#!/bin/bash

# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2016 Stephan Raue (stephan@openelec.tv)
# Copyright (C) 2018-present Team LibreELEC (https://libreelec.tv)

. config/options "${1}"

if [ -z "${2}" ]; then
  die "usage: ${0} package_name target_dir"
fi

[ -z "${PKG_URL}" -o -z "${PKG_SOURCE_NAME}" ] && die "${PKG_NAME}: PKG_URL or PKG_SOURCE_NAME undefined"
[ ! -d "${SOURCES}/${1}" ] && die "${PKG_NAME}: ${SOURCES}/${1} not found"
[ ! -d "${2}" ] && die "${PKG_NAME}: target ${2} not found"

if [[ "${PKG_URL}" =~ ^file:// ]]; then
  FULL_SOURCE_PATH="${PKG_SOURCE_NAME}"
else
  FULL_SOURCE_PATH="${SOURCES}/${1}/${PKG_SOURCE_NAME}"
fi

if [ ! -f "${FULL_SOURCE_PATH}" -a ! -d "${FULL_SOURCE_PATH}" ]; then
  echo "error: File ${PKG_SOURCE_NAME} doesn't exist for package ${1}"
  echo "Have you called scripts/extract before scripts/get?"
  die
fi

# The build system expects packages to be extracted to
# ${PKG_BUILD}.
# Try to strip the top level dir from the archive and extract to
# the correct directory if possible so packages don't need to
# set PKG_SOURCE_DIR and scripts/unpack doesn't need to rename
# the directory.
# Currently this is only supported for tar archives.
# If PKG_SOURCE_DIR is set don't apply any directory mangling
# so advanced renaming (eg stripping more than one directory level)
# can be performed by scripts/unpack.
# If the archive does not contain a top level folder the strip components
# can be disabled by PKG_TAR_STRIP_COMPONENTS="no" in package.mk
TAR_OPTS=""
if [ -z "${PKG_SOURCE_DIR}" ]; then
  [ -z "${PKG_TAR_STRIP_COMPONENTS}" ] && TAR_OPTS="--strip-components=1" || :
  DESTDIR="${2}/${PKG_NAME}-${PKG_VERSION}"
else
  DESTDIR="${2}"
fi

case "${PKG_SOURCE_NAME}" in
  *.tar | *.tar.bz2 | *.tbz | *.tar.gz | *.tgz | *.tar.xz | *.txz)
    mkdir -p "${DESTDIR}"
    tar xf "${FULL_SOURCE_PATH}" ${TAR_OPTS} -C "${DESTDIR}"
    ;;
  *.tar.zst | *.tzst)
    mkdir -p "${DESTDIR}"
    zstdcat "${FULL_SOURCE_PATH}" | tar xf - ${TAR_OPTS} -C "${DESTDIR}"
    ;;
  *.7z)
    mkdir -p "${2}/${1}"
    7z x -o"${2}/${1}" "${FULL_SOURCE_PATH}"
    ;;
  *.zip)
    unzip -o -q "${FULL_SOURCE_PATH}" -d "${2}"
    ;;
  *.diff | *.patch)
    patch -d "${2}" -p1 < "${FULL_SOURCE_PATH}"
    ;;
  *.diff.bz2 | *.patch.bz2 | patch-*.bz2)
    bzcat "${FULL_SOURCE_PATH}" | patch -d "${2}" -p1
    ;;
  *.diff.gz | *.patch.gz | patch-*.gz)
    zcat "${FULL_SOURCE_PATH}" | patch -d "${2}" -p1
    ;;
  *)
    FULL_DEST_PATH="${2}/${PKG_NAME}-${PKG_VERSION}"
    mkdir "${FULL_DEST_PATH}"
    tar cf - -C "${FULL_SOURCE_PATH}" ${PKG_TAR_COPY_OPTS} . | tar xf - -C "${FULL_DEST_PATH}"
    ;;
esac