s0rg/crawley

package links

import "net/url"

const jsScheme = "javascript"

func cleanURL(base *url.URL, link string) (rv string, ok bool) {
    u, err := url.Parse(link)
    if err != nil {
        return
    }

    if u.Host == "" {
        if u = base.ResolveReference(u); u.Host == "" {
            return
        }
    }

    switch u.Scheme {
    case jsScheme:
        return
    case "":
        u.Scheme = base.Scheme
    }

    if u.Path == "" {
        u.Path = "/"
    }

    u.Fragment = ""

    return u.String(), true
}