grim/govcs

Add a simple readme
draft
2017-12-05, Gary Kramlich
9798f686fc4f
Add a simple readme
/*
* govcs
* Copyright 2017 Gary Kramlich <grim@reaperworld.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 exec
import (
"os/exec"
"sync"
)
type ExecBackend func(name string, args ...string) Cmd
var (
activeBackend ExecBackend
lock sync.Mutex
)
func init() {
SetBackend(func(name string, args ...string) Cmd {
cmd := exec.Command(name, args...)
return Cmd(cmd)
})
}
func SetBackend(backend ExecBackend) {
lock.Lock()
defer lock.Unlock()
activeBackend = backend
}
func Backend() ExecBackend {
return activeBackend
}
func Command(name string, args ...string) Cmd {
return activeBackend(name, args...)
}