正则表达式排除文件模式

Question

I have the following regex which I want to ignore sass partials:

At the moment it looks like this:

  match /app\/stylesheets\/(?:.+\/)?[^_].+\.s[ca]ss/ do
    sass
  end

Example file paths I want to parse are:

/app/stylesheets/nonpartial.scss
/app/stylesheets/folder/anothernonpartial.scss

And examples of the partials I want to ignore are

/app/stylesheets/_partial.scss                   #this is ignored
/app/stylesheets/partials/_anotherpartial.scss   #this gets a match

The partials are not getting picked up by the regex, can anyone suggest a better one?

Answer 1

/app\/stylesheets(\/(\w+?))*\/(?!_)(\w+?)\.s[ca]ss/

This RegEx will match a file in /app/stylesheets in an arbitrary number of subdiretories whereas the filename must not begin with an underscore.

This RegEx uses Look-Arounds .