Description

In this stage, your program should allow a user to set their name and add the files they want to track. Store a username in config.txt.

Index.txt stores the files that were added to the index. Don't forget to store all the files of the version control system in the vcs directory. You should create this directory programmatically. It may look something like this:

.
├── vcs
│   ├── config.txt
│   └── index.txt
├── tracked_file.txt
└── untracked_file.txt

Objectives

You need to work on the following commands:

• config should allow the user to set their own name or output an already existing name. If a user wants to set a new name, the program must overwrite the old one.
• add should allow the user to set the name of a file that they want to track or output the names of tracked files. If the file does not exist, the program should inform a user that the file does not exist.

Examples

The greater-than symbol followed by a space (> ) represents the user input. Note that it's not part of the input.

Example 1: the config argument

Please, tell me who you are.

Example 2: the config John argument

The username is John.

Example 3: the config argument

The username is John.

Example 4: the config Max argument

The username is Max.

Example 5: the add argument.

Add a file to the index.

Example 6: the add file.txt arguments

The file 'file.txt' is tracked.

Example 7: the add argument

Tracked files:
file.txt

Example 8: the add new_file.txt argument

The file 'new_file.txt' is tracked.

Example 9: the add argument

Tracked files:
file.txt
new_file.txt

Example 10: the add not_exists_file.txt argument

Can't find 'not_exists_file.txt'.