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openvpn/dev-tools/lz4-rebaser.sh
David Sommerseth 499794596d Update copyright to include 2018 plus company name change
The autumn of 2017, OpenVPN Technologies, Inc changed name to just
OpenVPN Inc.  Otherwise, extend the copyright to cover 2018 as well.

With the exception of the company name change, all changes have been
performed by the dev-tools/update-copyright.sh script.

Signed-off-by: David Sommerseth <davids@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20180131140314.11103-1-davids@openvpn.net>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg16418.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
2018-02-01 08:29:21 +01:00

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#!/bin/sh
# lz4-rebaser.sh - Does the LZ4 rebase process in an automated fashion
#
# Copyright (C) 2017-2018 David Sommerseth <davids@openvpn.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.
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# Basic shell sanity
set -eu
# Simple argument control
if [ $# -ne 1 ]; then
echo "Usage: $0 <Path to upstream LZ4 source tree>"
exit 1
fi
# Check that we have the files we need before starting the rebase
LZ4_C="$1/lib/lz4.c"
LZ4_H="$1/lib/lz4.h"
if [ ! -r "$LZ4_C" -o ! -r "$LZ4_H" ]; then
echo "Could not locate $LZ4_H and/or $LZ4_C"
exit 1
fi
# Extract the upstream LZ4 commit base
lz4_tag="$(git --git-dir $1/.git tag --contains HEAD)"
lz4_commit="$(git --git-dir $1/.git rev-parse --short=20 HEAD)"
# Do the rebase
srcroot="$(git rev-parse --show-toplevel)"
echo "* Copying upstream lz4.h to compat-lz4.h"
cp "$LZ4_H" "${srcroot}/src/compat/compat-lz4.h"
echo "* Porting upstream lz4.c to compat-lz4.c"
{
cat <<EOF
/* This file has been backported by $0
* from upstream lz4 commit $lz4_commit ($lz4_tag)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#elif defined(_MSC_VER)
#include "config-msvc.h"
#endif
#ifdef NEED_COMPAT_LZ4
EOF
sed 's/\"lz4\.h\"/\"compat-lz4.h"/' "$LZ4_C"
cat <<EOF
#endif /* NEED_COMPAT_LZ4 */
EOF
} > "${srcroot}/src/compat/compat-lz4.c"
echo "* Running 'git add'"
git add src/compat/compat-lz4.[ch]