Split check_software() to libmakepkg

This opens the door for third parties who provide extensions to
libmakepkg to supply scripts that confirm the presence of their
dependant executables.

Signed-off-by: Que Quotion <quequotion@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 109 insertions, 0 deletions

diff --git a/scripts/libmakepkg/executable/vcs.sh.in b/scripts/libmakepkg/executable/vcs.sh.in
new file mode 100644
index 00000000..527d6f22
--- /dev/null
+++ b/scripts/libmakepkg/executable/vcs.sh.in
@@ -0,0 +1,109 @@
+#!/usr/bin/bash
+#
+#   vcs.sh - Confirm presence of binaries for VCS operations
+#
+#   Copyright (c) 2014-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_VCS_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_VCS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_vcs')
+
+get_vcsclient() {
+	local proto=${1%%+*}
+
+	local i
+	for i in "${VCSCLIENTS[@]}"; do
+		local handler="${i%%::*}"
+		if [[ $proto = "$handler" ]]; then
+			local client="${i##*::}"
+			break
+		fi
+	done
+
+	# if we didn't find an client, return an error
+	if [[ -z $client ]]; then
+		error "$(gettext "Unknown download protocol: %s")" "$proto"
+		plain "$(gettext "Aborting...")"
+		exit $E_CONFIG_ERROR
+	fi
+
+	printf "%s\n" "$client"
+}
+
+check_vcs_software() {
+	local netfile all_sources all_deps deps ret=0
+
+	if (( SOURCEONLY == 1 )); then
+		# we will not download VCS sources
+		return $ret
+	fi
+
+	if [[ -z $PACMAN_PATH ]]; then
+		warning "$(gettext "Cannot find the %s binary needed to check VCS source requirements.")" "$PACMAN"
+		return $ret
+	fi
+
+	# we currently only use global depends/makedepends arrays for --syncdeps
+	for attr in depends makedepends; do
+		get_pkgbuild_attribute "$pkg" "$attr" 1 'deps'
+		all_deps+=("${deps[@]}")
+
+		get_pkgbuild_attribute "$pkg" "${attr}_$CARCH" 1 'deps'
+		all_deps+=("${deps[@]}")
+	done
+
+	get_all_sources_for_arch 'all_sources'
+	for netfile in ${all_sources[@]}; do
+		local proto=$(get_protocol "$netfile")
+
+		case $proto in
+			bzr*|git*|hg*|svn*)
+				if ! type -p ${proto%%+*} > /dev/null; then
+					local client
+					client=$(get_vcsclient "$proto") || exit $?
+					# ensure specified program is installed
+					local uninstalled
+					uninstalled=$(check_deps "$client") || exit $E_INSTALL_DEPS_FAILED
+					# if not installed, check presence in depends or makedepends
+					if [[ -n "$uninstalled" ]] && (( ! NODEPS || ( VERIFYSOURCE && !DEP_BIN ) )); then
+						if ! in_array "$client" ${all_deps[@]}; then
+							error "$(gettext "Cannot find the %s package needed to handle %s sources.")" \
+									"$client" "${proto%%+*}"
+							ret=1
+						fi
+					fi
+				fi
+				;;
+			*)
+				# non VCS source
+				;;
+		esac
+	done
+
+	return $ret
+}
+
+executable_vcs() {
+	if ! check_vcs_software; then
+		ret=1
+	fi
+}