Luxoft (SW integrator interview) Python assignment

Task overview

Will be checked coding style and possibility of script extension

Task description

Write class which will handle 7zip and zip files. It should be able to accept single archive, list and folder of archives and should be able to unpack inner archives. Class should be able to handle properly archives separated into parts - i.e. multipart archives.

If any exception occur we should stop any further execution.

Script should contain main() function which can provide information and execution example i.e help info with examples.

Setup and execution

Prerequisites

You should have python installed on your machine in order to run this. I have used and tested this only on 3.9.7

Make sure you have appropriate version of diskutils python package installed in your system and keep pip updated using:

pip install --upgrade pip

or on Windows:

python -m pip install --upgrade pip

You should install all dependencies using pipenv by running

pipenv install

or manually running:

pip install patool pyunpack

Also make sure that appropriate (for *.7z and *.zip files) archive packages are installed in your system. For Ubuntu please use

sudo apt install p7zip-full zip

to install both.

Execution

Run this program as ordinary python application providing as a first argument destination path followed my archive(-s) to extract

Please run python main.py --help for more execution information

Example test runs

$ python main.py ./example/dest/ ./example/test_0/test.txt gives error that provided file is not archive

$ python main.py ./example/dest/ ./example/test_1 will unpack everything from archive to ./example/dest folder even inner archive

$ python main.py ./example/dest/ ./example/test_2 will be interrupted because of corrupted archive

$ python main.py ./example/dest/ ./example/test_3 will unpack multipart archive to target directory

$ python main.py ./example/dest/ ./example/test_4 will unpack with inner multipart archive to `./example/dest folder

Extending

You could easily add new type of archive by extending ArchiveAbstract class and implementing extensions decompress methods. You could use two existing implementations (Archive7Zip and ArchiveZip) as an example.

Limitations

Only 7Zip utility created multipart archive currently supported.