1package pflag
2
3import (
4 "fmt"
5 "strings"
6 "time"
7)
8
9// -- durationSlice Value
10type durationSliceValue struct {
11 value *[]time.Duration
12 changed bool
13}
14
15func newDurationSliceValue(val []time.Duration, p *[]time.Duration) *durationSliceValue {
16 dsv := new(durationSliceValue)
17 dsv.value = p
18 *dsv.value = val
19 return dsv
20}
21
22func (s *durationSliceValue) Set(val string) error {
23 ss := strings.Split(val, ",")
24 out := make([]time.Duration, len(ss))
25 for i, d := range ss {
26 var err error
27 out[i], err = time.ParseDuration(d)
28 if err != nil {
29 return err
30 }
31
32 }
33 if !s.changed {
34 *s.value = out
35 } else {
36 *s.value = append(*s.value, out...)
37 }
38 s.changed = true
39 return nil
40}
41
42func (s *durationSliceValue) Type() string {
43 return "durationSlice"
44}
45
46func (s *durationSliceValue) String() string {
47 out := make([]string, len(*s.value))
48 for i, d := range *s.value {
49 out[i] = fmt.Sprintf("%s", d)
50 }
51 return "[" + strings.Join(out, ",") + "]"
52}
53
54func (s *durationSliceValue) fromString(val string) (time.Duration, error) {
55 return time.ParseDuration(val)
56}
57
58func (s *durationSliceValue) toString(val time.Duration) string {
59 return fmt.Sprintf("%s", val)
60}
61
62func (s *durationSliceValue) Append(val string) error {
63 i, err := s.fromString(val)
64 if err != nil {
65 return err
66 }
67 *s.value = append(*s.value, i)
68 return nil
69}
70
71func (s *durationSliceValue) Replace(val []string) error {
72 out := make([]time.Duration, len(val))
73 for i, d := range val {
74 var err error
75 out[i], err = s.fromString(d)
76 if err != nil {
77 return err
78 }
79 }
80 *s.value = out
81 return nil
82}
83
84func (s *durationSliceValue) GetSlice() []string {
85 out := make([]string, len(*s.value))
86 for i, d := range *s.value {
87 out[i] = s.toString(d)
88 }
89 return out
90}
91
92func durationSliceConv(val string) (interface{}, error) {
93 val = strings.Trim(val, "[]")
94 // Empty string would cause a slice with one (empty) entry
95 if len(val) == 0 {
96 return []time.Duration{}, nil
97 }
98 ss := strings.Split(val, ",")
99 out := make([]time.Duration, len(ss))
100 for i, d := range ss {
101 var err error
102 out[i], err = time.ParseDuration(d)
103 if err != nil {
104 return nil, err
105 }
106
107 }
108 return out, nil
109}
110
111// GetDurationSlice returns the []time.Duration value of a flag with the given name
112func (f *FlagSet) GetDurationSlice(name string) ([]time.Duration, error) {
113 val, err := f.getFlagType(name, "durationSlice", durationSliceConv)
114 if err != nil {
115 return []time.Duration{}, err
116 }
117 return val.([]time.Duration), nil
118}
119
120// DurationSliceVar defines a durationSlice flag with specified name, default value, and usage string.
121// The argument p points to a []time.Duration variable in which to store the value of the flag.
122func (f *FlagSet) DurationSliceVar(p *[]time.Duration, name string, value []time.Duration, usage string) {
123 f.VarP(newDurationSliceValue(value, p), name, "", usage)
124}
125
126// DurationSliceVarP is like DurationSliceVar, but accepts a shorthand letter that can be used after a single dash.
127func (f *FlagSet) DurationSliceVarP(p *[]time.Duration, name, shorthand string, value []time.Duration, usage string) {
128 f.VarP(newDurationSliceValue(value, p), name, shorthand, usage)
129}
130
131// DurationSliceVar defines a duration[] flag with specified name, default value, and usage string.
132// The argument p points to a duration[] variable in which to store the value of the flag.
133func DurationSliceVar(p *[]time.Duration, name string, value []time.Duration, usage string) {
134 CommandLine.VarP(newDurationSliceValue(value, p), name, "", usage)
135}
136
137// DurationSliceVarP is like DurationSliceVar, but accepts a shorthand letter that can be used after a single dash.
138func DurationSliceVarP(p *[]time.Duration, name, shorthand string, value []time.Duration, usage string) {
139 CommandLine.VarP(newDurationSliceValue(value, p), name, shorthand, usage)
140}
141
142// DurationSlice defines a []time.Duration flag with specified name, default value, and usage string.
143// The return value is the address of a []time.Duration variable that stores the value of the flag.
144func (f *FlagSet) DurationSlice(name string, value []time.Duration, usage string) *[]time.Duration {
145 p := []time.Duration{}
146 f.DurationSliceVarP(&p, name, "", value, usage)
147 return &p
148}
149
150// DurationSliceP is like DurationSlice, but accepts a shorthand letter that can be used after a single dash.
151func (f *FlagSet) DurationSliceP(name, shorthand string, value []time.Duration, usage string) *[]time.Duration {
152 p := []time.Duration{}
153 f.DurationSliceVarP(&p, name, shorthand, value, usage)
154 return &p
155}
156
157// DurationSlice defines a []time.Duration flag with specified name, default value, and usage string.
158// The return value is the address of a []time.Duration variable that stores the value of the flag.
159func DurationSlice(name string, value []time.Duration, usage string) *[]time.Duration {
160 return CommandLine.DurationSliceP(name, "", value, usage)
161}
162
163// DurationSliceP is like DurationSlice, but accepts a shorthand letter that can be used after a single dash.
164func DurationSliceP(name, shorthand string, value []time.Duration, usage string) *[]time.Duration {
165 return CommandLine.DurationSliceP(name, shorthand, value, usage)
166}