Function main

recipes/Python/576807_Send_Email/recipe-576807.py:163–222

Program entry point.

()

    return data

def main():
    """Program entry point."""

    # Store when program started.
    started = datetime.datetime.now()

    # Get parameters supplied to application.
    argParser = getProgramArgumentParser()
    args = argParser.parse_args()

    # Logic for displaying version details or program help.
    if args.version:
        printVersionDetailsAndExit()
    if not (args.smtphost and args.to and args.frm and args.subject and args.body):
        if args.version:
            printVersionDetailsAndExit()
        argParser.print_help()
        sys.exit(SYS_EXIT_CODE_CMD_LINE_ERROR)

    # Process program arguments to get email parts.
    # From can only have one value regardless if stored in file or not (first line in file used).
    fromVal = getFileContentsOrParameterValue(args.frm)[0]
    toData = getFileContentsOrParameterValue(args.to)
    subjectVal = getFileContentsOrParameterValue(args.subject)[0]
    bodyData = getFileContentsOrParameterValue(args.body)
    smtpHostVal = getFileContentsOrParameterValue(args.smtphost)[0]

    # Build multipart MIME message (email).
    multipartMimeMsg = email.mime.multipart.MIMEMultipart()
    multipartMimeMsg['Date'] = email.utils.formatdate(localtime=True)
    multipartMimeMsg['From'] = fromVal
    multipartMimeMsg['To'] = COMMA_SPACE.join(toData)
    multipartMimeMsg['Subject'] = subjectVal
    multipartMimeMsg.attach(email.mime.text.MIMEText(email.utils.CRLF.join(bodyData)))

    # Process optional arguments.
    if args.cc:
        ccData = getFileContentsOrParameterValue(args.cc)
        multipartMimeMsg['Cc'] = COMMA_SPACE.join(ccData)
        toData.extend(ccData) # TODO: check?
    # TODO: FUNC_BCC
    #if args.bcc:
    #    bccData = getFileContentsOrParameterValue(args.bcc)
    #    multipartMimeMsg['Bcc'] = COMMA_SPACE.join(bccData)
    #    toData.extend(bccData) # TODO: similar to CC but is blindness enforced?

    # Python 3.3 supports with statement (context manager) for smtplib.SMTP().
    # http://docs.python.org/dev/library/smtplib.html
    # with smtplib.SMTP(smtpHostVal) as smtpSvr:
    try:
        smtpSvr = smtplib.SMTP(smtpHostVal)
        if args.debug:
            # Increase display verbosity.
            smtpSvr.set_debuglevel(1)
        smtpSvr.sendmail(fromVal, toData, multipartMimeMsg.as_string())
    finally:
        smtpSvr.quit()