[config] move PrettyPrintEnvEntries

plugins/config/config.go

@@ -37,7 +37,7 @@ func SetMany(appName string, entries map[string]string, restart bool) {
 	}
 	if len(entries) != 0 {
 		common.LogInfo1("Setting config vars")
-		fmt.Println(PrettyPrintEnvEntries("       ", entries))
+		fmt.Println(configenv.PrettyPrintEnvEntries("       ", entries))
 		env.Write()
 		args := append([]string{appName, "set"}, keys...)
 		common.PlugnTrigger("post-config-update", args...)

plugins/config/src/commands/commands.go

@@ -60,7 +60,7 @@ func main() {
 				contextName = appName
 			}
 			common.LogInfo2(contextName + " config vars")
-			fmt.Println(config.PrettyPrintEnvEntries("", env.Map()))
+			fmt.Println(env.Export(configenv.Pretty))
 		}
 	case "config:help":
 	case "help":

plugins/config/src/configenv/configenv.go

@@ -14,6 +14,7 @@ import (
 
 	common "github.com/dokku/dokku/plugins/common"
 	godotenv "github.com/joho/godotenv"
+	"github.com/ryanuber/columnize"
 )
 
 //ExportFormat types of possible exports
@@ -28,6 +29,8 @@ const (
 	DockerArgs
 	//Shell format: env arguments for shell
 	Shell
+	//Pretty format: pretty-printed in columns
+	Pretty
 )
 
 //Env is a representation for global or app environment
@@ -52,6 +55,8 @@ func (e *Env) Export(format ExportFormat) string {
 		return e.DockerArgsString()
 	case Shell:
 		return e.ShellString()
+	case Pretty:
+		return PrettyPrintEnvEntries("", e.Map())
 	default:
 		common.LogFail(fmt.Sprintf("Unknown export format: %v", format))
 		return ""
@@ -242,3 +247,15 @@ func getAppFile(appName string) (string, error) {
 func getGlobalFile() string {
 	return filepath.Join(common.MustGetEnv("DOKKU_ROOT"), "ENV")
 }
+
+//PrettyPrintEnvEntries in columns
+func PrettyPrintEnvEntries(prefix string, entries map[string]string) (representation string) {
+	colConfig := columnize.DefaultConfig()
+	colConfig.Prefix = prefix
+	colConfig.Delim = "\x00"
+	lines := make([]string, 0, len(entries))
+	for k, v := range entries {
+		lines = append(lines, fmt.Sprintf("%s:\x00%s", k, v))
+	}
+	return columnize.Format(lines, colConfig)
+}