speed up attribute collection a lot

src/fenrirscreenreader/screenDriver/ptyDriver.py

@@ -34,27 +34,15 @@ class Terminal:
         self.screen.cursor.y = min(self.screen.cursor.y, self.screen.lines - 1)            
     def dump(self):
         cursor = self.screen.cursor
-        allAttributes = []
         text = '\n'.join(self.screen.display)
-        start = time.time()   
         buffer = self.screen.buffer
-        #buffer = [[[1,1],[1,2]], [[2,1],[2,2]], [[3,1],[3,2]]]
-        #[buffer[x][y] for x in xrange(0,2) for y in xrange(0,1)]
-        #columns = 2
-        #rows = 3
-        #[buffer[x][0] + [False, 'default', 'default'] for line in (buffer[x] for x in range(columns))]        
-        #allAttributes = [[attribute[1:] + [False, 'default', 'default'] for attribute in line] for line in buffer]
-        for y in range(self.screen.lines):
-            line = self.screen.buffer[y]    
-            attributes = [list(char[1:])  + [False, 'default', 'default'] for char in (line[x] for x in range(self.screen.columns))]
-            allAttributes.append(attributes)
-        print(time.time() -start)
+        attributes = [[list(attribute[1:]) + [False, 'default', 'default'] for attribute in line.values()] for line in buffer.values()]
         self.screen.dirty.clear()
         return {"cursor": (cursor.x, cursor.y),
             'lines': self.screen.lines,
             'columns': self.screen.columns,
             "text": text, 
-            'attributes': allAttributes,
+            'attributes': attributes,
             'screen': 'pty'            
         }.copy()