Introduced support for backward-compatible BIP-329 import and BIP-329…

… export.

electrum/gui/qt/main_window.py

@@ -2430,10 +2430,10 @@ def do_export_privkeys(self, fileName, pklist, is_csv):
     def do_import_labels(self):
         def on_import():
             self.need_update.set()
-        import_meta_gui(self, _('labels'), self.wallet.import_labels, on_import)
+        import_meta_gui(self, _('labels'), self.wallet.import_labels, on_import, file_type="jsonp|json")
 
     def do_export_labels(self):
-        export_meta_gui(self, _('labels'), self.wallet.export_labels)
+        export_meta_gui(self, _('labels'), self.wallet.export_labels, file_type="jsonp")
 
     def import_invoices(self):
         import_meta_gui(self, _('invoices'), self.wallet.import_invoices, self.send_tab.invoice_list.update)
@@ -2856,4 +2856,3 @@ def on_swap_result(self, txid):
         else:
             msg += _("Lightning funds were not received.")
             self.show_error_signal.emit(msg)
-

electrum/gui/qt/util.py

@@ -1029,8 +1029,11 @@ def onFileAdded(self, fn):
         raise NotImplementedError()
 
 
-def import_meta_gui(electrum_window: 'ElectrumWindow', title, importer, on_success):
-    filter_ = "JSON (*.json);;All files (*)"
+def import_meta_gui(electrum_window: 'ElectrumWindow', title, importer, on_success, file_type="json"):
+    if file_type == "json":
+        filter_ = "JSON (*.json);;All files (*)"
+    elif file_type == "jsonp|json":
+        filter_ = "JSONP (*.jsonp);;JSON (*.json);;All files (*)"
     filename = getOpenFileName(
         parent=electrum_window,
         title=_("Open {} file").format(title),
@@ -1048,12 +1051,12 @@ def import_meta_gui(electrum_window: 'ElectrumWindow', title, importer, on_succe
         on_success()
 
 
-def export_meta_gui(electrum_window: 'ElectrumWindow', title, exporter):
-    filter_ = "JSON (*.json);;All files (*)"
+def export_meta_gui(electrum_window: 'ElectrumWindow', title, exporter, file_type="json"):
+    filter_ = "{} (*.{});;All files (*)".format(file_type.upper(), file_type)
     filename = getSaveFileName(
         parent=electrum_window,
         title=_("Select file to save your {}").format(title),
-        filename='electrum_{}.json'.format(title),
+        filename='electrum_{}.{}'.format(title, file_type),
         filter=filter_,
         config=electrum_window.config,
     )

electrum/wallet.py

@@ -51,6 +51,7 @@
 
 from .i18n import _
 from .bip32 import BIP32Node, convert_bip32_intpath_to_strpath, convert_bip32_strpath_to_intpath
+from .bip329 import export_bip329_labels, import_bip329_labels, is_json_file
 from .crypto import sha256
 from . import util
 from .util import (NotEnoughFunds, UserCancelled, profiler, OldTaskGroup, ignore_exceptions,
@@ -636,12 +637,18 @@ def set_label(self, name: str, text: str = None) -> bool:
         return changed
 
     def import_labels(self, path):
-        data = read_json_file(path)
-        for key, value in data.items():
-            self.set_label(key, value)
+        if is_json_file(path):
+            # legacy format
+            data = read_json_file(path)
+            for key, value in data.items():
+                self.set_label(key, value)
+        else:
+            import_bip329_labels(path=path, wallet=self)
 
     def export_labels(self, path):
-        write_json_file(path, self.get_all_labels())
+        """ """
+        export_bip329_labels(path=path, wallet=self)
+
 
     def set_fiat_value(self, txid, ccy, text, fx, value_sat):
         if not self.db.get_transaction(txid):