1st shot

upd/cfg/config.go

@@ -0,0 +1,55 @@
+/*
+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 cfg
+
+import (
+	"fmt"
+	"strings"
+)
+
+const Version string = "v0.0.1"
+
+var VERSION string // maintained by -x
+
+type Config struct {
+	ApiPrefix  string
+	Debug      bool
+	Listen     string
+	StorageDir string
+	Url        string
+}
+
+func Getversion() string {
+	// main program version
+
+	// generated  version string, used  by -v contains  cfg.Version on
+	//  main  branch,   and  cfg.Version-$branch-$lastcommit-$date  on
+	// development branch
+
+	return fmt.Sprintf("This is upd version %s", VERSION)
+}
+
+// post processing of options, if any
+func (c *Config) ApplyDefaults() {
+	if len(c.Url) == 0 {
+		if strings.HasPrefix(c.Listen, ":") {
+			c.Url = "http://localhost" + c.Listen
+		} else {
+			c.Url = "http://" + c.Listen
+		}
+	}
+}