#!/bin/sh

# Gitolite permission manipulation helper script
# Copyright 2011, Michal Sojka <wsh@2x.cz>
# License: GNU GPLv2+

curr_branch=$(git symbolic-ref -q HEAD)
curr_branch_short="${curr_branch#refs/heads/}"
remote=$(git config --get branch.$curr_branch_short.remote)
url=$(git config --get remote.$remote.url) || url=$remote

url_sans_ssh=${url#ssh://}
if test x$url_sans_ssh != x$url; then
    userhost=${url_sans_ssh%%/*}
    repo=${url_sans_ssh#*/}
else
    # scp-like syntax
    userhost=${url%%:*}
    repo=${url#*:}
fi

bn=$(basename $0)
if test x$bn = xgl-perm; then
    cmd=$1; shift
else
    cmd=$bn
fi

case $cmd in
    gl-getperms|get)
	if test $# -gt 0; then echo >&2 "Command $cmd does not accept any arguments"; exit 1; fi
	ssh $userhost getperms $repo;;
    gl-setperms|set)
	if test $# -gt 0; then echo >&2 "Command $cmd does not accept any arguments - it reads from stdin"; exit 1; fi
	ssh $userhost setperms $repo;;
    gl-addperm|add)
	perms=$(ssh $userhost getperms $repo)
	( test "$perms" && echo "$perms"; echo $* ) | ssh $userhost setperms $repo;;
    gl-rmperm|rm)
	user=$1
	perms=$(ssh $userhost getperms $repo) # setperms does not work when executed in the same pipe with getperms
	echo "$perms" | sed -e "s/[[:space:]]*\\b$user\\b//g" -e "/^[[:alnum:]]\+[[:space:]]*$/d" | ssh $userhost setperms $repo;;
esac