unified list command for all scripts

e.g. ./build boot roms list
./update blobs inject listboards
./build boot list
./build clean list

also this is now possible:
./build list
or maybe
./update list
^ would list directories in resources/scripts/build
and resources/scripts/update respectively

this script is added:
resources/scripts/build/command/options

call it like so, e.g.
./build command options resources/coreboot

this script is now used, for list functions in
other scripts.

Signed-off-by: Leah Rowe <leah@libreboot.org>

2 files changed, 38 insertions, 16 deletions

diff --git a/resources/scripts/build/boot/roms b/resources/scripts/build/boot/roms
index 0aedfdb1..a19d9445 100755
--- a/resources/scripts/build/boot/roms
+++ b/resources/scripts/build/boot/roms
@@ -42,7 +42,8 @@ main()
 
 	firstoption="${1}"
 	[ "${firstoption}" = "help" ] && usage && exit 0
-	[ "${firstoption}" = "list" ] && listboards && exit 0
+	[ "${firstoption}" = "list" ] && \
+	    ./build command options resources/coreboot && exit 0
 
 	while [ $# -gt 0 ]; do
 		case ${1} in
@@ -65,8 +66,8 @@ main()
 	printf "Building %s ROM images\n" "${projectname}"
 
 	if [ "${firstoption}" = "all" ]; then
-		for boardname in $(listboards); do
-			buildrom "${boardname}" || err "build/roms (1): error"
+		for target in $(./build command options resources/coreboot); do
+			buildrom "${target}" || err "build/roms (1): error"
 		done
 	else
 		for board in ${boards}; do
@@ -80,7 +81,7 @@ main()
 usage()
 {
 	cat <<- EOF
-	USAGE:	./build boot roms boardname
+	USAGE:	./build boot roms target
 	To build *all* boards, do this: ./build boot roms all
 	To list *all* boards, do this: ./build boot roms list
 	
@@ -94,23 +95,13 @@ usage()
 		./build boot roms x200_8mb x60
 		./build boot roms x60 -p grub -d corebootfb -k usqwerty
 
-	possible values for 'boardname':
-	$(listboards)
+	possible values for 'target':
+	$(./build command options "resources/coreboot")
 
 	Refer to the ${projectname} documentation for more information.
 	EOF
 }
 
-listboards()
-{
-	for boarddir in resources/coreboot/*; do
-		[ -d "${boarddir}" ] || continue
-		board="${boarddir##resources/coreboot/}"
-		board="${board%/}"
-		printf '%s\n' "${board##*/}"
-	done
-}
-
 # Build ROM images for supported boards
 buildrom() {
 	[ -d "resources/coreboot/${1}/" ] || \
diff --git a/resources/scripts/build/command/options b/resources/scripts/build/command/options
new file mode 100755
index 00000000..84a9a3fb
--- /dev/null
+++ b/resources/scripts/build/command/options
@@ -0,0 +1,31 @@
+#!/usr/bin/env sh
+
+# Copyright (c) 2023 Leah Rowe <info@minifree.org>
+# SPDX-License-Identifier: MIT
+
+. "include/err.sh"
+
+items=1
+
+main()
+{
+	[ $# -gt 0 ] || \
+		err "No argument given"
+	listitems "${1}" || err "No items present under: ${1}"
+}
+
+listitems()
+{
+	[ -d "${1}" ] || \
+		err "Directory not does exist: ${1}"
+	for x in "${1}/"*; do
+		# -e used because this is for files *or* directories
+		[ -e "${x}" ] || continue
+		[ "${x##*/}" = "build.list" ] && continue
+		printf "%s\n" "${x##*/}"
+		items=0
+	done
+	return ${items}
+}
+
+main $@