#!/usr/bin/python
#    Copyright 2012 Jeff Epler <jepler@unpythonic.net>
#
#    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
import rfc822, sys, struct, fcntl, termios, re
m = rfc822.Message(sys.stdin)

def screen_width():
    try:
        f = open("/dev/tty", "w")
        n = f.fileno()
        h, w = struct.unpack("hh", fcntl.ioctl(f.fileno(),
            termios.TIOCGWINSZ, '\0\0\0\0'))
        return w
    except (IOError,):
        return 80
 
width = screen_width()

if m.unixfrom: sys.stdout.write(m.unixfrom)

def headers(m):
    l = []
    for line in m.headers:
        if not line[:1].isspace():
            if l: yield what, "".join(l).strip()
            a, b = line.split(":", 1)
            what = a
            l = [b]
        else:
            l.append(line)
    if l: yield what, "".join(l).strip()

for h, s in headers(m):
    if h.lower() in ('to', 'cc'):
        v = m.getaddrlist(h)
        s = re.sub("\n[ \t]+", " ", s)
        if len(s) > (width-4) and len(v) > 2:
            a = ", ".join(vi[0] or vi[1] for vi in v)
            s = "[%d recipients] %s" % (len(v), a)
            s = s[:width-7] + "..."
    lines = "%s: %s" % (h, s)
    for line in lines.split("\n"):
# uncomment next line to truncate all header lines to 80 chars
        line = "%-.*s" % (width, line)
        print line

print
for line in sys.stdin: sys.stdout.write(line)