* code review

src/httpcli/httpcli.go

@@ -155,7 +155,7 @@ func Upload(node *nodetree.NodeLoc) {
 	if opBytes, err := ioutil.ReadAll(stdout); err != nil {
 		log.Fatal(err)
 	} else {
-		fmt.Printf("File uploaded successful : [%v] -> [%v]\n", node.Path, nodetree.StrDst+tmpStrs[1])
+		fmt.Printf("[%v]\n", node.Path)
 		log.Println(string(opBytes))
 	}
 }
@@ -235,6 +235,8 @@ func Download(node *nodetree.NodeRemot) error {
 
 	log.Printf("wget -O %v \"%v\"", strDstFile, jsonRes.Data.Url)
 
+	fmt.Printf("[%v] ", strDstFile)
+
 	res, err := http.Get(jsonRes.Data.Url)
 	if err != nil {
 		fmt.Println("error occurred!")
@@ -252,7 +254,7 @@ func Download(node *nodetree.NodeRemot) error {
 	writer := bufio.NewWriter(file)
 
 	written, _ := io.Copy(writer, reader)
-	fmt.Printf("File download successful : [%v] -> [%v], %v written\n", nodetree.StrSrc+tmpStrs[1], strDstFile, written)
+	fmt.Printf("%v bytes\n", written)
 
 	return nil
 }

src/main.go

@@ -71,6 +71,22 @@ func main() {
 		return
 	}
 
+	if nodetree.StrOp == "download" {
+		_, err := os.Lstat(nodetree.StrDst)
+		if os.IsNotExist(err) {
+			fmt.Printf("target path [%v] not exist\n", nodetree.StrDst)
+			return
+		}
+	}
+
+	if nodetree.StrOp == "upload" {
+		_, err := os.Lstat(nodetree.StrSrc)
+		if os.IsNotExist(err) {
+			fmt.Printf("source path [%v] not exist\n", nodetree.StrSrc)
+			return
+		}
+	}
+
 	_, err := os.Lstat(nodetree.StrToken)
 	if !os.IsNotExist(err) {
 		data, err := ioutil.ReadFile(nodetree.StrToken)