How to change url path and have https:// instad of http? - .htaccess

Question

Im trying to change my url path from:
example.com/path/index.php
or
http://example.com/path/index.php
to
https://example.com/
-
and from
www.example.com/path/index.php
or
http://www.example.com/path/index.php
to
https://www.example.com/path/index.php
This is what I have so far, it works fine for the https:// part but not the changing my url path
.htaccess file
#First rewrite any request to the wrong domain to use the correct one (here www.)
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
#Now, rewrite to HTTPS:
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
#Change to / instead of /path/index.php (Doesn't work.)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ path/index.php?/$1 [L]

Answer 1

I can not comment yet so I ask it here:
Your question / requirement will end up with serving requests in 2 dommain with www and domain w/o www:
example.com/path/index.php
or
http://example.com/path/index.php
to
https://example.com/
which return to the landing page --- no rediction to www.example.com, is this right?
and from
www.example.com/path/index.php
or
http://www.example.com/path/index.php
to
https://www.example.com/path/index.php
simply to force https enabled?
If it's true, then your code below
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
is adding www to the host and not related to the requirement/question you post. Can you make your question clearer?