1package pflag
2
3import (
4 "bytes"
5 "fmt"
6 "strconv"
7 "strings"
8)
9
10// -- stringToInt Value
11type stringToIntValue struct {
12 value *map[string]int
13 changed bool
14}
15
16func newStringToIntValue(val map[string]int, p *map[string]int) *stringToIntValue {
17 ssv := new(stringToIntValue)
18 ssv.value = p
19 *ssv.value = val
20 return ssv
21}
22
23// Format: a=1,b=2
24func (s *stringToIntValue) Set(val string) error {
25 ss := strings.Split(val, ",")
26 out := make(map[string]int, len(ss))
27 for _, pair := range ss {
28 kv := strings.SplitN(pair, "=", 2)
29 if len(kv) != 2 {
30 return fmt.Errorf("%s must be formatted as key=value", pair)
31 }
32 var err error
33 out[kv[0]], err = strconv.Atoi(kv[1])
34 if err != nil {
35 return err
36 }
37 }
38 if !s.changed {
39 *s.value = out
40 } else {
41 for k, v := range out {
42 (*s.value)[k] = v
43 }
44 }
45 s.changed = true
46 return nil
47}
48
49func (s *stringToIntValue) Type() string {
50 return "stringToInt"
51}
52
53func (s *stringToIntValue) String() string {
54 var buf bytes.Buffer
55 i := 0
56 for k, v := range *s.value {
57 if i > 0 {
58 buf.WriteRune(',')
59 }
60 buf.WriteString(k)
61 buf.WriteRune('=')
62 buf.WriteString(strconv.Itoa(v))
63 i++
64 }
65 return "[" + buf.String() + "]"
66}
67
68func stringToIntConv(val string) (interface{}, error) {
69 val = strings.Trim(val, "[]")
70 // An empty string would cause an empty map
71 if len(val) == 0 {
72 return map[string]int{}, nil
73 }
74 ss := strings.Split(val, ",")
75 out := make(map[string]int, len(ss))
76 for _, pair := range ss {
77 kv := strings.SplitN(pair, "=", 2)
78 if len(kv) != 2 {
79 return nil, fmt.Errorf("%s must be formatted as key=value", pair)
80 }
81 var err error
82 out[kv[0]], err = strconv.Atoi(kv[1])
83 if err != nil {
84 return nil, err
85 }
86 }
87 return out, nil
88}
89
90// GetStringToInt return the map[string]int value of a flag with the given name
91func (f *FlagSet) GetStringToInt(name string) (map[string]int, error) {
92 val, err := f.getFlagType(name, "stringToInt", stringToIntConv)
93 if err != nil {
94 return map[string]int{}, err
95 }
96 return val.(map[string]int), nil
97}
98
99// StringToIntVar defines a string flag with specified name, default value, and usage string.
100// The argument p points to a map[string]int variable in which to store the values of the multiple flags.
101// The value of each argument will not try to be separated by comma
102func (f *FlagSet) StringToIntVar(p *map[string]int, name string, value map[string]int, usage string) {
103 f.VarP(newStringToIntValue(value, p), name, "", usage)
104}
105
106// StringToIntVarP is like StringToIntVar, but accepts a shorthand letter that can be used after a single dash.
107func (f *FlagSet) StringToIntVarP(p *map[string]int, name, shorthand string, value map[string]int, usage string) {
108 f.VarP(newStringToIntValue(value, p), name, shorthand, usage)
109}
110
111// StringToIntVar defines a string flag with specified name, default value, and usage string.
112// The argument p points to a map[string]int variable in which to store the value of the flag.
113// The value of each argument will not try to be separated by comma
114func StringToIntVar(p *map[string]int, name string, value map[string]int, usage string) {
115 CommandLine.VarP(newStringToIntValue(value, p), name, "", usage)
116}
117
118// StringToIntVarP is like StringToIntVar, but accepts a shorthand letter that can be used after a single dash.
119func StringToIntVarP(p *map[string]int, name, shorthand string, value map[string]int, usage string) {
120 CommandLine.VarP(newStringToIntValue(value, p), name, shorthand, usage)
121}
122
123// StringToInt defines a string flag with specified name, default value, and usage string.
124// The return value is the address of a map[string]int variable that stores the value of the flag.
125// The value of each argument will not try to be separated by comma
126func (f *FlagSet) StringToInt(name string, value map[string]int, usage string) *map[string]int {
127 p := map[string]int{}
128 f.StringToIntVarP(&p, name, "", value, usage)
129 return &p
130}
131
132// StringToIntP is like StringToInt, but accepts a shorthand letter that can be used after a single dash.
133func (f *FlagSet) StringToIntP(name, shorthand string, value map[string]int, usage string) *map[string]int {
134 p := map[string]int{}
135 f.StringToIntVarP(&p, name, shorthand, value, usage)
136 return &p
137}
138
139// StringToInt defines a string flag with specified name, default value, and usage string.
140// The return value is the address of a map[string]int variable that stores the value of the flag.
141// The value of each argument will not try to be separated by comma
142func StringToInt(name string, value map[string]int, usage string) *map[string]int {
143 return CommandLine.StringToIntP(name, "", value, usage)
144}
145
146// StringToIntP is like StringToInt, but accepts a shorthand letter that can be used after a single dash.
147func StringToIntP(name, shorthand string, value map[string]int, usage string) *map[string]int {
148 return CommandLine.StringToIntP(name, shorthand, value, usage)
149}