send pgp mail from vim

sendpgp.py

#!/usr/local/bin/python
"""
Reads message from stdin, pgp encrypts, launch mailto: url to send with mail app.

I use this to send pgp messages from within vim.

First i type a message like this:
----
Subject: test
To: person@example.com

hi there
----


Then with "!G sendpgp" i pipe the mail through sendpgp,
which will encrypt the mail and open it in my mail app using
a mailto: url.


Willem Hengeveld <itsme@xs4all.nl>
"""

# http://tools.ietf.org/html/rfc5322
# http://tools.ietf.org/html/rfc6068

import sys
import pipes
import urllib
import subprocess
import StringIO
import webbrowser

def pgpencrypt(body, dst):
    p= subprocess.Popen(["gpg2", "-e", "-a"]+map(lambda x: "-r %s" % x, dst), stdin=subprocess.PIPE, stdout=subprocess.PIPE)
    out, err= p.communicate(body)
    return out

to= ""
if len(sys.argv)>1:
    to= sys.argv[1]

msg=dict()
while True:
    hdrline= sys.stdin.readline()
    if len(hdrline)<=1:
        break
    key, value= map(lambda x: x.strip(), hdrline.split(':', 1))
    key= key.capitalize()
    if key in msg:
        msg[key] += ", "+value
    else:
        msg[key]= value

body= sys.stdin.read()

dst= []
if to:
   for addr in map(lambda x:x.strip(), to.split(',')):
       if addr:
           dst.append(addr)
if msg['To']:
   for addr in map(lambda x:x.strip(), msg['To'].split(',')):
       if addr:
           dst.append(addr)

pgpbody= pgpencrypt(body, dst)
msg['body']= pgpbody

mailto= "mailto:%s?%s" % (urllib.quote(to), "&".join(map( lambda x:"%s=%s" %(urllib.quote(x[0]),urllib.quote(x[1])), msg.items()  )))

webbrowser.open(mailto)