cregexp--contrib .rb

def subdomain(options={})

end

def string(options={})
end

def name(options={})
end

REGEX TO ADD TO CREGEXP

Strings default: (case insensitive), options: i => case sensitive

string      #=> This returns regex for only string based (i.e String, example)
_string     #=> This returns regex for strings including those with underscores
op_string   #=> This returns regex for strings including all characters except space, tab or newline

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Subdomains  default: (case sensitive, lowecase), options: none

subdomain     #=> This returns regex for only string based (i.e subdain, example)
options: 
       hex #=> This returns regex for subdomain with numbers included (i.e suBd0m1n)
       num #=> This returns regex for subdomains with only numbers (This will overide and use numbers only subdomain)
       uline #=> This returns regex for subdomains including underscores
       dash #=> This returns regex for subdomains including dashs
       op   #=> This returns regex for subdomains including all options above except num

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Names  default: (case insensitive), options: i => case sensitive

name  #=> This returns regex for only string based 
options: 
       dash #=> This returns regex for only string based 
       uline #=> 

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Videos

http://en.wikipedia.org/wiki/Video_file_format

Other formats
http://en.wikipedia.org/wiki/List_of_file_formats