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url.go
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url.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package flagext
import "net/url"
// URLValue is a url.URL that can be used as a flag.
type URLValue struct {
*url.URL
}
// String implements flag.Value
func (v URLValue) String() string {
if v.URL == nil {
return ""
}
return v.URL.String()
}
// Set implements flag.Value
func (v *URLValue) Set(s string) error {
u, err := url.Parse(s)
if err != nil {
return err
}
v.URL = u
return nil
}
// UnmarshalYAML implements yaml.Unmarshaler.
func (v *URLValue) UnmarshalYAML(unmarshal func(interface{}) error) error {
var s string
if err := unmarshal(&s); err != nil {
return err
}
// An empty string means no URL has been configured.
if s == "" {
v.URL = nil
return nil
}
return v.Set(s)
}
// MarshalYAML implements yaml.Marshaler.
func (v URLValue) MarshalYAML() (interface{}, error) {
if v.URL == nil {
return "", nil
}
// Mask out passwords when Marshal URLs back to YAML.
u := *v.URL
if u.User != nil {
if _, set := u.User.Password(); set {
u.User = url.UserPassword(u.User.Username(), "********")
}
}
return u.String(), nil
}