1package pflag
2
3import (
4 "fmt"
5 "strconv"
6 "strings"
7)
8
9// -- uintSlice Value
10type uintSliceValue struct {
11 value *[]uint
12 changed bool
13}
14
15func newUintSliceValue(val []uint, p *[]uint) *uintSliceValue {
16 uisv := new(uintSliceValue)
17 uisv.value = p
18 *uisv.value = val
19 return uisv
20}
21
22func (s *uintSliceValue) Set(val string) error {
23 ss := strings.Split(val, ",")
24 out := make([]uint, len(ss))
25 for i, d := range ss {
26 u, err := strconv.ParseUint(d, 10, 0)
27 if err != nil {
28 return err
29 }
30 out[i] = uint(u)
31 }
32 if !s.changed {
33 *s.value = out
34 } else {
35 *s.value = append(*s.value, out...)
36 }
37 s.changed = true
38 return nil
39}
40
41func (s *uintSliceValue) Type() string {
42 return "uintSlice"
43}
44
45func (s *uintSliceValue) String() string {
46 out := make([]string, len(*s.value))
47 for i, d := range *s.value {
48 out[i] = fmt.Sprintf("%d", d)
49 }
50 return "[" + strings.Join(out, ",") + "]"
51}
52
53func uintSliceConv(val string) (interface{}, error) {
54 val = strings.Trim(val, "[]")
55 // Empty string would cause a slice with one (empty) entry
56 if len(val) == 0 {
57 return []uint{}, nil
58 }
59 ss := strings.Split(val, ",")
60 out := make([]uint, len(ss))
61 for i, d := range ss {
62 u, err := strconv.ParseUint(d, 10, 0)
63 if err != nil {
64 return nil, err
65 }
66 out[i] = uint(u)
67 }
68 return out, nil
69}
70
71// GetUintSlice returns the []uint value of a flag with the given name.
72func (f *FlagSet) GetUintSlice(name string) ([]uint, error) {
73 val, err := f.getFlagType(name, "uintSlice", uintSliceConv)
74 if err != nil {
75 return []uint{}, err
76 }
77 return val.([]uint), nil
78}
79
80// UintSliceVar defines a uintSlice flag with specified name, default value, and usage string.
81// The argument p points to a []uint variable in which to store the value of the flag.
82func (f *FlagSet) UintSliceVar(p *[]uint, name string, value []uint, usage string) {
83 f.VarP(newUintSliceValue(value, p), name, "", usage)
84}
85
86// UintSliceVarP is like UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
87func (f *FlagSet) UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
88 f.VarP(newUintSliceValue(value, p), name, shorthand, usage)
89}
90
91// UintSliceVar defines a uint[] flag with specified name, default value, and usage string.
92// The argument p points to a uint[] variable in which to store the value of the flag.
93func UintSliceVar(p *[]uint, name string, value []uint, usage string) {
94 CommandLine.VarP(newUintSliceValue(value, p), name, "", usage)
95}
96
97// UintSliceVarP is like the UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
98func UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
99 CommandLine.VarP(newUintSliceValue(value, p), name, shorthand, usage)
100}
101
102// UintSlice defines a []uint flag with specified name, default value, and usage string.
103// The return value is the address of a []uint variable that stores the value of the flag.
104func (f *FlagSet) UintSlice(name string, value []uint, usage string) *[]uint {
105 p := []uint{}
106 f.UintSliceVarP(&p, name, "", value, usage)
107 return &p
108}
109
110// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
111func (f *FlagSet) UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
112 p := []uint{}
113 f.UintSliceVarP(&p, name, shorthand, value, usage)
114 return &p
115}
116
117// UintSlice defines a []uint flag with specified name, default value, and usage string.
118// The return value is the address of a []uint variable that stores the value of the flag.
119func UintSlice(name string, value []uint, usage string) *[]uint {
120 return CommandLine.UintSliceP(name, "", value, usage)
121}
122
123// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
124func UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
125 return CommandLine.UintSliceP(name, shorthand, value, usage)
126}