manually add dependency on go-getter

vendor/github.com/ulikunitz/xz/cmd/xb/version-file.go

@@ -0,0 +1,85 @@
+// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"text/template"
+)
+
+const vfUsage = `xb version-file [options] <id>:<path>...
+
+The command creates go file with a version constant. The version string
+contains the contents of the VERSION environment variable or the output
+of git describe.
+
+   -h  prints this message and exits
+   -p  package name (default main)
+   -o  file name of output
+
+`
+
+func versionFileUsage(w io.Writer) {
+	fmt.Fprint(w, vfUsage)
+}
+
+func versionFile() {
+	cmdName := filepath.Base(os.Args[0])
+	log.SetPrefix(fmt.Sprintf("%s: ", cmdName))
+	log.SetFlags(0)
+
+	flag.CommandLine = flag.NewFlagSet(cmdName, flag.ExitOnError)
+	flag.Usage = func() { versionFileUsage(os.Stderr); os.Exit(1) }
+
+	help := flag.Bool("h", false, "")
+	pkg := flag.String("p", "main", "")
+	out := flag.String("o", "", "")
+
+	flag.Parse()
+
+	if *help {
+		versionFileUsage(os.Stdout)
+		os.Exit(0)
+	}
+
+	if *pkg == "" {
+		log.Fatal("option -p must not be empty")
+	}
+
+	var err error
+	w := os.Stdout
+	if *out != "" {
+		if w, err = os.Create(*out); err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	// get the version string
+	version := os.Getenv("VERSION")
+	if version == "" {
+		b, err := exec.Command("git", "describe").Output()
+		if err != nil {
+			log.Fatalf("error %s while executing git describe", err)
+		}
+		version = string(b)
+	}
+	version = strings.TrimSpace(version)
+
+	versionTmpl := `package main
+
+const version = "{{.}}"
+`
+	tmpl := template.Must(template.New("version").Parse(versionTmpl))
+	if err = tmpl.Execute(w, version); err != nil {
+		log.Fatal(err)
+	}
+}