# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

ECLASS=x11-prefix
INHERITED="${INHERITED} ${ECLASS}"

EXPORT_FUNCTIONS pkg_setup

# Set the X11_PREFIX variable
x11-prefix_pkg_setup() {
	if [ -d "/usr/X11R6" -a ! -L "/usr/X11R6" ] \
	|| [ -d "${ROOT}usr/X11R6" -a ! -L "${ROOT}usr/X11R6" ] ; then
		# safer to use /usr/X11R6 as soon as one of the existing X11
		# instances uses this prefix
		X11_PREFIX="/usr/X11R6"
	else
		X11_PREFIX="/usr"
	fi
	if [ -n "${NEED_NEW_X11_PREFIX}" ] \
	&& [ -n "${X11_PREFIX#/usr}" ] ; then
		eerror "This ebuild needs X11 to be installed in /usr"
		die "wrong X11 prefix"
	elif [ -n "${NEED_OLD_X11_PREFIX}" ] \
	  && [ -n "${X11_PREFIX#/usr/X11R6}" ] ; then
		eerror "This ebuild needs X11 to be installed in /usr/X11R6"
		die "wrong X11 prefix"
	fi
	return 0
}

# Boolean test to check we are on a system where X11 is in /usr
new_x11_prefix() {
	if [ -z "${X11_PREFIX}" ] ; then
		eerror "X11_PREFIX not defined: you must call x11-prefix_pkg_setup()."
	fi
	[ -z "${X11_PREFIX#/usr}" ]
}

# These are some sed hacks useful to applications built from an Imakefile.
# Typical usage:
#      xmkf || die
#      fix_Imake_Makefile
#      make || die
fix_Imake_Makefile() {
	local my_file=${1:-Makefile}
	[ ! -f "${my_file}" ] \
		&& eerror "${my_file}: file not found" \
		&& return 1
	# - change *MANSUFFIX from [1-9]x to [1-9] (we'll keep the X category for the
	#   actual X11 stuffs, not for any random app/lib vaguely linked to X)
	sed -i "/MANSUFFIX *= */s:\([1-8]\)x:\1:" ${my_file}
	# - set DOCDIR to /usr/share/doc/${PF} (it's /usr/share/doc/xorg-x11-VERSION
	#   otherwise)
	sed -i "/DOCDIR *= */s:\(/usr/share/doc\)/.*:\1/${PF}:" ${my_file}
	# - random shots: fix remaining /usr/X11R6 instances if any (BUILDROOT,
	# stuffs like that), etc.
	sed -i \
		-e "s:/usr/X11R6:${X11_PREFIX}:" \
		-e "s:/usr/man:/usr/share/man:" \
		-e "s:/usr/local:/usr:" \
		-e "s:/usr/bin/X11:/usr/bin:" \
		-e "s:/usr/X11/bin:/usr/bin:" \
		${my_file}
}

# XXX Add a pkg_postinst function to warn about the Ive-built-a-binary-on-a-
# XXX new-system-but-Im-installing-it-on-an-old-one case.