def plain_text(text: str) -> str:
chars = []
raw_chars = list(reversed(validator.fix_one_line_text(caret_decode(text))))
while len(raw_chars):
char = raw_chars.pop()
if char == '%': # special characters
if len(raw_chars) and raw_chars[-1] == '%':
raw_chars.pop() # discard next '%'
if len(raw_chars):
special_char = raw_chars.pop()
# replace or discard formatting code
chars.append(SPECIAL_CHARS_ENCODING.get(special_char, ''))
else: # char is just a single '%'
chars.append(char)
else: # char is what it is, a character
chars.append(char)
return "".join(chars)
def test_caret_decode():
assert caret_decode('') == ''
assert caret_decode('^') == '^' # no match
assert caret_decode('^ ') == '^'
assert caret_decode('abc') == 'abc'
assert caret_decode('ab\\Pc') == 'ab\\Pc'
assert caret_decode('1^J\\P2') == '1\n\\P2'
assert caret_decode('1^J2') == '1\n2'
assert caret_decode('1^M2') == '1\r2'
assert caret_decode('1^M^J2') == '1\r\n2'
assert caret_decode('1^J^M2') == '1\n\r2'
assert caret_decode('abc^ def') == 'abc^def'
assert caret_decode('abc^Idef') == 'abc\tdef'
assert caret_decode('abc^adef') == 'abc!def'
assert caret_decode('abc^ddef') == 'abc$def'
assert caret_decode('abc^zdef') == 'abc:def'
assert caret_decode('abc^@def') == 'abc\0def'
assert caret_decode('abc^^def') == 'abc\x1edef'