# 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 1.5 2007/04/23 19:35:05 swegener 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. # # Thanks to Mike Frysinger <vapier@gentoo.org> for the suggestions. inherit portability 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() { if [[ ${EBUILD_PHASE} != "install" ]]; then die "Bad package! save_config only for use in src_install functions!" fi case $# in 0) die "Tell me what to save" ;; 1) if [[ -f "$1" ]]; then dodir /etc/portage/savedconfig/${CATEGORY} cp "$1" "${D}"/etc/portage/savedconfig/${CATEGORY}/${PF} \ || die "Failed to save $1" else dodir /etc/portage/savedconfig/${CATEGORY}/${PF} treecopy "$1" "${D}"/etc/portage/savedconfig/${CATEGORY}/${PF} \ || die "Failed to save $1" fi ;; *) dodir "${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}/${PF} treecopy $* "${D}/${PORTAGE_CONFIGROOT}"/etc/portage/savedconfig/${CATEGORY}/${PF} \ || die "Failed to save $1" 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 ${EBUILD_PHASE} in unpack|compile) ;; *) die "Bad package! restore_config only for use in src_unpack or src_compile functions!" ;; esac local found; local base=${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 "${found}" treecopy . "${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" eerror "provide a configuration file in ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CATEGORY}/${PN}" die "config file needed when USE=savedconfig is specified" fi }