feat: export in a file

CHANGELOG.md

@@ -11,6 +11,10 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 - Test build with travis
 
+### Changed
+
+- Export in a file
+
 ## v1.1.0 - 2019-07-23
 
 ### Added

gpm/cli.go

@@ -298,5 +298,10 @@ func (c *Cli) ExportWallet() {
     c.error(fmt.Sprintf("%s", err))
   }
 
-  fmt.Println(data)
+  err = ioutil.WriteFile(*EXPORT, data, 0600)
+  if err != nil {
+    c.error(fmt.Sprintf("%s", err))
+  }
+
+  fmt.Println("the export was successful")
 }

gpm/main.go

@@ -37,8 +37,8 @@ var(
   DIGIT   = flag.Bool("digit", false, "use digit to generate a random password")
   LETTER  = flag.Bool("letter", false, "use letter to generate a random password")
   SPECIAL = flag.Bool("special", false, "use special chars to generate a random password")
-  EXPORT  = flag.Bool("export", false, "export a wallet in json format")
+  EXPORT  = flag.String("export", "", "json file path to export a wallet")
-  IMPORT  = flag.String("import", "", "import entries from a json file")
+  IMPORT  = flag.String("import", "", "json file path to import entries")
   HELP    = flag.Bool("help", false, "print this help message")
 )
 
@@ -65,7 +65,7 @@ func Run() {
     cli.deleteEntry()
   } else if *IMPORT != "" {
     cli.ImportWallet()
-  } else if *EXPORT {
+  } else if *EXPORT != "" {
     cli.ExportWallet()
   }
 }

gpm/wallet.go

@@ -210,11 +210,11 @@ func (w *Wallet) Import(data []byte) error {
 }
 
 // Export a wallet to json
-func (w *Wallet) Export() (string, error) {
+func (w *Wallet) Export() ([]byte, error) {
   data, err := json.Marshal(&w.Entries)
   if err != nil {
-    return "", err
+    return []byte{}, err
   }
 
-  return string(data), nil
+  return data, nil
 }