Excluding specific pages from HTTPS in mod_rewrite - .htaccess

Question

I am trying to setup a codeigniter app to force HTTPS across all pages except one. However, I cannot get the rules to only redirect if the user is not on the page in question.
The page that should be excluded has the following URL's:
http://mydomain.com/kpi/reports/67
http://mydomain.com/kpi/reports/67/overview/2013-02-01/2013-02-28
http://mydomain.com/index.php?/kpi/reports/67
http://mydomain.com/index.php?/kpi/reports/67/overview/2013-02-01/2013-02-28
The number 67 and the dates can all change in the URL's above hence the user of regular expressions below.
I have tested the regular expressions and they seem to match the URL's fine. However, the htaccess just seems to redirect it to https:// anyway.
My .htaccess file is as follows...
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
#Disallow access to system dir
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Disallow access to application dir
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Force https when not on overview report
RewriteCond %{HTTPS} off
RewriteCond %{REQUEST_URI} !^/index\.php\?/kpi/reports/?([0-9]+)$
RewriteCond %{REQUEST_URI} !^/index\.php\?/kpi/reports/?([0-9]+)/overview/?([0-9]+)-?([0-9]+)-?([0-9]+)/?([0-9]+)-?([0-9]+)-?([0-9]+)$
RewriteCond %{REQUEST_URI} !^/kpi/reports/?([0-9]+)$
RewriteCond %{REQUEST_URI} !^/kpi/reports/?([0-9]+)/overview/?([0-9]+)-?([0-9]+)-?([0-9]+)/?([0-9]+)-?([0-9]+)-?([0-9]+)$
RewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI} [R=302,L]
#If not a valid file, redirect request through index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>
Any help would be greatly appreciated!

Answer 1

Maybe this will do what you need:
#Force https when not on overview report
RewriteCond %{HTTPS} off
RewriteCond %{QUERY_STRING} !kpi/reports/[0-9]+/?$ [NC]
RewriteCond %{QUERY_STRING} !kpi/reports/[0-9]+/overview/[^/]+/[^/]+/? [NC]
RewriteCond %{REQUEST_URI} !kpi/reports/[0-9]+/?$ [NC]
RewriteCond %{REQUEST_URI} !kpi/reports/[0-9]+/overview/[^/]+/[^/]+/? [NC]
RewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI} [R=302,L]
#If not a valid file, redirect request through index.php
Replace all lines between the comments.