]> git.sommitrealweird.co.uk Git - rss2maildir.git/blobdiff - rss2maildir.py
Add basic HTML -> plain text parser
[rss2maildir.git] / rss2maildir.py
index 41654dd5fccc35da406bc754665d54558f6729a4..ff7be81b84c4f0cdb97c1b95d7b1742a1f9d96ee 100755 (executable)
@@ -1,4 +1,5 @@
 #!/usr/bin/python
+# coding=utf8
 
 import mailbox
 import sys
@@ -6,9 +7,161 @@ import os
 import stat
 import urllib
 
+import feedparser
+
+from email.MIMEMultipart import MIMEMultipart
+from email.MIMEText import MIMEText
+
+import datetime
+import random
+import string
+
+import socket
+
 from optparse import OptionParser
 from ConfigParser import SafeConfigParser
 
+from base64 import b64encode
+import md5
+
+import cgi
+import dbm
+
+from HTMLParser import HTMLParser
+
+entities = {
+    "amp": "&",
+    "lt": "<",
+    "gt": ">",
+    "pound": "£",
+    "copy": "©",
+    "apos": "'",
+    "quote": "\"",
+    }
+
+class HTML2Text(HTMLParser):
+    
+    def __init__(self):
+        self.inheadingone = False
+        self.inheadingtwo = False
+        self.inotherheading = False
+        self.inlink = False
+        self.text = ""
+        self.headingtext = ""
+        HTMLParser.__init__(self)
+
+    def handle_starttag(self, tag, attrs):
+        if tag.lower() == "h1":
+            self.inheadingone = True
+        elif tag.lower() == "h2":
+            self.inheadingtwo = True
+        elif tag.lower() in ["h3", "h4", "h5", "h6"]:
+            self.inotherheading = True
+        elif tag.lower() == "a":
+            self.inlink = True
+        elif tag.lower() == "br":
+            self.text = self.text + "\n"
+        elif tag.lower() == "p":
+            if self.text != "":
+                self.text = self.text + "\n\n"
+
+    def handle_startendtag(self, tag, attrs):
+        if tag.lower() == "br":
+            self.text = self.text + "\n"
+
+    def handle_endtag(self, tag):
+        if tag.lower() == "h1":
+            self.inheadingone = False
+            self.text = self.text + self.headingtext + "\n" + "=" * len(self.headingtext)
+            self.headingtext = ""
+        elif tag.lower() == "h2":
+            self.inheadingtwo = False
+            self.text = self.text + self.headingtext + "\n" + "-" * len(self.headingtext)
+            self.headingtext = ""
+        elif tag.lower() in ["h3", "h4", "h5", "h6"]:
+            self.inotherheading = False
+            self.text = self.text + self.headingtext + "\n" + "~" * len(self.headingtext)
+            self.headingtext = ""
+
+    def handle_data(self, data):
+        if not self.inheadingone and not self.inheadingtwo and not self.inotherheading:
+            self.text = self.text + data.strip() + " "
+        else:
+            self.headingtext = self.headingtext + data.strip() + " "
+
+    def handle_entityref(self, name):
+        if entities.has_key(name.lower()):
+            self.text = self.text + entities[name.lower()]
+        else:
+            self.text = self.text + "&" + name + ";"
+
+    def gettext(self):
+        return self.text
+
+def parse_and_deliver(maildir, url, statedir):
+    md = mailbox.Maildir(maildir)
+    fp = feedparser.parse(url)
+    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("utf8")).hexdigest()
+
+        if db.has_key(item["link"]):
+            data = db[item["link"]]
+            data = cgi.parse_qs(data)
+            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))
+        createddate = datetime.datetime(*item["updated_parsed"][0:6]).strftime("%a, %e %b %Y %T -0000")
+        msg.add_header("Date", createddate)
+        msg.add_header("Subject", item["title"])
+        msg.set_default_type("text/plain")
+
+        htmlpart = MIMEText(content.encode("utf8"), "html", "utf8")
+        textparser = HTML2Text()
+        textparser.feed(content.encode("utf8"))
+        textcontent = textparser.gettext()
+        textpart = MIMEText(textcontent, "plain", "utf8")
+        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
+        data = urllib.urlencode((("message-id", messageid), ("created", createddate), ("contentmd5", md5sum)))
+        db[item["link"]] = data
+
+    db.close()
+
 # first off, parse the command line arguments
 
 oparser = OptionParser()
@@ -16,6 +169,10 @@ oparser.add_option(
     "-c", "--conf", dest="conf",
     help="location of config file"
     )
+oparser.add_option(
+    "-s", "--statedir", dest="statedir",
+    help="location of directory to store state in"
+    )
 
 (options, args) = oparser.parse_args()
 
@@ -52,6 +209,49 @@ scp = SafeConfigParser()
 scp.read(configfile)
 
 maildir_root = "RSSMaildir"
+state_dir = "state"
+
+if options.statedir != None:
+    state_dir = options.statedir
+    try:
+        mode = os.stat(state_dir)[stat.ST_MODE]
+        if not stat.S_ISDIR(mode):
+            sys.stderr.write("State directory (%s) is not a directory\n" %(state_dir))
+            sys.exit(1)
+    except:
+        # try to make the directory
+        try:
+            os.mkdir(state_dir)
+        except:
+            sys.stderr.write("Couldn't create statedir %s" %(state_dir))
+            sys.exit(1)
+elif scp.has_option("general", "state_dir"):
+    new_state_dir = scp.get("general", "state_dir")
+    try:
+        mode = os.stat(state_dir)[stat.ST_MODE]
+        if not stat.S_ISDIR(mode):
+            sys.stderr.write("State directory (%s) is not a directory\n" %(state_dir))
+            sys.exit(1)
+    except:
+        # try to create it
+        try:
+            os.mkdir(new_state_dir)
+            state_dir = new_state_dir
+        except:
+            sys.stderr.write("Couldn't create state directory %s\n" %(new_state_dir))
+            sys.exit(1)
+else:
+    try:
+        mode = os.stat(state_dir)[stat.ST_MODE]
+        if not stat.S_ISDIR(mode):
+            sys.stderr.write("State directory %s is not a directory\n" %(state_dir))
+            sys.exit(1)
+    except:
+        try:
+            os.mkdir(state_dir)
+        except:
+            sys.stderr.write("State directory %s could not be created\n" %(state_dir))
+            sys.exit(1)
 
 if scp.has_option("general", "maildir_root"):
     maildir_root = scp.get("general", "maildir_root")
@@ -94,23 +294,36 @@ for section in feeds:
             except:
                 os.mkdir(os.path.join(maildir, "cur"))
                 if not stat.S_ISDIR(mode):
-                    sys.stderr.write("Broken maildir: %s" %(maildir))
+                    sys.stderr.write("Broken maildir: %s\n" %(maildir))
             try:
                 mode = os.stat(os.path.join(maildir, "tmp"))[stat.ST_MODE]
             except:
                 os.mkdir(os.path.join(maildir, "tmp"))
                 if not stat.S_ISDIR(mode):
-                    sys.stderr.write("Broken maildir: %s" %(maildir))
+                    sys.stderr.write("Broken maildir: %s\n" %(maildir))
             try:
                 mode = os.stat(os.path.join(maildir, "new"))[stat.ST_MODE]
                 if not stat.S_ISDIR(mode):
-                    sys.stderr.write("Broken maildir: %s" %(maildir))
+                    sys.stderr.write("Broken maildir: %s\n" %(maildir))
             except:
                 os.mkdir(os.path.join(maildir, "new"))
         else:
-            sys.stderr.write("Broken maildir: %s" %(maildir))
+            sys.stderr.write("Broken maildir: %s\n" %(maildir))
     except:
-        os.mkdir(maildir)
-        os.mkdir(os.path.join(maildir, "new"))
-        os.mkdir(os.path.join(maildir, "cur"))
-        os.mkdir(os.path.join(maildir, "tmp"))
+        try:
+            os.mkdir(maildir)
+        except:
+            sys.stderr.write("Couldn't create root maildir %s\n" %(maildir))
+            sys.exit(1)
+        try:
+            os.mkdir(os.path.join(maildir, "new"))
+            os.mkdir(os.path.join(maildir, "cur"))
+            os.mkdir(os.path.join(maildir, "tmp"))
+        except:
+            sys.stderr.write("Couldn't create required maildir directories for %s\n" %(section,))
+            sys.exit(1)
+
+    # right - we've got the directories, we've got the section, we know the
+    # url... lets play!
+
+    parse_and_deliver(maildir, section, state_dir)