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# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/savedconfig.eclass,v 1.2 2007/02/04 20:23:28 dragonheart Exp $
# Original Author: Daniel Black <dragonheart@gentoo.org>
#
# Purpose: Define an interface for ebuilds to save and restore
# complex configuration that may be edited by users.
#
# TODO
#
# - Move away from cp --parents because BSD doesn't like it
IUSE="savedconfig"
# save_config
#
# Saves the files and/or directories to
# /etc/portage/savedconfig/${CATEGORY}/${PF}
# If a single file is specified ${PF} is that file else it is a directory
# containing all specified files and directories.
#
save_config() {
case ${EBUILD_PHASE} in
preinst|install)
;;
*) die "Bad package! save_config only for use in pkg_preinst or src_install functions!"
;;
esac
case $# in
0) die "Tell me what to save"
;;
1) if [[ -f "$1" ]]; then
dodir "${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}
cp "$1" "${D}/${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}/${PF} \
|| die "Failed to save $1"
else
dodir "${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}/${PF}
cp --parents -pPR "$1" "${D}/${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}/${PF} \
|| die "Failed to save $1"
fi
;;
*)
dodir "${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}/${PF}
while [ "$1" ]; do
cp --parents -pPR "$1" "${D}/${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}/${PF} \
|| die "Failed to save $1"
shift
done
esac
}
# restore_config
#
# Restores the configuation saved ebuild previously potentially with user edits
#
# Requires the name of the file to restore to if a single file was given to
# save_config. Otherwise it restores the directory structure.
#
# Looks for config files in the following order.
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CTARGET}/${CATEGORY}/${PF}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CHOST}/${CATEGORY}/${PF}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CATEGORY}/${PF}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CTARGET}/${CATEGORY}/${P}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CHOST}/${CATEGORY}/${P}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CATEGORY}/${P}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CTARGET}/${CATEGORY}/${PN}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CHOST}/${CATEGORY}/${PN}
# ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CATEGORY}/${PN}
#
#
restore_config() {
use savedconfig || return
case ${EBUILD_PHASE} in
unpack|compile)
;;
*) die "Bad package! save_config only for use in pkg_preinst or src_install functions!"
;;
esac
local found;
local base=${PORTAGE_CONFIGROOT}/etc/portage/savedconfig
for check in {${CATEGORY}/${PF},${CATEGORY}/${P},${CATEGORY}/${PN}}; do
configfile=${base}/${CTARGET}/${check}
[[ -r ${configfile} ]] || configfile=${base}/${CHOST}/${check}
[[ -r ${configfile} ]] || configfile=${base}/${check}
einfo "Checking existence of ${configfile} ..."
if [[ -r "${configfile}" ]]; then
einfo "found ${configfile}"
found=${configfile};
break;
fi
done
if [[ -f ${found} ]]; then
if [ $# -gt 0 ]; then
cp -pPR "${found}" "$1" || die "Failed to restore ${found} to $1"
else
die "need to know the restoration filename"
fi
elif [[ -d ${found} ]]; then
dest=${PWD}
pushd "${found}"
cp --parents . "${DEST}" \
|| die "Failed to restore ${found} to $1"
popd
elif [[ -a {found} ]]; then
die "do not know how to handle non-file/directory ${found}"
else
eerror "No saved config to restore - please remove USE=saveconfig or"
die "provide a configuration file in ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CATEGORY}/${PN}"
fi
}
#warn_config() {
#
#}
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