1
package pflag
2

3
// -- string Value
4
type stringValue string
5

6
func newStringValue(val string, p *string) *stringValue {
7
	*p = val
8
	return (*stringValue)(p)
9
}
10

11
func (s *stringValue) Set(val string) error {
12
	*s = stringValue(val)
13
	return nil
14
}
15
func (s *stringValue) Type() string {
16
	return "string"
17
}
18

19
func (s *stringValue) String() string { return string(*s) }
20

21
func stringConv(sval string) (interface{}, error) {
22
	return sval, nil
23
}
24

25
// GetString return the string value of a flag with the given name
26
func (f *FlagSet) GetString(name string) (string, error) {
27
	val, err := f.getFlagType(name, "string", stringConv)
28
	if err != nil {
29
		return "", err
30
	}
31
	return val.(string), nil
32
}
33

34
// StringVar defines a string flag with specified name, default value, and usage string.
35
// The argument p points to a string variable in which to store the value of the flag.
36
func (f *FlagSet) StringVar(p *string, name string, value string, usage string) {
37
	f.VarP(newStringValue(value, p), name, "", usage)
38
}
39

40
// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
41
func (f *FlagSet) StringVarP(p *string, name, shorthand string, value string, usage string) {
42
	f.VarP(newStringValue(value, p), name, shorthand, usage)
43
}
44

45
// StringVar defines a string flag with specified name, default value, and usage string.
46
// The argument p points to a string variable in which to store the value of the flag.
47
func StringVar(p *string, name string, value string, usage string) {
48
	CommandLine.VarP(newStringValue(value, p), name, "", usage)
49
}
50

51
// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
52
func StringVarP(p *string, name, shorthand string, value string, usage string) {
53
	CommandLine.VarP(newStringValue(value, p), name, shorthand, usage)
54
}
55

56
// String defines a string flag with specified name, default value, and usage string.
57
// The return value is the address of a string variable that stores the value of the flag.
58
func (f *FlagSet) String(name string, value string, usage string) *string {
59
	p := new(string)
60
	f.StringVarP(p, name, "", value, usage)
61
	return p
62
}
63

64
// StringP is like String, but accepts a shorthand letter that can be used after a single dash.
65
func (f *FlagSet) StringP(name, shorthand string, value string, usage string) *string {
66
	p := new(string)
67
	f.StringVarP(p, name, shorthand, value, usage)
68
	return p
69
}
70

71
// String defines a string flag with specified name, default value, and usage string.
72
// The return value is the address of a string variable that stores the value of the flag.
73
func String(name string, value string, usage string) *string {
74
	return CommandLine.StringP(name, "", value, usage)
75
}
76

77
// StringP is like String, but accepts a shorthand letter that can be used after a single dash.
78
func StringP(name, shorthand string, value string, usage string) *string {
79
	return CommandLine.StringP(name, shorthand, value, usage)
80
}
81

82