1 files changed, 60 insertions, 0 deletions
diff --git a/eclass/patches.eclass b/eclass/patches.eclass
new file mode 100644
index 0000000..d8173cd
--- /dev/null
+++ b/eclass/patches.eclass
@@ -0,0 +1,60 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: patches.eclass
+# @MAINTAINER:
+# mva
+# @AUTHOR:
+# mva
+# @BLURB:
+# @DESCRIPTION:
+# Eclass that checks for patches directories existance and auto-add them into PATCHES=()
+
+EXPORT_FUNCTIONS src_prepare
+
+PATCHDIR="${FILESDIR}/patches/${PV}"
+[[ -z ${PATCHES[@]} ]] && PATCHES=()
+
+patches_src_prepare() {
+	if [[ -d "${PATCHDIR}" ]]; then
+		_patchdir_not_empty() {
+			local has_files
+			local LC_ALL=POSIX
+			local prev_shopt=$(shopt -p nullglob)
+			shopt -s nullglob
+			local f
+			for f in "${1:-${PATCHDIR}}"/*; do
+				if [[ "${f}" == *.diff || "${f}" == *.patch ]] && [[ -f "${f}" || -L "${f}" ]]; then
+					has_files=1
+				elif [[ -d "${f}" ]]; then
+					# recursion
+					_patchdir_not_empty "${f}" && has_files=1
+				fi
+			done
+			${prev_shopt}
+			[[ -n "${has_files}" ]]; return $?
+		}
+
+		_patchdir_not_empty && PATCHES+=("${PATCHDIR}")
+
+		if [[ -d "${PATCHDIR}/conditional" ]]; then
+			pushd "${PATCHDIR}/conditional" &>/dev/null
+			for d in *; do
+				if [[ -d ${d} ]]; then
+					if [[ "${d##no-}" == ${d} ]]; then
+						(use "${d}" && _patchdir_not_empty "${d}") && PATCHES+=("${PATCHDIR}/conditional/${d}")
+					else
+						(use "${d##no-}" && _patchdir_not_empty "${d}") || PATCHES+=("${PATCHDIR}/conditional/${d}")
+					fi
+				fi
+			done
+			popd &>/dev/null
+		fi
+	fi
+	if declare -f cmake-utils_src_prepare &>/dev/null; then
+		# cmake-utils_src_prepare support (to decrease kludges in the ebuilds)
+		cmake-utils_src_prepare
+	else
+		default_src_prepare
+	fi
+}