# --- SDE-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
#
# Filename: lib/sde-wrapper-discriminator.in
# Copyright (C) 2008 - 2009 The OpenSDE Project
#
# More information can be found in the files COPYING and README.
#
# 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; version 2 of the License. A copy of the
# GNU General Public License can be found in the file COPYING.
# --- SDE-COPYRIGHT-NOTE-END ---

# include the generic sde_wrapper functions
. "$SDEROOT/lib/sde-wrapper.in"

# list all the valid discriminators for a given command
#
sde_wrapper_discriminator_list() {
	ls -1d "$SDEROOT/bin/sde-$1-"* 2> /dev/null
}

# return the usage of every discriminator
sde_wrapper_discriminator_help() {
	local toy= name= desc= aliases=
	cat <<-EOT
	Usage:	sde $1 <discriminator> [OPTIONS] [ARGUMENTS]

	Available Discriminators:
	EOT
	for toy in $( sde_wrapper_discriminator_list "$1" ); do
		name=$( sde_wrapper_name "$toy" )
		desc=$( sde_wrapper_desc "$toy" )
		aliases=$( sde_wrapper_aliases "$toy" | tr ' ' ',')

		printf "%15s %s%s\n" "$name" "${desc:-...}" "${aliases:+ (Alias: $aliases)}"
	done
	cat <<-EOT

	For more information try: sde $1 <discriminator> --help
	EOT
}

sde_wrapper_discriminator() {
	local combin= command="$1"; shift
	local discriminators="$(sde_wrapper_discriminator_list $command)"

	if [ "$1" != "${1%-*}" ]; then
		# trying to cheat, no dashes alowed
		return
	elif [ -x "$SDEROOT/bin/sde-$command-$1" ]; then
		# discriminator given explicitly
		echo "$1"
	elif [ -n "$discriminators" ]; then
		# given token may be an alias of a valid discriminator for this command
		combin=$(grep -l "^#Alias:[\t ]\+\(.*[\t ]\)\?$1\([\t ].*\)\?\$" $discriminators | head -n 1)
		echo $( sde_wrapper_name "$combin" )
	fi
}