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#! /bin/sh 
# Copyright (C) 2009 Sergey Poznyakoff
#
# 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, 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/>.

SVNROOT=file:///svnroot
GITROOT=/gitroot
HEADPFX=

set -e

if [ -r /etc/mirror/git/config ]; then
  . /etc/mirror/git/config
fi

if [ -r $HOME/.git-mirror ]; then
  . $HOME/.git-mirror
fi  

usage() {
  cat <<-EOT
	usage: $0 GIT-REPO
EOT
}       

while [ $# -ne 0 ]
do
  case $1 in
  -h|--help)
    usage
    exit 0;;
  -*)
    echo >&2 "$0: unknown option $1"
    exit 1;;
  *)
    break;;
  esac
done

if [ $# -ne 1 ]; then
  echo >&2 "$0: required argument missing"
  exit 1
fi

cd $GITROOT/$1

git branch -r |
 while read tag
 do
   case $tag in
   tags/*|trunk) 
      git branch -r -d $tag;;
   *)
      if [ -n "$HEADPFX" ]; then
        git checkout -b $tag $tag
        git branch -r -d $tag
        git branch -d ${HEADPFX}$tag
      else
        git branch -r -d $tag
      fi;;
   esac
 done

git config --remove-section svn
git config --remove-section svn-remote.svn

if [ -x .git/hooks/pre-receive ]; then
  chmod -x .git/hooks/pre-receive
  echo "Keeping old pre-receive hook in $GITROOT/$1/.git/hooks/pre-receive.mirror"
  mv .git/hooks/pre-receive .git/hooks/pre-receive.mirror
fi

if test -n "$SVNREADME" -a -r "$SVNREADME"; then
  readme=$(basename "$SVNREADME")
  cd /tmp
  CONAME=$1.$$
  svn co -q $SVNROOT/$1/trunk $CONAME
  cd $CONAME
  if test "$SVNREMOVE" = "yes"; then
    echo "Removing SVN trunk"
    svn remove --force --non-interactive *
  fi     
  echo "Installing the $readme file"
  if test -x "$SVNREADME"; then
    $SVNREADME $1 > "$readme"
  else
    cp "$SVNREADME" "$readme"
  fi
  svn add "$readme"
  svn commit --non-interactive -m "Add $readme (by $0)"
  cd /tmp
  rm -rf "$CONAME"
fi
  
if test -n "$SVNHOOK" -a -r "$SVNHOOK"; then
  echo "Installing SVN pre-commit hook"
  dir=${SVNROOT##file://}/$1/hooks
  cp $SVNHOOK $dir/pre-commit
  chmod +x $dir/pre-commit
fi

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