/
config_helper.go
77 lines (67 loc) · 1.76 KB
/
config_helper.go
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/*
* Copyright (C) 2020-2022, IrineSistiana
*
* This file is part of mosdns.
*
* mosdns 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.
*
* mosdns 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 <https://www.gnu.org/licenses/>.
*/
package utils
import (
"github.com/mitchellh/mapstructure"
"golang.org/x/exp/constraints"
"strconv"
)
func SetDefaultNum[K constraints.Integer | constraints.Float](p *K, d K) {
if *p == 0 {
*p = d
}
}
func SetDefaultUnsignNum[K constraints.Integer | constraints.Float](p *K, d K) {
if *p <= 0 {
*p = d
}
}
func SetDefaultString(p *string, d string) {
if len(*p) == 0 {
*p = d
}
}
func CheckNumRange[K constraints.Integer | constraints.Float](v, min, max K) bool {
if v < min || v > max {
return false
}
return true
}
// WeakDecode decodes args from config to output.
func WeakDecode(in any, output any) error {
config := &mapstructure.DecoderConfig{
ErrorUnused: true,
Result: output,
WeaklyTypedInput: true,
TagName: "yaml",
}
decoder, err := mapstructure.NewDecoder(config)
if err != nil {
return err
}
return decoder.Decode(in)
}
func ParseNameOrNum[T constraints.Integer](s string, m map[string]T) (T, bool) {
i, err := strconv.Atoi(s)
if err != nil {
v, ok := m[s]
return v, ok
}
return T(i), true
}