First working version

[safcm/safcm.git] / cmd / safcm / config / config.go

diff --git a/cmd/safcm/config/config.go b/cmd/safcm/config/config.go
new file mode 100644 (file)
index 0000000..6dae4a1
--- /dev/null
+++ b/cmd/safcm/config/config.go
@@ -0,0 +1,54 @@
+// 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
+}