package pq import ( "fmt" nurl "net/url" "sort" "strings" ) // ParseURL no longer needs to be used by clients of this library since supplying a URL as a // connection string to sql.Open() is now supported: // // sql.Open("postgres", "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full") // // It remains exported here for backwards-compatibility. // // ParseURL converts a url to a connection string for driver.Open. // Example: // // "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full" // // converts to: // // "user=bob password=secret host=1.2.3.4 port=5432 dbname=mydb sslmode=verify-full" // // A minimal example: // // "postgres://" // // This will be blank, causing driver.Open to use all of the defaults func ParseURL(url string) (string, error) { u, err := nurl.Parse(url) if err != nil { return "", err } if u.Scheme != "postgres" && u.Scheme != "postgresql" { return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme) } var kvs []string escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`) accrue := func(k, v string) { if v != "" { kvs = append(kvs, k+"="+escaper.Replace(v)) } } if u.User != nil { v := u.User.Username() accrue("user", v) v, _ = u.User.Password() accrue("password", v) } i := strings.Index(u.Host, ":") if i < 0 { accrue("host", u.Host) } else { accrue("host", u.Host[:i]) accrue("port", u.Host[i+1:]) } if u.Path != "" { accrue("dbname", u.Path[1:]) } q := u.Query() for k := range q { accrue(k, q.Get(k)) } sort.Strings(kvs) // Makes testing easier (not a performance concern) return strings.Join(kvs, " "), nil }