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#
# git handler for backupninja using gibak as backend
# feedback: rhatto at riseup.net
#
# git handler 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 any later version.
#
# git handler 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, write to the Free Software Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA
#
# Config file options
# -------------------
#
# [general]
# rm_older_than = set to the max history covered by git
# fsck = set to "yes" to run 'git fsck' after commit
# compress = set to "yes" to run 'git gc' after commit
#
# [source]
# repository = the git repository folder
# pull = git repository list to pull changes from
#
# [dest]
# push = remote repositories to push changes after processing other tasks
# send_patches = email recipients to send resulting patches
#
# Features
# --------
#
# - Purge old revisions (to save space or remove sensitive data).
# - Automatically add/remove files into revision control.
# - Compression (gc) and checking (fsck).
# - Pull changes from remote sources.
# - Push branch to remote destinations.
# - Send resulting patches to email recipients.
#
# TODO
# ----
#
# - Issue warnings/errors at each failing stage.
# - Merge operation.
#
function eval_config {
setsection general
getconf rm_older_than
getconf fsck no
getconf compress no
setsection source
getconf repository
getconf pull
setsection dest
getconf push
getconf send_patches
}
function run_gibak {
local cmd="$*"
if [ ! -d "$repository" ]; then
fatal "Folder $repository does not exist."
exit 1
fi
if [ ! -d "$repository/.git" ]; then
$HOME=$repository gibak init
cmd="commit"
fi
if [ -z "$cmd" ]; then
cmd="commit"
fi
$HOME=$repository gibak $cmd
}
# Check configuration
eval_config
# Remove old content
if [ ! -z "$rm_older_than" ]; then
run_gibak rm-older-than $rm_older_than
fi
# Commit changes
run_gibak $repository
# Pull changes from remote sources
if [ ! -z "$pull" ]; then
cwd="`pwd`"
cd $repository
for remote in $pull; do
git pull $remote
done
cd $pwd
fi
# Compress repository
if [ "$compress" == "yes" ]; then
( cd $repository && git gc )
fi
# Run fsck
if [ "$fsck" == "yes" ]; then
( cd $repository && git fsck )
fi
# Push changes to remote repositories
if [ ! -z "$push" ]; then
cwd="`pwd`"
cd $repository
for remote in $push; do
git push $remote master
done
cd $pwd
fi
# Send patches
if [ ! -z "$send_patches" ]; then
cwd="`pwd`"
cd $repository
git format-patch origin
git send-email --to $send_patches
cd $pwd
fi
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