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package myurl
import (
"errors"
"net/url"
"strings"
)
type Url string
func (o Url) Url() string {
return string(o)
}
// FileExtension returns file extension of file name from this url.
// copied from https://elisegev.medium.com/get-a-file-extension-from-a-url-in-golang-5061d4a298a
func (o Url) FileExtension() (string, error) {
u, err := url.Parse(o.Url())
if err != nil {
return "", err
}
pos := strings.LastIndex(u.Path, ".")
if pos == -1 {
return "", errors.New("couldn't find a period to indicate a file extension")
}
return u.Path[pos+1 : len(u.Path)], nil
}
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