Add cli documentation.

Author: brocaar

cmd/semtech-bridge/doc.go

@@ -0,0 +1,21 @@
+/*
+NAME:
+   semtech-bridge - Semtech UDP protocol speaking gateway <-> MQTT
+
+USAGE:
+   main [global options] command [command options] [arguments...]
+   
+COMMANDS:
+   help, h	Shows a list of commands or help for one command
+   
+GLOBAL OPTIONS:
+   --udp-bind "0.0.0.0:1700"		ip:port to bind the UDP listener to [$UDP_BIND]
+   --mqtt-server "tcp://127.0.0.1:1883"	MQTT server [$MQTT_SERVER]
+   --mqtt-username 			MQTT username [$MQTT_USERNAME]
+   --mqtt-password 			MQTT password [$MQTT_PASSWORD]
+   --help, -h				show help
+   --version, -v			print the version
+   
+
+*/
+package main

cmd/semtech-bridge/doc.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+echo '/*' > doc.go
+go run main.go help >> doc.go
+echo >> doc.go
+echo '*/' >> doc.go
+echo -e "package main" >> doc.go

cmd/semtech-bridge/main.go

@@ -1,5 +1,7 @@
 package main
 
+//go:generate ./doc.sh
+
 import (
 	"os"
 	"os/signal"