gui: add --dry|-d

alacritty_config_gui.py

@@ -698,13 +698,16 @@ class KeyBindings(ConfigWidget):
 
 
 class Config(QtWidgets.QWidget):
-    def __init__(self, config):
+    def __init__(self, config, dry=False):
         super().__init__()
-        self.layout = QtWidgets.QVBoxLayout()
         self.config = config
+        self.dry = dry
+
+        self.layout = QtWidgets.QVBoxLayout()
+        self.setLayout(self.layout)
+
         self.add_tabs()
         self.add_buttons()
-        self.setLayout(self.layout)
 
     def add_tabs(self):
         self.tabs = QtWidgets.QTabWidget()
@@ -746,19 +749,27 @@ class Config(QtWidgets.QWidget):
         return state
 
     def save(self):
-        state = self.gather_state()
+        state = yaml.dump(self.gather_state())
+        if self.dry:
+            print(state)
+        else:
             with open(ALACRITTY_CONFIG, 'w+') as f:
-            f.write(yaml.dump(state))
+                f.write(state)
         sys.exit()
 
 
 def main():
+    dry = False
+    if len(sys.argv) == 2 and sys.argv[1] in ['--dry', '-d']:
+        dry = True
+
     app = QtWidgets.QApplication([NAME])
     app.setApplicationName(NAME)
+
+    window = QtWidgets.QMainWindow()
     with open(ALACRITTY_CONFIG) as f:
         config = yaml.safe_load(f.read())
-    window = QtWidgets.QMainWindow()
-    window.setCentralWidget(Config(config))
+    window.setCentralWidget(Config(config, dry=dry))
     window.setGeometry(
         QtWidgets.QStyle.alignedRect(
             QtCore.Qt.LeftToRight,
@@ -771,6 +782,7 @@ def main():
     window.setWindowTitle(NAME)
     window.setUnifiedTitleAndToolBarOnMac(True)
     window.show()
+
     app.exec_()