Makes mutt view calender invites nicely

bin/.bin/emails/dump-ical

@@ -0,0 +1,75 @@
+#!/usr/bin/env python
+
+import sys
+import warnings
+import vobject
+import datetime
+
+
+def get_invitation_from_path(path):
+    with open(path) as f:
+        try:
+            # vobject uses deprecated Exceptions
+            with warnings.catch_warnings():
+                warnings.simplefilter("ignore")
+                return vobject.readOne(f, ignoreUnreadable=True)
+        except AttributeError:
+            return vobject.readOne(f, ignoreUnreadable=True)
+
+
+def person_string(c):
+    return "{} {}".format(c.params['CN'][0], "<%s>" % c.value.split(':')[1])
+
+
+def when_str_of_start_end(s, e):
+    datetime_format = "%a, %d %b %Y at %H:%M"
+
+    # sometimes, s and e can be dates only, so convert them to datetimes
+    if type(s) == datetime.date:
+        s = datetime.datetime.combine(s, datetime.time.min)
+    if type(e) == datetime.date:
+        e = datetime.datetime.combine(e, datetime.time.min)
+
+    until_format = "%H:%M %Z" if s.date() == e.date() else datetime_format
+    return "{} -- {}".format(s.strftime(datetime_format), e.strftime(until_format))
+
+
+def pretty_print_invitation(invitation):
+    event = invitation.vevent.contents
+    title = event['summary'][0].value
+    org = event['organizer'][0] if 'organizer' in event else None
+    invitees = event['attendee'] if 'attendee' in event else None
+    start = event['dtstart'][0].value
+    end = event['dtend'][0].value
+    location = event['location'][0].value if 'location' in event else None
+    description = event['description'][0].value if 'description' in event else None
+    sequence = event['sequence'][0].value if 'sequence' in event else None
+    rrule = event['rrule'][0].value if 'rrule' in event else None
+    print("="*70)
+    if sequence is not None and int(sequence) > 0:
+        print("MEETING UPDATE".center(70))
+    else:
+        print("MEETING INVITATION".center(70))
+    print("="*70)
+    print("Event:\n\t{}".format(title))
+    if org:
+        print("Organiser:\n\t{}".format(person_string(org)))
+    if invitees:
+        print("Invitees:")
+        for i in invitees:
+            print("\t{}".format(person_string(i)))
+    print("When:\n\t{}".format(when_str_of_start_end(start, end)))
+    if rrule:
+        print("Rrule:\n\t{}".format(rrule))
+    if location:
+        print("Location:\n\t{}".format(location))
+    if description:
+        print("---\n{}\n---".format(description))
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2 or sys.argv[1].startswith('-'):
+        sys.stderr.write("Usage: %s <filename.ics>\n".format(sys.argv[0]))
+        sys.exit(2)
+    inv = get_invitation_from_path(sys.argv[1])
+    pretty_print_invitation(inv)

mutt/.config/mutt/mailcap

@@ -1,5 +1,6 @@
 text/html; $BROWSER %s
 text/html; w3m -I %{charset} -T text/html -dump; copiousoutput;
+text/calendar; dump-ical %s; copiousoutput;
 image/*; sxiv -a -b %s &
 video/*; setsid mpv --quiet %s &
 application/pdf; zathura %s &

mutt/.config/mutt/muttrc

@@ -137,12 +137,13 @@ set mailcap_path = "~/.config/mutt/mailcap" # https://neomutt.org/guide/mimesupp
 # Tells Mutt to automatically view files with these mime types
 auto_view text/html # https://neomutt.org/guide/reference#auto_view
 auto_view application/pgp-encrypted # https://neomutt.org/guide/reference#auto_view
+auto_view text/calendar # https://neomutt.org/guide/reference#auto_view
 # Order to try and show multipart emails
-alternative_order text/plain text/enriched text/html
+alternative_order text/plain text/calendar text/enriched text/html
 # Macro to toggle alternates (plain <-> html), based on:
 # https://groups.google.com/d/msg/comp.mail.mutt/9I702oMwQQE/JqdLnp3j9WAJ
-macro pager ,@aoh= "<enter-command>unalternative_order *; alternative_order text/html text/plain text/enriched; macro pager A ,@aot= 'toggle alternative order'<enter><exit><display-message>"
-macro pager ,@aot= "<enter-command>unalternative_order *; alternative_order text/plain text/enriched text/html; macro pager A ,@aoh= 'toggle alternative order'<enter><exit><display-message>"
+macro pager ,@aoh= "<enter-command>unalternative_order *; alternative_order text/calendar text/html text/plain text/enriched; macro pager A ,@aot= 'toggle alternative order'<enter><exit><display-message>"
+macro pager ,@aot= "<enter-command>unalternative_order *; alternative_order text/plain text/calendar text/enriched text/html; macro pager A ,@aoh= 'toggle alternative order'<enter><exit><display-message>"
 macro pager A ,@aoh= "toggle alternative order"
 # Use urlscan to handle links in messages
 macro pager U "<enter-command>set pipe_decode = yes<enter><pipe-message>urlscan  -dc -r 'linkhandler {}'<enter><enter-command>set pipe_decode = no<enter>" "view URLs"