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 (s *uintSliceValue) fromString(val string) (uint, error) {
54 t, err := strconv.ParseUint(val, 10, 0)
55 if err != nil {
56 return 0, err
57 }
58 return uint(t), nil
59}
60
61func (s *uintSliceValue) toString(val uint) string {
62 return fmt.Sprintf("%d", val)
63}
64
65func (s *uintSliceValue) Append(val string) error {
66 i, err := s.fromString(val)
67 if err != nil {
68 return err
69 }
70 *s.value = append(*s.value, i)
71 return nil
72}
73
74func (s *uintSliceValue) Replace(val []string) error {
75 out := make([]uint, len(val))
76 for i, d := range val {
77 var err error
78 out[i], err = s.fromString(d)
79 if err != nil {
80 return err
81 }
82 }
83 *s.value = out
84 return nil
85}
86
87func (s *uintSliceValue) GetSlice() []string {
88 out := make([]string, len(*s.value))
89 for i, d := range *s.value {
90 out[i] = s.toString(d)
91 }
92 return out
93}
94
95func uintSliceConv(val string) (interface{}, error) {
96 val = strings.Trim(val, "[]")
97 // Empty string would cause a slice with one (empty) entry
98 if len(val) == 0 {
99 return []uint{}, nil
100 }
101 ss := strings.Split(val, ",")
102 out := make([]uint, len(ss))
103 for i, d := range ss {
104 u, err := strconv.ParseUint(d, 10, 0)
105 if err != nil {
106 return nil, err
107 }
108 out[i] = uint(u)
109 }
110 return out, nil
111}
112
113// GetUintSlice returns the []uint value of a flag with the given name.
114func (f *FlagSet) GetUintSlice(name string) ([]uint, error) {
115 val, err := f.getFlagType(name, "uintSlice", uintSliceConv)
116 if err != nil {
117 return []uint{}, err
118 }
119 return val.([]uint), nil
120}
121
122// UintSliceVar defines a uintSlice flag with specified name, default value, and usage string.
123// The argument p points to a []uint variable in which to store the value of the flag.
124func (f *FlagSet) UintSliceVar(p *[]uint, name string, value []uint, usage string) {
125 f.VarP(newUintSliceValue(value, p), name, "", usage)
126}
127
128// UintSliceVarP is like UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
129func (f *FlagSet) UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
130 f.VarP(newUintSliceValue(value, p), name, shorthand, usage)
131}
132
133// UintSliceVar defines a uint[] flag with specified name, default value, and usage string.
134// The argument p points to a uint[] variable in which to store the value of the flag.
135func UintSliceVar(p *[]uint, name string, value []uint, usage string) {
136 CommandLine.VarP(newUintSliceValue(value, p), name, "", usage)
137}
138
139// UintSliceVarP is like the UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
140func UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
141 CommandLine.VarP(newUintSliceValue(value, p), name, shorthand, usage)
142}
143
144// UintSlice defines a []uint flag with specified name, default value, and usage string.
145// The return value is the address of a []uint variable that stores the value of the flag.
146func (f *FlagSet) UintSlice(name string, value []uint, usage string) *[]uint {
147 p := []uint{}
148 f.UintSliceVarP(&p, name, "", value, usage)
149 return &p
150}
151
152// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
153func (f *FlagSet) UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
154 p := []uint{}
155 f.UintSliceVarP(&p, name, shorthand, value, usage)
156 return &p
157}
158
159// UintSlice defines a []uint flag with specified name, default value, and usage string.
160// The return value is the address of a []uint variable that stores the value of the flag.
161func UintSlice(name string, value []uint, usage string) *[]uint {
162 return CommandLine.UintSliceP(name, "", value, usage)
163}
164
165// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
166func UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
167 return CommandLine.UintSliceP(name, shorthand, value, usage)
168}