version info

Makefile

@@ -1,6 +1,9 @@
 
+VERSION=2.0
+LDFLAGS=-ldflags "-w -s -X main.Version=${VERSION}"
+
 test:
 	go test ./...
 
 build:
-	go build .
+	go build ${LDFLAGS}

main.go

@@ -3,12 +3,28 @@ package main
 import (
 	"mapserver/params"
 	"mapserver/worldconfig"
+	"flag"
 	"fmt"
 )
 
+var (
+	Version string
+)
+
 func main() {
 	p := params.Parse()
+
 	if p.Help {
+		flag.PrintDefaults()
+		return
+	}
+
+	if p.Version {
+		fmt.Print("Mapserver version: ")
+		if Version == "" {
+			Version = "SNAPSHOT"
+		}
+		fmt.Println(Version)
 		return
 	}
 

params/params.go

@@ -8,6 +8,7 @@ type ParamsType struct {
 	Worlddir string
 	Port     int
 	Help     bool
+	Version bool
 }
 
 func Parse() ParamsType {
@@ -16,11 +17,8 @@ func Parse() ParamsType {
 	flag.StringVar(&(params.Worlddir), "worlddir", "./", "world directory")
 	flag.IntVar(&(params.Port), "port", 8080, "port to use")
 	flag.BoolVar(&(params.Help), "help", false, "Show help")
+	flag.BoolVar(&(params.Version), "version", false, "Show version")
 	flag.Parse()
 
-	if params.Help {
-		flag.PrintDefaults()
-	}
-
 	return params
 }