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}
129