#!/bin/bash
# Copyright 2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

PORTAGE_BIN_PATH=${PORTAGE_BIN_PATH:-/usr/lib/portage/bin}
PORTAGE_PYM_PATH=${PORTAGE_PYM_PATH:-/usr/lib/portage/pym}
INSTALL_XATTR=${EPREFIX}/usr/bin/install-xattr
# Use safe cwd, avoiding unsafe import for bug #469338.
export __PORTAGE_HELPER_CWD=${PWD}
cd "${PORTAGE_PYM_PATH}"
export __PORTAGE_HELPER_PATH=${BASH_SOURCE[0]}

if [[ ${PORTAGE_INSTALL_XATTR_IMPLEMENTATION} == "c" ]]; then
	implementation="c"
elif [[ ${PORTAGE_INSTALL_XATTR_IMPLEMENTATION} == "python" ]]; then
	implementation="python"
else
	# If PORTAGE_INSTALL_XATTR_IMPLEMENTATION is unset or not set to "c" or "python"
	# then we'll autodetect, preferring "c" but falling back on "python"
	if [[ -x "${INSTALL_XATTR}" ]]; then
		implementation="c"
	else
		implementation="python"
	fi
fi

if [[ "${implementation}" == "c" ]]; then
	exec "${INSTALL_XATTR}" "$@"
elif [[ "${implementation}" == "python" ]]; then
	PYTHONPATH=${PORTAGE_PYTHONPATH:-${PORTAGE_PYM_PATH}} \
		exec "${PORTAGE_PYTHON:-/usr/bin/python}" "${PORTAGE_BIN_PATH}/install.py" "$@"
else
	echo "Unknown implementation for PORTAGE_INSTALL_XATTR_IMPLEMENTATION"
	exit -1
fi