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Mailbox to HTML conversion using Python 3 + Jinja2 in less than 100 lines (including GPLv3 license)
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| #!/usr/bin/env python3 | |
| # | |
| # Copyright (C) 2016 - Francesco Frassinelli | |
| # | |
| # This program is free software; you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation; either version 3 of the License, or | |
| # (at your option) any later version. | |
| # | |
| # This program is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| # External dependency | |
| import jinja2 | |
| import argparse | |
| import collections | |
| import email.parser, email.policy | |
| import mailbox | |
| import os.path | |
| # Default html template | |
| # Jinja2 syntax: http://jinja.pocoo.org/docs/dev/ | |
| template = jinja2.Template(""" | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>{{ title }}</title> | |
| </head> | |
| <body> | |
| {% for message in messages %} | |
| {% for key, value in message.header %} | |
| {% if key in header_filter %} | |
| <div><strong>{{ key }}</strong>: {{ value }}</div> | |
| {% endif %} | |
| {% endfor %} | |
| <hr/> | |
| {% if message.is_html %} | |
| {{ message.body|safe }} | |
| {% else %} | |
| <pre>{{ message.body }}</pre> | |
| {% endif %} | |
| {% if not loop.last %} | |
| <hr/> | |
| {% endif %} | |
| {% endfor %} | |
| </body> | |
| </html> | |
| """.strip(), trim_blocks=True, lstrip_blocks=True, autoescape=True) | |
| # Command line options | |
| parser = argparse.ArgumentParser() | |
| parser.add_argument('-p', '--plain', action='store_true', | |
| help="prefer plain text over html") | |
| parser.add_argument('-o', '--outfile', nargs='?', | |
| type=argparse.FileType('w'), | |
| default='-', | |
| help='output html file') | |
| parser.add_argument('mbox', type=argparse.FileType('r'), | |
| help='mbox file') | |
| args = parser.parse_args() | |
| # Base information and header filters | |
| info = { | |
| 'title':os.path.basename(args.mbox.name), | |
| 'header_filter':[ | |
| 'From', | |
| 'Date', | |
| ], | |
| 'messages':[], | |
| } | |
| # Mailbox parser | |
| reverse = -1 if args.plain else 1 | |
| preferencelist = ('html', 'plain')[::reverse] | |
| inbox = mailbox.mbox(args.mbox.name) | |
| for index, message in inbox.items(): | |
| message_info = collections.defaultdict(dict) | |
| # Message parser | |
| msg_parser = email.parser.BytesFeedParser(policy=email.policy.default) | |
| msg_parser.feed(message.as_bytes()) | |
| msg = msg_parser.close() | |
| # Header | |
| message_info['header'] = msg.items() | |
| # Body | |
| simplest = msg.get_body(preferencelist=preferencelist) | |
| message_info['is_html'] = simplest.get_content_type() == 'text/html' | |
| message_info['body'] = simplest.get_content() | |
| # Add result to collection | |
| info['messages'].append(message_info) | |
| # Write to file | |
| args.outfile.write(template.render(info)) |
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