Move yggdrasil command line env to separate file

cmd/yggdrasil/cmd_line_env.go

@@ -0,0 +1,45 @@
+package main
+
+import "flag"
+
+type CmdLineEnv struct {
+	genconf       bool
+	useconf       bool
+	useconffile   string
+	normaliseconf bool
+	confjson      bool
+	autoconf      bool
+	ver           bool
+	logto         string
+	getaddr       bool
+	getsnet       bool
+	loglevel      string
+}
+
+func (cmdLineEnv *CmdLineEnv) parseFlagsAndArgs() {
+	genconf := flag.Bool("genconf", false, "print a new config to stdout")
+	useconf := flag.Bool("useconf", false, "read HJSON/JSON config from stdin")
+	useconffile := flag.String("useconffile", "", "read HJSON/JSON config from specified file path")
+	normaliseconf := flag.Bool("normaliseconf", false, "use in combination with either -useconf or -useconffile, outputs your configuration normalised")
+	confjson := flag.Bool("json", false, "print configuration from -genconf or -normaliseconf as JSON instead of HJSON")
+	autoconf := flag.Bool("autoconf", false, "automatic mode (dynamic IP, peer with IPv6 neighbors)")
+	ver := flag.Bool("version", false, "prints the version of this build")
+	logto := flag.String("logto", "stdout", "file path to log to, \"syslog\" or \"stdout\"")
+	getaddr := flag.Bool("address", false, "returns the IPv6 address as derived from the supplied configuration")
+	getsnet := flag.Bool("subnet", false, "returns the IPv6 subnet as derived from the supplied configuration")
+	loglevel := flag.String("loglevel", "info", "loglevel to enable")
+
+	flag.Parse()
+
+	cmdLineEnv.genconf       = *genconf
+	cmdLineEnv.useconf       = *useconf
+	cmdLineEnv.useconffile   = *useconffile
+	cmdLineEnv.normaliseconf = *normaliseconf
+	cmdLineEnv.confjson      = *confjson
+	cmdLineEnv.autoconf      = *autoconf
+	cmdLineEnv.ver           = *ver
+	cmdLineEnv.logto         = *logto
+	cmdLineEnv.getaddr       = *getaddr
+	cmdLineEnv.getsnet       = *getsnet
+	cmdLineEnv.loglevel      = *loglevel
+}