Add fossil scm support to makepkg

Signed-off-by: Ivy Foster <escondida@iff.ink>
Signed-off-by: Allan McRae <allan@archlinux.org>

doc/PKGBUILD.5.asciidoc

@@ -499,6 +499,9 @@ The source URL is divided into four components:
 	*bzr*;;
 		revision (see `'bzr help revisionspec'` for details)
 
+	*fossil*;;
+		branch, commit, tag
+
 	*git*;;
 		branch, commit, tag
 

etc/makepkg.conf.in

@@ -24,6 +24,7 @@ DLAGENTS=('file::/usr/bin/curl -gqC - -o %o %u'
 #-- The package required by makepkg to download VCS sources
 #  Format: 'protocol::package'
 VCSCLIENTS=('bzr::bzr'
+            'fossil::fossil'
             'git::git'
             'hg::mercurial'
             'svn::subversion')

scripts/libmakepkg/executable/vcs.sh.in

@@ -77,7 +77,7 @@ executable_vcs() {
 		local proto=$(get_protocol "$netfile")
 
 		case $proto in
-			bzr*|git*|hg*|svn*)
+			bzr*|fossil*|git*|hg*|svn*)
 				if ! type -p ${proto%%+*} > /dev/null; then
 					local client
 					client=$(get_vcsclient "$proto") || exit $?

scripts/libmakepkg/source/fossil.sh.in

@@ -0,0 +1,126 @@
+#!/bin/bash
+#
+#   fossil.sh - function for handling the download and extraction of Fossil sources
+#
+#   Copyright (c) 2020 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 "$LIBMAKEPKG_SOURCE_FOSSIL_SH" ]] && return
+LIBMAKEPKG_SOURCE_FOSSIL_SH=1
+
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+download_fossil() {
+	# abort early if parent says not to fetch
+	if declare -p get_vcs > /dev/null 2>&1; then
+		(( get_vcs )) || return
+	fi
+
+	local netfile=$1
+
+	local db=$(get_filepath "$netfile")
+	[[ -z "$db" ]] && db="$SRCDEST/$(get_filename "$netfile")"
+
+	local repo=$db
+
+	local url=$(get_url "$netfile")
+	url=${url#fossil+}
+	url=${url%%#*}
+	url=${url%%\?*}
+
+	if [[ ! -f "$db" ]]; then
+		msg2 "$(gettext "Cloning %s %s repo...")" "${repo}" "fossil"
+		if ! fossil clone "$url" "$db"; then
+			error "$(gettext "Failure while downloading %s %s repo")" "${repo}" "fossil"
+			plainerr "$(gettext "Aborting...")"
+			exit 1
+		fi
+	elif (( ! HOLDVER )); then
+		# Make sure we are fetching the right repo
+		if ! [[ $(fossil remote -R "$db") = "$url" ]]; then
+			error "$(gettext "%s is not a clone of %s")" "$db" "$url"
+			plainerr "$(gettext "Aborting...")"
+			exit 1
+		fi
+		msg2 "$(gettext "Updating %s %s repo...")" "${repo}" "fossil"
+		if ! fossil pull -R "$db"; then
+			# only warn on failure to allow offline builds
+			warning "$(gettext "Failure while updating %s %s repo")" "${repo}" "fossil"
+		fi
+	fi
+}
+
+extract_fossil() {
+	local netfile=$1 tagname
+
+	local fragment=$(get_uri_fragment "$netfile")
+	local repo=$(get_filename "$netfile")
+
+	local db=$(get_filepath "$netfile")
+	[[ -z "$db" ]] && db="$SRCDEST/$(get_filename "$netfile")"
+	local dir=${db%%.fossil}
+	dir=${dir##*/}
+
+	msg2 "$(gettext "Creating working copy of %s %s repo...")" "${repo}" "fossil"
+	pushd "$srcdir" &>/dev/null
+
+	if [[ -d "$dir" ]]; then
+		if [[ -f "$dir/.fslckout" ]]; then
+			cd_safe "$dir"
+			if ! [[ $(fossil info | awk '/^repository/ {print $2}') = "$db" ]]; then
+				error "$(gettext "%s is not a checkout of %s repo %s")" "${srcdir}/${dir}" "fossil" "${repo}"
+				plainerr "$(gettext "Aborting...")"
+				exit 1
+			fi
+			cd_safe "$srcdir"
+		else
+			error "$(gettext "%s is not a checkout of %s repo %s")" "${srcdir}/${dir}" "fossil" "${repo}"
+			plainerr "$(gettext "Aborting...")"
+			exit 1
+		fi
+	elif ! fossil open "$db" --workdir "$dir" >/dev/null; then
+		error "$(gettext "Failure while creating working copy of %s %s repo")" "${repo}" "fossil"
+		plainerr "$(gettext "Aborting...")"
+		exit 1
+	fi
+
+	cd_safe "${dir##*/}"
+
+	ref=tip
+	if [[ -n $fragment ]]; then
+		case ${fragment%%=*} in
+			branch|commit|tag)
+				ref=${fragment##*=}
+				;;
+			*)
+				error "$(gettext "Unrecognized reference: %s")" "${fragment}"
+				plainerr "$(gettext "Aborting...")"
+				exit 1
+		esac
+	fi
+
+	if ! fossil update "$ref" >/dev/null; then
+		error "$(gettext "Failure while creating working copy of %s %s repo")" "${repo}" "fossil"
+		plainerr "$(gettext "Aborting...")"
+		exit 1
+	fi
+
+	popd &>/dev/null
+}

scripts/libmakepkg/source/meson.build

@@ -3,6 +3,7 @@ libmakepkg_module = 'source'
 sources = [
   'bzr.sh.in',
   'file.sh.in',
+  'fossil.sh.in',
   'git.sh.in',
   'hg.sh.in',
   'local.sh.in',

scripts/libmakepkg/util/source.sh.in

@@ -65,7 +65,7 @@ get_filename() {
 	local proto=$(get_protocol "$netfile")
 
 	case $proto in
-		bzr|git|hg|svn)
+		bzr|fossil|git|hg|svn)
 			filename=${netfile%%#*}
 			filename=${filename%%\?*}
 			filename=${filename%/}
@@ -73,6 +73,9 @@ get_filename() {
 			if [[ $proto = bzr ]]; then
 				filename=${filename#*lp:}
 			fi
+			if [[ $proto = fossil ]]; then
+				filename=$filename.fossil
+			fi
 			if [[ $proto = git ]]; then
 				filename=${filename%%.git*}
 			fi