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#!/bin/bash
#
# Creates a release tarball directly from git
# Note that the tarball contents might not exactly match
# a particular git commit, particularly for untagged
# commits.
#
# An alternative approach would be to generate source tarballs
# using CPack. That would remove our dependency on git, but if
# Autotools is any indication it would require continuous
# maintenance.
#
# Copyright 2011 Balint Reczey <balint@balintreczey.hu>
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 1998 Gerald Combs
#
# SPDX-License-Identifier: GPL-2.0-or-later
set -e -u -o pipefail
DESTDIR=.
while getopts "d:" OPTCHAR ; do
case $OPTCHAR in
d) DESTDIR=$OPTARG ;;
*) printf "Unknown option %s\n" "$OPTCHAR" ;;
esac
done
shift $(( OPTIND - 1 ))
# The remaining parameter, if set, is a package version such as 3.4.5
# or 3.4.5-67-gabcd4321
# By default the version from make-version.py + CMake is used.
PROJECT_VERSION=@PROJECT_VERSION@
if test -n "${1-}"; then
PROJECT_VERSION="$1"
fi
TARBALL="${DESTDIR}/wireshark-${PROJECT_VERSION}.tar.xz"
# A tarball produced by 'git archive' will have the $Format string
# substituted due to the use of 'export-subst' in .gitattributes.
# shellcheck disable=SC2016
COMMIT='1fe5bce8d665c0d64e1af63545421c67596db165'
if [[ $COMMIT != \$F* ]] ; then
# This file was extracted from a tarball produced by git archive
# and so we are not in a git repository.
if [[ -f "$TARBALL" ]] ; then
# git get-tar-commit-id works outside a git repo, as it
# only reads the first 1024 bytes of the tar extended header.
if [[ $(git get-tar-commit-id < <(xzcat "$TARBALL")) == "$COMMIT" ]] ; then
echo "$TARBALL commit ID matches $COMMIT."
else
# Allow people to make changes to a downloaded source tarball
# and re-tar it?
echo "WARNING: $TARBALL is not the original git archive."
fi
exit 0
fi
echo ""
echo "The build system cannot produce a source tarball outside of a git repository."
echo "If you are trying to build an RPM package from source extracted from a tarball,"
echo "copy it (i.e., wireshark-${PROJECT_VERSION}.tar.xz) to"
echo "$DESTDIR"
echo "and run the build command again."
exit 1
fi
STASH_ID=$(git stash create || echo "")
if [[ -n "$STASH_ID" ]] ; then
echo "Setting commit from stash $STASH_ID"
COMMIT="$STASH_ID"
else
echo "Setting commit from HEAD"
COMMIT="HEAD"
fi
if [ -f "$TARBALL" ] ; then
printf "Found %s\\n" "$TARBALL"
if TARBALL_ID=$(git get-tar-commit-id < <(xzcat "$TARBALL")) && COMMIT_ID=$(git rev-parse --verify "$COMMIT") ; then
if [[ $TARBALL_ID == "$COMMIT_ID" ]] ; then
echo "$TARBALL commit ID matches $COMMIT."
exit 0
fi
fi
fi
echo "Creating $TARBALL from $COMMIT"
XZ_OPTS=
echo . | xz --threads=0 > /dev/null 2>&1 && XZ_OPTS=--threads=0
git archive --prefix="wireshark-${PROJECT_VERSION}/" "$COMMIT" | xz $XZ_OPTS > "$TARBALL"
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