diff options
Diffstat (limited to 'Lib/email/header.py')
| -rw-r--r-- | Lib/email/header.py | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/Lib/email/header.py b/Lib/email/header.py index 786a71f..cc6b278 100644 --- a/Lib/email/header.py +++ b/Lib/email/header.py @@ -29,7 +29,6 @@ MAXLINELEN = 78 USASCII = Charset('us-ascii') UTF8 = Charset('utf-8') -TRANSITIONAL_SPACE = object() # Match encoded-word strings in the form =?charset?q?Hello_World?= ecre = re.compile(r''' @@ -309,6 +308,7 @@ class Header: formatter.feed(line, charset) if len(lines) > 1: formatter.newline() + formatter.add_transition() return str(formatter) def _normalize(self): @@ -341,19 +341,20 @@ class _ValueFormatter: self._current_line = _Accumulator(headerlen) def __str__(self): - # Remove any trailing TRANSITIONAL_SPACE - if len(self._current_line) > 0: - last_line = self._current_line.pop() - if last_line is not TRANSITIONAL_SPACE: - self._current_line.push(last_line) self.newline() return NL.join(self._lines) def newline(self): + end_of_line = self._current_line.pop() + if end_of_line is not None: + self._current_line.push(end_of_line) if len(self._current_line) > 0: self._lines.append(str(self._current_line)) self._current_line.reset() + def add_transition(self): + self._current_line.push(None) + def feed(self, string, charset): # If the string itself fits on the current line in its encoded format, # then add it now and be done with it. @@ -408,7 +409,6 @@ class _ValueFormatter: # There was only one line. return self._current_line.push(last_line) - self._current_line.push(TRANSITIONAL_SPACE) # Everything else are full lines in themselves. for line in encoded_lines: self._lines.append(self._continuation_ws + line) @@ -554,18 +554,20 @@ class _Accumulator: self._current.append(string) def pop(self): + if not self._current: + return None return self._current.pop() def __len__(self): - return sum((len(string) - for string in self._current - if string is not TRANSITIONAL_SPACE), + return sum(((1 if string is None else len(string)) + for string in self._current), self._initial_size) def __str__(self): - return EMPTYSTRING.join( - (' ' if string is TRANSITIONAL_SPACE else string) - for string in self._current) + if self._current and self._current[-1] is None: + self._current.pop() + return EMPTYSTRING.join((' ' if string is None else string) + for string in self._current) def reset(self, string=None): self._current = [] |