issue #56 switch to kingpin for flag processing

main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bytes"
-	"flag"
 	"fmt"
 	"log"
 	"net/http"
@@ -14,6 +13,8 @@ import (
 	"github.com/goreleaser/goreleaser/config"
 	"github.com/goreleaser/goreleaser/context"
 	"github.com/goreleaser/goreleaser/pipeline/defaults"
+
+	"gopkg.in/alecthomas/kingpin.v2"
 )
 
 // given a template, and a config, generate shell script
@@ -174,26 +175,22 @@ func Load(repo string, file string) (project *config.Project, err error) {
 
 func main() {
 	var (
-		source  = flag.String("source", "godownloader", "download source")
-		exe     = flag.String("exe", "", "name of binary, used only in raw")
-		nametpl = flag.String("nametpl", "", "name template, used only in raw")
-		repo    = flag.String("repo", "", "owner/name of repository")
+		repo    = kingpin.Flag("repo", "owner/name or URL of GitHub repository").Required().String()
+		source  = kingpin.Flag("source", "source type [godownloader|raw|equinoxio]").Default("godownloader").String()
+		exe     = kingpin.Flag("exe", "name of binary, used only in raw").String()
+		nametpl = kingpin.Flag("nametpl", "name template, used only in raw").String()
+		file    = kingpin.Arg("file", "??").String()
 	)
 
-	flag.Parse()
-	args := flag.Args()
-	file := ""
-	if len(args) > 0 {
-		file = args[0]
-	}
+	kingpin.Parse()
 	var (
 		out string
 		err error
 	)
 	switch *source {
 	case "godownloader":
 		// https://github.com/goreleaser/godownloader
-		out, err = processGodownloader(*repo, file)
+		out, err = processGodownloader(*repo, *file)
 	case "equinoxio":
 		// https://equinox.io
 		out, err = processEquinoxio(*repo)

scripts/build_samples.sh

@@ -1,17 +1,17 @@
 #!/bin/sh -ex
-./godownloader -repo gohugoio/hugo >samples/godownloader-hugo.sh
-./godownloader -repo goreleaser/goreleaser >samples/godownloader-goreleaser.sh
-./godownloader -repo client9/misspell >samples/godownloader-misspell.sh
-./godownloader -repo tdewolff/minify >samples/godownloader-minify.sh
+./godownloader --repo gohugoio/hugo >samples/godownloader-hugo.sh
+./godownloader --repo goreleaser/goreleaser >samples/godownloader-goreleaser.sh
+./godownloader --repo client9/misspell >samples/godownloader-misspell.sh
+./godownloader --repo tdewolff/minify >samples/godownloader-minify.sh
 
 # good example of multi-build and wrapped directory
-./godownloader -repo https://github.com/alecthomas/gometalinter >samples/godownloader-gometalinter.sh
+./godownloader --repo https://github.com/alecthomas/gometalinter >samples/godownloader-gometalinter.sh
 
 # binary and repo name do not match
-./godownloader -source raw -repo mvdan/sh -exe shfmt >samples/godownloader-shfmt.sh
+./godownloader --source raw --repo mvdan/sh --exe shfmt >samples/godownloader-shfmt.sh
 
 # uses zip
-./godownloader -repo serverless/event-gateway >samples/godownloader-event-gateway.sh
+./godownloader --repo serverless/event-gateway >samples/godownloader-event-gateway.sh
 
 chmod a+x samples/*.sh