+from base64 import b64encode
+import md5
+
+import cgi
+import dbm
+
+from HTMLParser import HTMLParser
+
+entities = {
+ "amp": "&",
+ "lt": "<",
+ "gt": ">",
+ "pound": "£",
+ "copy": "©",
+ "apos": "'",
+ "quot": "\"",
+ "nbsp": " ",
+ }
+
+class HTML2Text(HTMLParser):
+
+ def __init__(self):
+ self.inheadingone = False
+ self.inheadingtwo = False
+ self.inotherheading = False
+ self.inparagraph = True
+ self.inblockquote = False
+ self.inlink = False
+ self.text = u''
+ self.currentparagraph = u''
+ self.headingtext = u''
+ self.blockquote = u''
+ self.inpre = False
+ self.inul = False
+ self.initem = False
+ self.item = u''
+ HTMLParser.__init__(self)
+
+ def handle_starttag(self, tag, attrs):
+ if tag.lower() == "h1":
+ self.inheadingone = True
+ self.inparagraph = False
+ elif tag.lower() == "h2":
+ self.inheadingtwo = True
+ self.inparagraph = False
+ elif tag.lower() in ["h3", "h4", "h5", "h6"]:
+ self.inotherheading = True
+ self.inparagraph = False
+ elif tag.lower() == "a":
+ self.inlink = True
+ elif tag.lower() == "br":
+ self.handle_br()
+ elif tag.lower() == "blockquote":
+ self.inblockquote = True
+ self.text = self.text + u'\n'
+ elif tag.lower() == "p":
+ if self.text != "":
+ self.text = self.text + u'\n\n'
+ if self.inparagraph:
+ self.text = self.text \
+ + u'\n'.join(textwrap.wrap(self.currentparagraph, 70))
+ self.currentparagraph = u''
+ self.inparagraph = True
+ elif tag.lower() == "pre":
+ self.text = self.text + "\n"
+ self.inpre = True
+ self.inparagraph = False
+ self.inblockquote = False
+ elif tag.lower() == "ul":
+ self.item = u''
+ self.inul = True
+ self.text = self.text + "\n"
+ elif tag.lower() == "li" and self.inul:
+ if not self.initem:
+ self.initem = True
+ self.item = u''
+ else:
+ self.text = self.text \
+ + u' * ' \
+ + u'\n '.join([a.strip() for a in \
+ textwrap.wrap(self.item, 67)]) \
+ + u'\n'
+ self.item = u''
+
+ def handle_startendtag(self, tag, attrs):
+ if tag.lower() == "br":
+ self.handle_br()
+
+ def handle_br(self):
+ if self.inparagraph:
+ self.text = self.text \
+ + u'\n'.join( \
+ [a \
+ for a in textwrap.wrap( \
+ self.currentparagraph, 70) \
+ ] \
+ ) \
+ + u'\n'
+ self.currentparagraph = u''
+ elif self.inblockquote:
+ self.text = self.text \
+ + u'\n> ' \
+ + u'\n> '.join( \
+ [a \
+ for a in textwrap.wrap( \
+ self.blockquote.encode("utf-8") \
+ , 68) \
+ ] \
+ ) \
+ + u'\n'
+ self.blockquote = u''
+ else:
+ self.text = self.text + "\n"
+
+ def handle_endtag(self, tag):
+ if tag.lower() == "h1":
+ self.inheadingone = False
+ self.text = self.text \
+ + u'\n\n' \
+ + self.headingtext.encode("utf-8") \
+ + u'\n' \
+ + u'=' * len(self.headingtext.encode("utf-8").strip())
+ self.headingtext = u''
+ elif tag.lower() == "h2":
+ self.inheadingtwo = False
+ self.text = self.text \
+ + u'\n\n' \
+ + self.headingtext.encode("utf-8") \
+ + u'\n' \
+ + u'-' * len(self.headingtext.encode("utf-8").strip())
+ self.headingtext = u''
+ elif tag.lower() in ["h3", "h4", "h5", "h6"]:
+ self.inotherheading = False
+ self.text = self.text \
+ + u'\n\n' \
+ + self.headingtext.encode("utf-8") \
+ + u'\n' \
+ + u'~' * len(self.headingtext.encode("utf-8").strip())
+ self.headingtext = u''
+ elif tag.lower() == "p":
+ self.text = self.text \
+ + u'\n'.join(textwrap.wrap( \
+ self.currentparagraph, 70) \
+ )
+ self.inparagraph = False
+ self.currentparagraph = u''
+ elif tag.lower() == "blockquote":
+ self.text = self.text \
+ + u'\n> ' \
+ + u'\n> '.join( \
+ [a.strip() \
+ for a in textwrap.wrap( \
+ self.blockquote, 68)] \
+ ) \
+ + u'\n'
+ self.inblockquote = False
+ self.blockquote = u''
+ elif tag.lower() == "pre":
+ self.inpre = False
+ elif tag.lower() == "li":
+ self.initem = False
+ if self.item != "":
+ self.text = self.text \
+ + u' * ' \
+ + u'\n '.join( \
+ [a.strip() for a in textwrap.wrap(self.item, 67)]) \
+ + u'\n'
+ self.item = u''
+ elif tag.lower() == "ul":
+ self.inul = False
+
+ def handle_data(self, data):
+ if self.inheadingone or self.inheadingtwo or self.inotherheading:
+ self.headingtext = self.headingtext \
+ + unicode(data, "utf-8").strip() \
+ + u' '
+ elif self.inblockquote:
+ self.blockquote = self.blockquote \
+ + unicode(data, "utf-8").strip() \
+ + u' '
+ elif self.inparagraph:
+ self.currentparagraph = self.currentparagraph \
+ + unicode(data, "utf-8").strip() \
+ + u' '
+ elif self.inul and self.initem:
+ self.item = self.item + unicode(data, "utf-8")
+ elif self.inpre:
+ self.text = self.text + unicode(data, "utf-8")
+ else:
+ self.text = self.text + unicode(data, "utf-8").strip() + u' '
+
+ def handle_entityref(self, name):
+ entity = name
+ if entities.has_key(name.lower()):
+ entity = entities[name.lower()]
+ elif name[0] == "#":
+ entity = unichr(int(name[1:]))
+ else:
+ entity = "&" + name + ";"
+
+ if self.inparagraph:
+ self.currentparagraph = self.currentparagraph \
+ + unicode(entity, "utf-8")
+ elif self.inblockquote:
+ self.blockquote = self.blockquote + unicode(entity, "utf-8")
+ else:
+ self.text = self.text + unicode(entity, "utf-8")
+
+ def gettext(self):
+ data = self.text
+ if self.inparagraph:
+ data = data + "\n".join(textwrap.wrap(self.currentparagraph, 70))
+ return data
+
+def parse_and_deliver(maildir, url, statedir):
+ feedhandle = None
+ headers = None
+ # first check if we know about this feed already
+ feeddb = dbm.open(os.path.join(statedir, "feeds"), "c")
+ # we need all the parts of the url
+ (type, rest) = urllib.splittype(url)
+ (host, path) = urllib.splithost(rest)
+ (host, port) = urllib.splitport(host)
+ if port == None:
+ port = 80
+ if feeddb.has_key(url):
+ data = feeddb[url]
+ data = cgi.parse_qs(data)
+ # now do a head on the feed to see if it's been updated
+ conn = httplib.HTTPConnection("%s:%s" %(host, port))
+ conn.request("HEAD", path)
+ response = conn.getresponse()
+ headers = response.getheaders()
+ ischanged = False
+ try:
+ for header in headers:
+ if header[0] == "content-length":
+ if header[1] != data["content-length"][0]:
+ ischanged = True
+ elif header[0] == "etag":
+ if header[1] != data["etag"][0]:
+ ischanged = True
+ elif header[0] == "last-modified":
+ if header[1] != data["last-modified"][0]:
+ ischanged = True
+ elif header[0] == "content-md5":
+ if header[1] != data["content-md5"][0]:
+ ischanged = True
+ except:
+ ischanged = True
+ if ischanged:
+ conn = httplib.HTTPConnection("%s:%s" %(host, port))
+ conn.request("GET", path)
+ response = conn.getresponse()
+ headers = response.getheaders()
+ feedhandle = response
+ else:
+ return # don't need to do anything, nothings changed.
+ else:
+ conn = httplib.HTTPConnection("%s:%s" %(host, port))
+ conn.request("GET", path)
+ response = None
+ try:
+ response = conn.getresponse()
+ except:
+ print "Failed to fetch feed: %s" %(url)
+ return
+ headers = response.getheaders()
+ feedhandle = response
+
+ fp = feedparser.parse(feedhandle)
+ db = dbm.open(os.path.join(statedir, "seen"), "c")
+ for item in fp["items"]:
+ # have we seen it before?
+ # need to work out what the content is first...
+
+ if item.has_key("content"):
+ content = item["content"][0]["value"]
+ else:
+ content = item["summary"]
+
+ md5sum = md5.md5(content.encode("utf-8")).hexdigest()
+
+ prevmessageid = None
+
+ if db.has_key(url + "|" + item["link"]):
+ data = db[url + "|" + item["link"]]
+ data = cgi.parse_qs(data)
+ if data.has_key("message-id"):
+ prevmessageid = data["message-id"][0]
+ if data["contentmd5"][0] == md5sum:
+ continue
+
+ try:
+ author = item["author"]
+ except:
+ author = url
+
+ # create a basic email message
+ msg = MIMEMultipart("alternative")
+ messageid = "<" \
+ + datetime.datetime.now().strftime("%Y%m%d%H%M") \
+ + "." \
+ + "".join( \
+ [random.choice( \
+ string.ascii_letters + string.digits \
+ ) for a in range(0,6) \
+ ]) + "@" + socket.gethostname() + ">"
+ msg.add_header("Message-ID", messageid)
+ msg.set_unixfrom("\"%s\" <rss2maildir@localhost>" %(url))
+ msg.add_header("From", "\"%s\" <rss2maildir@localhost>" %(author))
+ msg.add_header("To", "\"%s\" <rss2maildir@localhost>" %(url))
+ if prevmessageid:
+ msg.add_header("References", prevmessageid)
+ createddate = datetime.datetime.now() \
+ .strftime("%a, %e %b %Y %T -0000")
+ try:
+ createddate = datetime.datetime(*item["updated_parsed"][0:6]) \
+ .strftime("%a, %e %b %Y %T -0000")
+ except:
+ pass
+ msg.add_header("Date", createddate)
+ msg.add_header("Subject", item["title"])
+ msg.set_default_type("text/plain")
+
+ htmlpart = MIMEText(content.encode("utf-8"), "html", "utf-8")
+ textparser = HTML2Text()
+ textparser.feed(content.encode("utf-8"))
+ textcontent = textparser.gettext()
+ textpart = MIMEText(textcontent.encode("utf-8"), "plain", "utf-8")
+ msg.attach(textpart)
+ msg.attach(htmlpart)
+
+ # start by working out the filename we should be writting to, we do
+ # this following the normal maildir style rules
+ fname = str(os.getpid()) \
+ + "." + socket.gethostname() \
+ + "." + "".join( \
+ [random.choice( \
+ string.ascii_letters + string.digits \
+ ) for a in range(0,10) \
+ ]) + "." \
+ + datetime.datetime.now().strftime('%s')
+ fn = os.path.join(maildir, "tmp", fname)
+ fh = open(fn, "w")
+ fh.write(msg.as_string())
+ fh.close()
+ # now move it in to the new directory
+ newfn = os.path.join(maildir, "new", fname)
+ os.link(fn, newfn)
+ os.unlink(fn)
+
+ # now add to the database about the item
+ if prevmessageid:
+ messageid = prevmessageid + " " + messageid
+ data = urllib.urlencode((
+ ("message-id", messageid), \
+ ("created", createddate), \
+ ("contentmd5", md5sum) \
+ ))
+ db[url + "|" + item["link"]] = data
+
+ if headers:
+ data = []
+ for header in headers:
+ if header[0] in ["content-md5", "etag", "last-modified", "content-length"]:
+ data.append((header[0], header[1]))
+ if len(data) > 0:
+ data = urllib.urlencode(data)
+ feeddb[url] = data
+
+ db.close()
+ feeddb.close()
+
projects / rss2maildir.git / blobdiff