Merge pull request #23 from m-messiah/version

Add -version flag

Author: m-messiah

.travis.yml

@@ -9,8 +9,10 @@ before_install:
   - cpanm --local-lib=~/perl5 --quiet local::lib
   - eval $(perl -I ~/perl5/lib/perl5/ -Mlocal::lib)
   - cpanm --local-lib=~/perl5 --quiet --notest Test::Nginx::Socket
+  - echo "const VERSION = \"${TRAVIS_BRANCH}\"" >> version.go
 script:
   - go build -o ip2geo
+  - ./ip2geo -version
   - ./ip2geo
   - TEST_NGINX_IP2GEO_DIR=$PWD prove t/nginx_geo.t
   - ./ip2geo -lang en -nobase64

app.go

@@ -23,7 +23,12 @@ func main() {
 	maxmindNoCountry := flag.Bool("nocountry", false, "do not add maxmind country maps")
 	quiet := flag.Bool("q", false, "Be quiet - skip [OK]")
 	veryQuiet := flag.Bool("qq", false, "Be very quiet - show only errors")
+	version := flag.Bool("version", false, "Print version information and exit")
 	flag.Parse()
+	if *version {
+		printMessage("ip2geo", "version "+VERSION, "OK")
+		return
+	}
 	if !(*ipgeobase || *tor || *maxmind || *ip2proxyFlag) {
 		// By default, generate all maps
 		*ipgeobase = true

version.go

@@ -0,0 +1 @@
+package main