Convert Apache rewrite rules to Nginx - apache

Question

How do I convert these rules from .htaccess (apache) to Nginx conf?
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^/]+)/$ $1.html
RewriteRule ^([^/]+)/([^/]+)/$ /$1-$2.html
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !(\.[a-zA-Z0-9]{1,5}|/)$
RewriteRule (.*)$ /$1/ [R=301,L]
I use these rules to rewrite requests like:
/someurl1/ => someurl.html (/company/ to /company.html
/someurl1/someurl2/ => someurl-someurl2.html (/projects/3/ to /projects-3.html)
I've already tried this (doesn't work):
if (!-e $request_filename) {
rewrite ^/([^/]+)/$ /$1.html;
rewrite ^/([^/]+)/([^/]+)/$ /$1-$2.html;
}
try_files $uri $uri/ =404;
Where am I wrong?

Answer 1

I have tested the following and it appears to work:
location / {
try_files $uri $uri/ #rewrite;
}
location #rewrite {
rewrite ^/([^/]+)/$ /$1.html last;
rewrite ^/([^/]+)/([^/]+)/$ /$1-$2.html last;
return 404;
}
The RewriteCond %{REQUEST_FILENAME} !-f test is actually accomplished by the try_files directive.
See this for details.