#!/usr/bin/env python
# Copyright (C) 2009 Chris Ball <cjb@laptop.org>
# 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 xml output of `be list --xml` into mbox format for browsing
with a mail reader. For example
$ be list --xml --status=all | be-xml-to-mbox | catmutt
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.
"""
#from mailbox import mbox, Message # the mailbox people really want an on-disk copy
import codecs
import email.utils
from libbe.encoding import get_encoding, set_IO_stream_encodings
from libbe.utility import str_to_time as rfc2822_to_gmtime_integer
from time import asctime, gmtime
import types
try: # import core module, Python >= 2.5
from xml.etree import ElementTree
except ImportError: # look for non-core module
from elementtree import ElementTree
from xml.sax.saxutils import unescape
DEFAULT_DOMAIN = "invalid.com"
DEFAULT_EMAIL = "dummy@" + DEFAULT_DOMAIN
DEFAULT_ENCODING = get_encoding()
set_IO_stream_encodings(DEFAULT_ENCODING)
def rfc2822_to_asctime(rfc2822_string):
"""Convert an RFC 2822-fomatted string into a asctime string.
>>> rfc2822_to_asctime("Thu, 01 Jan 1970 00:00:00 +0000")
"Thu Jan 01 00:00:00 1970"
"""
if rfc2822_string == "":
return asctime(gmtime(0))
return asctime(gmtime(rfc2822_to_gmtime_integer(rfc2822_string)))
class LimitedAttrDict (dict):
"""
Dict with error checking, to avoid invalid bug/comment fields.
"""
_attrs = [] # override with list of valid attribute names
def __init__(self, **kwargs):
dict.__init__(self)
for key,value in kwargs.items():
self[key] = value
def __setitem__(self, key, item):
self._validate_key(key)
dict.__setitem__(self, key, item)
def _validate_key(self, key):
if key in self._attrs:
return
elif type(key) not in types.StringTypes:
raise TypeError, "Invalid attribute type %s for '%s'" % (type(key), key)
else:
raise ValueError, "Invalid attribute name '%s'" % key
class Bug (LimitedAttrDict):
_attrs = [u"uuid",
u"short-name",
u"severity",
u"status",
u"assigned",
u"target",
u"reporter",
u"creator",
u"created",
u"summary",
u"comments",
u"extra-strings"]
def print_to_mbox(self):
name,addr = email.utils.parseaddr(self["creator"])
print "From %s %s" % (addr, rfc2822_to_asctime(self["created"]))
print "Message-ID: <%s@%s>" % (self["uuid"], DEFAULT_DOMAIN)
print "Date: %s" % self["created"]
print "From: %s" % self["creator"]
print "Content-Type: %s; charset=%s" % ("text/plain", DEFAULT_ENCODING)
print "Content-Transfer-Encoding: 8bit"
print "Subject: %s: %s" % (self["short-name"], self["summary"])
print ""
print self["summary"]
print ""
if "extra-strings" in self:
print "extra strings:\n ",
print '\n '.join(self["extra_strings"])
print ""
if "comments" in self:
for comment in self["comments"]:
comment.print_to_mbox(self)
def init_from_etree(self, element):
assert element.tag == "bug", element.tag
for field in element.getchildren():
text = unescape(unicode(field.text).decode("unicode_escape").strip())
if field.tag == "comment":
comm = Comment()
comm.init_from_etree(field)
if "comments" in self:
self["comments"].append(comm)
else:
self["comments"] = [comm]
elif field.tag == "extra-string":
if "extra-strings" in self:
self["extra-strings"].append(text)
else:
self["extra-strings"] = [text]
else:
self[field.tag] = text
class Comment (LimitedAttrDict):
_attrs = [u"uuid",
u"alt-id",
u"short-name",
u"in-reply-to",
u"author",
u"date",
u"content-type",
u"body"]
def print_to_mbox(self, bug=None):
if bug == None:
bug = Bug()
bug[u"uuid"] = u"no-uuid"
name,addr = email.utils.parseaddr(self["author"])
print "From %s %s" % (addr, rfc2822_to_asctime(self["date"]))
if "uuid" in self: id = self["uuid"]
elif "alt-id" in self: id = self["alt-id"]
else: id = None
if id != None:
print "Message-ID: <%s@%s>" % (id, DEFAULT_DOMAIN)
print "Date: %s" % self["date"]
print "From: %s" % self["author"]
subject = ""
if "short-name" in self:
subject += self["short-name"]+u": "
if "summary" in bug:
subject += bug["summary"]
else:
subject += u"no-subject"
print "Subject: %s" % subject
if "in-reply-to" not in self.keys():
self["in-reply-to"] = bug["uuid"]
print "In-Reply-To: <%s@%s>" % (self["in-reply-to"], DEFAULT_DOMAIN)
if self["content-type"].startswith("text/"):
print "Content-Transfer-Encoding: 8bit"
print "Content-Type: %s; charset=%s" % (self["content-type"], DEFAULT_ENCODING)
print ""
print self["body"]
else: # content type and transfer encoding already in XML MIME output
print self["body"]
print ""
def init_from_etree(self, element):
assert element.tag == "comment", element.tag
for field in element.getchildren():
text = unescape(unicode(field.text).decode("unicode_escape").strip())
if field.tag == "body":
text+="\n"
self[field.tag] = text
def print_to_mbox(element):
if element.tag == "bug":
b = Bug()
b.init_from_etree(element)
b.print_to_mbox()
elif element.tag == "comment":
c = Comment()
c.init_from_etree(element)
c.print_to_mbox()
elif element.tag in ["bugs", "bug-list"]:
for b_elt in element.getchildren():
b = Bug()
b.init_from_etree(b_elt)
b.print_to_mbox()
elif element.tag in ["comments", "comment-list"]:
for c_elt in element.getchildren():
c = Comment()
c.init_from_etree(c_elt)
c.print_to_mbox()
if __name__ == "__main__":
import sys
if len(sys.argv) == 1: # no filename given, use stdin
xml_unicode = sys.stdin.read()
else:
xml_unicode = codecs.open(sys.argv[1], "r", DEFAULT_ENCODING).read()
xml_str = xml_unicode.encode("unicode_escape").replace(r"\n", "\n")
elist = ElementTree.XML(xml_str)
print_to_mbox(elist)
