"""
linelen = 76 # per MIME standards
from email.encoders import encode_base64
encode_base64(msgobj) # what email does normally: leaves bytes
text = msgobj.get_payload() # bytes fails in email pkg on text gen
if isinstance(text, bytes): # payload is bytes in 3.1, str in 3.2 alpha
text = text.decode('ascii') # decode to unicode str so text gen works
lines = [] # split into lines, else 1 massive line
text = text.replace('\n', '') # no \n present in 3.1, but futureproof me!
while text:
line, text = text[:linelen], text[linelen:]
lines.append(line)
msgobj.set_payload('\n'.join(lines))
def fix_text_required(encodingname):
"""
4E: workaround for str/bytes combination errors in email package; MIMEText
requires different types for different Unicode encodings in Python 3.1, due
to the different ways it MIME-encodes some types of text; see Chapter 13;
the only other alternative is using generic Message and repeating much code;
"""
from email.charset import Charset, BASE64, QP
charset = Charset(encodingname) # how email knows what to do for encoding
bodyenc = charset.body_encoding # utf8, others require bytes input data
return bodyenc in (None, QP) # ascii, latin1, others require str
class MailSender(MailTool):
"""
send mail: format a message, interface with an SMTP server;
works on any machine with Python+Inet, doesn't use cmdline mail;
a nonauthenticating client: see MailSenderAuth if login required;
4E: tracesize is num chars of msg text traced: 0=none, big=all;
4E: supports Unicode encodings for main text and text parts;
4E: supports header encoding, both full headers and email names;
"""
def init(self, smtpserver=None, tracesize=256):
self.smtpServerName = smtpserver or mailconfig.smtpservername
self.tracesize = tracesize
def sendMessage(self, From, To, Subj, extrahdrs, bodytext, attaches,
saveMailSeparator=(('=' * 80) + 'PY\n'),
bodytextEncoding='us-ascii',
attachesEncodings=None):
"""
format and send mail: blocks caller, thread me in a GUI;
bodytext is main text part, attaches is list of filenames,
extrahdrs is list of (name, value) tuples to be added;
raises uncaught exception if send fails for any reason;
saves sent message text in a local file if successful;
The mailtools Utility Package | 961