extra_files: A C++ repository from turing228

EXTRA files finder

EXTRA files finder is the application of the future that allows you to find all files duplicates and delete unnecessary copies!

Instruction of use
Quickstart
Used tecnhologies
Idea of the solution
Files description
Contributors
License

📖 Instruction of use

First screen is this. Tap on the folder icon at the left-upper conner and select directory!

Select it and click "choose".That will be the directory for finding duplicated files.

After fast scanning for getting all files-paths and clustering them by sizes, you can see in the real-time the result of the application work process. You can choose clusters at the left half of the screen or click "Stop" to temporarily stop the work process. Notice that you can see the progress bars and timings at the bottom of the application!

You can double-click on a cluster at the left side to open it and look at the right side files of that cluster. Now you can select some of them and delete (* check important) or open path/open file

Different sort modes are available. You can click on column header to sort clusters by values there. "##" means the amount of copies at this cluster, "Mem" means the one file's size of this cluster and "Extra" means how much can you free if you delete all copies except one (that is (count_files - 1) * one_file_size).

You can open path or even file if you want just by clicking the proper button!

Important if you want to be able to delete files, then uncomment the line 462 at mainwindow.cpp

$ //QFile(item->text(2)).remove();                // TODO: IS OFF TO DON'T DELETE SOMETHING IMPORTANT

Important app shows all interesting files that have analogs of the same size. It means sometimes it shows you files with NO COPIES. It's lifehack and I'm sure app should work so.

🚀 Quickstart

You have two options:

CMake-way building:

$ cmake -DCMAKE_BUILD_TYPE=Debug .
$ make

You are also free to write if you want, for example, -DCMAKE_BUILD_TYPE=RelWithDebInfo instead of -DCMAKE_BUILD_TYPE=Debug

QMake-way building:

$ qmake CONFIG+=debug -o Makefile extra_files_finder.pro
$ make

To run it just write in your terminal:

$ ./extra_files_finder

📋 Used technologies

QT framework - for UI application and multi-threading
C++ - as the language for a backend development

🎉 Idea of the solution

Ok, that is very easy to describe:

We cluster files by their sizes by the method clustering::cluster_by_size
Then we compare files of the same size by their hashes Sha3_256

📂 Files description

Code of the application:

main.cpp - file with function main
mainwindow.h, mainwindow.cpp - the code of the main application
clustering.cpp, clustering.h - for the first step in our idea
clusterWorker.cpp, clusterWorker.h - for the second step. It starts in an extra thread by mainwindow.cpp to don't disturb UI-thread

Also:

mainwindow.ui — XML-file with the description of the main window. Utility uic uses it for the building of the file ui-mainwindow.h, which includes to mainwindow.cpp. ui-files can be opened by QT Designer or QT Creator.
CMakeLists.txt — cmake's build-script.
extra_files_finder.pro — qmake's build-script.