jgit/tools/rewrite-history.sh

#!/bin/sh
# Copyright (C) 2010, Matthias Sohn <matthias.sohn@sap.com>
# and other copyright owners as documented in the project's IP log.
#
# This program and the accompanying materials are made available
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# accompanies this distribution, is reproduced below, and is
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TOOLS_DIR=$(dirname $0)
TOOLS_DIR=$(cd $TOOLS_DIR && pwd)
export TOOLS_DIR

MAP_OF_COMMITS=$(pwd)/commit.map
export MAP_OF_COMMITS

: >$MAP_OF_COMMITS
git filter-branch \
--tree-filter '
	export GIT_COMMIT
	$TOOLS_DIR/fix-headers.pl

	if [ -f tools/graft-old-history.sh ]; then
		i=$(map 046198cf5f21e5a63e8ec0ecde2ef3fe21db2eae)
		perl -pi -e "
			s/^POST=.*/POST=$i/;
		" tools/graft-old-history.sh
	fi
' \
--env-filter '
	if [ 046198cf5f21e5a63e8ec0ecde2ef3fe21db2eae = $GIT_COMMIT ]; then
		export GIT_AUTHOR_NAME="Git Development Community"
		export GIT_AUTHOR_EMAIL=git@vger.kernel.org
	fi
' \
--parent-filter '
	if [ 046198cf5f21e5a63e8ec0ecde2ef3fe21db2eae = $GIT_COMMIT ]; then
		cat >/dev/null
	else
		cat
	fi
' \
--commit-filter '
	n=$(git commit-tree "$@")
	echo $GIT_COMMIT=$n >>$MAP_OF_COMMITS
	echo $n
' \
-d /tmp/jgit-rewrite-history-$$ \
$(git for-each-ref --format='%(refname)' refs/heads refs/changes) \
--not 3a2dd9921c8a08740a9e02c421469e5b1a9e47cb