Started with main of checker.

cmd/csaf_checker/main.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"os"
+
+	"github.com/jessevdk/go-flags"
+)
+
+type options struct {
+	Output string `short:"o" long:"output" description:"File name of the generated report" value-name:"REPORT-FILE"`
+}
+
+func checkParser(err error) {
+	if err != nil {
+		if e, ok := err.(*flags.Error); ok && e.Type == flags.ErrHelp {
+			os.Exit(0)
+		}
+		os.Exit(1)
+	}
+}
+
+func main() {
+	var opts options
+
+	args, err := flags.Parse(&opts)
+	checkParser(err)
+
+	_ = args
+
+}

cmd/csaf_checker/report.go

@@ -0,0 +1,16 @@
+package main
+
+type Requirement struct {
+	Num         int
+	Description string
+	Messages    []string
+}
+
+type domain struct {
+	Name         string
+	Requirements []Requirement
+}
+
+type report struct {
+	Domains []domain
+}