From aa18062e8b348af1797efb514dd70ac7c420a319 Mon Sep 17 00:00:00 2001
From: KronoZed <root@kronoz.guru>
Date: Mon, 31 Oct 2016 16:48:11 +0300
Subject: [PATCH] Create golang-single.eclass

---
 eclass/golang-single.eclass | 185 ++++++++++++++++++++++++++++++++++++
 1 file changed, 185 insertions(+)
 create mode 100644 eclass/golang-single.eclass

diff --git a/eclass/golang-single.eclass b/eclass/golang-single.eclass
new file mode 100644
index 0000000..6e3657c
--- /dev/null
+++ b/eclass/golang-single.eclass
@@ -0,0 +1,185 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# @ECLASS: golang-single.eclass
+# @MAINTAINER:
+# Mauro Toffanin <toffanin.mauro@gmail.com>
+# @AUTHOR:
+# Mauro Toffanin <toffanin.mauro@gmail.com>
+# @BLURB: An eclass for GoLang packages not installed inside GOPATH/GOBIN.
+# @DESCRIPTION:
+# This eclass allows to install arbitrary packages written in GoLang which
+# don't support being installed inside the Go environment.
+# This mostly includes traditional packages (C/C++/GUI) embedding tools written
+# in GoLang, and GoLang packages that need to be compiled with GCC instead of
+# the standard Go interpreter.
+#
+# @EXAMPLE:
+# Typical ebuild using golang-single.eclass:
+#
+# @CODE
+# EAPI=5
+#
+# GOLANG_PKG_IMPORTPATH="github.com/captObvious"
+# GOLANG_PKG_ARCHIVESUFFIX=".zip"
+# GOLANG_PKG_HAVE_TEST
+# inherit golang-single qt4-r2
+#
+# DESCRIPTION="Foo bar application"
+# HOMEPAGE="http://example.org/foo/"
+#
+# LICENSE="MIT"
+# KEYWORDS="~amd64 ~x86"
+# SLOT="0"
+# IUSE="debug doc qt4"
+#
+# CDEPEND="
+#   qt4? (
+#       dev-qt/qtcore:4
+#       dev-qt/qtgui:4
+#   )"
+# RDEPEND="${CDEPEND}
+#   !media-gfx/bar"
+# DEPEND="${CDEPEND}
+#   doc? ( app-doc/doxygen )"
+#
+# DOCS=(AUTHORS ChangeLog README "Read me.txt" TODO)
+#
+# PATCHES=(
+#   "${FILESDIR}/${P}-qt4.patch" # bug 123458
+#   "${FILESDIR}/${P}-as-needed.patch"
+# )
+#
+# src_install() {
+#   use doc && HTML_DOCS=("${BUILD_DIR}/apidocs/html/")
+#   autotools-utils_src_install
+#   if use examples; then
+#       dobin "${BUILD_DIR}"/foo_example{1,2,3} \\
+#           || die 'dobin examples failed'
+#   fi
+# }
+#
+# @CODE
+
+
+inherit golang-base
+
+EXPORT_FUNCTIONS src_prepare src_unpack src_configure src_compile src_install src_test
+
+if [[ -z ${_GOLANG_SINGLE_ECLASS} ]]; then
+_GOLANG_SINGLE_ECLASS=1
+
+
+# This eclass uses GOLANG_PKG_IMPORTPATH to populate SRC_URI.
+SRC_URI="${SRC_URI:="https://${GOLANG_PKG_IMPORTPATH}/${GOLANG_PKG_NAME}/archive/${GOLANG_PKG_ARCHIVEPREFIX}${GOLANG_PKG_VERSION}${GOLANG_PKG_ARCHIVESUFFIX} -> ${P}${GOLANG_PKG_ARCHIVESUFFIX}"}"
+
+# This eclass uses GOLANG_PKG_DEPENDENCIES associative array to populate SRC_URI
+# with the required snapshots of the supplied GoLang dependencies.
+if [[ ${#GOLANG_PKG_DEPENDENCIES[@]} -gt 0 ]]; then
+
+	for i in ${!GOLANG_PKG_DEPENDENCIES[@]} ; do
+
+		# Collects all the tokens of the dependency.
+		local -A DEPENDENCY=()
+		while read -d $'\n' key value; do
+			[[ -z ${key} ]] && continue
+			DEPENDENCY[$key]="${value}"
+		done <<-EOF
+			$( _factorize_dependency_entities "${GOLANG_PKG_DEPENDENCIES[$i]}" )
+		EOF
+
+		# Debug
+		debug-print "${FUNCNAME}: DEPENDENCY = ${GOLANG_PKG_DEPENDENCIES[$i]}"
+		debug-print "${FUNCNAME}: importpath = ${DEPENDENCY[importpath]}"
+		debug-print "${FUNCNAME}: revision   = ${DEPENDENCY[revision]}"
+
+		# Downloads the archive.
+		case ${DEPENDENCY[importpath]} in
+			github*)
+				SRC_URI+=" https://${DEPENDENCY[importpath]}/archive/${DEPENDENCY[revision]}${GOLANG_PKG_ARCHIVESUFFIX} -> ${DEPENDENCY[importpath]//\//-}-${DEPENDENCY[revision]}${GOLANG_PKG_ARCHIVESUFFIX}"
+				;;
+			bitbucket*)
+				SRC_URI+=" https://${DEPENDENCY[importpath]}/get/${DEPENDENCY[revision]}.zip -> ${DEPENDENCY[importpath]//\//-}-${DEPENDENCY[revision]}.zip"
+				;;
+			code.google*)
+				SRC_URI+=" https://${DEPENDENCY[project_name]}.googlecode.com/archive/${DEPENDENCY[revision]}.tar.gz -> ${DEPENDENCY[importpath]//\//-}-${DEPENDENCY[revision]}.tar.gz"
+				;;
+			*) die "This eclass doesn't support '${DEPENDENCY[importpath]}'" ;;
+		esac
+
+	done
+fi
+
+
+# @FUNCTION: golang-single_src_unpack
+# @DESCRIPTION:
+# Unpack the source archive.
+golang-single_src_unpack() {
+	debug-print-function ${FUNCNAME} "${@}"
+
+	default
+
+	# Creates S.
+	mkdir -p "${S%/*}" || die
+
+	# Moves main GoLang package from WORKDIR into GOPATH.
+	if [[ "${GOLANG_PKG_IMPORTPATH}" != "${GOLANG_PKG_IMPORTPATH_ALIAS}" ]]; then
+		local alias_abspath="${WORKDIR}/gopath/src/${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}"
+		mkdir -p "${alias_abspath%/*}" || die
+		mv "${GOLANG_PKG_NAME}-${GOLANG_PKG_VERSION}" "${alias_abspath}"/ || die
+	else
+		mv "${GOLANG_PKG_NAME}-${GOLANG_PKG_VERSION}" "${S}"/ || die
+	fi
+}
+
+
+# @FUNCTION: golang-single_src_prepare
+# @DESCRIPTION:
+# Prepare source code.
+golang-single_src_prepare() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	# Sets up GoLang build environment.
+	golang_setup
+
+	golang-base_src_prepare
+}
+
+# @FUNCTION: golang-single_src_configure
+# @DESCRIPTION:
+# Configure the package.
+golang-single_src_configure() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	golang-base_src_configure
+}
+
+# @FUNCTION: golang-single_src_compile
+# @DESCRIPTION:
+# Compiles the package.
+golang-single_src_compile() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	golang-base_src_compile
+}
+
+# @FUNCTION: golang-single_src_install
+# @DESCRIPTION:
+# Installs binaries and documents from DOCS or HTML_DOCS arrays.
+golang-single_src_install() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	golang-base_src_install
+}
+
+# @FUNCTION: golang-single_src_test
+# @DESCRIPTION:
+# Runs the unit tests for the main package.
+golang-single_src_test() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	golang-base_src_test
+}
+
+fi