Mirror GIT repositories into existing Fossil SCM repositories

git-fossil-mirror.sh

#!/bin/sh
#
# Providing and maintaining a mirror of a GIT repository on a in a local
# Fossil SCM based repository system by means of this rather simple shell script
# wrapper around the Fossil base functionality
#
#
# Copyright 2016-2026 Martin Goellnitz
#
# 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 3 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 Lesser 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/>.
#
BASE=$(pwd)
DIR=$BASE
REPO=$(git remote get-url origin 2> /dev/null|head -1)
if [ "$1" = "-s" ] ; then
  SIMULATE=true
  shift
fi
if [ -z "$REPO" ] ; then
  if  [ -z "$1" ] ; then
    echo "Must be in cloned git repository directory"
    echo "or better give the repository database filename as the first parameter to $(basename "$0")"
    exit 1
  fi
  if [ ! -z "$(echo $1|grep :)" ] ; then
    # checkout repo and go there
    rm -rf git-mirror
    git clone "$1" git-mirror 2> /dev/null
    DIR=git-mirror
    REPO=$(cd $DIR;git remote get-url origin 2> /dev/null|head -1)
    shift
  else
    echo "No git repository source to clone given as the first parameter to $(basename "$0")"
    exit 1
  fi
fi
BRANCH=$(cd $DIR;git branch --show-current)
REPO="$BASE/$(basename $REPO .git).fossil"
if [ ! -z "$1" ] ; then
  REPO="$(dirname $1)/$(basename $1 .fossil).fossil"
fi
if [ -z "$SIMULATE" ] ; then
  PARAM=-i
  if [ ! -f "$REPO" ] ; then
    fsl init "$REPO" > /dev/null
    PARAM=-f
  fi
  (cd $DIR ; git fast-export --all) | fossil import --git --rename-trunk trunk "$PARAM" "$REPO" > /dev/null
fi
rm -rf git-mirror