htaccess rewriterule ignore index.html - .htaccess

Question

I'm using CodeIgniter and .htaccess to rewrite the URLs but I want it to ignore index.html.
This is so we can upload an index.html at any time as this will be a temporary landing page. With a link through to the main site on the index.php.
This is what is currently in .htaccess and I have set the server's directory index to index.html index.php
RewriteEngine on
RewriteCond $1 !^(index\.html|index\.php|js|img|fonts|data|css|uploaded|mobile_devices|audioplayer|emails|robots\.txt|archive_blog)
RewriteRule ^(.*)$ /index.php/$1 [L]
Thanks for any help

Answer 1

that rather looks like you want to rewrite everything that does not really exist in your directory.
try this instead of your current RewriteCond:
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1

Answer 2

Instead of using RewriteCond to ignore the index.html file, you could instead restrict access to it directly through using the FilesMatch directive. FilesMatch accepts a regular expression which could filter based on file name (e.g., index.html) or any regular expression.
Blocking access to the index.html file
<FilesMatch "index\.html$">
Order allow,deny
</FilesMatch>
That would completely deny access to the index.html file. I will admit, that I do not know the negative effects this would have on search engine crawling.
To read more about the FilesMatch Directive see http://httpd.apache.org/docs/current/mod/core.html#filesmatch
As for the rest of the directories in that list you currently have, you could just lock down all directory access regardless of name. It would give you a little more coverage going forward.
Options -Indexes
To read more about the Options Directive see http://httpd.apache.org/docs/current/mod/core.html#options
In the end your new .htaccess file would look something like this:
# Protect specific files from access
<FilesMatch "index\.html$">
Order allow,deny
</FilesMatch>
# Hide directory listing for URL's mapping to a directory
Options -Indexes
# Follow all symbolic links in this directory
Options +FollowSymLinks
# General rewrite rules
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L,QSA]
</IfModule>

Answer 3

Why don't you use the built in environment function?
You could create a 'maintenance' environment and set the base controller to whatever you want. Then you would just need to edit the index.php file to specify the environment you want.