Convert Apache Rewrite rules into Nginx rewrite rules

This job is easy if you know rewrite rules in php/unix (.htaccess) and on Nginx Webserver (config file). I simply need a apache rewrite rule translated for nginx webservers so that is working fine. The rule simply allow to use very seo proper urls like [login to view URL] Without the rule the url would look like: [login to view URL] There are 4 parts: 1. Forward non-www to www url for each URL 2. Forward proper url to the [login to view URL] file in background (note:the proper url will stay in browser) 3. Deactivate rewriting for some specific files like [login to view URL] 4. Also allow rule 2. for URLs that have only 1 keyword (../subfolder/keyword1) That's it. Thank you. Here is the apache rewrite rule from .htaccess: ------------------------------------------------------------------------------------------------------------------------------------ RewriteEngine On RewriteBase /subfolder/ RewriteCond %{HTTP_HOST} ^[login to view URL] RewriteRule (.*) [login to view URL]$1 [R=301,L] RewriteRule ^([^¸·{|}´`'"+*^¯¨¬\\/~]+)/([^¸·{|}´`'"+*^¯¨¬\\/~]+)$ $1/$2/ [NE] RewriteRule ^([^¸·{|}´`'"+*^¯¨¬\\/~]+)/([^¸·{|}´`'"+*^¯¨¬\\/~]+)/$ ../[login to view URL]$1&key2=$2 [NE] # Allow URLs with only 1 keyword RewriteCond %{REQUEST_URI} !^/subfolder/[login to view URL] RewriteCond %{REQUEST_URI} !^/subfolder/[login to view URL] RewriteCond %{REQUEST_URI} !^/subfolder/[login to view URL] RewriteCond %{REQUEST_URI} !^/subfolder/[login to view URL] RewriteRule ^([^¸·{|}´`'"+*^¯¨¬\\/~]+)$ $1/ [NE] RewriteRule ^([^¸·{|}´`'"+*^¯¨¬\\/~]+)/$ ../[login to view URL]$1 [NE] -----------------------------------------------------------------------------------------------------------------------------------------------