podman

1
package pflag
2

3
import (
4
	"bytes"
5
	"encoding/csv"
6
	"fmt"
7
	"strings"
8
)
9

10
// -- stringToString Value
11
type stringToStringValue struct {
12
	value   *map[string]string
13
	changed bool
14
}
15

16
func newStringToStringValue(val map[string]string, p *map[string]string) *stringToStringValue {
17
	ssv := new(stringToStringValue)
18
	ssv.value = p
19
	*ssv.value = val
20
	return ssv
21
}
22

23
// Format: a=1,b=2
24
func (s *stringToStringValue) Set(val string) error {
25
	var ss []string
26
	n := strings.Count(val, "=")
27
	switch n {
28
	case 0:
29
		return fmt.Errorf("%s must be formatted as key=value", val)
30
	case 1:
31
		ss = append(ss, strings.Trim(val, `"`))
32
	default:
33
		r := csv.NewReader(strings.NewReader(val))
34
		var err error
35
		ss, err = r.Read()
36
		if err != nil {
37
			return err
38
		}
39
	}
40

41
	out := make(map[string]string, len(ss))
42
	for _, pair := range ss {
43
		kv := strings.SplitN(pair, "=", 2)
44
		if len(kv) != 2 {
45
			return fmt.Errorf("%s must be formatted as key=value", pair)
46
		}
47
		out[kv[0]] = kv[1]
48
	}
49
	if !s.changed {
50
		*s.value = out
51
	} else {
52
		for k, v := range out {
53
			(*s.value)[k] = v
54
		}
55
	}
56
	s.changed = true
57
	return nil
58
}
59

60
func (s *stringToStringValue) Type() string {
61
	return "stringToString"
62
}
63

64
func (s *stringToStringValue) String() string {
65
	records := make([]string, 0, len(*s.value)>>1)
66
	for k, v := range *s.value {
67
		records = append(records, k+"="+v)
68
	}
69

70
	var buf bytes.Buffer
71
	w := csv.NewWriter(&buf)
72
	if err := w.Write(records); err != nil {
73
		panic(err)
74
	}
75
	w.Flush()
76
	return "[" + strings.TrimSpace(buf.String()) + "]"
77
}
78

79
func stringToStringConv(val string) (interface{}, error) {
80
	val = strings.Trim(val, "[]")
81
	// An empty string would cause an empty map
82
	if len(val) == 0 {
83
		return map[string]string{}, nil
84
	}
85
	r := csv.NewReader(strings.NewReader(val))
86
	ss, err := r.Read()
87
	if err != nil {
88
		return nil, err
89
	}
90
	out := make(map[string]string, len(ss))
91
	for _, pair := range ss {
92
		kv := strings.SplitN(pair, "=", 2)
93
		if len(kv) != 2 {
94
			return nil, fmt.Errorf("%s must be formatted as key=value", pair)
95
		}
96
		out[kv[0]] = kv[1]
97
	}
98
	return out, nil
99
}
100

101
// GetStringToString return the map[string]string value of a flag with the given name
102
func (f *FlagSet) GetStringToString(name string) (map[string]string, error) {
103
	val, err := f.getFlagType(name, "stringToString", stringToStringConv)
104
	if err != nil {
105
		return map[string]string{}, err
106
	}
107
	return val.(map[string]string), nil
108
}
109

110
// StringToStringVar defines a string flag with specified name, default value, and usage string.
111
// The argument p points to a map[string]string variable in which to store the values of the multiple flags.
112
// The value of each argument will not try to be separated by comma
113
func (f *FlagSet) StringToStringVar(p *map[string]string, name string, value map[string]string, usage string) {
114
	f.VarP(newStringToStringValue(value, p), name, "", usage)
115
}
116

117
// StringToStringVarP is like StringToStringVar, but accepts a shorthand letter that can be used after a single dash.
118
func (f *FlagSet) StringToStringVarP(p *map[string]string, name, shorthand string, value map[string]string, usage string) {
119
	f.VarP(newStringToStringValue(value, p), name, shorthand, usage)
120
}
121

122
// StringToStringVar defines a string flag with specified name, default value, and usage string.
123
// The argument p points to a map[string]string variable in which to store the value of the flag.
124
// The value of each argument will not try to be separated by comma
125
func StringToStringVar(p *map[string]string, name string, value map[string]string, usage string) {
126
	CommandLine.VarP(newStringToStringValue(value, p), name, "", usage)
127
}
128

129
// StringToStringVarP is like StringToStringVar, but accepts a shorthand letter that can be used after a single dash.
130
func StringToStringVarP(p *map[string]string, name, shorthand string, value map[string]string, usage string) {
131
	CommandLine.VarP(newStringToStringValue(value, p), name, shorthand, usage)
132
}
133

134
// StringToString defines a string flag with specified name, default value, and usage string.
135
// The return value is the address of a map[string]string variable that stores the value of the flag.
136
// The value of each argument will not try to be separated by comma
137
func (f *FlagSet) StringToString(name string, value map[string]string, usage string) *map[string]string {
138
	p := map[string]string{}
139
	f.StringToStringVarP(&p, name, "", value, usage)
140
	return &p
141
}
142

143
// StringToStringP is like StringToString, but accepts a shorthand letter that can be used after a single dash.
144
func (f *FlagSet) StringToStringP(name, shorthand string, value map[string]string, usage string) *map[string]string {
145
	p := map[string]string{}
146
	f.StringToStringVarP(&p, name, shorthand, value, usage)
147
	return &p
148
}
149

150
// StringToString defines a string flag with specified name, default value, and usage string.
151
// The return value is the address of a map[string]string variable that stores the value of the flag.
152
// The value of each argument will not try to be separated by comma
153
func StringToString(name string, value map[string]string, usage string) *map[string]string {
154
	return CommandLine.StringToStringP(name, "", value, usage)
155
}
156

157
// StringToStringP is like StringToString, but accepts a shorthand letter that can be used after a single dash.
158
func StringToStringP(name, shorthand string, value map[string]string, usage string) *map[string]string {
159
	return CommandLine.StringToStringP(name, shorthand, value, usage)
160
}
161