From 4c945297c19ababe285cae6bf68540fa91508e2b Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Mon, 21 Jul 2014 01:27:23 -0400
Subject: installers/pc: Prompt for platform

---
(limited to 'installers')

diff --git a/installers/pc.sh b/installers/pc.sh
index aa61b35..586654a 100644
--- a/installers/pc.sh
+++ b/installers/pc.sh
@@ -6,18 +6,21 @@ set -u
 # run programs built for the arches before it.
 ARCHES='i686 amd64'
 
+PLATS='
+Acer Aspire One AO751h	i686	ao751h
+Dell Dimension 2400	amd64	dimension2400
+'
+
 main()
 {
 	local opt=
-	local host_arch=
-	local host_plat=
 	local mirror=
 	local install_arch=
+	local host_arch=
+	local host_plat=
 
-	while getopts 'a:P:m:' opt; do
+	while getopts 'm:' opt; do
 		case ${opt} in
-			a) host_arch="${OPTARG}";;
-			P) host_plat="${OPTARG}";;
 			m) mirror="${OPTARG}";;
 			?)
 				print_usage >&2
@@ -33,17 +36,12 @@ main()
 	root="${1}"
 
 	install_arch="$(detect_arch)"
-	if [ "x${host_arch}" = 'x' ]; then
-		host_arch="${install_arch}"
-	else
-		validate_arch "${host_arch}"
-	fi
+	read host_arch host_plat <<-EOF
+		$(prompt_plat)
+		EOF
+	host_arch="${host_arch}-${install_arch#*-}"
 	check_arch_compat "${install_arch}" "${host_arch}"
 
-	if [ "x${host_plat}" = 'x' ]; then
-		host_plat='dev'
-	fi
-
 	"${0%installers/inst-pc.sh}./miniprokit.sh" install \
 		-a "${host_arch}" -P "${host_plat}" \
 		${mirror:+-m} ${mirror} "${root}"
@@ -53,7 +51,7 @@ main()
 
 print_usage()
 {
-	printf 'Usage: %s [-a <arch>] [-P <plat>] [-m <mirror>] <root>\n' "${0}"
+	printf 'Usage: %s [-m <mirror>] <root>\n' "${0}"
 }
 
 error()
@@ -67,6 +65,44 @@ error()
 	exit ${status}
 }
 
+_select()
+{
+	# Field width of the prompt numbers.
+	select_width=$(expr ${#} : '.*')
+
+	select_i=
+
+	while :; do
+		case "${select_i}" in
+			'')
+				select_i=0
+				for select_word in "${@}"; do
+					select_i=$(expr ${select_i} + 1)
+					printf "%${select_width}d) %s\\n" \
+						${select_i} "${select_word}" \
+						>&2
+				done
+				;;
+			*[!0-9]*)
+				printf 'Please enter a number in range.\n' >&2
+				;;
+			*)
+				if [ ${select_i} -gt 0 ] && \
+						[ ${select_i} -le ${#} ]; then
+					shift $(expr $select_i - 1)
+					select_result="${1}"
+					break
+				fi
+				printf 'Please enter a number in range.\n' >&2
+				;;
+		esac
+
+		# Prompt and read input.
+		printf '%s' "${PS3-#? }" >&2
+		read -r select_i || exit
+	done
+}
+
 detect_arch()
 {
 	local uname_m=
@@ -85,15 +121,31 @@ detect_arch()
 	printf '%s\n' "${arch}"
 }
 
-validate_arch()
+prompt_plat()
 {
-	local arch="${1}"
-	local arches=
-
-	arches=" ${ARCHES} "
-	if [ "x${arches#* ${arch} }" = "x${arches}" ]; then
-		error 2 'Unknown architecture "%s"' "${arch}"
-	fi
+	local desc=
+	local arch=
+	local plat=
+
+	set --
+	while IFS='	' read -r desc arch plat; do
+		[ "x${desc}" = 'x' ] && continue
+		set -- "${@}" "${desc}"
+	done <<-EOF
+		${PLATS}
+		EOF
+
+	printf 'Select a platform:\n' >&2
+	_select "${@}"
+
+	while IFS='	' read -r desc arch plat; do
+		if [ "x${desc}" = "x${select_result}" ]; then
+			printf '%s %s\n' "${arch}" "${plat}"
+			break
+		fi
+	done <<-EOF
+		${PLATS}
+		EOF
 }
 
 check_arch_compat()
--
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