1package pflag
2
3import (
4 "fmt"
5 "strconv"
6 "strings"
7)
8
9// -- intSlice Value
10type intSliceValue struct {
11 value *[]int
12 changed bool
13}
14
15func newIntSliceValue(val []int, p *[]int) *intSliceValue {
16 isv := new(intSliceValue)
17 isv.value = p
18 *isv.value = val
19 return isv
20}
21
22func (s *intSliceValue) Set(val string) error {
23 ss := strings.Split(val, ",")
24 out := make([]int, len(ss))
25 for i, d := range ss {
26 var err error
27 out[i], err = strconv.Atoi(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 *intSliceValue) Type() string {
43 return "intSlice"
44}
45
46func (s *intSliceValue) String() string {
47 out := make([]string, len(*s.value))
48 for i, d := range *s.value {
49 out[i] = fmt.Sprintf("%d", d)
50 }
51 return "[" + strings.Join(out, ",") + "]"
52}
53
54func intSliceConv(val string) (interface{}, error) {
55 val = strings.Trim(val, "[]")
56 // Empty string would cause a slice with one (empty) entry
57 if len(val) == 0 {
58 return []int{}, nil
59 }
60 ss := strings.Split(val, ",")
61 out := make([]int, len(ss))
62 for i, d := range ss {
63 var err error
64 out[i], err = strconv.Atoi(d)
65 if err != nil {
66 return nil, err
67 }
68
69 }
70 return out, nil
71}
72
73// GetIntSlice return the []int value of a flag with the given name
74func (f *FlagSet) GetIntSlice(name string) ([]int, error) {
75 val, err := f.getFlagType(name, "intSlice", intSliceConv)
76 if err != nil {
77 return []int{}, err
78 }
79 return val.([]int), nil
80}
81
82// IntSliceVar defines a intSlice flag with specified name, default value, and usage string.
83// The argument p points to a []int variable in which to store the value of the flag.
84func (f *FlagSet) IntSliceVar(p *[]int, name string, value []int, usage string) {
85 f.VarP(newIntSliceValue(value, p), name, "", usage)
86}
87
88// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
89func (f *FlagSet) IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
90 f.VarP(newIntSliceValue(value, p), name, shorthand, usage)
91}
92
93// IntSliceVar defines a int[] flag with specified name, default value, and usage string.
94// The argument p points to a int[] variable in which to store the value of the flag.
95func IntSliceVar(p *[]int, name string, value []int, usage string) {
96 CommandLine.VarP(newIntSliceValue(value, p), name, "", usage)
97}
98
99// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
100func IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
101 CommandLine.VarP(newIntSliceValue(value, p), name, shorthand, usage)
102}
103
104// IntSlice defines a []int flag with specified name, default value, and usage string.
105// The return value is the address of a []int variable that stores the value of the flag.
106func (f *FlagSet) IntSlice(name string, value []int, usage string) *[]int {
107 p := []int{}
108 f.IntSliceVarP(&p, name, "", value, usage)
109 return &p
110}
111
112// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
113func (f *FlagSet) IntSliceP(name, shorthand string, value []int, usage string) *[]int {
114 p := []int{}
115 f.IntSliceVarP(&p, name, shorthand, value, usage)
116 return &p
117}
118
119// IntSlice defines a []int flag with specified name, default value, and usage string.
120// The return value is the address of a []int variable that stores the value of the flag.
121func IntSlice(name string, value []int, usage string) *[]int {
122 return CommandLine.IntSliceP(name, "", value, usage)
123}
124
125// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
126func IntSliceP(name, shorthand string, value []int, usage string) *[]int {
127 return CommandLine.IntSliceP(name, shorthand, value, usage)
128}