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#!/bin/sh
#
# d2x - convert darcs repos to git, bzr or hg using fast-import
#
# Copyright (c) 2008 by Miklos Vajna <vmiklos@frugalware.org>
#
# 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, see <http://www.gnu.org/licenses/>.
#
usage()
{
echo "Usage: d2x -f format darcsrepo"
}
die()
{
echo "$@"
usage
exit 1
}
check_up_to_date()
{
upstreamnum=$(cd $origin; darcs show repo|grep 'Num Patches'|sed 's/.*: //')
if [ "$upstreamnum" = "$(eval $*)" ]; then
echo "No remote changes to pull!"
exit 0
fi
}
case $1 in
-h|--help)
usage
exit 0
;;
-f)
format="$2"
shift 2
;;
esac
[ -n "$format" ] || die "Target format is not given!"
case $format in
git|bzr|hg)
;;
*)
die "The requested target format is not yet supported!"
;;
esac
origin="$1"
shift 1
[ -d "$origin" ] || die "Source repo does not exist!"
# convert to abspath
cd $origin
origin=$(pwd)
dmark="$origin.$format/darcs/dfe-marks"
fmark="$origin.$format/darcs/ffi-marks"
mkdir -p $origin.$format/darcs
cd $origin.$format
common_opts="--working $origin.$format/darcs/repo --logfile $origin.$format/darcs/log $origin"
if [ ! -f $dmark ]; then
case $format in
git)
git --bare init
darcs-fast-export $* --export-marks=$dmark $common_opts | \
git fast-import --export-marks=$fmark
;;
bzr)
bzr init-repo .
darcs-fast-export $* --export-marks=$dmark $common_opts | \
bzr fast-import --export-marks=$fmark -
;;
hg)
hg init
darcs-fast-export $* $origin | \
hg fastimport -
esac
else
case $format in
git)
check_up_to_date "git rev-list HEAD |wc -l"
darcs-fast-export $* --export-marks=$dmark --import-marks=$dmark $common_opts | \
git fast-import --export-marks=$fmark --import-marks=$fmark
;;
bzr)
check_up_to_date "cd master; bzr revno"
darcs-fast-export $* --export-marks=$dmark --import-marks=$dmark $common_opts | \
bzr fast-import --export-marks=$fmark --import-marks=$fmark -
;;
hg)
die "Incremental conversion to hg is not yet supported by hg fastimport."
;;
esac
fi
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