1// Copyright 2015 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package gensupport
6
7import (
8	"net/url"
9
10	"google.golang.org/api/googleapi"
11)
12
13// URLParams is a simplified replacement for url.Values
14// that safely builds up URL parameters for encoding.
15type URLParams map[string][]string
16
17// Get returns the first value for the given key, or "".
18func (u URLParams) Get(key string) string {
19	vs := u[key]
20	if len(vs) == 0 {
21		return ""
22	}
23	return vs[0]
24}
25
26// Set sets the key to value.
27// It replaces any existing values.
28func (u URLParams) Set(key, value string) {
29	u[key] = []string{value}
30}
31
32// SetMulti sets the key to an array of values.
33// It replaces any existing values.
34// Note that values must not be modified after calling SetMulti
35// so the caller is responsible for making a copy if necessary.
36func (u URLParams) SetMulti(key string, values []string) {
37	u[key] = values
38}
39
40// Encode encodes the values into ``URL encoded'' form
41// ("bar=baz&foo=quux") sorted by key.
42func (u URLParams) Encode() string {
43	return url.Values(u).Encode()
44}
45
46// SetOptions sets the URL params and any additional call options.
47func SetOptions(u URLParams, opts ...googleapi.CallOption) {
48	for _, o := range opts {
49		u.Set(o.Get())
50	}
51}
52