What is the idiomatic way to read urls with a file scheme as filenames for ReadFile?

Is there an idiomatic way to read a file from the system, starting from the url (file scheme) and not the path?

I tried this first:

fileUrlStr := "file:///path/to/file.json"
jsonBuffer, _ := ioutil.ReadFile(fileUrlStr)

      

        
        
        
      

    

This is my current (mostly working version), but I am concerned that there are some bugs that I am missing, so I hope there is a more tried and true way to do it:

fileUrlStr := "file:///path/to/file.json"
fileUrl, _ := url.Parse(fileUrlStr)
jsonBuffer, _ := ioutil.ReadFile(fileUrl.Path)

      

        
        
        
      

    

(Bonus if I can support both file:///Users/jdoe/temp.json

, and file:///c:/WINDOWS/clock.json

without adding code paths for them)