enhancements:

- english README (german version will be put to the homepage)
- better commandline options
- enhanced logging capabilities and error handling
- config file support
- support to backup one or more singular ads
- add id to adlisting
- added manual page
- fixed config file reading
- fixed typo

config.go

@@ -0,0 +1,51 @@
+/*
+Copyright © 2023 Thomas von Dein
+
+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 main
+
+import (
+	"github.com/hashicorp/hcl/v2/hclsimple"
+	"os"
+)
+
+type Config struct {
+	Verbose bool   `hcl:"verbose"`
+	User    int    `hcl:"user"`
+	Outdir  string `hcl:"outdir"`
+}
+
+func ParseConfigfile(file string) (*Config, error) {
+	c := Config{}
+	if path, err := os.Stat(file); !os.IsNotExist(err) {
+		if !path.IsDir() {
+			configstring, err := os.ReadFile(file)
+			if err != nil {
+				return nil, err
+			}
+
+			err = hclsimple.Decode(
+				path.Name(), configstring,
+				nil, &c,
+			)
+
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	return &c, nil
+}