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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 the snap and plug or slot name. The following
// combinations are allowed:
// * <snap>:<plug/slot>
// * <snap>
// * :<plug/slot>
// Every other combination results in an error.
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
}
// SnapAndNameStrict holds a plug or slot name and, optionally, a snap name.
// The following combinations are allowed:
// * <snap>:<plug/slot>
// * :<plug/slot>
// Every other combination results in an error.
type SnapAndNameStrict struct {
SnapAndName
}
// UnmarshalFlag unmarshals the snap and plug or slot name. The following
// combinations are allowed:
// * <snap>:<plug/slot>
// * :<plug/slot>
// Every other combination results in an error.
func (sn *SnapAndNameStrict) UnmarshalFlag(value string) error {
sn.Snap, sn.Name = "", ""
parts := strings.Split(value, ":")
if len(parts) != 2 || parts[1] == "" {
return fmt.Errorf(i18n.G("invalid value: %q (want snap:name or :name)"), value)
}
sn.Snap, sn.Name = parts[0], parts[1]
return nil
}
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