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+#!/usr/bin/env python
+# Copyright (C) 2009 W. Trevor King <wking@drexel.edu>
+#
+# 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 2 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+"""
+Convert an mbox into xml suitable for input into be.
+ $ be-mbox-to-xml file.mbox | be import-xml -c <ID> -
+mbox is a flat-file format, consisting of a series of messages.
+Messages begin with a a From_ line, followed by RFC 822 email,
+followed by a blank line.
+"""
+
+import base64
+import email.utils
+from libbe.encoding import get_encoding, set_IO_stream_encodings
+from libbe.utility import time_to_str
+from mailbox import mbox, Message # the mailbox people really want an on-disk copy
+from time import asctime, gmtime, mktime
+import types
+from xml.sax.saxutils import escape
+
+DEFAULT_ENCODING = get_encoding()
+set_IO_stream_encodings(DEFAULT_ENCODING)
+
+KNOWN_IDS = []
+
+def normalize_email_address(address):
+ """
+ Standardize whitespace, etc.
+ """
+ addr = email.utils.formataddr(email.utils.parseaddr(address))
+ if len(addr) == 0:
+ return None
+ return addr
+
+def normalize_RFC_2822_date(date):
+ """
+ Some email clients write non-RFC 2822-compliant date tags like:
+ Fri, 18 Sep 2009 08:49:02 -0400 (EDT)
+ with the non-standard (EDT) timezone name. This funtion attempts
+ to deal with such inconsistencies.
+ """
+ time_tuple = email.utils.parsedate(date)
+ assert time_tuple != None, \
+ 'unparsable date: "%s"' % date
+ return time_to_str(mktime(time_tuple))
+
+def comment_message_to_xml(message, fields=None):
+ if fields == None:
+ fields = {}
+ new_fields = {}
+ new_fields[u'alt-id'] = message[u'message-id']
+ new_fields[u'in-reply-to'] = message[u'in-reply-to']
+ new_fields[u'author'] = normalize_email_address(message[u'from'])
+ new_fields[u'date'] = message[u'date']
+ if new_fields[u'date'] != None:
+ new_fields[u'date'] = normalize_RFC_2822_date(new_fields[u'date'])
+ new_fields[u'content-type'] = message.get_content_type()
+ for k,v in new_fields.items():
+ if v != None and type(v) != types.UnicodeType:
+ fields[k] = unicode(v, encoding=DEFAULT_ENCODING)
+ elif v == None and k in fields:
+ new_fields[k] = fields[k]
+ for k,v in fields.items():
+ if k not in new_fields:
+ new_fields.k = fields[k]
+ fields = new_fields
+
+ if fields[u'in-reply-to'] == None:
+ if message[u'references'] != None:
+ refs = message[u'references'].split()
+ for ref in refs: # search for a known reference id.
+ if ref in KNOWN_IDS:
+ fields[u'in-reply-to'] = ref
+ break
+ if fields[u'in-reply-to'] == None and len(refs) > 0:
+ fields[u'in-reply-to'] = refs[0] # default to the first
+ else: # check for mutliple in-reply-to references.
+ refs = fields[u'in-reply-to'].split()
+ found_ref = False
+ for ref in refs: # search for a known reference id.
+ if ref in KNOWN_IDS:
+ fields[u'in-reply-to'] = ref
+ found_ref = True
+ break
+ if found_ref == False and len(refs) > 0:
+ fields[u'in-reply-to'] = refs[0] # default to the first
+
+ if fields[u'alt-id'] != None:
+ KNOWN_IDS.append(fields[u'alt-id'])
+
+ if message.is_multipart():
+ ret = []
+ alt_id = fields[u'alt-id']
+ from_str = fields[u'author']
+ date = fields[u'date']
+ for m in message.walk():
+ if m == message:
+ continue
+ fields[u'author'] = from_str
+ fields[u'date'] = date
+ if len(ret) > 0: # we've added one part already
+ fields.pop(u'alt-id') # don't pass alt-id to other parts
+ fields[u'in-reply-to'] = alt_id # others respond to first
+ ret.append(comment_message_to_xml(m, fields))
+ return u'\n'.join(ret)
+
+ charset = message.get_content_charset(DEFAULT_ENCODING).lower()
+ #assert charset == DEFAULT_ENCODING.lower(), \
+ # u"Unknown charset: %s" % charset
+
+ if message[u'content-transfer-encoding'] == None:
+ encoding = DEFAULT_ENCODING
+ else:
+ encoding = message[u'content-transfer-encoding'].lower()
+ body = message.get_payload(decode=True) # attempt to decode
+ assert body != None, "Unable to decode?"
+ if fields[u'content-type'].startswith(u"text/"):
+ body = unicode(body, encoding=charset).rstrip(u'\n')
+ else:
+ body = base64.encode(body)
+ fields[u'body'] = body
+ lines = [u"<comment>"]
+ for tag,body in fields.items():
+ if body != None:
+ ebody = escape(body)
+ lines.append(u" <%s>%s</%s>" % (tag, ebody, tag))
+ lines.append(u"</comment>")
+ return u'\n'.join(lines)
+
+def main(mbox_filename):
+ mb = mbox(mbox_filename)
+ print u'<?xml version="1.0" encoding="%s" ?>' % DEFAULT_ENCODING
+ print u"<be-xml>"
+ for message in mb:
+ print comment_message_to_xml(message)
+ print u"</be-xml>"
+
+
+if __name__ == "__main__":
+ import sys
+ main(sys.argv[1])