75 lines
2.8 KiB
Python
75 lines
2.8 KiB
Python
import os
|
|
import sys
|
|
import tempfile
|
|
import mimetypes
|
|
import webbrowser
|
|
|
|
# Import the email modules we'll need
|
|
from email import policy
|
|
from email.parser import BytesParser
|
|
|
|
# An imaginary module that would make this work and be safe.
|
|
from imaginary import magic_html_parser
|
|
|
|
# In a real program you'd get the filename from the arguments.
|
|
msg = BytesParser(policy=policy.default).parse(open('outgoing.msg', 'rb'))
|
|
|
|
# Now the header items can be accessed as a dictionary, and any non-ASCII will
|
|
# be converted to unicode:
|
|
print('To:', msg['to'])
|
|
print('From:', msg['from'])
|
|
print('Subject:', msg['subject'])
|
|
|
|
# If we want to print a priview of the message content, we can extract whatever
|
|
# the least formatted payload is and print the first three lines. Of course,
|
|
# if the message has no plain text part printing the first three lines of html
|
|
# is probably useless, but this is just a conceptual example.
|
|
simplest = msg.get_body(preferencelist=('plain', 'html'))
|
|
print()
|
|
print(''.join(simplest.get_content().splitlines(keepends=True)[:3]))
|
|
|
|
ans = input("View full message?")
|
|
if ans.lower()[0] == 'n':
|
|
sys.exit()
|
|
|
|
# We can extract the richest alternative in order to display it:
|
|
richest = msg.get_body()
|
|
partfiles = {}
|
|
if richest['content-type'].maintype == 'text':
|
|
if richest['content-type'].subtype == 'plain':
|
|
for line in richest.get_content().splitlines():
|
|
print(line)
|
|
sys.exit()
|
|
elif richest['content-type'].subtype == 'html':
|
|
body = richest
|
|
else:
|
|
print("Don't know how to display {}".format(richest.get_content_type()))
|
|
sys.exit()
|
|
elif richest['content-type'].content_type == 'multipart/related':
|
|
body = richest.get_body(preferencelist=('html'))
|
|
for part in richest.iter_attachments():
|
|
fn = part.get_filename()
|
|
if fn:
|
|
extension = os.path.splitext(part.get_filename())[1]
|
|
else:
|
|
extension = mimetypes.guess_extension(part.get_content_type())
|
|
with tempfile.NamedTemporaryFile(suffix=extension, delete=False) as f:
|
|
f.write(part.get_content())
|
|
# again strip the <> to go from email form of cid to html form.
|
|
partfiles[part['content-id'][1:-1]] = f.name
|
|
else:
|
|
print("Don't know how to display {}".format(richest.get_content_type()))
|
|
sys.exit()
|
|
with tempfile.NamedTemporaryFile(mode='w', delete=False) as f:
|
|
# The magic_html_parser has to rewrite the href="cid:...." attributes to
|
|
# point to the filenames in partfiles. It also has to do a safety-sanitize
|
|
# of the html. It could be written using html.parser.
|
|
f.write(magic_html_parser(body.get_content(), partfiles))
|
|
webbrowser.open(f.name)
|
|
os.remove(f.name)
|
|
for fn in partfiles.values():
|
|
os.remove(fn)
|
|
|
|
# Of course, there are lots of email messages that could break this simple
|
|
# minded program, but it will handle the most common ones.
|