fix: filter result if exported data is empty

internal/browingdata/bookmark/bookmark.go

@@ -76,10 +76,23 @@ func getBookmarkChildren(value gjson.Result, w *ChromiumBookmark) (children gjso
 	return children
 }
 
+func bookmarkType(a int64) string {
+	switch a {
+	case 1:
+		return "url"
+	default:
+		return "folder"
+	}
+}
+
 func (c *ChromiumBookmark) Name() string {
 	return "bookmark"
 }
 
+func (c *ChromiumBookmark) Length() int {
+	return len(*c)
+}
+
 type FirefoxBookmark []bookmark
 
 const (
@@ -134,11 +147,6 @@ func (f *FirefoxBookmark) Name() string {
 	return "bookmark"
 }
 
-func bookmarkType(a int64) string {
-	switch a {
-	case 1:
-		return "url"
-	default:
-		return "folder"
-	}
+func (f *FirefoxBookmark) Length() int {
+	return len(*f)
 }

internal/browingdata/browsingdata.go

@@ -24,6 +24,8 @@ type Source interface {
 	Parse(masterKey []byte) error
 
 	Name() string
+
+	Length() int
 }
 
 func New(sources []item.Item) *Data {
@@ -47,6 +49,10 @@ func (d *Data) Output(dir, browserName, flag string) {
 	output := NewOutPutter(flag)
 
 	for _, source := range d.sources {
+		if source.Length() == 0 {
+			// if the length of the export data is 0, then it is not necessary to output
+			continue
+		}
 		filename := fileutil.Filename(browserName, source.Name(), output.Ext())
 
 		f, err := output.CreateFile(dir, filename)

internal/browingdata/cookie/cookie.go

@@ -93,6 +93,10 @@ func (c *ChromiumCookie) Name() string {
 	return "cookie"
 }
 
+func (c *ChromiumCookie) Length() int {
+	return len(*c)
+}
+
 type FirefoxCookie []cookie
 
 const (
@@ -137,3 +141,7 @@ func (f *FirefoxCookie) Parse(masterKey []byte) error {
 func (f *FirefoxCookie) Name() string {
 	return "cookie"
 }
+
+func (f *FirefoxCookie) Length() int {
+	return len(*f)
+}

internal/browingdata/creditcard/creditcard.go

@@ -76,6 +76,10 @@ func (c *ChromiumCreditCard) Name() string {
 	return "creditcard"
 }
 
+func (c *ChromiumCreditCard) Length() int {
+	return len(*c)
+}
+
 type YandexCreditCard []card
 
 func (c *YandexCreditCard) Parse(masterKey []byte) error {
@@ -127,3 +131,7 @@ func (c *YandexCreditCard) Parse(masterKey []byte) error {
 func (c *YandexCreditCard) Name() string {
 	return "creditcard"
 }
+
+func (c *YandexCreditCard) Length() int {
+	return len(*c)
+}

internal/browingdata/download/download.go

@@ -70,6 +70,10 @@ func (c *ChromiumDownload) Name() string {
 	return "download"
 }
 
+func (c *ChromiumDownload) Length() int {
+	return len(*c)
+}
+
 type FirefoxDownload []download
 
 const (
@@ -131,3 +135,7 @@ func (f *FirefoxDownload) Parse(masterKey []byte) error {
 func (f *FirefoxDownload) Name() string {
 	return "download"
 }
+
+func (f *FirefoxDownload) Length() int {
+	return len(*f)
+}

internal/browingdata/extension/extension.go

@@ -50,6 +50,10 @@ func (c *ChromiumExtension) Name() string {
 	return "extension"
 }
 
+func (c *ChromiumExtension) Length() int {
+	return len(*c)
+}
+
 type FirefoxExtension []*extension
 
 func (f *FirefoxExtension) Parse(masterKey []byte) error {
@@ -73,3 +77,7 @@ func (f *FirefoxExtension) Parse(masterKey []byte) error {
 func (f *FirefoxExtension) Name() string {
 	return "extension"
 }
+
+func (f *FirefoxExtension) Length() int {
+	return len(*f)
+}

internal/browingdata/history/history.go

@@ -65,6 +65,10 @@ func (c *ChromiumHistory) Name() string {
 	return "history"
 }
 
+func (c *ChromiumHistory) Length() int {
+	return len(*c)
+}
+
 type FirefoxHistory []history
 
 const (
@@ -119,3 +123,7 @@ func (f *FirefoxHistory) Parse(masterKey []byte) error {
 func (f *FirefoxHistory) Name() string {
 	return "history"
 }
+
+func (f *FirefoxHistory) Length() int {
+	return len(*f)
+}

internal/browingdata/localstorage/localstorage.go

@@ -58,6 +58,10 @@ func (c *ChromiumLocalStorage) Name() string {
 	return "localStorage"
 }
 
+func (c *ChromiumLocalStorage) Length() int {
+	return len(*c)
+}
+
 func (s *storage) fillKey(b []byte) {
 	keys := bytes.Split(b, []byte("\x00"))
 	if len(keys) == 1 && bytes.HasPrefix(keys[0], []byte("META:")) {
@@ -142,3 +146,7 @@ func (s *storage) fillFirefox(originKey, key, value string) {
 func (f *FirefoxLocalStorage) Name() string {
 	return "localStorage"
 }
+
+func (f *FirefoxLocalStorage) Length() int {
+	return len(*f)
+}

internal/browingdata/password/password.go

@@ -90,6 +90,10 @@ func (c *ChromiumPassword) Name() string {
 	return "password"
 }
 
+func (c *ChromiumPassword) Length() int {
+	return len(*c)
+}
+
 type YandexPassword []loginData
 
 const (
@@ -154,6 +158,10 @@ func (c *YandexPassword) Name() string {
 	return "password"
 }
 
+func (c *YandexPassword) Length() int {
+	return len(*c)
+}
+
 type FirefoxPassword []loginData
 
 const (
@@ -224,10 +232,6 @@ func (f *FirefoxPassword) Parse(masterKey []byte) error {
 	return nil
 }
 
-func (f *FirefoxPassword) Name() string {
-	return "password"
-}
-
 func getFirefoxDecryptKey(key4file string) (item1, item2, a11, a102 []byte, err error) {
 	var keyDB *sql.DB
 	keyDB, err = sql.Open("sqlite3", key4file)
@@ -278,3 +282,11 @@ func getFirefoxLoginData(loginJson string) (l []loginData, err error) {
 	}
 	return l, nil
 }
+
+func (f *FirefoxPassword) Name() string {
+	return "password"
+}
+
+func (f *FirefoxPassword) Length() int {
+	return len(*f)
+}