1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
package validate
import (
"fmt"
"strings"
)
// Honors cobra.Value interface
type ChoiceValue struct {
value *string
choices []string
}
// Value may be used in cobra FlagSet methods Var/VarP/VarPF() to select from a set of values
//
// Example:
// created := validate.ChoiceValue(&opts.Sort, "command", "created", "id", "image", "names", "runningfor", "size", "status")
// flags.Var(created, "sort", "Sort output by: "+created.Choices())
func Value(p *string, choices ...string) *ChoiceValue {
return &ChoiceValue{
value: p,
choices: choices,
}
}
func (c *ChoiceValue) String() string {
return *c.value
}
func (c *ChoiceValue) Set(value string) error {
for _, v := range c.choices {
if v == value {
*c.value = value
return nil
}
}
return fmt.Errorf("%q is not a valid value. Choose from: %q", value, c.Choices())
}
func (c *ChoiceValue) Choices() string {
return strings.Join(c.choices, ", ")
}
func (c *ChoiceValue) Type() string {
return "choice"
}
|
