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cleaner.go
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cleaner.go
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/*
* MIT License
*
* Copyright (c) 2022 Nicolas JUHEL
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
*/
package viper
import (
"bytes"
"encoding/json"
"strings"
spfvpr "github.com/spf13/viper"
)
func (v *viper) Unset(key ...string) error {
if len(key) < 1 {
return nil
}
configMap := v.v.AllSettings()
for _, k := range key {
configMap = unsetSub(configMap, k)
}
_v := &viper{
v: spfvpr.New(),
base: v.base,
prfx: v.prfx,
deft: v.deft,
remote: v.remote,
}
var (
encodedConfig []byte
err error
)
if encodedConfig, err = json.MarshalIndent(configMap, "", " "); err != nil {
return err
}
_v.v.SetConfigType("json")
if err = _v.v.ReadConfig(bytes.NewReader(encodedConfig)); err != nil {
return err
}
v.v = _v.v
return nil
}
func unsetSub(configMap map[string]interface{}, key string) map[string]interface{} {
kkey := strings.Split(key, ".")
if len(kkey) == 1 {
delete(configMap, key)
return configMap
}
for k, v := range configMap {
if k != kkey[0] {
continue
}
configMap[k] = unsetSub(v.(map[string]interface{}), strings.Join(kkey[1:], "."))
break
}
return configMap
}