mikoim/steam-jp-finder

package sjf

import (
    "fmt"
    "net/http"
    "strconv"
    "strings"
)

// RootURI re-constructs URI without path from *http.Request.
func RootURI(r *http.Request) string {
    protocol := "http"
    host := r.Host
    if r.TLS != nil {
        protocol = "https"
    }
    return protocol + "://" + host
}

// URI re-constructs URI from *http.Request.
func URI(r *http.Request) string {
    return RootURI(r) + r.RequestURI
}

// SteamID extracts Steam ID from OpenID ID.
func SteamID(id string) (string, error) {
    p := strings.Split(id, "/")
    if len(p) != 6 {
        return "", fmt.Errorf("invalid id %q", id)
    }
    s := p[5]
    if _, err := strconv.ParseUint(p[5], 10, 64); err != nil {
        return "", fmt.Errorf("%q is not integer", s)
    }
    return s, nil
}