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address.go
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address.go
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// Copyright (c) 2015-2016 The btcsuite developers
// Copyright (c) 2016 The Decred developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package cfgutil
import "github.com/decred/dcrd/dcrutil"
// AddressFlag contains a dcrutil.Address and implements the flags.Marshaler and
// Unmarshaler interfaces so it can be used as a config struct field.
type AddressFlag struct {
Address dcrutil.Address
}
// NewAddressFlag creates an AddressFlag with a default dcrutil.Address.
func NewAddressFlag(defaultValue dcrutil.Address) *AddressFlag {
return &AddressFlag{defaultValue}
}
// MarshalFlag satisifes the flags.Marshaler interface.
func (a *AddressFlag) MarshalFlag() (string, error) {
if a.Address != nil {
return a.Address.String(), nil
}
return "", nil
}
// UnmarshalFlag satisifes the flags.Unmarshaler interface.
func (a *AddressFlag) UnmarshalFlag(addr string) error {
if addr == "" {
a.Address = nil
return nil
}
address, err := dcrutil.DecodeAddress(addr)
if err != nil {
return err
}
a.Address = address
return nil
}