Merge pull request #121 from cristiklein/popper-init-folder

Popper init folder

build-me.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+set -e
+
+if [ -z "`which docker`" ]; then
+    echo "Could not find docker." >&2
+    echo "Please use the following script to install it: https://get.docker.com/." >&2
+    exit 1
+fi
+
+docker run --rm -v `pwd`/popper:/app -w /app treeder/go vendor
+docker run --rm -v `pwd`/popper:/app -w /app treeder/go build
+
+echo "Success. Popper is available at 'popper/app'."
+echo "Note that the executable requires libc-musl: https://www.musl-libc.org/."

popper/init.go

@@ -3,18 +3,24 @@ package main
 import (
 	"fmt"
 	"log"
+	"os"
 
 	"github.com/codeskyblue/go-sh"
 	"github.com/spf13/cobra"
 )
 
 var initCmd = &cobra.Command{
-	Use:   "init",
+	Use:   "init [<folder>]",
 	Short: "Initializes a popper repository.",
-	Long:  ``,
+	Long:  "If <folder> is given then the repository is created in that folder, otherwise in the current directory.",
 	Run: func(cmd *cobra.Command, args []string) {
-		if len(args) != 0 {
-			log.Fatalln("This command doesn't take arguments.")
+		if len(args) > 1 {
+			log.Fatalln("This command takes at most one argument.")
+		}
+
+		if len(args) == 1 {
+			os.MkdirAll(args[0], 0777);
+			os.Chdir(args[0]);
 		}
 
 		// check for git repo and popperized repo
@@ -37,7 +43,8 @@ var initCmd = &cobra.Command{
 			log.Fatalln(err)
 		}
 
-		fmt.Println("Initialized Popper repository.")
+		cwd, _ := os.Getwd()
+		fmt.Println("Initialized Popper repository in '" + cwd + "'.")
 	},
 }