagine how many questions to support - Your “NNN” cannot read this Zip file I just received/downloaded.

    indeed, butchering of zip format is not good for anyone, even if this is an official zip standard. It makes 100’s of million computers unable to read certain zip files.

    thats why we support open 7zip format.



  • Yes. But just like Deflate64 it would eventually be implemented everywhere (at least extraction). Therefore, PA should support it, or maybe not in a near future.

    Just like Winzxx 8.1 could extract Deflate64 ZIP, Winzxx 9.0 could extract BZip2-powered ZIP file.



  • BZIP2 compression method is part of the PKZIP standard, you can find it on http://www.pkware.com. There are some more archivers on the market with BZ2 support for ZIP files.


  • conexware

    @jowood:

    BZIP2 compression method is part of the PKZIP standard, you can find it on http://www.pkware.com. There are some more archivers on the market with BZ2 support for ZIP files.

    it makes no difference that Pkware created this standard 2-3 years ago, it is still very much wrong.



  • @Ricco:

    Yes. But just like Deflate64 it would eventually be implemented everywhere (at least extraction). Therefore, PA should support it, or maybe not in a near future.

    Just like Winzxx 8.1 could extract Deflate64 ZIP, Winzxx 9.0 could extract BZip2-powered ZIP file.

    Sorry, but I think you are missing the point.
    When Deflate64 was introduced, the availability of internet/download sites was not the same as now.
    Since then “zip” format has become a “de-facto” standard. Every compression utility supports zip files - even Windows XP. WinZip was also the ‘control/standard’.
    If a zip file could be created/read by WinZip then it was utility ‘XXX’ that was broken.

    The whole/only advantage of Zip compression was this compatibilty. Lose that and Zip compression is just a joke. To suddenly create ‘different’ zip formats makes zip worthless.
    There is no longer a reason to prefer zip over Rar, Ace, Sqx etc (pick anything you like).



  • Thanks for pointing out the missing point. Anyway, you think BZip2 and PPMd shouldn’t be supported in PA? (both Create and Extract)

    If not supporting Creation, I think at least Extraction is needed. (Yet enhanced the compatibility of PA to ZIP files too)



  • @spwolf:

    it makes no difference that Pkware created this standard 2-3 years ago, it is still very much wrong.

    Deflate64 is more jokingly. Just very very slight enhancement made to the compression ratio but completely ruined the compatibility.



  • @Ricco:

    Thanks for pointing out the missing point. Anyway, you think BZip2 and PPMd shouldn’t be supported in PA? (both Create and Extract)

    If not supporting Creation, I think at least Extraction is needed. (Yet enhanced the compatibility of PA to ZIP files too)

    PA does support Bzip2 and PPMD.
    Bzip2 in Bz2 files.
    PPMD in 7z files.
    @Ricco:

    Deflate64 is more jokingly. Just very very slight enhancement made to the compression ratio but completely ruined the compatibility.

    Yes, but that is not a justification for ruining compatibility yet again.



  • @TBGBe:

    PA does support Bzip2 and PPMD.
    Bzip2 in Bz2 files.
    PPMD in 7z files.

    I mean in ZIP profile… not in BZip2 and 7-Zip.



  • @spwolf:

    it makes no difference that Pkware created this standard 2-3 years ago, it is still very much wrong.

    PKWARE is the owner of the format. In the past you were proud of being one of the first supporter for ZIP64. Same for AES. It is still wrong too? So why not walk at the front and support BZ2 compression?

    I think the point is, that you are depending on what Innermedia is doing. If Innermedia decides to support the new compression formats, you can support it too. If not…



  • @Ricco:

    I mean in ZIP profile… not in BZip2 and 7-Zip.

    I know - sorry I forgot to include a smiley.

    @jowood:

    PKWARE is the owner of the format.

    BZIP2 compression method is part of the PKZIP standard, you can find it on http://www.pkware.com.

    I am not sure - was the ZIP format ever extended again to include PPMD as well?



  • @TBGBe:

    I am not sure - was the ZIP format ever extended again to include PPMD as well?

    Winzip Computing extended the format again, probably without permission from PKWARE. I’m curious how the story continues.



  • @jowood:

    Winzip Computing extended the format again, probably without permission from PKWARE. I’m curious how the story continues.

    Agree. This is the first time I found Winzip Computing supports something beyond the PKWARE ZIP format…



  • I have checked the formats of win***'s znew zip formats and they all open in pa with no problem you can even extract them to any directory you want. ppmd zip verion just beat powerarchive to the crunch on zips but everything else failed to beat pa they matched it.

    adding ppmd would be good but the rest a fast we have it already.



  • i support this wish.



  • @TBGBe:

    was the ZIP format ever extended again to include PPMD as well?

    No

    Bzip2 is bad
    PPMD is worse

    Basically, if I receive a Zip file, I no longer “know” what format it is.
    Might as well give every archive file the extension “bin” and let each utility/anti-virus decode contents as appropriate.



  • for me at least, PA cannot extract files from these new zip created by winzip 10. does the latest PA 9.5 beta 5 fix this? or is it planned?


 

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