build-sys: import Makefile from darvaza.org

Signed-off-by: Alejandro Mery <amery@jpi.io>
2023-08-21 18:00:27 +00:00
parent f714210b37
commit a3f8e2fee3
8 changed files with 413 additions and 11 deletions
@@ -0,0 +1,196 @@
+#!/bin/sh
+
+set -eu
+
+INDEX="$1"
+
+PROJECTS="$(cut -d':' -f1 "$INDEX")"
+COMMANDS="tidy get build test up"
+
+expand() {
+	local prefix="$1" suffix="$2"
+	local x= out=
+	shift 2
+
+	for x; do
+		out="${out:+$out }${prefix}$x${suffix}"
+	done
+
+	echo "$out"
+}
+
+prefixed() {
+	local prefix="${1:+$1-}"
+	shift
+	expand "$prefix" "" "$@"
+}
+
+suffixed() {
+	local suffix="${1:+-$1}"
+	shift
+	expand "" "$suffix" "$@"
+}
+
+# packed remove excess whitespace from lines of commands
+packed() {
+	sed -e 's/^[ \t]\+//' -e 's/[ \t]\+$//' -e '/^$/d;' -e '/^#/d';
+}
+
+# packet_oneline converts a multiline script into packed single-line equivalent
+packed_oneline() {
+	packed | tr '\n' ';' | sed -e 's|;$||' -e 's|then;|then |g' -e 's|;[ \t]*|; |g'
+}
+
+gen_install_tools() {
+	cat <<EOT
+for url in \$(GO_INSTALL_URLS); do \$(GO) install -v \$\$url; done
+EOT
+}
+
+gen_revive_exclude() {
+	local self="$1"
+	local dirs= d=
+
+	dirs="$(cut -d: -f2 "$INDEX" | grep -v '^.$' || true)"
+	if [ "." != "$self" ]; then
+		dirs=$(echo "$dirs" | sed -n -e "s;^$self/\(.*\)$;\1;p")
+	fi
+
+	for d in $dirs; do
+		printf -- "-exclude ./$d/... "
+	done
+}
+
+for cmd in $COMMANDS; do
+	all="$(prefixed $cmd $PROJECTS)"
+	depsx=
+
+	cat <<EOT
+.PHONY: $cmd $all
+$cmd: $all
+
+EOT
+
+	# default calls
+	case "$cmd" in
+	tidy)
+		call="$(cat <<-EOT | packed
+		\$(GO) mod tidy
+
+		# go vet and revive only if there are .go files
+		#
+		$(cat <<-EOL | packed_oneline
+			set -e
+			FILES="\$\$(\$(GO) list -f '{{len .GoFiles}}' ./...)"
+			if [ -n "\$\$FILES" ]; then
+				\$(GO) vet ./...
+				\$(REVIVE) \$(REVIVE_RUN_ARGS) ./...
+			fi
+			EOL
+			)
+		EOT
+		)"
+		depsx="fmt \$(REVIVE)"
+		;;
+	up)
+		call="\$(GO) get -u -v ./...
+\$(GO) mod tidy"
+		;;
+	test)
+		call="\$(GO) $cmd ./..."
+		;;
+	*)
+		call="\$(GO) $cmd -v ./..."
+		;;
+	esac
+
+	case "$cmd" in
+	build|test)
+		sequential=true ;;
+	*)
+		sequential=false ;;
+	esac
+
+	while IFS=: read name dir mod deps; do
+
+		deps=$(echo "$deps" | tr ',' ' ')
+
+		# cd $dir
+		if [ "." = "$dir" ]; then
+			# root
+			cd=
+		else
+			cd="cd '$dir'; "
+		fi
+
+		callx="$call"
+		if [ "$name" = root ]; then
+			# special case
+			case "$cmd" in
+			get)
+				cmdx="get -tags tools"
+				;;
+			up)
+				cmdx="get -tags tools -u"
+				;;
+			*)
+				cmdx=
+				;;
+			esac
+
+			[ -z "$cmdx" ] || cmdx="\$(GO) $cmdx -v ./..."
+
+			if [ "up" = "$cmd" ]; then
+				callx="$cmdx
+\$(GO) mod tidy
+$(gen_install_tools)"
+			elif [ "get" = "$cmd" ]; then
+				callx="$cmdx
+$(gen_install_tools)"
+			elif [ -n "$cmdx" ]; then
+				classx="$cmdx"
+			fi
+
+		fi
+
+		if [ "build" = "$cmd" ]; then
+			# special build flags for cmd/*
+			#
+			callx="$(cat <<-EOL | packed_oneline
+			set -e
+			MOD="\$\$(\$(GO) list -f '{{.ImportPath}}' ./...)"
+			if echo "\$\$MOD" | grep -q -e '.*/cmd/[^/]\+\$\$'; then
+				\$(GO_BUILD_CMD) ./...
+			elif [ -n "\$\$MOD" ]; then
+				\$(GO_BUILD) ./...
+			fi
+			EOL
+			)"
+		fi
+
+		if [ "tidy" = "$cmd" ]; then
+			# exclude submodules when running revive
+			#
+			exclude=$(gen_revive_exclude "$dir")
+			if [ -n "$exclude" ]; then
+				callx=$(echo "$callx" | sed -e "s;\(REVIVE)\);\1 $exclude;")
+			fi
+		fi
+
+		if ! $sequential; then
+			deps=
+		fi
+
+		cat <<EOT
+$cmd-$name:${deps:+ $(prefixed $cmd $deps)}${depsx:+ | $depsx} ; \$(info \$(M) $cmd: $name)
+$(echo "$callx" | sed -e "/^$/d;" -e "s|^|\t\$(Q) $cd|")
+
+EOT
+	done < "$INDEX"
+done
+
+for x in $PROJECTS; do
+	cat <<EOT
+$x: $(suffixed $x get build tidy)
+EOT
+done