+// Config: parse config.yaml
+
+// Copyright (C) 2021 Simon Ruderich
+//
+// 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 config
+
+import (
+ "fmt"
+ "os"
+
+ "gopkg.in/yaml.v2"
+
+ "ruderich.org/simon/safcm"
+)
+
+type Config struct {
+ DryRun bool `yaml:"-"` // set via command line
+ LogLevel safcm.LogLevel `yaml:"-"` // set via command line
+
+ DetectGroups []string `yaml:"detect_groups"`
+ GroupOrder []string `yaml:"group_order"`
+}
+
+func LoadConfig() (*Config, error) {
+ const path = "config.yaml"
+
+ var cfg Config
+ x, err := os.ReadFile(path)
+ if err != nil {
+ // This file is optional
+ if os.IsNotExist(err) {
+ return &cfg, nil
+ }
+ return nil, err
+ }
+ err = yaml.UnmarshalStrict(x, &cfg)
+ if err != nil {
+ return nil, fmt.Errorf("%s: failed to load: %v", path, err)
+ }
+ return &cfg, nil
+}