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namedcertkey_flag.go
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namedcertkey_flag.go
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// Copyright © 2023 OpenIM-Sigs open source community. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package flag
import (
"errors"
"flag"
"strings"
)
// NamedCertKey is a flag value parsing "certfile,keyfile" and "certfile,keyfile:name,name,name".
type NamedCertKey struct {
Names []string
CertFile, KeyFile string
}
var _ flag.Value = &NamedCertKey{}
func (nkc *NamedCertKey) String() string {
s := nkc.CertFile + "," + nkc.KeyFile
if len(nkc.Names) > 0 {
s = s + ":" + strings.Join(nkc.Names, ",")
}
return s
}
func (nkc *NamedCertKey) Set(value string) error {
cs := strings.SplitN(value, ":", 2)
var keycert string
if len(cs) == 2 {
var names string
keycert, names = strings.TrimSpace(cs[0]), strings.TrimSpace(cs[1])
if names == "" {
return errors.New("empty names list is not allowed")
}
nkc.Names = nil
for _, name := range strings.Split(names, ",") {
nkc.Names = append(nkc.Names, strings.TrimSpace(name))
}
} else {
nkc.Names = nil
keycert = strings.TrimSpace(cs[0])
}
cs = strings.Split(keycert, ",")
if len(cs) != 2 {
return errors.New("expected comma separated certificate and key file paths")
}
nkc.CertFile = strings.TrimSpace(cs[0])
nkc.KeyFile = strings.TrimSpace(cs[1])
return nil
}
func (*NamedCertKey) Type() string {
return "namedCertKey"
}
// NamedCertKeyArray is a flag value parsing NamedCertKeys, each passed with its own
// flag instance (in contrast to comma separated slices).
type NamedCertKeyArray struct {
value *[]NamedCertKey
changed bool
}
var _ flag.Value = &NamedCertKeyArray{}
// NewNamedKeyCertArray creates a new NamedCertKeyArray with the internal value
// pointing to p.
func NewNamedCertKeyArray(p *[]NamedCertKey) *NamedCertKeyArray {
return &NamedCertKeyArray{
value: p,
}
}
func (a *NamedCertKeyArray) Set(val string) error {
nkc := NamedCertKey{}
err := nkc.Set(val)
if err != nil {
return err
}
if !a.changed {
*a.value = []NamedCertKey{nkc}
a.changed = true
} else {
*a.value = append(*a.value, nkc)
}
return nil
}
func (a *NamedCertKeyArray) Type() string {
return "namedCertKey"
}
func (a *NamedCertKeyArray) String() string {
nkcs := make([]string, 0, len(*a.value))
for i := range *a.value {
nkcs = append(nkcs, (*a.value)[i].String())
}
return "[" + strings.Join(nkcs, ";") + "]"
}