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# Startup wiring: the CLI usage/help text plus the shared config-array parser.
# Logging utilities now live in logging.source.sh and path resolution in
# paths.source.sh (split out by task jn0). resolve_config_array stays here
# because it is the shared "array or scalar config" parser used by the config
# modules. All library modules are sourced before any code runs, so definition
# order does not affect availability.
usage() {
cat - <<USAGE >&2
Usage:
$0 --generate [--config PATH] [OPTIONS]
$0 --refresh-splash [--config PATH] [OPTIONS]
$0 --sync [--config PATH] [OPTIONS]
$0 --dry-run [--config PATH] [OPTIONS]
$0 --print-config [--config PATH] [OPTIONS]
$0 --clean [--config PATH] [OPTIONS]
(removes DIST_DIR and any leftover .shuriken.*.staging/backup dirs)
$0 --version
$0 --init
Options:
--config PATH
--incoming PATH
--dist PATH
--template PATH
--favicon PATH
--title TEXT
--height VALUE
--thumbheight VALUE
--maxpreviews N
--subdivide PERCENT
--image-jobs N
--random-seed VALUE
--splash
--no-splash
--stats
--no-stats
--shuffle
--no-shuffle
--tarball
--no-tarball
--force
--sync-destination DEST
--sync-delete
--no-sync-delete
--verbose
--quiet
USAGE
}
# Read a configuration value into the named array, accepting both Bash array
# and whitespace-separated scalar declarations of the same variable.
# This is shared by resolve_tar_opts and resolve_sync_destinations so the
# "array or scalar config" parsing lives in exactly one place.
#
# Arguments:
# $1 name of the source config variable (e.g. TAR_OPTS)
# $2 name of the destination array variable (nameref)
# Returns:
# 0 if the variable was declared (the destination may still be empty),
# 1 if the variable was not declared at all (lets callers apply defaults).
resolve_config_array() {
local -r config_var="$1"; shift
local -n config_array_ref="$1"; shift
local config_decl
config_array_ref=()
# declare -p fails when the variable was never set; callers use the
# non-zero return to distinguish "unset" from "set but empty".
if ! config_decl=$(declare -p "$config_var" 2>/dev/null); then
return 1
fi
case "$config_decl" in
declare\ -a*\ "$config_var"=*)
# Already a real array: copy it element by element.
local -n config_source_ref="$config_var"
# shellcheck disable=SC2034
config_array_ref=("${config_source_ref[@]}")
;;
*)
# Scalar string: word-split it into the destination array.
local -n config_scalar_ref="$config_var"
if [ -n "${config_scalar_ref:-}" ]; then
# shellcheck disable=SC2034
read -r -a config_array_ref <<< "$config_scalar_ref"
fi
;;
esac
}
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