How to get filename without extension from file path in Ruby

Question

How can I get the filename from a file path in Ruby?

For example if I have a path of \"C:\\projects\\blah.dll\" and I just want the \"blah\".

Is

Answer 1

Jonathon's answer is better, but to let you know somelist[-1] is one of the LastIndexOf notations available.

As krusty.ar mentioned somelist.last apparently is too.

irb(main):003:0* f = 'C:\\path\\file.txt'
irb(main):007:0> f.split('\\')
=> ["C:", "path", "file.txt"]
irb(main):008:0> f.split('\\')[-1]
=> "file.txt"

Answer 2

If you have access to ENV variables, scan combined with this little regex (which finds the last but one word, a dot, then the last word of the string) will put the file's name into 'filename':

filename = ENV['SCRIPT_NAME'].scan(/\w+\.\w+$/)

Obviously, you can use scan and the regex on any path name that includes the filename, and __FILE__ is the obvious choice:

__FILE__.scan(/\w+\.\w+$/)

Answer 3

You can get directory path to current script with:

File.dirname __FILE__