reinit the tree, so we can have metadata

1 files changed, 139 insertions, 0 deletions

diff --git a/eclass/prefix.eclass b/eclass/prefix.eclass
new file mode 100644
index 000000000000..eb5843182f31
--- /dev/null
+++ b/eclass/prefix.eclass
@@ -0,0 +1,139 @@
+# Copyright 1999-2009 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @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
+}
+
+# @FUNCTION: hprefixify
+# @USAGE: [ -w <line match> ] [ -e <extended regex> ] [ -q <quotation char> ]
+#	<list of files>
+# @DESCRIPTION:
+# Tries a set of heuristics to prefixify the given files. Dies if no
+# arguments are given, a file does not exist, or changing a file failed.
+#
+# Additional extended regular expression can be passed by -e or
+# environment variable PREFIX_EXTRA_REGEX.  The default heuristics can
+# be constrained to lines that match a sed expression passed by -w or
+# environment variable PREFIX_LINE_MATCH.  Quotation characters can be
+# specified by -q or environment variable PREFIX_QUOTE_CHAR, unless
+# EPREFIX is empty.
+#
+# @EXAMPLE:
+# Only prefixify the 30th line,
+#   hprefixify -w 30 configure
+# Only prefixify lines that contain "PATH",
+#   hprefixify -w "/PATH/" configure
+# Also delete all the /opt/gnu search paths,
+#   hprefixify -e "/\/opt\/gnu/d" configure
+# Quote the inserted EPREFIX
+#   hprefixify -q '"' etc/profile
+hprefixify() {
+	use prefix || return 0
+
+	local xl=() x
+	while [[ $# -gt 0 ]]; do
+		case $1 in
+			-e) local PREFIX_EXTRA_REGEX="$2"
+				shift
+				;;
+			-w) local PREFIX_LINE_MATCH="$2"
+				shift
+				;;
+			-q) local PREFIX_QUOTE_CHAR="${EPREFIX:+$2}"
+				shift
+				;;
+			*)
+				xl+=( "$1" )
+				;;
+		esac
+		shift
+	done
+	local dirs="/(usr|lib(|[onx]?32|n?64)|etc|bin|sbin|var|opt|run)" \
+		  eprefix="${PREFIX_QUOTE_CHAR}${EPREFIX}${PREFIX_QUOTE_CHAR}"
+
+	[[ ${#xl[@]} -lt 1 ]] && die "at least one file operand is required"
+	einfo "Adjusting to prefix ${EPREFIX:-/}"
+	for x in "${xl[@]}" ; do
+		if [[ -e ${x} ]] ; then
+			ebegin "  ${x##*/}"
+			sed -r \
+				-e "${PREFIX_LINE_MATCH}s,([^[:alnum:]}\)\.])${dirs},\1${eprefix}/\2,g" \
+				-e "${PREFIX_LINE_MATCH}s,^${dirs},${eprefix}/\1," \
+				-e "${PREFIX_EXTRA_REGEX}" \
+				-i "${x}"
+			eend $? || die "failed to prefixify ${x}"
+		else
+			die "${x} does not exist"
+		fi
+	done
+}
+
+# @FUNCTION: prefixify_ro
+# @USAGE: prefixify_ro <file>.
+# @DESCRIPTION:
+# prefixify a read-only file.
+# copies the files to ${T}, prefixies it, echos the new file.
+# @EXAMPLE:
+# doexe "$(prefixify_ro "${FILESDIR}"/fix_libtool_files.sh)"
+# epatch "$(prefixify_ro "${FILESDIR}"/${PN}-4.0.2-path.patch)"
+prefixify_ro() {
+	if [[ -e $1 ]] ; then
+		local f=${1##*/}
+		cp "$1" "${T}" || die "failed to copy file"
+		local x="${T}"/${f}
+		# redirect to stderr because stdout is used to
+		# return the prefixified file.
+		if grep -qs @GENTOO_PORTAGE_EPREFIX@ "${x}" ; then
+			eprefixify "${T}"/${f} 1>&2
+		else
+			hprefixify "${T}"/${f} 1>&2
+		fi
+		echo "${x}"
+	else
+		die "$1 does not exist"
+	fi
+}
+# vim: tw=72: