reinit the tree, so we can have metadata

1 files changed, 115 insertions, 0 deletions

diff --git a/eclass/db-use.eclass b/eclass/db-use.eclass
new file mode 100644
index 000000000000..35f11df034a2
--- /dev/null
+++ b/eclass/db-use.eclass
@@ -0,0 +1,115 @@
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# This is a common location for functions that aid the use of sys-libs/db
+#
+# Bugs: maintainer-needed@gentoo.org
+
+inherit versionator multilib
+
+#Convert a version to a db slot
+db_ver_to_slot() {
+	if [ $# -ne 1 ]; then
+		eerror "Function db_ver_to_slot needs one argument" >&2
+		eerror "args given:" >&2
+		for f in $@
+		do
+			eerror " - \"$@\"" >&2
+		done
+		return 1
+	fi
+	# 5.0.x uses 5.0 as slot value, so this replacement will break it;
+	# older sys-libs/db might have been using this but it's no longer
+	# the case, so make it work for latest rather than older stuff.
+	# echo -n "${1/.0/}"
+	echo -n "$1"
+}
+
+#Find the version that correspond to the given atom
+db_findver() {
+	has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
+	if [ $# -ne 1 ]; then
+		eerror "Function db_findver needs one argument" >&2
+		eerror "args given:" >&2
+		for f in $@
+		do
+			eerror " - \"$@\"" >&2
+		done
+		return 1
+	fi
+
+	PKG="$(best_version $1)"
+	VER="$(get_version_component_range 1-2 "${PKG/*db-/}")"
+	if [ -d "${EPREFIX}"/usr/include/db$(db_ver_to_slot "$VER") ]; then
+		#einfo "Found db version ${VER}" >&2
+		echo -n "$VER"
+		return 0
+	else
+		return 1
+	fi
+}
+
+# Get the include dir for berkeley db.
+# This function has two modes. Without any arguments it will give the best
+# version available. With arguments that form the versions of db packages
+# to test for, it will aim to find the library corresponding to it.
+
+db_includedir() {
+	has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
+	if [ $# -eq 0 ]; then
+		VER="$(db_findver sys-libs/db)" || return 1
+		VER="$(db_ver_to_slot "$VER")"
+		echo "include version ${VER}" >&2
+		if [ -d "${EPREFIX}/usr/include/db${VER}" ]; then
+			echo -n "${EPREFIX}/usr/include/db${VER}"
+			return 0
+		else
+			eerror "sys-libs/db package requested, but headers not found" >&2
+			return 1
+		fi
+	else
+		#arguments given
+		for x in $@
+		do
+			if VER=$(db_findver "=sys-libs/db-${x}*") &&
+			   [ -d "${EPREFIX}/usr/include/db$(db_ver_to_slot $VER)" ]; then
+				echo -n "${EPREFIX}/usr/include/db$(db_ver_to_slot $VER)"
+				return 0
+			fi
+		done
+		eerror "No suitable db version found"
+		return 1
+	fi
+}
+
+
+# Get the library name for berkeley db. Something like "db-4.2" will be the
+# outcome. This function has two modes. Without any arguments it will give
+# the best version available. With arguments that form the versions of db
+# packages to test for, it will aim to find the library corresponding to it.
+
+db_libname() {
+	has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
+	if [ $# -eq 0 ]; then
+		VER="$(db_findver sys-libs/db)" || return 1
+		if [ -e "${EPREFIX}/usr/$(get_libdir)/libdb-${VER}$(get_libname)" ]; then
+			echo -n "db-${VER}"
+			return 0
+		else
+			eerror "sys-libs/db package requested, but library not found" >&2
+			return 1
+		fi
+	else
+		#arguments given
+		for x in $@
+		do
+			if VER=$(db_findver "=sys-libs/db-${x}*"); then
+				if [ -e "${EPREFIX}/usr/$(get_libdir)/libdb-${VER}$(get_libname)" ]; then
+					echo -n "db-${VER}"
+					return 0
+				fi
+			fi
+		done
+		eerror "No suitable db version found" >&2
+		return 1
+	fi
+}