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|
#!/bin/sh
#
# x2d - convert git, bzr or hg repos to darcs using fast-export
#
# 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: x2d -f format repo"
}
die()
{
echo "$@"
usage
exit 1
}
check_up_to_date()
{
upstreamnum=$(darcs show repo|grep 'Num Patches'|sed 's/.*: //')
if [ "$upstreamnum" = "$(cd $origin; 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 "Source format is not given!"
case $format in
git|bzr|hg)
;;
*)
die "The requested source format is not yet supported!"
;;
esac
common_opts=""
while [ -n "$2" ]
do
common_opts="$common_opts $1"
shift 1
done
origin="$1"
shift 1
[ -d "$origin" ] || die "Source repo does not exist!"
# convert to abspath
cd $origin
origin=$(pwd)
dmark="$origin.darcs/_darcs/fast-import/dfe-marks"
fmark="$origin.darcs/_darcs/fast-import/ffi-marks"
mkdir -p $origin.darcs
cd $origin.darcs
common_opts="$common_opts --logfile $origin.darcs/_darcs/fast-import/log"
pypath="/$(python -c 'from distutils import sysconfig; print sysconfig.get_python_lib()[1:]')/"
if [ ! -f $dmark ]; then
darcs init
mkdir -p _darcs/fast-import
case $format in
git)
(cd $origin; git fast-export --export-marks=$fmark HEAD) | \
darcs-fast-import --export-marks=$dmark $common_opts
;;
bzr)
(cd $origin; bzr fast-export \
--export-marks=$fmark . ) | darcs-fast-import --export-marks=$dmark $common_opts
;;
hg)
(cd $origin; $pypath/bzrlib/plugins/fastimport/exporters/hg-fast-export.py -r . ) | \
darcs-fast-import --export-marks=$dmark $common_opts
esac
else
case $format in
git)
check_up_to_date "git rev-list HEAD |wc -l"
(cd $origin; git fast-export --export-marks=$fmark --import-marks=$fmark HEAD) | \
darcs-fast-import --export-marks=$dmark --import-marks=$dmark $common_opts
;;
bzr)
# bzr revno is not good here, because at merges
# it produces less revision than the number we
# have in darcs
check_up_to_date "bzr log --include-merges |grep -c revno:"
(cd $origin; bzr fast-export \
--export-marks=$fmark --import-marks=$fmark . ) | \
darcs-fast-import --export-marks=$dmark --import-marks=$dmark $common_opts
;;
hg)
check_up_to_date 'echo $(($(hg tip --template "{rev}")+1))'
(cd $origin; $pypath/bzrlib/plugins/fastimport/exporters/hg-fast-export.py -r . ) | \
darcs-fast-import --export-marks=$dmark --import-marks=$dmark $common_opts
;;
esac
fi
|
