#68 Add rule for switching layout

thefuck/rules/switch_lang.py

@@ -0,0 +1,29 @@
+# -*- encoding: utf-8 -*-
+
+target_layout = '''qwertyuiop[]asdfghjkl;'zxcvbnm,./QWERTYUIOP{}ASDFGHJKL:"ZXCVBNM<>?'''
+
+source_layouts = [u'''йцукенгшщзхъфывапролджэячсмитьбю.ЙЦУКЕНГШЩЗХЪФЫВАПРОЛДЖЭЯЧСМИТЬБЮ,''']
+
+
+def _get_matched_layout(command):
+    for source_layout in source_layouts:
+        if all([ch in source_layout or ch in '-_'
+                for ch in command.script.split(' ')[0]]):
+            return source_layout
+
+
+def match(command, settings):
+    return 'not found' in command.stderr and _get_matched_layout(command)
+
+
+def _switch(ch, layout):
+    if ch in layout:
+        return target_layout[layout.index(ch)]
+    else:
+        return ch
+
+
+def get_new_command(command, settings):
+    matched_layout = _get_matched_layout(command)
+    return ''.join(_switch(ch, matched_layout) for ch in command.script)
+