#!/bin/sh
# example description file:
# To: nyh@il.ibm.com
# To: nyh@math.technion.ac.il
# Cc: nyh@il.ibm.com
# from "Nadav Har'El" <nyh@il.ibm.com>
# name Nested VMX, v5
# 
# long multiline description


case $# in
0) echo "Usage: $0 description patchfiles..."; exit 1;;
esac

headers=

while read line
do
	case $line in
	"") rest="`cat`"; break;;
	To:*|Cc:*|Bcc:*) headers="$line
$headers";;
	from\ *) from=`expr "$line" : "from \(.*\)"`;;
	name\ *) name=`expr "$line" : "name \(.*\)"`;;
	esac
done <$1

shift

email=`expr "$from" : ".*<\(.*\)>"`
messageid="<`date +%s`-$email>"

# heading message
echo "sending heading message"
# Sleep a bit to give the user a chance to change his mind...
sleep 30
(echo -n "$headers"
echo "From: $from"
echo "Message-ID: $messageid"
echo "Subject: [PATCH 0/$#] $name"
echo "$rest") |
awk '/^DIFFSTAT$/ {system("diffstat -p1 -w70 '"$*"'"); next} {print}' |
sendmail -t -f "$from"

# following messages
for i
do
	# Sleep a bit to give the mail server some chance to send out the mails
	# in intended order.
	sleep 30
	echo "sending $i"
	(echo -n "$headers"
	echo "From: $from"
	echo "References: $messageid"
	cat $i) | sendmail -t -f "$from"
done