rewrite condition for directory along with file - apache

Question

Any one please help me.I am new to .htaccess
I want to check the following condition
RewriteCond : IF !index.html AND !app/facebookapp/{[a-zA-Z0-9-/]}.html
RewriteRule : .....
My code is
RewriteCond %{REQUEST_URI} !index\.html
RewriteCond %{REQUEST_URI} app/facebookapp/^([a-zA-Z0-9-/]+).html$
RewriteRule ......
its not working
And one more question
if the request url is header.html
RewriteCond %{REQUEST_URI} header.html$
RewriteRule ^([a-zA-Z0-9-/]+).html$ position.php?position=$1 [L]
$l will return header.
if the request url is app/facebookapp/header.html
we write the same above condition $l will return app/facebookapp/header.my question is how to get only the filename ??
thanks

Answer 1

Part 1:
Looks to me like you've got the ^ character in the wrong place. In regex syntax, that denotes the beginning of the text but you've got some text before it. You could put it at the front of the thing, but I think in this case you could just get rid of it. Try this:
RewriteCond %{REQUEST_URI} !index\.html
RewriteCond %{REQUEST_URI} app/facebookapp/([a-zA-Z0-9-/]+).html$
RewriteRule ......
Part 2:
You'll need two matching groups, and to only use the second one in the right-hand side. The first one includes / as a valid character, and the second one does not. Let me know if this works better:
RewriteCond %{REQUEST_URI} header.html$
RewriteRule ^([a-zA-Z0-9-/]+)/?([a-zA-Z0-9-]+).html$ position.php?position=$2 [L]