1 package pflag
2 3 import (
4 "fmt"
5 "strconv"
6 "strings"
7 )
8 9 // -- float64Slice Value
10 type float64SliceValue struct {
11 value *[]float64
12 changed bool
13 }
14 15 func newFloat64SliceValue(val []float64, p *[]float64) *float64SliceValue {
16 isv := new(float64SliceValue)
17 isv.value = p
18 *isv.value = val
19 return isv
20 }
21 22 func (s *float64SliceValue) Set(val string) error {
23 ss := strings.Split(val, ",")
24 out := make([]float64, len(ss))
25 for i, d := range ss {
26 var err error
27 out[i], err = strconv.ParseFloat(d, 64)
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 42 func (s *float64SliceValue) Type() string {
43 return "float64Slice"
44 }
45 46 func (s *float64SliceValue) String() string {
47 out := make([]string, len(*s.value))
48 for i, d := range *s.value {
49 out[i] = fmt.Sprintf("%f", d)
50 }
51 return "[" + strings.Join(out, ",") + "]"
52 }
53 54 func (s *float64SliceValue) fromString(val string) (float64, error) {
55 return strconv.ParseFloat(val, 64)
56 }
57 58 func (s *float64SliceValue) toString(val float64) string {
59 return fmt.Sprintf("%f", val)
60 }
61 62 func (s *float64SliceValue) Append(val string) error {
63 i, err := s.fromString(val)
64 if err != nil {
65 return err
66 }
67 *s.value = append(*s.value, i)
68 return nil
69 }
70 71 func (s *float64SliceValue) Replace(val []string) error {
72 out := make([]float64, len(val))
73 for i, d := range val {
74 var err error
75 out[i], err = s.fromString(d)
76 if err != nil {
77 return err
78 }
79 }
80 *s.value = out
81 return nil
82 }
83 84 func (s *float64SliceValue) GetSlice() []string {
85 out := make([]string, len(*s.value))
86 for i, d := range *s.value {
87 out[i] = s.toString(d)
88 }
89 return out
90 }
91 92 func float64SliceConv(val string) (interface{}, error) {
93 val = strings.Trim(val, "[]")
94 // Empty string would cause a slice with one (empty) entry
95 if len(val) == 0 {
96 return []float64{}, nil
97 }
98 ss := strings.Split(val, ",")
99 out := make([]float64, len(ss))
100 for i, d := range ss {
101 var err error
102 out[i], err = strconv.ParseFloat(d, 64)
103 if err != nil {
104 return nil, err
105 }
106 107 }
108 return out, nil
109 }
110 111 // GetFloat64Slice return the []float64 value of a flag with the given name
112 func (f *FlagSet) GetFloat64Slice(name string) ([]float64, error) {
113 val, err := f.getFlagType(name, "float64Slice", float64SliceConv)
114 if err != nil {
115 return []float64{}, err
116 }
117 return val.([]float64), nil
118 }
119 120 // Float64SliceVar defines a float64Slice flag with specified name, default value, and usage string.
121 // The argument p points to a []float64 variable in which to store the value of the flag.
122 func (f *FlagSet) Float64SliceVar(p *[]float64, name string, value []float64, usage string) {
123 f.VarP(newFloat64SliceValue(value, p), name, "", usage)
124 }
125 126 // Float64SliceVarP is like Float64SliceVar, but accepts a shorthand letter that can be used after a single dash.
127 func (f *FlagSet) Float64SliceVarP(p *[]float64, name, shorthand string, value []float64, usage string) {
128 f.VarP(newFloat64SliceValue(value, p), name, shorthand, usage)
129 }
130 131 // Float64SliceVar defines a float64[] flag with specified name, default value, and usage string.
132 // The argument p points to a float64[] variable in which to store the value of the flag.
133 func Float64SliceVar(p *[]float64, name string, value []float64, usage string) {
134 CommandLine.VarP(newFloat64SliceValue(value, p), name, "", usage)
135 }
136 137 // Float64SliceVarP is like Float64SliceVar, but accepts a shorthand letter that can be used after a single dash.
138 func Float64SliceVarP(p *[]float64, name, shorthand string, value []float64, usage string) {
139 CommandLine.VarP(newFloat64SliceValue(value, p), name, shorthand, usage)
140 }
141 142 // Float64Slice defines a []float64 flag with specified name, default value, and usage string.
143 // The return value is the address of a []float64 variable that stores the value of the flag.
144 func (f *FlagSet) Float64Slice(name string, value []float64, usage string) *[]float64 {
145 p := []float64{}
146 f.Float64SliceVarP(&p, name, "", value, usage)
147 return &p
148 }
149 150 // Float64SliceP is like Float64Slice, but accepts a shorthand letter that can be used after a single dash.
151 func (f *FlagSet) Float64SliceP(name, shorthand string, value []float64, usage string) *[]float64 {
152 p := []float64{}
153 f.Float64SliceVarP(&p, name, shorthand, value, usage)
154 return &p
155 }
156 157 // Float64Slice defines a []float64 flag with specified name, default value, and usage string.
158 // The return value is the address of a []float64 variable that stores the value of the flag.
159 func Float64Slice(name string, value []float64, usage string) *[]float64 {
160 return CommandLine.Float64SliceP(name, "", value, usage)
161 }
162 163 // Float64SliceP is like Float64Slice, but accepts a shorthand letter that can be used after a single dash.
164 func Float64SliceP(name, shorthand string, value []float64, usage string) *[]float64 {
165 return CommandLine.Float64SliceP(name, shorthand, value, usage)
166 }
167