1package pflag
2
3import (
4	"io"
5	"strconv"
6	"strings"
7)
8
9// -- boolSlice Value
10type boolSliceValue struct {
11	value   *[]bool
12	changed bool
13}
14
15func newBoolSliceValue(val []bool, p *[]bool) *boolSliceValue {
16	bsv := new(boolSliceValue)
17	bsv.value = p
18	*bsv.value = val
19	return bsv
20}
21
22// Set converts, and assigns, the comma-separated boolean argument string representation as the []bool value of this flag.
23// If Set is called on a flag that already has a []bool assigned, the newly converted values will be appended.
24func (s *boolSliceValue) Set(val string) error {
25
26	// remove all quote characters
27	rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")
28
29	// read flag arguments with CSV parser
30	boolStrSlice, err := readAsCSV(rmQuote.Replace(val))
31	if err != nil && err != io.EOF {
32		return err
33	}
34
35	// parse boolean values into slice
36	out := make([]bool, 0, len(boolStrSlice))
37	for _, boolStr := range boolStrSlice {
38		b, err := strconv.ParseBool(strings.TrimSpace(boolStr))
39		if err != nil {
40			return err
41		}
42		out = append(out, b)
43	}
44
45	if !s.changed {
46		*s.value = out
47	} else {
48		*s.value = append(*s.value, out...)
49	}
50
51	s.changed = true
52
53	return nil
54}
55
56// Type returns a string that uniquely represents this flag's type.
57func (s *boolSliceValue) Type() string {
58	return "boolSlice"
59}
60
61// String defines a "native" format for this boolean slice flag value.
62func (s *boolSliceValue) String() string {
63
64	boolStrSlice := make([]string, len(*s.value))
65	for i, b := range *s.value {
66		boolStrSlice[i] = strconv.FormatBool(b)
67	}
68
69	out, _ := writeAsCSV(boolStrSlice)
70
71	return "[" + out + "]"
72}
73
74func (s *boolSliceValue) fromString(val string) (bool, error) {
75	return strconv.ParseBool(val)
76}
77
78func (s *boolSliceValue) toString(val bool) string {
79	return strconv.FormatBool(val)
80}
81
82func (s *boolSliceValue) Append(val string) error {
83	i, err := s.fromString(val)
84	if err != nil {
85		return err
86	}
87	*s.value = append(*s.value, i)
88	return nil
89}
90
91func (s *boolSliceValue) Replace(val []string) error {
92	out := make([]bool, len(val))
93	for i, d := range val {
94		var err error
95		out[i], err = s.fromString(d)
96		if err != nil {
97			return err
98		}
99	}
100	*s.value = out
101	return nil
102}
103
104func (s *boolSliceValue) GetSlice() []string {
105	out := make([]string, len(*s.value))
106	for i, d := range *s.value {
107		out[i] = s.toString(d)
108	}
109	return out
110}
111
112func boolSliceConv(val string) (interface{}, error) {
113	val = strings.Trim(val, "[]")
114	// Empty string would cause a slice with one (empty) entry
115	if len(val) == 0 {
116		return []bool{}, nil
117	}
118	ss := strings.Split(val, ",")
119	out := make([]bool, len(ss))
120	for i, t := range ss {
121		var err error
122		out[i], err = strconv.ParseBool(t)
123		if err != nil {
124			return nil, err
125		}
126	}
127	return out, nil
128}
129
130// GetBoolSlice returns the []bool value of a flag with the given name.
131func (f *FlagSet) GetBoolSlice(name string) ([]bool, error) {
132	val, err := f.getFlagType(name, "boolSlice", boolSliceConv)
133	if err != nil {
134		return []bool{}, err
135	}
136	return val.([]bool), nil
137}
138
139// BoolSliceVar defines a boolSlice flag with specified name, default value, and usage string.
140// The argument p points to a []bool variable in which to store the value of the flag.
141func (f *FlagSet) BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
142	f.VarP(newBoolSliceValue(value, p), name, "", usage)
143}
144
145// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
146func (f *FlagSet) BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
147	f.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
148}
149
150// BoolSliceVar defines a []bool flag with specified name, default value, and usage string.
151// The argument p points to a []bool variable in which to store the value of the flag.
152func BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
153	CommandLine.VarP(newBoolSliceValue(value, p), name, "", usage)
154}
155
156// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
157func BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
158	CommandLine.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
159}
160
161// BoolSlice defines a []bool flag with specified name, default value, and usage string.
162// The return value is the address of a []bool variable that stores the value of the flag.
163func (f *FlagSet) BoolSlice(name string, value []bool, usage string) *[]bool {
164	p := []bool{}
165	f.BoolSliceVarP(&p, name, "", value, usage)
166	return &p
167}
168
169// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
170func (f *FlagSet) BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
171	p := []bool{}
172	f.BoolSliceVarP(&p, name, shorthand, value, usage)
173	return &p
174}
175
176// BoolSlice defines a []bool flag with specified name, default value, and usage string.
177// The return value is the address of a []bool variable that stores the value of the flag.
178func BoolSlice(name string, value []bool, usage string) *[]bool {
179	return CommandLine.BoolSliceP(name, "", value, usage)
180}
181
182// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
183func BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
184	return CommandLine.BoolSliceP(name, shorthand, value, usage)
185}
186