How to compress a tar file in a tar.gz without directory?

Question

I'm looking for a way to compress a tar file in a tar.gz without directory.

Today my code generate a TAR file without directory with "tarfile" library and arcname arguments but when I want to compress this TAR file in TAR.GZ I don't understand how to delete directory.

I have made many tests in the last 3 days.

My code :

Tarname = example.tar
ImageDirectory = C:\...
TarDirectory = C:\..

tar = tarfile.open(Tarname, "w")
tar.add(ImageDirectory,arcname=TarName)
tar.close()

targz = tarfile.open("example.tar.gz", "w:gz")
targz.add(TarDirectory, arcname=TarName)
targz.close()

I do not understand the question. What are you getting, and what is it that you want to get instead? Note that `arcname` is not referring to the name of the archive, but rather the name of the entry being added in the tar file. Why are you making `example.tar`, and then `example.tar.gz`? That will just make two different files. — Mark Adler, Jan 15 '14 at 15:46
Hello Mark, I try to group tif and txt files in a TAR file and then compress this one in a tar.gz file. For all files, I don't want to conserve the original directory. Am I understandable ? — syl3198045, Jan 16 '14 at 08:24
Finally I want a TARGZ\TAR\TIF directory but my files are not in the same directory that I use to work and I am forced to pass the files directory which stay in my final archives... — syl3198045, Jan 16 '14 at 08:30

score 4 · Answer 1 · edited May 10 '16 at 00:31

4

For individual file(s):

tar.add(file, arcname=os.path.basename(file))

for each file that you want to add. basename will strip the directory information.

Or, for a recursive directory:

def flatten(tarinfo):
    tarinfo.name = os.path.basename(tarinfo.name)
    return tarinfo

tar = tarfile.open("example.tar.gz", "w:gz")
tar.add("directory", filter=flatten)
tar.close()

edited May 10 '16 at 00:31

Charles

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answered Jan 16 '14 at 18:05

Mark Adler

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Thanks, basename don't works but for your second proposition what is "name" and could you precise when tarinfo is a function of tarfile library and when it's a variable (TarInfo and tarinfo for example) – syl3198045 Jan 17 '14 at 08:37
Did you `import os.path` for `basename`? – Mark Adler Jan 17 '14 at 08:39
You can read the [documentation](http://docs.python.org/2/library/tarfile.html) for `tarinfo` and `tarinfo.name`. – Mark Adler Jan 17 '14 at 08:40
filter don't exist in my python version :( – syl3198045 Jan 17 '14 at 09:50
What version do you have? – Mark Adler Jan 17 '14 at 14:37
I'm on 2.5 version and I must conserve it. – syl3198045 Jan 17 '14 at 14:54
2.5 has `os.path` and `basename`. So the first example I gave will work. You will just need to do the recursion through directories yourself instead of depending on `add` for that. Use `listdir` to list the contents of the directory, and iterate through that to `add` files. – Mark Adler Jan 17 '14 at 17:07
Hi ! Sorry but I don't understand, could you explain me with an example please ? – syl3198045 Jan 20 '14 at 09:18

score 0 · Answer 2 · answered Jan 15 '14 at 12:50

0

Try using the gzip module : Here is an example of how to use it :

import gzip
f_in = open('file.txt', 'rb')
f_out = gzip.open('file.txt.gz', 'wb')
f_out.writelines(f_in)
f_out.close()
f_in.close()

answered Jan 15 '14 at 12:50

Yes, I have ever tried before but same result. The directory is ever in final tar.gz. There is no arcname in gzip ? – syl3198045 Jan 15 '14 at 13:21
He's already using `"w:gz"` when writing the tar file, so he doesn't need the gzip module. – Mark Adler Jan 15 '14 at 15:42

How to compress a tar file in a tar.gz without directory?

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