#!/bin/bash -e
# Helper script for various git mirrors of other VCS types.
# I'm lazy and can't be bothered to remember the exact invocation.

#if [[ $(git branch | awk '($1 == "*") {print $2}') != master ]] ; then
#	echo "Switch to master first"
#	exit 1
#fi

g() {
	set -- git "$@"
	echo "--- $*"
	"$@"
}

if git config svn-remote.svn.url >/dev/null ; then
	# git-config uses svn.authorsfile relative to repo root
	# i.e. good to use .git/authors
	set -- git svn fetch --all "$@"
	expected=""
elif git config remote.hg.url >/dev/null ; then
	set -- git-hg pull
	$(git config --get --bool remote.hg.force)  && set -- "$@" --force
	$(git config --get --bool remote.hg.rebase) && set -- "$@" --rebase
elif git config cvs.cvsroot >/dev/null ; then
	# authors file is at .git/cvs-authors
	set -- git cvsimport -a -d $(git config cvs.cvsroot) $(git config cvs.module) "$@"
	expected="Already up-to-date."
elif [[ -d CVS ]] && git rev-parse origin >/dev/null ; then
	set -- git cvsimport -a
	expected="Already up-to-date."
else
	set -- git pull "$@"
	expected="Already up-to-date."
fi

output=$(
	"$@" | tee /proc/$$/fd/1
	_pipestatus=${PIPESTATUS[*]}
	[[ ${_pipestatus// /} -eq 0 ]] || exit 1
)
[[ ${output} == "${expected}" ]] && exit 0

g fsck
g count-objects
g gc --prune