#!/bin/sh -e
# Copyright 2005, Ryan Anderson <ryan@michonline.com>
#
# This file is licensed under the GPL v2, or a later version
# at the discretion of Linus Torvalds.

usage()
{
	echo "$0 <commit> <filename> <url>"
	echo "  Summarizes the changes since <commit>, stores them in <filename>"
	echo "  and includes <url> in the message generated."
	exit 1
}


revision=$1
filename=$2
url=$3

[ "$revision" ] || usage
[ "$filename" ] || usage
[ "$url" ] || usage

baserev=`git-rev-parse $revision`

(
	echo "The git repository at:" 
	echo "    $url"
	echo "contains the following changes since commit $baserev"
	echo ""
	git log $revision.. | git-shortlog ;
	git diff $revision.. | diffstat ;
) | tee $filename

echo "The above message is also stored in $filename"