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regexmongooseuri

Creating a regex for mongoose URI

I'm trying to figure out how to validate mongoose URIs with regex. My current regex is this:

^(mongodb:\/{2})(\w*?):{0,1}(\w*?)@{0,1}(\w+?):(\d+)\/(\w+?)

I need to be able to detect if a username and password is entered, i.e. 

mongodb:username:password@localhost:27107/mydatabasename

So I need these cases to be invalid:

mongodb://username:localhost:27107/adfaeadf
mongodb://username:@localhost:27107/adfaeadf
mongodb://:password@localhost:27107/adfaeadf

but have these cases be valid:

mongodb://:@localhost:27107/mydatabasename
mongodb://@localhost:27107/mydatabasename
mongodb://localhost:27107/mydatabasename
mongodb:username:password@localhost:27107/mydatabasename

Any help would be appreciated

Solution 
  • ^(mongodb:(?:\/{2})?)((\w+?):(\w+?)@|:?@?)(\w+?):(\d+)\/(\w+?)$

    http://regex101.com/r/mV2cR7/2 for the explanation

    For your last link, is there supposed to be "//" after "mongodb:"? The regex will match it either way however.