Unix archive (*.a) packer plugin for Total Commander

[nmarci]

I would like to announce a plug-in for Total Commander which can extract the files from the GNU style Unix archives.
The plug-in is available under LGPL license.

[nmarci]

The plug-in is available at sourceforge under name ar-plugin.

[fenix_productions]

Link: http://ar-plugin.sourceforge.net/

[MVV]

Hi, nmarci, nice plugin. But I have an idea how to expand its functional:)

As I see this format is similar to standard .lib files format (it seems like MS uses it for their .lib files), and your archiver even shows .obj files inside of .lib and allow to extract them. Unfortunately it doesn't allow to extract object files from subfolders of .lib (i.e. when object file name contains slashes). I think you may fix it and tell about .lib support too in topic title. Also I think it would be great to show files with same names autorenamed (e.g. with appendix "(%d)" where %d is some number e.g. file index in AR header or file offset) so use can extract them from .lib files too (currently it shows many all files with same names but always extracts first of them).

Here a couple of standard .lib files so you may test them with your plugin:

MIME-Version: 1.0
Content-Type: application/octet-stream; name="lib_samples.7Z"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="lib_samples.7Z"
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nsgV85VMgmB7nPD11bTe3rWfZ/OF+55kmB/CR5HujHCvw3luRybIpNFB4s/OrlEcXl4m75XOKWvg
GFgfPWRcF9AjTfthoqAWWDguEZGEpFkRFOXVfujdzF7wHI1ESzybcq9qYVfUhkg1r4PkBGPRJ4fJ
gYsmY8x4TfJECNQ1+S6h2b1ZuceZYS5qjNOlRmGT3wy5XPFQ3RzawmDAU6hlKQL7UIIGqa2c175Y
TYWE2f3iAACBMweuD9V9wOlXJNP+s34viZK+vj0KsZCw8Rz0bvjgNMZGhvL6q2jOgmZOiVkBatRB
8P1ks1uhfqLY/IxRTXyZZJrPGUwzWqfFr5M88wWHSfb/r1gEFiTEnn1Tdqi6pt2Xx6/c/yTK8qxj
4W02VVVo7UzdvCcDdeEAABcGh7EBCXwABwsBAAEjAwEBBV0AEAAADICNCgGC7zi4AAA=

(save as .b64 and decode)

File pgobootrun.lib contains one object file in subfolder (there is some folder structure) and file framedyn.lib contains some files with same names.

[nmarci]

Hi, nmarci, nice plugin.

Thanks

I had some time time to look at one of your comments:

Also I think it would be great to show files with same names autorenamed (e.g. with appendix "(%d)" where %d is some number e.g. file index in AR header or file offset) so use can extract them from .lib files too (currently it shows many all files with same names but always extracts first of them).

I could reproduce the problem you mentioned. I could even create a simple test file which contains three files, each named "a". The contents of the files are different and even there is two files which has exactly the same size.

In the Packer plugin Interface Description 2.21, chapter ProcessFile() the following can be read:

When Total Commander first opens an archive, it scans all file names with OpenMode==PK_OM_LIST, so ReadHeader() is called in a loop with calling ProcessFile(...,PK_SKIP,...). When the user has selected some files and started to decompress them, Total Commander again calls ReadHeader() in a loop. For each file which is to be extracted, Total Commander calls ProcessFile() with Operation==PK_EXTRACT immediately after the ReadHeader() call for this file. If the file needs to be skipped, it calls it with Operation==PK_SKIP.

If TotalCommander 7.55a worked as described the plugin would work. However, TotalCommander stops at the first matching filename and tries to extract that file. I think this problem is to be solved in Total Commander.

Here is the bash script I used to generate my test.a file:

Code: Select all

#!/bin/sh
 
mkdir x
echo First one >x/a
ar q test.a x/a

echo Second one, a longer text >x/a
ar q test.a x/a

echo Third. >x/a
ar q test.a x/a

echo 4th, same size as second. >x/a
ar q test.a x/a

rm -f x/a
rm -r -f x

The test.a itself:

Code: Select all

MIME-Version: 1.0 (mime-construct 1.11)
Content-Disposition: attachment; filename=test.a
Content-Type: application/octet-stream; name=test.a
Content-Transfer-Encoding: base64

ITxhcmNoPgphLyAgICAgICAgICAgICAgMTI4NzM0NTI2NyAgMTAwMCAgMTAwMCAgMTAwNjQ0ICAx
MCAgICAgICAgYApGaXJzdCBvbmUKYS8gICAgICAgICAgICAgIDEyODczNDUyNjcgIDEwMDAgIDEw
MDAgIDEwMDY0NCAgMjYgICAgICAgIGAKU2Vjb25kIG9uZSwgYSBsb25nZXIgdGV4dAphLyAgICAg
ICAgICAgICAgMTI4NzM0NTI2NyAgMTAwMCAgMTAwMCAgMTAwNjQ0ICA3ICAgICAgICAgYApUaGly
ZC4KCmEvICAgICAgICAgICAgICAxMjg3MzQ1MjY3ICAxMDAwICAxMDAwICAxMDA2NDQgIDI2ICAg
ICAgICBgCjR0aCwgc2FtZSBzaXplIGFzIHNlY29uZC4K

And finally here comes what shall be visible inside the test.a:

Code: Select all

$ ar tv test.a
rw-r--r-- 1000/1000     10 Oct 17 21:54 2010 a
rw-r--r-- 1000/1000     26 Oct 17 21:54 2010 a
rw-r--r-- 1000/1000      7 Oct 17 21:54 2010 a
rw-r--r-- 1000/1000     26 Oct 17 21:54 2010 a

[nmarci]

I filed a bug report Packer plugin: more than one file with the same name for this problem.

[MVV]

I think you may use auto-rename feature until TC has such trouble with files with same names.

[Balderstrom]

I don't think TC supports same names in file lists except in SubDirBranch view -- and in those cases the full path of each file is unique even though the individual filename may be the same.

[ghisler(Author)]

Indeed TC currently recognizes files in packer plugins by name, so it's not a good idea to have multiple with the same name. You should consider to name them e.g. name, name(1), name(2) etc.

[Stepho]

Is there a 64-bit version of this plugin?
Thanks.

[ZoSTeR]

You can use Total7Zip for that.

[Stepho]

Thanks, that did exactly what I wanted.