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# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: prefix.eclass,v 1.3 2009/11/16 21:39:00 grobian Exp $
# @ECLASS: prefix.eclass
# @MAINTAINER:
# Feel free to contact the Prefix team through <prefix@gentoo.org> if
# you have problems, suggestions or questions.
# @BLURB: Eclass to provide Prefix functionality
# @DESCRIPTION:
# Gentoo Prefix allows users to install into a self defined offset
# located somewhere in the filesystem. Prefix ebuilds require
# additional functions and variables which are defined by this eclass.
# @ECLASS-VARIABLE: EPREFIX
# @DESCRIPTION:
# The offset prefix of a Gentoo Prefix installation. When Gentoo Prefix
# is not used, ${EPREFIX} should be "". Prefix Portage sets EPREFIX,
# hence this eclass has nothing to do here in that case.
# Note that setting EPREFIX in the environment with Prefix Portage sets
# Portage into cross-prefix mode.
if [[ ! ${EPREFIX+set} ]]; then
export EPREFIX=''
fi
# @FUNCTION: eprefixify
# @USAGE: <list of to be eprefixified files>
# @DESCRIPTION:
# replaces @GENTOO_PORTAGE_EPREFIX@ with ${EPREFIX} for the given files,
# dies if no arguments are given, a file does not exist, or changing a
# file failed.
eprefixify() {
[[ $# -lt 1 ]] && die "at least one argument required"
einfo "Adjusting to prefix ${EPREFIX:-/}"
local x
for x in "$@" ; do
if [[ -e ${x} ]] ; then
ebegin " ${x##*/}"
sed -i -e "s|@GENTOO_PORTAGE_EPREFIX@|${EPREFIX}|g" "${x}"
eend $? || die "failed to eprefixify ${x}"
else
die "${x} does not exist"
fi
done
return 0
}
# vim: tw=72:
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