/
interfaces_common.go
55 lines (49 loc) · 1.35 KB
/
interfaces_common.go
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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2014-2016 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package main
import (
"fmt"
"strings"
"github.com/snapcore/snapd/i18n"
)
// SnapAndName holds a snap name and a plug or slot name.
type SnapAndName struct {
Snap string
Name string
}
// UnmarshalFlag unmarshals snap and plug or slot name.
func (sn *SnapAndName) UnmarshalFlag(value string) error {
parts := strings.Split(value, ":")
sn.Snap = ""
sn.Name = ""
switch len(parts) {
case 1:
sn.Snap = parts[0]
case 2:
sn.Snap = parts[0]
sn.Name = parts[1]
// Reject "snap:" (that should be spelled as "snap")
if sn.Name == "" {
sn.Snap = ""
}
}
if sn.Snap == "" && sn.Name == "" {
return fmt.Errorf(i18n.G("invalid value: %q (want snap:name or snap)"), value)
}
return nil
}