blob: a05451f25d9637a40cdd63c0bc27edc79455a21a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
# Copyright (C) 2002 Python Software Foundation
# Author: barry@zope.com
"""Module containing compatibility functions for Python 2.1.
"""
from __future__ import generators
from __future__ import division
from cStringIO import StringIO
from types import StringTypes
# This function will become a method of the Message class
def walk(self):
"""Walk over the message tree, yielding each subpart.
The walk is performed in depth-first order. This method is a
generator.
"""
yield self
if self.is_multipart():
for subpart in self.get_payload():
for subsubpart in subpart.walk():
yield subsubpart
# Python 2.2 spells floor division //
def _floordiv(i, j):
"""Do a floor division, i/j."""
return i // j
def _isstring(obj):
return isinstance(obj, StringTypes)
# These two functions are imported into the Iterators.py interface module.
# The Python 2.2 version uses generators for efficiency.
def body_line_iterator(msg):
"""Iterate over the parts, returning string payloads line-by-line."""
for subpart in msg.walk():
payload = subpart.get_payload()
if _isstring(payload):
for line in StringIO(payload):
yield line
def typed_subpart_iterator(msg, maintype='text', subtype=None):
"""Iterate over the subparts with a given MIME type.
Use `maintype' as the main MIME type to match against; this defaults to
"text". Optional `subtype' is the MIME subtype to match against; if
omitted, only the main type is matched.
"""
for subpart in msg.walk():
if subpart.get_main_type('text') == maintype:
if subtype is None or subpart.get_subtype('plain') == subtype:
yield subpart
|
