open-consul/agent/config/flagset.go

201 lines
3.7 KiB
Go

package config
import (
"strconv"
"strings"
"time"
)
// boolPtrValue is a flag.Value which stores the value in a *bool if it
// can be parsed with strconv.ParseBool. If the value was not set the
// pointer is nil.
type boolPtrValue struct {
v **bool
b bool
}
func newBoolPtrValue(p **bool) *boolPtrValue {
return &boolPtrValue{p, false}
}
func (s *boolPtrValue) IsBoolFlag() bool { return true }
func (s *boolPtrValue) Set(val string) error {
b, err := strconv.ParseBool(val)
if err != nil {
return err
}
*s.v, s.b = &b, true
return nil
}
func (s *boolPtrValue) Get() interface{} {
if s.b {
return *s.v
}
return (*bool)(nil)
}
func (s *boolPtrValue) String() string {
if s.b {
return strconv.FormatBool(**s.v)
}
return ""
}
// durationPtrValue is a flag.Value which stores the value in a
// *time.Duration if it can be parsed with time.ParseDuration. If the
// value was not set the pointer is nil.
type durationPtrValue struct {
v **time.Duration
b bool
}
func newDurationPtrValue(p **time.Duration) *durationPtrValue {
return &durationPtrValue{p, false}
}
func (s *durationPtrValue) Set(val string) error {
d, err := time.ParseDuration(val)
if err != nil {
return err
}
*s.v, s.b = &d, true
return nil
}
func (s *durationPtrValue) Get() interface{} {
if s.b {
return *s.v
}
return (*time.Duration)(nil)
}
func (s *durationPtrValue) String() string {
if s.b {
return (*(*s).v).String()
}
return ""
}
// intPtrValue is a flag.Value which stores the value in a *int if it
// can be parsed with strconv.Atoi. If the value was not set the pointer
// is nil.
type intPtrValue struct {
v **int
b bool
}
func newIntPtrValue(p **int) *intPtrValue {
return &intPtrValue{p, false}
}
func (s *intPtrValue) Set(val string) error {
n, err := strconv.Atoi(val)
if err != nil {
return err
}
*s.v, s.b = &n, true
return nil
}
func (s *intPtrValue) Get() interface{} {
if s.b {
return *s.v
}
return (*int)(nil)
}
func (s *intPtrValue) String() string {
if s.b {
return strconv.Itoa(**s.v)
}
return ""
}
// stringMapValue is a flag.Value which stores the value in a map[string]string if the
// value is in "key:value" format. This can be specified multiple times.
type stringMapValue map[string]string
func newStringMapValue(p *map[string]string) *stringMapValue {
*p = map[string]string{}
return (*stringMapValue)(p)
}
func (s *stringMapValue) Set(val string) error {
p := strings.SplitN(val, ":", 2)
k, v := p[0], ""
if len(p) == 2 {
v = p[1]
}
(*s)[k] = v
return nil
}
func (s *stringMapValue) Get() interface{} {
return s
}
func (s *stringMapValue) String() string {
var x []string
for k, v := range *s {
if v == "" {
x = append(x, k)
} else {
x = append(x, k+":"+v)
}
}
return strings.Join(x, " ")
}
// stringPtrValue is a flag.Value which stores the value in a *string.
// If the value was not set the pointer is nil.
type stringPtrValue struct {
v **string
b bool
}
func newStringPtrValue(p **string) *stringPtrValue {
return &stringPtrValue{p, false}
}
func (s *stringPtrValue) Set(val string) error {
*s.v, s.b = &val, true
return nil
}
func (s *stringPtrValue) Get() interface{} {
if s.b {
return *s.v
}
return (*string)(nil)
}
func (s *stringPtrValue) String() string {
if s.b {
return **s.v
}
return ""
}
// stringSliceValue is a flag.Value which appends the value to a []string.
// This can be specified multiple times.
type stringSliceValue []string
func newStringSliceValue(p *[]string) *stringSliceValue {
return (*stringSliceValue)(p)
}
func (s *stringSliceValue) Set(val string) error {
*s = append(*s, val)
return nil
}
func (s *stringSliceValue) Get() interface{} {
return s
}
func (s *stringSliceValue) String() string {
return strings.Join(*s, " ")
}