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env.go
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env.go
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// Copyright (c) 2022-2023 The Go-Curses Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package env
// TODO: implement rc key=val files?
// TODO: decide upon auto-init versus manual
import (
"os"
"strings"
)
var (
cache map[string]string
)
func init() {
Reload()
}
func Reload() {
cache = make(map[string]string)
environ := os.Environ()
for _, line := range environ {
parts := strings.Split(line, "=")
if len(parts) == 2 {
cache[parts[0]] = parts[1]
} else {
// logging warning? os.Environ() gave bad output?
}
}
}
func Get(key, def string) string {
if value, exists := cache[key]; exists {
return value
}
return def
}
func Set(key, value string) {
if err := os.Setenv(key, value); err != nil {
// logging error
} else {
cache[key] = value
}
}