change structure

Author: tanaka0325

kadai1/tanaka0325/README.md

@@ -24,7 +24,7 @@
 
 ```zsh
 # build
-$ go build -o ./imgconv
+$ go build -o imgconv ./cmd/imgconv
 
 # display help
 $ ./imgconv -h

kadai1/tanaka0325/imgconv.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	"github.com/gopherdojo/dojo8/kadai1/tanaka0325/imgconv"
+)
+
+func main() {
+	imgconv.Run()
+}

kadai1/tanaka0325/imgconv/cmd/imgconv/main.go

@@ -1,4 +1,4 @@
-package converter
+package imgconv
 
 import (
 	"fmt"

kadai1/tanaka0325/converter/conv_image.go renamed to kadai1/tanaka0325/imgconv/conv_image.go

@@ -1,4 +1,4 @@
-package converter
+package imgconv
 
 import "errors"
 

kadai1/tanaka0325/converter/exts.go renamed to kadai1/tanaka0325/imgconv/exts.go

@@ -1,4 +1,4 @@
-module github.com/gopherdojo/dojo8/kadai1/tanaka0325
+module github.com/gopherdojo/dojo8/kadai1/tanaka0325/imgconv
 
 go 1.14
 

kadai1/tanaka0325/go.mod renamed to kadai1/tanaka0325/imgconv/go.mod

@@ -1,4 +1,4 @@
-package converter
+package imgconv
 
 import (
 	"flag"
@@ -9,18 +9,23 @@ import (
 	"strings"
 )
 
-// flags
 var (
+	// flags
+	f      = flag.String("f", "jpg", "file extention before convert")
+	t      = flag.String("t", "png", "file extention after convert")
+	dryRun = flag.Bool("n", false, "dry run")
+
+	// allow extensions
 	allowedExts = exts{"png", "jpg", "jpeg", "gif", "bmp", "tiff", "tif"}
-	f           = flag.String("f", "jpg", "file extention before convert")
-	t           = flag.String("t", "png", "file extention after convert")
-	dryRun      = flag.Bool("n", false, "dry run")
 )
 
-// Convert is to convert image file format
-func Convert() {
-	// check options ext
+func init() {
 	flag.Parse()
+}
+
+// Run is to convert image file format
+func Run() {
+	// check options ext
 	to := strings.ToLower(*t)
 	from := strings.ToLower(*f)
 	targetExts := []string{to, from}