1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45
46. 46
47. 47
48. 48
49. 49
50. 50
51. 51
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58
59. 59
60. 60
61. 61
62. 62
63. 63
64. 64
65. 65
66. 66
67. 67
68. 68
69. 69
70. 70
71. 71
72. 72
73. 73
74. 74
75. 75
76. 76
77. 77
78. 78
79. 79
80. 80
81. 81
82. 82
83. 83
84. 84
85. 85
86. 86
87. 87
88. 88
89. 89
90. 90
91. 91
92. 92
93. 93
94. 94
95. 95
96. 96
97. 97
98. 98
99. 99
100. 100
101. 101
102. 102
103. 103
104. 104
105. 105
106. 106
107. 107
108. 108
109. 109
110. 110
111. 111
112. 112
113. 113
114. 114
115. 115
116. 116
117. 117
118. 118
119. 119
120. 120
121. 121
122. 122
123. 123
124. 124
125. 125
126. 126
127. 127
128. 128
129. 129
130. 130
131. 131
132. 132
133. 133
134. 134
135. 135
136. 136
137. 137
138. 138
139. 139
140. 140
141. 141
142. 142
143. 143
144. 144
145. 145
146. 146
147. 147
148. 148
149. 149

package pflag

import (
	"bytes"
	"fmt"
	"strconv"
	"strings"
)

// -- stringToInt Value
type stringToIntValue struct {
	value   *map[string]int
	changed bool
}

func newStringToIntValue(val map[string]int, p *map[string]int) *stringToIntValue {
	ssv := new(stringToIntValue)
	ssv.value = p
	*ssv.value = val
	return ssv
}

// Format: a=1,b=2
func (s *stringToIntValue) Set(val string) error {
	ss := strings.Split(val, ",")
	out := make(map[string]int, len(ss))
	for _, pair := range ss {
		kv := strings.SplitN(pair, "=", 2)
		if len(kv) != 2 {
			return fmt.Errorf("%s must be formatted as key=value", pair)
		}
		var err error
		out[kv[0]], err = strconv.Atoi(kv[1])
		if err != nil {
			return err
		}
	}
	if !s.changed {
		*s.value = out
	} else {
		for k, v := range out {
			(*s.value)[k] = v
		}
	}
	s.changed = true
	return nil
}

func (s *stringToIntValue) Type() string {
	return "stringToInt"
}

func (s *stringToIntValue) String() string {
	var buf bytes.Buffer
	i := 0
	for k, v := range *s.value {
		if i > 0 {
			buf.WriteRune(',')
		}
		buf.WriteString(k)
		buf.WriteRune('=')
		buf.WriteString(strconv.Itoa(v))
		i++
	}
	return "[" + buf.String() + "]"
}

func stringToIntConv(val string) (interface{}, error) {
	val = strings.Trim(val, "[]")
	// An empty string would cause an empty map
	if len(val) == 0 {
		return map[string]int{}, nil
	}
	ss := strings.Split(val, ",")
	out := make(map[string]int, len(ss))
	for _, pair := range ss {
		kv := strings.SplitN(pair, "=", 2)
		if len(kv) != 2 {
			return nil, fmt.Errorf("%s must be formatted as key=value", pair)
		}
		var err error
		out[kv[0]], err = strconv.Atoi(kv[1])
		if err != nil {
			return nil, err
		}
	}
	return out, nil
}

// GetStringToInt return the map[string]int value of a flag with the given name
func (f *FlagSet) GetStringToInt(name string) (map[string]int, error) {
	val, err := f.getFlagType(name, "stringToInt", stringToIntConv)
	if err != nil {
		return map[string]int{}, err
	}
	return val.(map[string]int), nil
}

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

// StringToIntVarP is like StringToIntVar, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) StringToIntVarP(p *map[string]int, name, shorthand string, value map[string]int, usage string) {
	f.VarP(newStringToIntValue(value, p), name, shorthand, usage)
}

// StringToIntVar defines a string flag with specified name, default value, and usage string.
// The argument p points to a map[string]int variable in which to store the value of the flag.
// The value of each argument will not try to be separated by comma
func StringToIntVar(p *map[string]int, name string, value map[string]int, usage string) {
	CommandLine.VarP(newStringToIntValue(value, p), name, "", usage)
}

// StringToIntVarP is like StringToIntVar, but accepts a shorthand letter that can be used after a single dash.
func StringToIntVarP(p *map[string]int, name, shorthand string, value map[string]int, usage string) {
	CommandLine.VarP(newStringToIntValue(value, p), name, shorthand, usage)
}

// StringToInt defines a string flag with specified name, default value, and usage string.
// The return value is the address of a map[string]int variable that stores the value of the flag.
// The value of each argument will not try to be separated by comma
func (f *FlagSet) StringToInt(name string, value map[string]int, usage string) *map[string]int {
	p := map[string]int{}
	f.StringToIntVarP(&p, name, "", value, usage)
	return &p
}

// StringToIntP is like StringToInt, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) StringToIntP(name, shorthand string, value map[string]int, usage string) *map[string]int {
	p := map[string]int{}
	f.StringToIntVarP(&p, name, shorthand, value, usage)
	return &p
}

// StringToInt defines a string flag with specified name, default value, and usage string.
// The return value is the address of a map[string]int variable that stores the value of the flag.
// The value of each argument will not try to be separated by comma
func StringToInt(name string, value map[string]int, usage string) *map[string]int {
	return CommandLine.StringToIntP(name, "", value, usage)
}

// StringToIntP is like StringToInt, but accepts a shorthand letter that can be used after a single dash.
func StringToIntP(name, shorthand string, value map[string]int, usage string) *map[string]int {
	return CommandLine.StringToIntP(name, shorthand, value, usage)
}