grim/convey

closing merged branch
hostnames
2017-10-13, Gary Kramlich
33eae19fcbbe
closing merged branch
/*
* Convey
* Copyright 2016-2017 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 environment
import (
"strings"
)
func splitEqual(value string) (string, string) {
parts := strings.SplitN(value, "=", 2)
if len(parts) == 1 {
return parts[0], ""
}
return parts[0], parts[1]
}
func Merge(orig, update []string) []string {
env := map[string]string{}
for _, val := range orig {
k, v := splitEqual(val)
env[k] = v
}
for _, val := range update {
k, v := splitEqual(val)
env[k] = v
}
ret := []string{}
for k, v := range env {
val := k
if v != "" {
val += "=" + v
}
ret = append(ret, val)
}
return ret
}