Uninvert inverted text

tests.py

@@ -56,6 +56,7 @@ from follow import clear_followers
 from follow import send_follow_request_via_server
 from follow import send_unfollow_request_via_server
 from siteactive import site_is_active
+from utils import uninvert_text
 from utils import get_url_from_post
 from utils import date_from_string_format
 from utils import date_utcnow
@@ -8584,6 +8585,37 @@ def _test_book_link(base_dir: str):
         shutil.rmtree(base_dir, ignore_errors=False, onerror=None)
 
 
+def _test_uninvert():
+    print('uninvert')
+    inverted_text = 'abcdefghijklmnopqrstuvwxyz'
+    uninverted_text = uninvert_text(inverted_text)
+    if uninverted_text != inverted_text:
+        print('inverted:   ' + inverted_text)
+        print('uninverted: ' + uninverted_text)
+    assert uninverted_text == inverted_text
+
+    inverted_text = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+    uninverted_text = uninvert_text(inverted_text)
+    if uninverted_text != inverted_text:
+        print('inverted:   ' + inverted_text)
+        print('uninverted: ' + uninverted_text)
+    assert uninverted_text == inverted_text
+
+    inverted_text = 'ʍǝɹpuɐ'
+    uninverted_text = uninvert_text(inverted_text)
+    if uninverted_text != 'andrew':
+        print('inverted:   ' + inverted_text)
+        print('uninverted: ' + uninverted_text)
+    assert uninverted_text == 'andrew'
+
+    inverted_text = '˙ʇsǝʇ ɐ sı sıɥ⊥'
+    uninverted_text = uninvert_text(inverted_text)
+    if uninverted_text != 'This is a test.':
+        print('inverted:   ' + inverted_text)
+        print('uninverted: ' + uninverted_text)
+    assert uninverted_text == 'This is a test.'
+
+
 def run_all_tests():
     base_dir = os.getcwd()
     print('Running tests...')
@@ -8601,6 +8633,7 @@ def run_all_tests():
     _test_checkbox_names()
     _test_thread_functions()
     _test_functions()
+    _test_uninvert()
     _test_book_link(base_dir)
     _test_dateformat()
     _test_is_right_to_left()

utils.py

@@ -154,6 +154,83 @@ def get_attributed_to(field) -> str:
     return None
 
 
+def uninvert_text(text: str) -> str:
+    """uninverts inverted text
+    """
+    if len(text) < 4:
+        return text
+
+    flip_table = {
+        '\u0021': '\u00A1',
+        '\u0022': '\u201E',
+        '\u0026': '\u214B',
+        '\u002E': '\u02D9',
+        '\u0033': '\u0190',
+        '\u0034': '\u152D',
+        '\u0037': '\u2C62',
+        '\u003B': '\u061B',
+        '\u003F': '\u00BF',
+        '\u0041': '\u2200',
+        '\u0042': '\u10412',
+        '\u0043': '\u2183',
+        '\u0044': '\u25D6',
+        '\u0045': '\u018E',
+        '\u0046': '\u2132',
+        '\u0047': '\u2141',
+        '\u004A': '\u017F',
+        '\u004B': '\u22CA',
+        '\u004C': '\u2142',
+        '\u004D': '\u0057',
+        '\u004E': '\u1D0E',
+        '\u0050': '\u0500',
+        '\u0051': '\u038C',
+        '\u0052': '\u1D1A',
+        '\u0054': '\u22A5',
+        '\u0055': '\u2229',
+        '\u0056': '\u1D27',
+        '\u0059': '\u2144',
+        '\u005B': '\u005D',
+        '\u005F': '\u203E',
+        '\u0061': '\u0250',
+        '\u0062': '\u0071',
+        '\u0063': '\u0254',
+        '\u0064': '\u0070',
+        '\u0065': '\u01DD',
+        '\u0066': '\u025F',
+        '\u0067': '\u0183',
+        '\u0068': '\u0265',
+        '\u0069': '\u0131',
+        '\u006A': '\u027E',
+        '\u006B': '\u029E',
+        '\u006C': '\u0283',
+        '\u006D': '\u026F',
+        '\u006E': '\u0075',
+        '\u0072': '\u0279',
+        '\u0074': '\u0287',
+        '\u0076': '\u028C',
+        '\u0077': '\u028D',
+        '\u0079': '\u028E',
+        '\u203F': '\u2040',
+        '\u2234': '\u2235'
+    }
+
+    matches = 0
+    possible_result = ''
+    for ch_test in text:
+        ch_result = ch_test
+        for ch1, ch_inv in flip_table.items():
+            if ch_test == ch_inv:
+                matches += 1
+                ch_result = ch1
+                break
+        possible_result = ch_result + possible_result
+
+    result = text
+    if matches > len(text)/2:
+        result = possible_result
+    return result
+
+
 def _standardize_text_range(text: str,
                             range_start: int, range_end: int,
                             offset: str) -> str:
@@ -209,7 +286,7 @@ def standardize_text(text: str) -> str:
         offset = char_range[1]
         text = _standardize_text_range(text, range_start, range_end, offset)
 
-    return text
+    return uninvert_text(text)
 
 
 def remove_eol(line: str):