#!/bin/bash
######################################################################
# okiniri-export
#
# Given a patchset, get the log, diffstat and diff
#
# (C) 2005 Horms <horms@verge.net.au> 
#          a.k.a Simon Horman <simon@valinux.co.jp>
#
# 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
######################################################################

set -e

if [ $# -ne 1 ]; then
	echo "Usage: okiniri-export <commit-sha1>|HEAD" >&2
	exit 1
fi

COMMIT="$(git-rev-parse --revs-only --no-flags --default $1)"

#LC_ALL=C date -d "@1141975489" "+%c %z"

echo "commit $COMMIT"
git cat-file commit "$COMMIT" | while IFS=\> read a b; do
	if [ -n "$b" ]; then
		echo -n "$a> "
		SEC=${b#* }
		SEC=${SEC% *}
		ZONE=${b##* }
		SIGN=${ZONE%%[0-9]*}
		OFFSET=${ZONE#$SIGN}
		HOURS=${OFFSET%??}
		MINUTES=${OFFSET#??}
		if [ "$SIGN" = "+" ]; then
			SIGN="-"
		else
			SIGN="+"
		fi
		TZ="UTC ${SIGN}$HOURS:$MINUTES" LC_ALL=C \
			date -d "@$SEC" "+%c %z"
	else
		echo "$a"
	fi
done
echo
git diff-tree -p "$COMMIT" | diffstat -p1
echo
git diff-tree -p "$COMMIT"