1package pflag
2
3import (
4	"fmt"
5	"strconv"
6	"strings"
7)
8
9// -- float64Slice Value
10type float64SliceValue struct {
11	value   *[]float64
12	changed bool
13}
14
15func newFloat64SliceValue(val []float64, p *[]float64) *float64SliceValue {
16	isv := new(float64SliceValue)
17	isv.value = p
18	*isv.value = val
19	return isv
20}
21
22func (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
42func (s *float64SliceValue) Type() string {
43	return "float64Slice"
44}
45
46func (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
54func (s *float64SliceValue) fromString(val string) (float64, error) {
55	return strconv.ParseFloat(val, 64)
56}
57
58func (s *float64SliceValue) toString(val float64) string {
59	return fmt.Sprintf("%f", val)
60}
61
62func (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
71func (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
84func (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
92func 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
112func (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.
122func (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.
127func (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.
133func 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.
138func 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.
144func (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.
151func (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.
159func 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.
164func Float64SliceP(name, shorthand string, value []float64, usage string) *[]float64 {
165	return CommandLine.Float64SliceP(name, shorthand, value, usage)
166}
167