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 (s *intSliceValue) Append(val string) error {
55	i, err := strconv.Atoi(val)
56	if err != nil {
57		return err
58	}
59	*s.value = append(*s.value, i)
60	return nil
61}
62
63func (s *intSliceValue) Replace(val []string) error {
64	out := make([]int, len(val))
65	for i, d := range val {
66		var err error
67		out[i], err = strconv.Atoi(d)
68		if err != nil {
69			return err
70		}
71	}
72	*s.value = out
73	return nil
74}
75
76func (s *intSliceValue) GetSlice() []string {
77	out := make([]string, len(*s.value))
78	for i, d := range *s.value {
79		out[i] = strconv.Itoa(d)
80	}
81	return out
82}
83
84func intSliceConv(val string) (interface{}, error) {
85	val = strings.Trim(val, "[]")
86	// Empty string would cause a slice with one (empty) entry
87	if len(val) == 0 {
88		return []int{}, nil
89	}
90	ss := strings.Split(val, ",")
91	out := make([]int, len(ss))
92	for i, d := range ss {
93		var err error
94		out[i], err = strconv.Atoi(d)
95		if err != nil {
96			return nil, err
97		}
98
99	}
100	return out, nil
101}
102
103// GetIntSlice return the []int value of a flag with the given name
104func (f *FlagSet) GetIntSlice(name string) ([]int, error) {
105	val, err := f.getFlagType(name, "intSlice", intSliceConv)
106	if err != nil {
107		return []int{}, err
108	}
109	return val.([]int), nil
110}
111
112// IntSliceVar defines a intSlice flag with specified name, default value, and usage string.
113// The argument p points to a []int variable in which to store the value of the flag.
114func (f *FlagSet) IntSliceVar(p *[]int, name string, value []int, usage string) {
115	f.VarP(newIntSliceValue(value, p), name, "", usage)
116}
117
118// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
119func (f *FlagSet) IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
120	f.VarP(newIntSliceValue(value, p), name, shorthand, usage)
121}
122
123// IntSliceVar defines a int[] flag with specified name, default value, and usage string.
124// The argument p points to a int[] variable in which to store the value of the flag.
125func IntSliceVar(p *[]int, name string, value []int, usage string) {
126	CommandLine.VarP(newIntSliceValue(value, p), name, "", usage)
127}
128
129// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
130func IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
131	CommandLine.VarP(newIntSliceValue(value, p), name, shorthand, usage)
132}
133
134// IntSlice defines a []int flag with specified name, default value, and usage string.
135// The return value is the address of a []int variable that stores the value of the flag.
136func (f *FlagSet) IntSlice(name string, value []int, usage string) *[]int {
137	p := []int{}
138	f.IntSliceVarP(&p, name, "", value, usage)
139	return &p
140}
141
142// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
143func (f *FlagSet) IntSliceP(name, shorthand string, value []int, usage string) *[]int {
144	p := []int{}
145	f.IntSliceVarP(&p, name, shorthand, value, usage)
146	return &p
147}
148
149// IntSlice defines a []int flag with specified name, default value, and usage string.
150// The return value is the address of a []int variable that stores the value of the flag.
151func IntSlice(name string, value []int, usage string) *[]int {
152	return CommandLine.IntSliceP(name, "", value, usage)
153}
154
155// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
156func IntSliceP(name, shorthand string, value []int, usage string) *[]int {
157	return CommandLine.IntSliceP(name, shorthand, value, usage)
158}
159