#2814: remove deprecated classes from mailbox module. Patch by Humberto Diogenes.

Lib/mailbox.py

@@ -1925,184 +1925,6 @@ def _sync_close(f):
     _sync_flush(f)
     f.close()
 
-## Start: classes from the original module (for backward compatibility).
-
-# Note that the Maildir class, whose name is unchanged, itself offers a next()
-# method for backward compatibility.
-
-class _Mailbox:
-
-    def __init__(self, fp, factory=rfc822.Message):
-        self.fp = fp
-        self.seekp = 0
-        self.factory = factory
-
-    def __iter__(self):
-        return iter(self.next, None)
-
-    def next(self):
-        while 1:
-            self.fp.seek(self.seekp)
-            try:
-                self._search_start()
-            except EOFError:
-                self.seekp = self.fp.tell()
-                return None
-            start = self.fp.tell()
-            self._search_end()
-            self.seekp = stop = self.fp.tell()
-            if start != stop:
-                break
-        return self.factory(_PartialFile(self.fp, start, stop))
-
-# Recommended to use PortableUnixMailbox instead!
-class UnixMailbox(_Mailbox):
-
-    def _search_start(self):
-        while 1:
-            pos = self.fp.tell()
-            line = self.fp.readline()
-            if not line:
-                raise EOFError
-            if line[:5] == 'From ' and self._isrealfromline(line):
-                self.fp.seek(pos)
-                return
-
-    def _search_end(self):
-        self.fp.readline()      # Throw away header line
-        while 1:
-            pos = self.fp.tell()
-            line = self.fp.readline()
-            if not line:
-                return
-            if line[:5] == 'From ' and self._isrealfromline(line):
-                self.fp.seek(pos)
-                return
-
-    # An overridable mechanism to test for From-line-ness.  You can either
-    # specify a different regular expression or define a whole new
-    # _isrealfromline() method.  Note that this only gets called for lines
-    # starting with the 5 characters "From ".
-    #
-    # BAW: According to
-    #http://home.netscape.com/eng/mozilla/2.0/relnotes/demo/content-length.html
-    # the only portable, reliable way to find message delimiters in a BSD (i.e
-    # Unix mailbox) style folder is to search for "\n\nFrom .*\n", or at the
-    # beginning of the file, "^From .*\n".  While _fromlinepattern below seems
-    # like a good idea, in practice, there are too many variations for more
-    # strict parsing of the line to be completely accurate.
-    #
-    # _strict_isrealfromline() is the old version which tries to do stricter
-    # parsing of the From_ line.  _portable_isrealfromline() simply returns
-    # true, since it's never called if the line doesn't already start with
-    # "From ".
-    #
-    # This algorithm, and the way it interacts with _search_start() and
-    # _search_end() may not be completely correct, because it doesn't check
-    # that the two characters preceding "From " are \n\n or the beginning of
-    # the file.  Fixing this would require a more extensive rewrite than is
-    # necessary.  For convenience, we've added a PortableUnixMailbox class
-    # which does no checking of the format of the 'From' line.
-
-    _fromlinepattern = (r"From \s*[^\s]+\s+\w\w\w\s+\w\w\w\s+\d?\d\s+"
-                        r"\d?\d:\d\d(:\d\d)?(\s+[^\s]+)?\s+\d\d\d\d\s*"
-                        r"[^\s]*\s*"
-                        "$")
-    _regexp = None
-
-    def _strict_isrealfromline(self, line):
-        if not self._regexp:
-            import re
-            self._regexp = re.compile(self._fromlinepattern)
-        return self._regexp.match(line)
-
-    def _portable_isrealfromline(self, line):
-        return True
-
-    _isrealfromline = _strict_isrealfromline
-
-
-class PortableUnixMailbox(UnixMailbox):
-    _isrealfromline = UnixMailbox._portable_isrealfromline
-
-
-class MmdfMailbox(_Mailbox):
-
-    def _search_start(self):
-        while 1:
-            line = self.fp.readline()
-            if not line:
-                raise EOFError
-            if line[:5] == '\001\001\001\001\n':
-                return
-
-    def _search_end(self):
-        while 1:
-            pos = self.fp.tell()
-            line = self.fp.readline()
-            if not line:
-                return
-            if line == '\001\001\001\001\n':
-                self.fp.seek(pos)
-                return
-
-
-class MHMailbox:
-
-    def __init__(self, dirname, factory=rfc822.Message):
-        import re
-        pat = re.compile('^[1-9][0-9]*$')
-        self.dirname = dirname
-        # the three following lines could be combined into:
-        # list = map(long, filter(pat.match, os.listdir(self.dirname)))
-        list = os.listdir(self.dirname)
-        list = filter(pat.match, list)
-        list = map(int, list)
-        list.sort()
-        # This only works in Python 1.6 or later;
-        # before that str() added 'L':
-        self.boxes = map(str, list)
-        self.boxes.reverse()
-        self.factory = factory
-
-    def __iter__(self):
-        return iter(self.next, None)
-
-    def next(self):
-        if not self.boxes:
-            return None
-        fn = self.boxes.pop()
-        fp = open(os.path.join(self.dirname, fn), newline='')
-        msg = self.factory(fp)
-        try:
-            msg._mh_msgno = fn
-        except (AttributeError, TypeError):
-            pass
-        return msg
-
-
-class BabylMailbox(_Mailbox):
-
-    def _search_start(self):
-        while 1:
-            line = self.fp.readline()
-            if not line:
-                raise EOFError
-            if line == '*** EOOH ***\n':
-                return
-
-    def _search_end(self):
-        while 1:
-            pos = self.fp.tell()
-            line = self.fp.readline()
-            if not line:
-                return
-            if line == '\037\014\n' or line == '\037':
-                self.fp.seek(pos)
-                return
-
-## End: classes from the original module (for backward compatibility).
-
 
 class Error(Exception):
     """Raised for module-specific errors."""