zipped and tar files.

ant has asked for the wisdom of the Perl Monks concerning the following question:

Hi,

Once again I come looking for answers, so thanks in advance to replies.

I have file named UPatchCAAGAIAE_B.tar.Z, which I'm tring to use Archive::Zip on. I know that the code is correct as it unzips other files fine.

my $extract_file = $start_path . $env . "\\mrf" . $mrf_num . "\\$item"
+;     
            
      my $zip = Archive::Zip->new();  
      
      if($zip->read($extract_file) != AZ_OK) {
         die "Unable to decompress zip file '$extract_file'";
      }
[download]

However when I try to unzip this, it falls over, see error message below.

Any suggestions??

Thanks

\UPatchCAAGAIAE_B.tar.Z
format error: can't find EOCD signature
        Archive::Zip::Archive::_findEndOfCentralDirectory('Archive::Zi
+p::Archive=HASH(0x1b6bd68)', 'IO::File=GLOB(0x1b6be64)')
        Archive::Zip::Archive::readFromFileHandle('Archive::Zip::Archi
+ve=HASH(0x1b6bd68)', 'IO::File=GLOB(0x1b6be64)', 'R:\Rele
        Archive::Zip::Archive::read('Archive::Zip::Archive=HASH(0x1b6b
+d68)', 'R:\Relfsdfdment\pdsfsdhes\OdsfW\mrf15009\UPatc
[download]

Comment on zipped and tar files. Select or Download Code

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Re: zipped and tar files.
by Fletch (Bishop) on Oct 06, 2006 at 15:49 UTC

You're trying to use Archive::Zip which handles PKZip-format archives to extract files from a compress'd TAR file; use the right tool for the job instead.

Update: I'd say try Archive::Extract which tries to transparently do the right thing, but it doesn't appear as though that handles tar.Z files (even though treating them like tar.gz ones should work perfectly well).

[reply]

Re: zipped and tar files.
by grep (Monsignor) on Oct 06, 2006 at 17:09 UTC

Best Option:
If you have a newer version of the gzip (GNU zip) utility.

use Archive::Tar;

# using the cli utility gunzip 
# -c causes the file to be 'cat'ed
open F, "gunzip -c $filename |";

my $tar = Archive::Tar->new(*F);
[download]

Other Option:
Get the ncompress utility and compile. Then you can:

use Archive::Tar;

# using the cli utility compress 
# -c causes the file to be 'cat'ed
open F, "uncompress -c $filename |";
# or use 
# open F, "zcat -c $filename |";

my $tar = Archive::Tar->new(*F);
[download]

Archive::TarGzip does not seem to support .Z compressed files either.

grep

One dead unjugged rabbit fish later

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[d/l]
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Re: zipped and tar files.
by madbombX (Hermit) on Oct 06, 2006 at 16:44 UTC

File::Type

my $ft = File::Type->new();
my $file_type = $ft->checktype_filename($file);
[download]


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